BOK FINANCIAL CORP ET AL, 10-Q filed on 8/2/2013
Quarterly Report
Document And Entity Information (USD $)
6 Months Ended
Jun. 30, 2013
Document and Entity Information [Abstract]
 
Entity Registrant Name
BOK FINANCIAL CORP ET AL 
Entity Central Index Key
0000875357 
Current Fiscal Year End Date
--12-31 
Entity Well-known Seasoned Issuer
Yes 
Entity Voluntary Filers
Yes 
Entity Current Reporting Status
Yes 
Entity Filer Category
Large Accelerated Filer 
Entity Public Float
$ 1,679,070,454 
Entity Common Stock, Shares Outstanding
68,739,208 
Document Fiscal Year Focus
2013 
Document Fiscal Period Focus
Q2 
Document Type
10-Q 
Amendment Flag
false 
Document Period End Date
Jun. 30, 2013 
Consolidated Statements of Earnings (Unaudited) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Interest revenue [Abstract]
 
 
 
 
Loans
$ 124,297 
$ 131,175 
$ 249,410 
$ 258,158 
Residential mortgage loans held for sale
2,294 
1,784 
4,086 
3,552 
Trading securities
621 
364 
1,099 
664 
Taxable securities
3,604 
4,282 
7,402 
8,716 
Tax-exempt securities
1,150 
921 
2,178 
1,898 
Total investment securities
4,754 
5,203 
9,580 
10,614 
Taxable securities
51,371 
61,583 
106,390 
121,239 
Tax-exempt securities
687 
631 
1,291 
1,232 
Total available for sale securities
52,058 
62,214 
107,681 
122,471 
Fair value optioin securities
1,013 
2,311 
2,178 
5,798 
Funds sold and resell agreements
4 
4 
6 
6 
Total interest revenue
185,041 
203,055 
374,040 
401,263 
Interest expense [Abstract]
 
 
 
 
Deposits
13,909 
16,390 
28,790 
33,888 
Borrowed funds
1,776 
1,792 
3,330 
3,381 
Subordinated debentures
2,200 
3,512 
4,359 
9,064 
Total interest expense
17,885 
21,694 
36,479 
46,333 
Net interest revenue
167,156 
181,361 
337,561 
354,930 
Provision for credit losses
0 
(8,000)
(8,000)
(8,000)
Net interest revenue after provision for credit losses
167,156 
189,361 
345,561 
362,930 
Other operating revenue [Abstract]
 
 
 
 
Brokerage and trading revenue
32,874 
32,600 
64,625 
63,711 
Transaction card revenue
29,942 
26,758 
57,634 
52,188 
Trust fees and commissions
24,803 
19,931 
47,116 
38,369 
Deposit service charges and fees
23,962 
25,216 
46,928 
49,595 
Mortgage banking revenue
36,596 
39,548 
76,572 
72,626 
Bank-owned life insurance
2,236 
2,838 
5,462 
5,709 
Other revenue
10,496 
8,860 
20,683 
18,124 
Total fees and commissions
160,909 
155,751 
319,020 
300,322 
Gain (loss) on assets, net
(1,666)
1,689 
(1,199)
(2,004)
Gain (loss) on derivatives, net
(2,527)
2,345 
(3,468)
(128)
Gain (loss) on fair value option securities, net
(9,156)
6,852 
(12,327)
5,119 
Gain on available for sale securities, net
3,753 
20,481 
8,608 
24,812 
Total other-than-temporary impairment losses
(1,138)
(135)
(1,138)
(640)
Portion of loss recognized in (reclassified from) other comprehensive income
586 
(723)
339 
(3,940)
Net impairment losses recognized in earnings
(552)
(858)
(799)
(4,580)
Total other operating revenue
150,761 
186,260 
309,835 
323,541 
Other operating expense [Abstract]
 
 
 
 
Personnel
128,110 
122,297 
253,764 
237,066 
Business promotion
5,770 
6,746 
11,223 
11,134 
Professional fees and services
8,381 
8,343 
15,366 
15,942 
Net occupancy and equipment
16,909 
16,906 
33,390 
32,929 
Insurance
4,044 
4,011 
7,789 
7,877 
Data processing and communications
26,734 
25,264 
52,184 
47,408 
Printing, postage and supplies
3,580 
3,903 
7,254 
7,214 
Net losses and expenses of repossessed assets
282 
5,912 
1,528 
8,157 
Amortization of intangible assets
875 
545 
1,751 
1,120 
Mortgage banking costs
7,910 
12,315 
15,264 
20,754 
Change in fair value of mortgage servicing rights
(14,315)
11,450 
(16,973)
4,323 
Other expense
8,326 
5,319 
15,390 
11,224 
Total other operating expense
196,606 
223,011 
397,930 
405,148 
Net income before taxes
121,311 
152,610 
257,466 
281,323 
Federal and state income taxes
41,423 
53,149 
88,519 
98,669 
Net income
79,888 
99,461 
168,947 
182,654 
Net income (loss) attributable to non-controlling interest
(43)
1,833 
1,052 
1,411 
Net income attributable to BOK Financial Corporation shareholders
$ 79,931 
$ 97,628 
$ 167,895 
$ 181,243 
Earnings per share: [Abstract]
 
 
 
 
Basic (in dollars per share)
$ 1.16 
$ 1.43 
$ 2.45 
$ 2.66 
Diluted (in dollars per share)
$ 1.16 
$ 1.43 
$ 2.44 
$ 2.65 
Average shares used in computation: [Abstract]
 
 
 
 
Basic (in shares)
67,993,822 
67,472,665 
67,904,599 
67,573,280 
Diluted (in shares)
68,212,497 
67,744,828 
68,126,751 
67,847,659 
Dividends declared per share (in dollars per share)
$ 0.38 
$ 0.38 
$ 0.76 
$ 0.71 
Consolidated Statements of Comprehensive Income (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Statement of Other Comprehensive Income [Abstract]
 
 
 
 
Net income
$ 79,888 
$ 99,461 
$ 168,947 
$ 182,654 
Other comprehensive income before income taxes:
 
 
 
 
Net change in unrealized gain (loss)
(183,186)
(15,401)
(204,545)
40,034 
Reclassification adjustments included in earnings [Abstract]
 
 
 
 
Interest revenue, Investment securities, Taxable securities
(873)
(1,633)
(2,021)
(3,421)
Interest Expense, Subordinated debentures
72 
279 
124 
331 
Net impairment losses recognized in earnings
552 
858 
799 
4,580 
Gain on available for sale securities, net
(3,753)
(20,481)
(8,608)
(24,812)
Other comprehensive income (loss), before income taxes
(187,188)
(36,378)
(214,251)
16,712 
Income tax benefit (expense)
72,819 
14,150 
83,345 1
(6,501)1
Other comprehensive income (loss), net of income taxes
(114,369)
(22,228)
(130,906)
10,211 
Comprehensive income
(34,481)
77,233 
38,041 
192,865 
Comprehensive income (loss) attributable to non-controlling interests
(43)
1,833 
1,052 
1,411 
Comprehensive income attributed to BOK Financial Corp. shareholders
$ (34,438)
$ 75,400 
$ 36,989 
$ 191,454 
Consolidated Balance Sheets (Unaudited) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Assets [Abstract]
 
 
 
Cash and due from banks
$ 1,026,497 
$ 1,266,834 
$ 628,092 
Funds sold and resell agreements
51,888 
19,405 
11,171 
Trading securities
190,591 
214,102 
149,317 
Investment securities
615,790 1
499,534 2
412,479 3
Available for sale securities
10,698,074 
11,287,221 
10,395,415 
Fair value option securities
205,756 
284,296 
325,177 
Residential mortgage loans held for sale
301,057 
293,762 
259,174 
Loans
12,440,782 
12,311,456 
11,576,431 
Allowance for loan losses
(203,124)
(215,507)
(231,669)
Loans, net of allowance
12,237,658 
12,095,949 
11,344,762 
Premises and equipment, net
271,191 
265,920 
261,508 
Receivables
136,605 
114,185 
121,944 
Goodwill
359,759 
361,979 
335,601 
Intangible assets, net
26,242 
28,192 
9,098 
Mortgage servicing rights, net
132,889 
100,812 
91,783 
Real estate and other repossessed assets, net of allowance
110,112 
103,791 
105,708 
Bankers' acceptances
198 
605 
2,873 
Derivative contracts
546,206 
338,106 
366,204 
Cash surrender value of bank-owned life insurance
280,047 
274,531 
269,093 
Receivable on unsettled securities trades
182,147 
211,052 
32,876 
Other assets
435,493 
388,355 
453,771 
Total assets
27,808,200 
28,148,631 
25,576,046 
Liabilities [Abstract]
 
 
 
Noninterest-bearing demand deposits
7,145,323 
8,038,286 
6,440,375 
Interest-bearing deposits: [Abstract]
 
 
 
Transaction
9,266,560 
9,888,038 
8,551,874 
Savings
316,375 
284,744 
261,998 
Time
2,767,972 
2,967,992 
3,107,950 
Total deposits
19,496,230 
21,179,060 
18,362,197 
Funds purchased
747,165 
1,167,416 
1,453,750 
Repurchase agreements
845,106 
887,030 
1,136,948 
Other borrowings
2,481,644 
651,775 
58,056 
Subordinated debentures
347,716 
347,633 
353,378 
Accrued interest, taxes and expense
175,677 
176,678 
140,434 
Bankers' acceptances
198 
605 
2,873 
Derivative contracts
521,991 
283,589 
370,053 
Due on unsettled securities trades
49,369 
297,453 
603,800 
Other liabilities
150,222 
163,711 
171,836 
Total liabilities
24,815,318 
25,154,950 
22,653,325 
Shareholders' equity: [Abstract]
 
 
 
Common stock
4 
4 
4 
Capital surplus
884,238 
859,278 
836,065 
Retained earnings
2,253,810 
2,137,541 
2,086,565 
Treasury stock
(199,429)
(188,883)
(175,890)
Accumulated other comprehensive income
19,014 
149,920 
139,190 
Total shareholders' equity
2,957,637 
2,957,860 
2,885,934 
Non-controlling interest
35,245 
35,821 
36,787 
Total equity
2,992,882 
2,993,681 
2,922,721 
Total liabilities and equity
$ 27,808,200 
$ 28,148,631 
$ 25,576,046 
Consolidated Balance Sheets (Parenthetical) (Unaudited) (USD $)
In Thousands, except Share data, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Investment securities [Abstract]
 
 
 
Investment securities, fair value
$ 625,705 
$ 528,458 
$ 440,638 
Real estate and other repossessed assets, Valuation allowance
$ 26,837 
$ 36,873 
$ 32,730 
Shareholders' equity: [Abstract]
 
 
 
Common stock, par value (in dollars per share)
$ 0.00006 
$ 0.00006 
$ 0.00006 
Common stock, shares authorized (in shares)
2,500,000,000 
2,500,000,000 
2,500,000,000 
Common stock, shares issued (in shares)
73,029,101 
72,415,346 
72,006,628 
Common stock, shares outstanding (in shares)
73,029,101 
72,415,346 
72,006,628 
Treasury stock, shares at cost (in shares)
4,289,893 
4,087,995 
3,862,469 
Consolidated Statements of Changes in Equity (Unaudited) (USD $)
In Thousands
Total
Common Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Capital Surplus [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Total shareholders' Equity [Member]
Non-Controlling Interest [Member]
Balance, beginning of period at Dec. 31, 2011
$ 2,786,652 
$ 4 
$ 128,979 
$ 818,817 
$ 1,953,332 
$ (150,664)
$ 2,750,468 
$ 36,184 
Balance, beginning of period (in shares) at Dec. 31, 2011
 
71,533 
 
 
 
3,380 
 
 
Net income
182,654 
 
 
 
181,243 
 
181,243 
1,411 
Other comprehensive income (loss)
10,211 
 
10,211 
 
 
 
10,211 
 
Treasury stock purchases (in shares)
 
 
 
 
 
384 
 
 
Treasury stock purchases
(20,558)
 
 
 
 
(20,558)
(20,558)
 
Exercise of stock options (in shares)
 
473 
 
 
 
98 
 
 
Exercise of stock options
8,454 
 
 
13,122 
 
(4,668)
8,454 
 
Tax benefit on exercise of stock options
(677)
 
 
(677)
 
 
(677)
 
Stock-based compensation
4,803 
 
 
4,803 
 
 
4,803 
 
Cash dividends on common stock
(48,010)
 
 
 
(48,010)
 
(48,010)
 
Capital calls and distributions, net
(808)
 
 
 
 
 
 
(808)
Balance, end of period at Jun. 30, 2012
2,922,721 
4 
139,190 
836,065 
2,086,565 
(175,890)
2,885,934 
36,787 
Balance, end of period (in shares) at Jun. 30, 2012
 
72,006 
 
 
 
3,862 
 
 
Balance, beginning of period at Dec. 31, 2012
2,993,681 
4 
149,920 
859,278 
2,137,541 
(188,883)
2,957,860 
35,821 
Balance, beginning of period (in shares) at Dec. 31, 2012
 
72,415 
 
 
 
4,088 
 
 
Net income
168,947 
 
 
 
167,895 
 
167,895 
1,052 
Other comprehensive income (loss)
(130,906)
 
(130,906)
 
 
 
(130,906)
 
Treasury stock purchases (in shares)
 
 
 
 
 
0 
 
 
Treasury stock purchases
0 
 
 
 
 
0 
0 
 
Exercise of stock options (in shares)
 
614 
 
 
 
202 
 
 
Exercise of stock options
12,879 
 
 
23,425 
 
(10,546)
12,879 
 
Tax benefit on exercise of stock options
178 
 
 
178 
 
 
178 
 
Stock-based compensation
1,357 
 
 
1,357 
 
 
1,357 
 
Cash dividends on common stock
(51,626)
 
 
 
(51,626)
 
(51,626)
 
Capital calls and distributions, net
(1,628)
 
 
 
 
 
 
(1,628)
Balance, end of period at Jun. 30, 2013
$ 2,992,882 
$ 4 
$ 19,014 
$ 884,238 
$ 2,253,810 
$ (199,429)
$ 2,957,637 
$ 35,245 
Balance, end of period (in shares) at Jun. 30, 2013
 
73,029 
 
 
 
4,290 
 
 
Consolidated Statements of Cash Flows (Unaudited) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Cash Flows From Operating Activities:
 
 
Net income
$ 168,947 
$ 182,654 
Adjustments to reconcile net income to net cash provided by operating activities:
 
 
Provision for credit losses
(8,000)
(8,000)
Change in fair value of mortgage servicing rights
(16,973)
4,323 
Unrealized (gains) losses from derivatives
6,137 
(7,626)
Tax benefit on exercise of stock options
(178)
677 
Change in bank-owned life insurance
(5,462)
(5,709)
Stock-based compensation
1,357 
4,803 
Depreciation and amortization
27,634 
24,636 
Net amortization of securities discounts and premiums
32,867 
47,789 
Net realized gains on financial instruments and other assets
(57,782)
(60,122)
Mortgage loans originated for resale
(2,152,353)
(1,588,200)
Proceeds from sale of mortgage loans held for resale
2,201,324 
1,569,921 
Capitalized mortgage servicing rights
(25,932)
(17,647)
Change in trading and fair value option securities
100,889 
251,682 
Change in receivables
(23,890)
(9,667)
Change in other assets
38,646 
2,838 
Change in accrued interest, taxes and expense
(1,001)
(9,074)
Change in other liabilities
(13,407)
7,888 
Net cash provided by operating activities
272,823 
391,166 
Cash Flows From Investing Activities:
 
 
Proceeds from maturities or redemptions of investment securities
99,020 
43,678 
Proceeds from maturities or redemptions of available for sale securities
1,689,165 
2,486,198 
Purchases of investment securities
(217,160)
(16,971)
Purchases of available for sale securities
(3,173,504)
(4,162,486)
Proceeds from sales of available for sale securities
1,837,970 
1,451,551 
Change in amount receivable on unsettled securities transactions
28,905 
42,275 
Loans originated net of principal collected
(130,381)
(327,349)
Net proceeds from (payments on) derivative asset contracts
(229,888)
(119,495)
Proceeds from disposition of assets
53,191 
101,550 
Purchases of assets
(115,250)
(40,991)
Net cash provided by (used in) investing activities
(157,932)
(542,040)
Cash Flows From Financing Activities:
 
 
Net change in demand deposits, transaction deposits and savings accounts
(1,482,810)
(126,351)
Net change in time deposits
(200,020)
(274,032)
Net change in other borrowed funds
1,311,756 
229,401 
Repayment of subordinated debt
0 
(46,882)
Net payments or proceeds on derivative liability contracts
220,024 
110,249 
Net change in derivative margin accounts
114,958 
21,749 
Change in amount due on unsettled security transactions
(248,084)
(49,571)
Issuance of common and treasury stock, net
12,879 
8,454 
Tax benefit on exercise of stock options
178 
(677)
Repurchase of common stock
0 
(20,558)
Dividends paid
(51,626)
(48,010)
Net cash provided by (used in) financing activities
(322,745)
(196,228)
Net decrease in cash and cash equivalents
(207,854)
(347,102)
Cash and cash equivalents at beginning of period
1,286,239 
986,365 
Cash and cash equivalents at end of period
1,078,385 
639,263 
Cash paid for interest
36,615 
48,536 
Cash paid for taxes
73,527 
81,738 
Net loans and bank premises transferred to repossessed real estate and other assets
52,967 
55,821 
Residential mortgage loans guaranteed by U.S. government agencies that became eligible for repurchase during the period
55,938 
48,486 
Conveyance of other real estate owned guaranteed by U.S. government agencies
$ 22,527 
$ 34,247 
Significant Accounting Policies
Significant Accounting Policies
(1) Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements of BOK Financial Corporation (“BOK Financial” or “the Company”) have been prepared in accordance with accounting principles for interim financial information generally accepted in the United States and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included.

The unaudited consolidated financial statements include accounts of BOK Financial and its subsidiaries, principally BOKF, NA (“the Bank”), BOSC, Inc., The Milestone Group, Inc. and Cavanal Hill Investment Management Inc. Operating divisions of the Bank include Bank of Albuquerque, Bank of Arizona, Bank of Arkansas, Bank of Oklahoma, Bank of Texas, Colorado State Bank and Trust, Bank of Kansas City, BOK Financial Mortgage and the TransFund electronic funds network.

Certain reclassifications have been made to conform to the current period presentation.

The financial information should be read in conjunction with BOK Financial’s 2012 Form 10-K filed with the Securities and Exchange Commission, which contains audited financial statements. Amounts presented as of December 31, 2012 have been derived from the audited financial statements included in BOK Financial’s 2012 Form 10-K but does not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements.  Operating results for the three-month period ended June 30, 2013 are not necessarily indicative of the results that may be expected for the year ending December 31, 2013.

Newly Adopted and Pending Accounting Policies

Financial Accounting Standards Board (“FASB”)

FASB Accounting Standards Update No. 2011-11, Disclosures about Offsetting Assets and Liabilities (“ASU 2011-11”)

On December 16, 2011, the FASB issued ASU 2011-11 which contains new disclosure requirements regarding the nature of an entity right of setoff and related arrangements associated with its financial instruments and derivative instruments. The new disclosures are anticipated to facilitate comparison between financial statements prepared under generally accepted accounting principles in the United States of America and financial statements prepared under International Financial Reporting Standards by providing information about gross and net exposures. The new disclosure requirements were effective for the Company for interim and annual reporting period beginning January 1, 2013.

FASB Accounting Standards Update No. 2013-01, Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities (ASU 2013-01)

On January 31, 2013, FASB issued ASU 2013-01 which clarified the scope of ASU 2011-11 applied for derivative contracts accounted for in accordance with Topic 815, Derivatives and Hedging, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements and securities borrowing and lending transactions that are either offset in accordance with Section 210-20-45 or Section 815-10-45 or subject to an enforceable master netting arrangement or similar agreement. ASU 2013-01 was effective for the Company on January 1, 2013.

FASB Accounting Standards Update No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income ("ASU 2013-02")

On February 7, 2013 the FASB issued ASU 2013-02 which sets the requirements for presentation significant reclassifications out of accumulated other comprehensive income for both items reclassified in their entirety and the respective line items in Statement of Earnings they are being reclassified into and for other amounts that are not reclassified in their entirety to net income during the reporting period, such as items being reclassified to a balance sheet accounts. ASU 2013-02 was effective for the Company on January 1, 2013 and is to be applied prospectively.
Securities
Securities [Text Block]
(2) Securities
Trading Securities
 
The fair value and net unrealized gain (loss) included in trading securities is as follows (in thousands):
 
 
 
June 30, 2013
 
December 31, 2012
 
June 30, 2012
 
 
Fair Value
 
Net Unrealized Gain (Loss)
 
Fair Value
 
Net Unrealized Gain (Loss)
 
Fair
Value
 
Net Unrealized Gain (Loss)
U.S. Government agency debentures
 
$
60,713

 
$
(552
)
 
$
16,545

 
$
(57
)
 
$
53,514

 
$
23

U.S. agency residential mortgage-backed securities
 
43,858

 
38

 
86,361

 
447

 
46,502

 
222

Municipal and other tax-exempt securities
 
53,819

 
(1,271
)
 
90,326

 
(226
)
 
44,632

 
9

Other trading securities
 
32,201

 
(717
)
 
20,870

 
(13
)
 
4,669

 
(14
)
Total
 
$
190,591

 
$
(2,502
)
 
$
214,102

 
$
151

 
$
149,317

 
$
240


Investment Securities
 
The amortized cost and fair values of investment securities are as follows (in thousands):

 
 
June 30, 2013
 
 
Amortized
 
Carrying
 
Fair
 
Gross Unrealized2
 
 
Cost
 
Value1
 
Value
 
Gain
 
Loss
Municipal and other tax-exempt
 
$
375,317

 
$
375,317

 
$
371,690

 
$
2,189

 
$
(5,816
)
U.S. agency residential mortgage-backed securities – Other
 
61,152

 
64,172

 
66,796

 
2,624

 
—

Other debt securities
 
176,301

 
176,301

 
187,219

 
10,978

 
(60
)
Total
 
$
612,770

 
$
615,790

 
$
625,705

 
$
15,791

 
$
(5,876
)
1 
Carrying value includes $3.0 million of net unrealized gain which remains in Accumulated other comprehensive income (“AOCI”) related to certain securities transferred from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following.
2 
Gross unrealized gains and losses are not recognized in AOCI in the Consolidated Balance Sheets.
 
 
December 31, 2012
 
 
Amortized
 
Carrying
 
Fair
 
Gross Unrealized2
 
 
Cost
 
Value1
 
Value
 
Gain
 
Loss
Municipal and other tax-exempt
 
$
232,700

 
$
232,700

 
$
235,940

 
$
3,723

 
$
(483
)
U.S. agency residential mortgage-backed securities – Other
 
77,726

 
82,767

 
85,943

 
3,176

 
—

Other debt securities
 
184,067

 
184,067

 
206,575

 
22,528

 
(20
)
Total
 
$
494,493

 
$
499,534

 
$
528,458

 
$
29,427

 
$
(503
)
1 
Carrying value includes $5.0 million of net unrealized gain which remains in Accumulated other comprehensive income (“AOCI”) in the Consolidated Balance Sheets related to certain securities transferred from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following.
2 
Gross unrealized gains and losses are not recognized in AOCI in the Consolidated Balance Sheets.
 
 
June 30, 2012
 
 
Amortized
 
Carrying
 
Fair
 
Gross Unrealized2
 
 
Cost
 
Value1
 
Value
 
Gain
 
Loss
Municipal and other tax-exempt
 
$
126,168

 
$
126,168

 
$
130,308

 
$
4,165

 
$
(25
)
U.S. agency residential mortgage-backed securities – Other
 
94,126

 
102,347

 
105,535

 
3,188

 
—

Other debt securities
 
183,964

 
183,964

 
204,795

 
20,831

 
—

Total
 
$
404,258

 
$
412,479

 
$
440,638

 
$
28,184

 
$
(25
)

1 
Carrying value includes $8.2 million of net unrealized gain which remains in Accumulated other comprehensive income (“AOCI”) in the Consolidated Balance Sheets related to certain securities transferred from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following.
2 
Gross unrealized gains and losses are not recognized in AOCI in the Consolidated Balance Sheets.

During the three months ended September 30, 2011, the Company transferred certain U.S. government agency residential mortgage-backed securities from the available for sale portfolio to the investment securities (held-to-maturity) portfolio as the Company has the positive intent and ability to hold these securities to maturity. No gains or losses were recognized in the Consolidated Statement of Earnings at the time of the transfer. Transfers of debt securities into the investment securities portfolio (held-to-maturity) are made at fair value at the date of transfer. The unrealized holding gain or loss at the date of transfer is retained in accumulated other comprehensive income and in the carrying value of the investment securities portfolio.  Such amounts are amortized over the estimated remaining life of the security as an adjustment to yield, offsetting the related amortization of the premium or accretion of the discount on the transferred securities. At the time of transfer, the fair value totaled $131 million, amortized cost totaled $118 million and the pretax unrealized gain totaled $13 million.

The amortized cost and fair values of investment securities at June 30, 2013, by contractual maturity, are as shown in the following table (dollars in thousands):
 
 
Less than
One Year
 
One to
Five Years
 
Six to
Ten Years
 
Over
Ten Years
 
Total
 
Weighted
Average
Maturity²
Municipal and other tax-exempt:
 
 
 
 
 
 
 
 
 
 
 
 
Carrying value
 
$
24,239

 
$
239,869

 
$
101,753

 
$
9,456

 
$
375,317

 
4.15

Fair value
 
24,504

 
238,125

 
99,465

 
9,596

 
371,690

 
 
Nominal yield¹
 
4.22

 
1.68

 
2.21

 
2.73

 
2.01

 
 
Other debt securities:
 
 

 
 

 
 

 
 

 
 

 
 
Carrying value
 
9,681

 
30,987

 
35,164

 
100,469

 
176,301

 
9.06

Fair value
 
9,713

 
31,420

 
36,257

 
109,829

 
187,219

 
 
Nominal yield
 
4.24

 
5.30

 
5.57

 
6.29

 
5.86

 
 
Total fixed maturity securities:
 
 

 
 

 
 

 
 

 
 

 
 
Carrying value
 
$
33,920

 
$
270,856

 
$
136,917

 
$
109,925

 
$
551,618

 
5.72

Fair value
 
34,217

 
269,545

 
135,722

 
119,425

 
558,909

 
 

Nominal yield
 
4.22

 
2.09

 
3.07

 
5.99

 
3.24

 
 

Residential mortgage-backed securities:
 
 

 
 

 
 

 
 

 
 

 
 

Carrying value
 
 

 
 

 
 

 
 

 
$
64,172

 
³

Fair value
 
 

 
 

 
 

 
 

 
66,796

 
 

Nominal yield4
 
 

 
 

 
 

 
 

 
2.72

 
 

Total investment securities:
 
 

 
 

 
 

 
 

 
 

 
 

Carrying value
 
 

 
 

 
 

 
 

 
$
615,790

 
 

Fair value
 
 

 
 

 
 

 
 

 
625,705

 
 

Nominal yield
 
 

 
 

 
 

 
 

 
3.19

 
 

1 
Calculated on a taxable equivalent basis using a 39% effective tax rate.
2 
Expected maturities may differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without penalty.
3 
The average expected lives of residential mortgage-backed securities were 4.1 years based upon current prepayment assumptions.
4 
The nominal yield on residential mortgage-backed securities is based upon prepayment assumptions at the purchase date. Actual yields earned may differ significantly based upon actual prepayments. See Quarterly Financial Summary - Unaudited for current yields on the investment securities portfolio.
Available for Sale Securities 

The amortized cost and fair value of available for sale securities are as follows (in thousands):
 
 
June 30, 2013
 
 
Amortized
 
Fair
 
Gross Unrealized1
 
 
 
 
Cost
 
Value
 
Gain
 
Loss
 
OTTI²
U.S. Treasury
 
$
1,061

 
$
1,060

 
$
—

 
$
(1
)
 
$
—

Municipal and other tax-exempt
 
95,974

 
95,103

 
1,653

 
(1,870
)
 
(654
)
Residential mortgage-backed securities:
 
 

 
 

 
 

 
 

 
 

U. S. government agencies:
 
 

 
 

 
 

 
 

 
 

FNMA
 
4,648,337

 
4,687,141

 
78,285

 
(39,481
)
 
—

FHLMC
 
2,695,506

 
2,715,896

 
32,994

 
(12,604
)
 
—

GNMA
 
916,646

 
925,081

 
11,163

 
(2,728
)
 
—

Other
 
42,563

 
44,677

 
2,114

 
—

 
—

Total U.S. government agencies
 
8,303,052

 
8,372,795

 
124,556

 
(54,813
)
 
—

Private issue:
 
 

 
 

 
 

 
 

 
 

Alt-A loans
 
113,804

 
115,036

 
2,905

 
—

 
(1,673
)
Jumbo-A loans
 
178,581

 
182,139

 
4,129

 
(274
)
 
(297
)
Total private issue
 
292,385

 
297,175

 
7,034

 
(274
)
 
(1,970
)
Total residential mortgage-backed securities
 
8,595,437

 
8,669,970

 
131,590

 
(55,087
)
 
(1,970
)
Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
1,885,585

 
1,846,943

 
343

 
(38,985
)
 
—

Other debt securities
 
35,622

 
35,894

 
479

 
(207
)
 
—

Perpetual preferred stock
 
22,172

 
25,583

 
3,439

 
(28
)
 
—

Equity securities and mutual funds
 
19,990

 
23,521

 
3,736

 
(205
)
 
—

Total
 
$
10,655,841

 
$
10,698,074

 
$
141,240

 
$
(96,383
)
 
$
(2,624
)
1 Gross unrealized gain/loss recognized in AOCI in the consolidated balance sheet.
2 Amounts represent unrealized loss that remains in AOCI after an other-than-temporary credit loss has been recognized in income.
 
 
December 31, 2012
 
 
Amortized
 
Fair
 
Gross Unrealized¹
 
 
 
 
Cost
 
Value
 
Gain
 
Loss
 
OTTI²
U.S. Treasury
 
$
1,000

 
$
1,002

 
$
2

 
$
—

 
$
—

Municipal and other tax-exempt
 
84,892

 
87,142

 
2,414

 
(164
)
 
—

Residential mortgage-backed securities:
 
 
 
 

 
 

 
 

 
 

U. S. government agencies:
 
 

 
 

 
 

 
 

 
 

FNMA
 
5,308,463

 
5,453,549

 
146,247

 
(1,161
)
 
—

FHLMC
 
2,978,608

 
3,045,564

 
66,956

 
—

 
—

GNMA
 
1,215,554

 
1,237,041

 
21,487

 
—

 
—

Other
 
148,025

 
153,667

 
5,642

 
—

 
—

Total U.S. government agencies
 
9,650,650

 
9,889,821

 
240,332

 
(1,161
)
 
—

Private issue:
 
 

 
 

 
 

 
 

 
 

Alt-A loans
 
124,314

 
123,174

 
1,440

 
—

 
(2,580
)
Jumbo-A loans
 
198,588

 
201,989

 
5,138

 
(134
)
 
(1,603
)
Total private issue
 
322,902

 
325,163

 
6,578

 
(134
)
 
(4,183
)
Total residential mortgage-backed securities
 
9,973,552

 
10,214,984

 
246,910

 
(1,295
)
 
(4,183
)
Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
890,746

 
895,075

 
5,006

 
(677
)
 
—

Other debt securities
 
35,680

 
36,389

 
709

 
—

 
—

Perpetual preferred stock
 
22,171

 
25,072

 
2,901

 
—

 
—

Equity securities and mutual funds
 
24,593

 
27,557

 
3,242

 
(278
)
 
—

Total
 
$
11,032,634

 
$
11,287,221

 
$
261,184

 
$
(2,414
)
 
$
(4,183
)
1 Gross unrealized gain/loss recognized in AOCI in the consolidated balance sheet.
2 Amounts represent unrealized loss that remains in AOCI after an other-than-temporary credit loss has been recognized in income.

 
 
June 30, 2012
 
 
Amortized
 
Fair
 
Gross Unrealized1
 
 
 
 
Cost
 
Value
 
Gain
 
Loss
 
OTTI²
U.S. Treasury
 
$
1,001

 
$
1,003

 
$
2

 
$
—

 
$
—

Municipal and other tax-exempt
 
86,808

 
88,458

 
2,430

 
(187
)
 
(593
)
Residential mortgage-backed securities:
 


 


 


 


 


U. S. government agencies:
 
 

 
 

 
 

 
 

 
 

FNMA
 
5,270,918

 
5,426,832

 
156,699

 
(785
)
 
—

FHLMC
 
3,527,123

 
3,607,060

 
81,679

 
(1,742
)
 
—

GNMA
 
645,103

 
674,006

 
28,973

 
(70
)
 
—

Other
 
188,831

 
195,634

 
6,803

 
—

 
—

Total U.S. government agencies
 
9,631,975

 
9,903,532

 
274,154

 
(2,597
)
 
—

Private issue:
 
 

 
 

 
 

 
 

 
 

Alt-A loans
 
134,266

 
118,414

 
—

 
—

 
(15,852
)
Jumbo-A loans
 
219,917

 
199,347

 
618

 
(943
)
 
(20,245
)
Total private issue
 
354,183

 
317,761

 
618

 
(943
)
 
(36,097
)
Total residential mortgage-backed securities
 
9,986,158

 
10,221,293

 
274,772

 
(3,540
)
 
(36,097
)
Other debt securities
 
35,739

 
36,286

 
559

 
(12
)
 
—

Perpetual preferred stock
 
22,171

 
23,431

 
1,812

 
(552
)
 
—

Equity securities and mutual funds
 
21,285

 
24,944

 
3,989

 
(330
)
 
—

Total
 
$
10,153,162

 
$
10,395,415

 
$
283,564

 
$
(4,621
)
 
$
(36,690
)
1 
Gross unrealized gain/loss recognized in AOCI in the consolidated balance sheet
2 
Amounts represent unrealized loss that remains in AOCI after an other-than-temporary credit loss has been recognized in income.

The amortized cost and fair values of available for sale securities at June 30, 2013, by contractual maturity, are as shown in the following table (dollars in thousands):
 
Less than
One Year
 
One to
Five Years
 
Six to
Ten Years
 
Over
Ten Years
 
Total
 
Weighted
Average
Maturity5
U.S. Treasuries:
 
 
 
 
 
 
 
 
 
 
 
Amortized cost
$
1,061

 
$
—

 
$
—

 
$
—

 
$
1,061

 
1.68

Fair value
1,060

 
—

 
—

 
—

 
1,060

 
 
Nominal yield
0.24

 
—

 
—

 
—

 
0.24

 
 
Municipal and other tax-exempt:
 

 
 

 
 

 
 

 
 
 
 
Amortized cost
1,684

 
33,591

 
6,382

 
54,317

 
95,974

 
14.84

Fair value
1,705

 
34,777

 
6,621

 
52,000

 
95,103

 
 
Nominal yield¹
—

 
0.95

 
0.69

 
2.55

6 
1.82

 
 
Commercial mortgage-backed securities:
 
 
 
 
 
 
 
 
 
 
 
Amortized cost
—

 
414,587

 
1,150,171

 
320,827

 
1,885,585

 
10.74

Fair value
—

 
409,069

 
1,121,016

 
316,858

 
1,846,943

 
 
Nominal yield
—

 
1.08

 
1.34

 
1.35

 
1.28

 
 
Other debt securities:
 

 
 

 
 

 
 

 
 
 
 
Amortized cost
—

 
30,222

 
—

 
5,400

 
35,622

 
5.98

Fair value
—

 
30,701

 
—

 
5,193

 
35,894

 
 
Nominal yield
—

 
1.80

 
—

 
1.41

6 
1.74

 
 
Total fixed maturity securities:
 

 
 

 
 

 
 

 
 
 
 
Amortized cost
$
2,745

 
$
478,400

 
$
1,156,553

 
$
380,544

 
$
2,018,242

 
10.84

Fair value
2,765

 
474,547

 
1,127,637

 
374,051

 
1,979,000

 
 
Nominal yield
0.09

 
1.12

 
1.33

 
1.52

 
1.32

 
 
Residential mortgage-backed securities:
 

 
 

 
 

 
 

 
 
 
 
Amortized cost
 

 
 

 
 

 
 

 
8,595,437

 
2 

Fair value
 

 
 

 
 

 
 

 
8,669,970

 
 
Nominal yield4
 

 
 

 
 

 
 

 
1.97

 
 
Equity securities and mutual funds:
 

 
 

 
 

 
 

 
 

 
 

Amortized cost
 

 
 

 
 

 
 

 
42,162

 
³

Fair value
 

 
 

 
 

 
 

 
49,104

 
 

Nominal yield
 

 
 

 
 

 
 

 
1.30

 
 

Total available-for-sale securities:
 

 
 

 
 

 
 

 
 
 
 

Amortized cost
 

 
 

 
 

 
 

 
$
10,655,841

 
 

Fair value
 

 
 

 
 

 
 

 
10,698,074

 
 

Nominal yield
 

 
 

 
 

 
 

 
1.85

 
 

1 
Calculated on a taxable equivalent basis using a 39% effective tax rate.
2 
The average expected lives of mortgage-backed securities were 3.5 based upon current prepayment assumptions.
3 
Primarily common stock and preferred stock of corporate issuers with no stated maturity.
4 
The nominal yield on mortgage-backed securities is based upon prepayment assumptions at the purchase date. Actual yields earned may differ significantly based upon actual prepayments. See Quarterly Financial Summary –– Unaudited following for current yields on available for sale securities portfolio.
5 
Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalty.
6 
Nominal yield on municipal and other tax-exempt securities and other debt securities with contractual maturity dates over ten years are based on variable rates which generally are reset within 35 days.

Sales of available for sale securities resulted in gains and losses as follows (in thousands):
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2013
 
2012
 
2013
 
2012
Proceeds
$
1,083,001

 
$
459,610

 
$
1,837,970

 
$
1,451,551

Gross realized gains
9,992

 
20,481

 
15,784

 
32,166

Gross realized losses
(6,239
)
 
—

 
(7,176
)
 
(7,354
)
Related federal and state income tax expense
1,460

 
7,967

 
3,349

 
9,652



A summary of investment and available for sale securities that have been pledged as collateral for repurchase agreements, public trust funds on deposit and for other purposes, as required by law was as follows (in thousands):
 
June 30, 2013
 
December 31, 2012
 
June 30, 2012
Investment:
 
 
 
 
 
Carrying value
$
97,286

 
$
117,346

 
$
156,852

Fair value
100,644

 
121,647

 
162,391

 
 
 
 
 
 
Available for sale:
 
 
 
 
 
Amortized cost
5,078,098

 
4,070,250

 
3,552,776

Fair value
5,103,507

 
4,186,390

 
3,686,838



The secured parties do not have the right to sell or re-pledge these securities. At December 31, 2012, municipal trading securities with a fair value of $13 million were pledged as collateral on a line of credit for the trading activities of BOSC, Inc. Under the terms of the credit agreement, the creditor has the right to sell or repledge the collateral. There were no securities pledged under this line of credit at June 30, 2013 or June 30, 2012.

Temporarily Impaired Securities as of June 30, 2013
(in thousands):

 
 
Number of Securities
 
Less Than 12 Months
 
12 Months or Longer
 
Total
 
 
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
Investment:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax-exempt
 
149

 
$
271,897

 
$
5,816

 
$
—

 
$
—

 
$
271,897

 
$
5,816

U.S. Agency residential mortgage-backed securities – Other
 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other debt securities
 
14

 
841

 
60

 
—

 
—

 
841

 
60

Total investment
 
163

 
$
272,738

 
$
5,876

 
$
—

 
$
—

 
$
272,738

 
$
5,876

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for sale:
 
 

 
 

 
 

 
 

 
 

 
 

 
 

U.S. Treasury
 
1

 
$
1,060

 
$
1

 
$
—

 
$
—

 
$
1,060

 
$
1

Municipal and other tax-exempt1
 
86

 
$
66,168

 
$
2,524

 
$
—

 
$
—

 
$
66,168

 
$
2,524

Residential mortgage-backed securities:
 
 
 
 

 
 

 
 

 
 

 


 


U. S. agencies:
 
 
 
 

 
 

 
 

 
 

 


 


FNMA
 
72

 
2,196,603

 
39,481

 
—

 
—

 
2,196,603

 
39,481

FHLMC
 
38

 
1,202,545

 
12,604

 
—

 
—

 
1,202,545

 
12,604

GNMA
 
13

 
197,149

 
2,728

 
—

 
—

 
197,149

 
2,728

Total U.S. agencies
 
123

 
3,596,297

 
54,813

 
—

 
—

 
3,596,297

 
54,813

Private issue1:
 
 

 
 

 
 

 
 

 
 

 


 


Alt-A loans
 
10

 
51,681

 
1,236

 
3,379

 
437

 
55,060

 
1,673

Jumbo-A loans
 
2

 
17,615

 
296

 
12,298

 
275

 
29,913

 
571

Total private issue
 
12

 
69,296

 
1,532

 
15,677

 
712

 
84,973

 
2,244

Total residential mortgage-backed securities
 
135

 
3,665,593

 
56,345

 
15,677

 
712

 
3,681,270

 
57,057

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
113

 
1,730,306

 
38,985

 
—

 
—

 
1,730,306

 
38,985

Other debt securities
 
4

 
5,193

 
207

 
—

 
—

 
5,193

 
207

Perpetual preferred stocks
 
1

 
4,973

 
28

 
—

 
—

 
4,973

 
28

Equity securities and mutual   funds
 
7

 
3,558

 
205

 
—

 
—

 
3,558

 
205

Total available for sale
 
347

 
$
5,476,851

$
—

$
98,295

$
—

$
15,677

$
—

$
712

$
—

$
5,492,528

$
—

$
99,007

1Includes the following securities for which an unrealized loss remains in AOCI after an other-than-temporary credit loss has been recognized in income:
Municipal and other tax-exempt
 
21

 
$
11,731

 
$
654

 
$
—

 
$
—

 
$
11,731

 
$
654

Alt-A loans
 
10

 
51,681

 
1,236

 
3,379

 
437

 
55,060

 
1,673

Jumbo-A loans
 
2

 
17,615

 
296

 
—

 
—

 
17,615

 
296


Temporarily Impaired Securities as of December 31, 2012
(In thousands)

 
 
Number of Securities
 
Less Than 12 Months
 
12 Months or Longer
 
Total
 
 
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
Investment:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax- exempt
 
53

 
$
92,768

 
$
483

 
$
—

 
$
—

 
$
92,768

 
$
483

U.S. Agency residential mortgage-backed securities – Other
 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other debt securities
 
14

 
881

 
20

 
—

 
—

 
881

 
20

Total investment
 
67

 
$
93,649

 
$
503

 
$
—

 
$
—

 
$
93,649

 
$
503

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for sale:
 
 

 
 

 
 

 
 

 
 

 


 


Municipal and other tax-exempt
 
38

 
$
6,150

 
$
11

 
$
26,108

 
$
153

 
$
32,258

 
$
164

Residential mortgage-backed securities:
 
 

 
 

 
 

 
 

 
 

 


 


U. S. agencies:
 
 

 
 

 
 

 
 

 
 

 


 


FNMA
 
12

 
161,828

 
1,161

 
—

 
—

 
161,828

 
1,161

FHLMC
 
—

 
—

 
—

 
—

 
—

 
—

 
—

GNMA
 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total U.S. agencies
 
12

 
161,828

 
1,161

 
—

 
—

 
161,828

 
1,161

Private issue1:
 
 

 
 

 
 

 
 

 
 

 


 


Alt-A loans
 
12

 
—

 
—

 
87,907

 
2,580

 
87,907

 
2,580

Jumbo-A loans
 
11

 
—

 
—

 
43,252

 
1,737

 
43,252

 
1,737

Total private issue
 
23

 
—

 
—

 
131,159

 
4,317

 
131,159

 
4,317

Total residential mortgage-backed securities
 
35

 
161,828

 
1,161

 
131,159

 
4,317

 
292,987

 
5,478

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
8

 
275,065

 
677

 
—

 
—

 
275,065

 
677

Other debt securities
 
3

 
4,899

 
—

 
—

 
—

 
4,899

 
—

Perpetual preferred stocks
 
—

 
—

 
—

 
—

 
—

 
—

 
—

Equity securities and mutual funds
 
22

 
202

 
1

 
2,161

 
277

 
2,363

 
278

Total available for sale
 
106

 
$
448,144

 
$
1,850

 
$
159,428

 
$
4,747

 
$
607,572

 
$
6,597

1 
Includes the following securities for which an unrealized loss remains in AOCI after an other-than-temporary credit loss has been recognized in income:
Alt-A loans
 
12

 
$
—

 
$
—

 
$
87,907

 
$
2,580

 
$
87,907

 
$
2,580

Jumbo-A loans
 
10

 
—

 
—

 
29,128

 
1,602

 
29,128

 
1,602


Temporarily Impaired Securities as of June 30, 2012
(In thousands)

 
 
Number of Securities
 
Less Than 12 Months
 
12 Months or Longer
 
Total
 
 
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
Investment:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax- exempt
 
6

 
$
9,321

 
$
25

 
$
—

 
$
—

 
$
9,321

 
$
25

U.S. Agency residential mortgage-backed securities – Other
 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other debt securities
 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total investment
 
6

 
$
9,321

 
$
25

 
$
—

 
$
—

 
$
9,321

 
$
25

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for sale:
 
 

 
 

 
 

 
 

 
 

 


 


Municipal and other tax-exempt1
 
66

 
$
21,950

 
$
640

 
$
27,864

 
$
140

 
$
49,814

 
$
780

Residential mortgage-backed securities:
 
 

 
 

 
 

 
 

 
 

 


 


U. S. agencies:
 
 

 
 

 
 

 
 

 
 

 


 


FNMA
 
13

 
528,649

 
785

 
—

 
—

 
528,649

 
785

FHLMC
 
10

 
438,190

 
1,742

 
—

 
—

 
438,190

 
1,742

GNMA
 
2

 
74,789

 
70

 
—

 
—

 
74,789

 
70

Total U.S. agencies
 
25

 
1,041,628

 
2,597

 
—

 
—

 
1,041,628

 
2,597

Private issue1:
 
 

 
 

 
 

 
 

 
 

 


 


Alt-A loans
 
16

 
—

 
—

 
118,414

 
15,852

 
118,414

 
15,852

Jumbo-A loans
 
27

 
—

 
—

 
174,234

 
21,188

 
174,234

 
21,188

Total private issue
 
43

 
—

 
—

 
292,648

 
37,040

 
292,648

 
37,040

Total residential mortgage-backed securities
 
68

 
1,041,628

 
2,597

 
292,648

 
37,040

 
1,334,276

 
39,637

Other debt securities
 
2

 
—

 
—

 
988

 
12

 
988

 
12

Perpetual preferred stocks
 
5

 
10,717

 
552

 
—

 
—

 
10,717

 
552

Equity securities and mutual funds
 
12

 
2,579

 
330

 
—

 
—

 
2,579

 
330

Total available for sale
 
153

 
$
1,076,874

 
$
4,119

 
$
321,500

 
$
37,192

 
$
1,398,374

 
$
41,311

1 
Includes the following securities for which an unrealized loss remains in AOCI after an other-than-temporary credit loss has been recognized in income:
Municipal and other tax-exempt
 
21

 
12,804

 
593

 
—

 
—

 
12,804

 
593

Alt-A loans
 
16

 
—

 
—

 
118,414

 
15,852

 
118,414

 
15,852

Jumbo-A loans
 
27

 
—

 
—

 
162,754

 
20,245

 
162,754

 
20,245



On a quarterly basis, the Company performs separate evaluations of impaired debt and equity investments and available for sale securities to determine if the unrealized losses are temporary.
 
For debt securities, management determines whether it intends to sell or if it is more-likely-than-not that it will be required to sell impaired securities. This determination considers current and forecasted liquidity requirements, regulatory and capital requirements and securities portfolio management. Based on this evaluation as of June 30, 2013, we do not intend to sell any impaired available for sale securities before fair value recovers to our current amortized cost and it is more-likely-than-not that we will not be required to sell impaired securities before fair value recovers, which may be maturity.

Impairment of debt securities rated investment grade by all nationally-recognized rating agencies are considered temporary unless specific contrary information is identified. None of the debt securities rated investment grade were considered to be other-than-temporarily impaired at June 30, 2013.
At June 30, 2013, the composition of the Company’s investment and available for sale securities portfolios by the lowest current credit rating assigned by any of the three nationally-recognized rating agencies is as follows (in thousands):
 
 
 
U.S. Govt / GSE 1
 

AAA - AA
 
 
A - BBB
 
 
Below Investment Grade
 
 
Not Rated
 
 
Total
 
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
Investment:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax-exempt
 
$
—

 
$
—

 
$
271,541

 
$
266,827

 
$
24,565

 
$
24,834

 
$
—

 
$
—

 
$
79,211

 
$
80,029

 
$
375,317

 
$
371,690

Mortgage-backed securities -- other
 
64,172

 
66,796

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
64,172

 
66,796

Other debt securities
 
—

 
—

 
167,463

 
178,378

 
600

 
600

 
—

 
—

 
8,238

 
8,241

 
176,301

 
187,219

Total investment securities
 
$
64,172

 
$
66,796

 
$
439,004

 
$
445,205

 
$
25,165

 
$
25,434

 
$
—

 
$
—

 
$
87,449

 
$
88,270

 
$
615,790

 
$
625,705

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Govt / GSE 1
 
AAA - AA
 
 
A - BBB
 
Below Investment Grade
 
Not Rated
 
Total
 
 
Amortized Cost
 
Fair
Value
 
Amortized Cost
 
Fair Value
 
Amortized Cost
 
Fair Value
 
Amortized Cost
 
Fair Value
 
Amortized Cost
 
Fair Value
 
Amortized Cost
 
Fair
Value
Available for Sale:
 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

U.S. Treasury
 
$
1,061

 
$
1,060

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
1,061

 
$
1,060

Municipal and other tax-exempt
 
—

 
—

 
60,895

 
61,295

 
22,695

 
22,077

 
12,384

 
11,731

 
—

 
—

 
95,974

 
95,103

Residential mortgage-backed securities:
 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 


 


U. S. government agencies:
 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 


 


FNMA
 
4,648,337

 
4,687,141

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
4,648,337

 
4,687,141

FHLMC
 
2,695,506

 
2,715,896

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
2,695,506

 
2,715,896

GNMA
 
916,646

 
925,081

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
916,646

 
925,081

Other
 
42,563

 
44,677

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
42,563

 
44,677

Total U.S. government agencies
 
8,303,052

 
8,372,795

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
8,303,052

 
8,372,795

Private issue:
 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 


 


Alt-A loans
 
—

 
—

 
—

 
—

 
—

 
—

 
113,804

 
115,036

 
—

 
—

 
113,804

 
115,036

Jumbo-A loans
 
—

 
—

 
—

 
—

 
—

 
—

 
178,581

 
182,139

 
—

 
—

 
178,581

 
182,139

Total private issue
 
—

 
—

 
—

 
—

 
—

 
—

 
292,385

 
297,175

 
—

 
—

 
292,385

 
297,175

Total residential mortgage-backed securities
 
8,303,052

 
8,372,795

 
—

 
—

 
—

 
—

 
292,385

 
297,175

 
—

 
—

 
8,595,437

 
8,669,970

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
1,885,585

 
1,846,943

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
1,885,585

 
1,846,943

Other debt securities
 
—

 
—

 
5,400

 
5,193

 
30,222

 
30,701

 
—

 
—

 
—

 
—

 
35,622

 
35,894

Perpetual preferred stock
 
—

 
—

 
—

 
—

 
22,172

 
25,583

 
—

 
—

 
—

 
—

 
22,172

 
25,583

Equity securities and mutual funds
 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
19,990

 
23,521

 
19,990

 
23,521

Total available for sale securities
 
$
10,189,698

 
$
10,220,798

 
$
66,295

 
$
66,488

 
$
75,089

 
$
78,361

 
$
304,769

 
$
308,906

 
$
19,990

 
$
23,521

 
$
10,655,841

 
$
10,698,074

1 
U.S. government and government sponsored enterprises are not rated by the nationally-recognized rating agencies as these securities are guaranteed by agencies of the U.S. government or government-sponsored enterprises.

At June 30, 2013, the entire portfolio of privately issued residential mortgage-backed securities was rated below investment grade. The gross unrealized loss on these securities totaled $2.2 million. Ratings by the nationally-recognized rating agencies are subjective in nature and accordingly ratings can vary significantly amongst the agencies. Limitations generally expressed by the rating agencies include statements that ratings do not predict the specific percentage default likelihood over any given period of time and that ratings do not opine on expected loss severity of an obligation should the issuer default. As such, the impairment of securities rated below investment grade was evaluated to determine if we expect not to recover the entire amortized cost basis of the security. This evaluation was based on projections of estimated cash flows based on individual loans underlying each security using current and anticipated increases in unemployment and default rates, decreases in housing prices and estimated liquidation costs at foreclosure.

The primary assumptions used in this evaluation were:

 
June 30, 2013
 
December 31, 2012
 
6/30/2012
 
 
 
 
 
 
Unemployment rate
Increasing to 8% over the next 12 months and remain at 8% thereafter
 
Increasing to 8.5% over the next 12 months, dropping to 8% over the following 21 months and holding at 8% thereafter.
 
Increasing to 9.5% over the next 12 months, dropping to 8% over the following 21 months and holding at 8% thereafter.
Housing price appreciation/depreciation
Starting with current depreciated housing prices based on information derived from the FHFA1, appreciating 5% over the next 12 months, then flat for the following 12 months and then appreciating at 2% per year thereafter.
 
Starting with current depreciated housing prices based on information derived from the FHFA1, depreciating 2% over the next 12 months, then flat for the following 12 months and then appreciating at 2% per year thereafter.
 
Starting with current depreciated housing prices based on information derived from the FHFA1, depreciating 6% over the next 12 months and then appreciating at 2% per year thereafter.
Estimated liquidation costs
Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company.
 
Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company.
 
Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company.
Discount rates
Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields.
 
Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields.
 
Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields.


We also consider the current loan-to-value ratio and remaining credit enhancement as part of the assessment of the cash flows available to recover the amortized cost of the debt securities. Each factor is considered in the evaluation.

The Company calculates the current loan-to-value ratio for each mortgage-backed security using loan-level data. Current loan-to-value ratio is the current outstanding loan amount divided by an estimate of the current home value. The current home value is derived from FHFA data. FHFA provides historical information on home price depreciation at both the Metropolitan Statistical Area and state level.  This information is matched to each loan to estimate the home price depreciation. Data is accumulated from the loan level to determine the current loan-to-value ratio for the security as a whole.

Remaining credit enhancement is the amount of credit enhancement available to absorb current projected losses within the pool of loans that support the security. The Company acquires the benefit of credit enhancement by investing in super-senior tranches for many of our residential mortgage-backed securities. Subordinated tranches held by other investors are specifically designed to absorb losses before the super-senior tranches which effectively increased the typical credit support for these types of bonds. Current projected losses consider depreciation of home prices based on FHFA data, estimated costs and additional losses to liquidate collateral and delinquency status of the individual loans underlying the security.

Credit loss impairment is recorded as a charge to earnings. Additional impairment based on the difference between the total unrealized loss and the estimated credit loss on these securities is charged against other comprehensive income, net of deferred taxes.

Based upon projected declines in expected cash flows from certain private-label residential mortgage-backed securities, the Company recognized $552 thousand of additional credit loss impairments in earnings during the three months ended June 30, 2013.

A distribution of the amortized cost (after recognition of the other-than-temporary impairment), fair value and credit loss impairments recognized on our privately issued residential mortgage-backed securities is as follows (in thousands, except for number of securities):
 
 
 
 
 
 
 
 
Credit Losses Recognized
 
 
 
 
 
 
 
 
Three months ended
 
 
 
 
 
 
 
 
 
 
June 30, 2013
 
Life-to-date
 
 
Number of Securities
 
Amortized Cost
 
Fair Value
 
Number of
Securities
 
Amount
 
Number of Securities
 
Amount
Alt-A
 
16

 
$
113,804

 
$
115,036

 
1

 
$
552

 
16

 
$
48,986

Jumbo-A
 
33

 
178,581

 
182,139

 
—

 
—

 
31

 
23,452

Total
 
49

 
$
292,385

 
$
297,175

 
1

 
$
552

 
47

 
$
72,438



Impaired equity securities, including perpetual preferred stocks, are evaluated based on management's ability and intent to hold the securities until fair value recovers over periods not to exceed three years. The assessment of the ability and intent to hold these securities focuses on the liquidity needs, asset/liability management objectives and securities portfolio objectives. Factors considered when assessing recovery include forecasts of general economic conditions and specific performance of the issuer, analyst ratings and credit spreads for preferred stocks which have debt-like characteristics. The Company has evaluated the near-term prospects of the investments in relation to the severity and duration of the impairment and based on that evaluation has the ability and intent to hold these investments until a recovery in fair value. Accordingly, all impairment of equity securities was considered temporary at June 30, 2013.

The following is a tabular roll forward of the amount of credit-related OTTI recognized on available for sale debt securities in earnings (in thousands):
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2013
 
2012
 
2013
 
2012
Balance of credit-related OTTI recognized on available for sale debt, beginning of period
 
$
75,475

 
$
72,057

 
$
75,228

 
$
76,131

Additions for credit-related OTTI not previously recognized
 
552

 
135

 
552

 
248

Additions for increases in credit-related OTTI previously recognized when there is no intent to sell and no requirement to sell before recovery of amortized cost
 
—

 
723

 
247

 
4,332

Sales
 
—

 
—

 
—

 
(7,796
)
Balance of credit-related OTTI recognized on available for sale debt securities, end of period
 
$
76,027

 
$
72,915

 
$
76,027

 
$
72,915


Fair Value Option Securities
 
Fair value option securities represent securities which the Company has elected to carry at fair value and separately identified on the Consolidated Balance Sheets with changes in the fair value recognized in earnings as they occur. Certain residential mortgage-backed securities issued by U.S. government agencies and derivative contracts are held as an economic hedge of the mortgage servicing rights. In addition, certain corporate debt securities are economically hedged by derivative contracts to manage interest rate risk. Derivative contracts that have not been designated as hedging instruments effectively modify these fixed rate securities into variable rate securities.

The fair value and net unrealized gain (loss) included in Fair value option securities is as follows (in thousands):
 
 
June 30, 2013
 
December 31, 2012
 
June 30, 2012
 
 
Fair Value
 
Net Unrealized Gain
 
Fair Value
 
Net Unrealized Gain
 
Fair
Value
 
Net Unrealized Gain
U.S. agency residential mortgage-backed securities
 
$
203,816

 
$
(8,048
)
 
$
257,040

 
$
3,314

 
$
299,467

 
$
8,373

Corporate debt securities
 
—

 
—

 
26,486

 
1,409

 
25,710

 
621

Other securities
 
1,940

 
(8
)
 
770

 
47

 
—

 
—

Total
 
$
205,756

 
$
(8,056
)
 
$
284,296

 
$
4,770

 
$
325,177

 
$
8,994

Derivatives
Derivatives
(3) Derivatives
 
Derivative instruments may be used by the Company as part of its interest rate risk management programs or may be offered to customers. All derivative instruments are carried at fair value and changes in fair value are reported in earnings as they occur. Credit risk is also considered in determining fair value.

When bilateral netting agreements or similar arrangements exist between the Company and its counterparties that create a single legal claim or obligation to pay or receive the net amount in settlement of the individual derivative contracts, the Company reports derivative assets and liabilities on a net by derivative contract type by counterparty basis.

Derivative contracts may require the Company to provide or receive cash margin as collateral for derivative assets and liabilities. Derivative assets and liabilities are reported net of cash margin when certain conditions are met. In addition, derivative contacts executed with customers under Customer Risk Management Programs may be secured by non-cash collateral in conjunction with a credit agreement with that customer. Access to collateral, in the event of default is reasonably assured. As of June 30, 2013, a decrease in BOK Financial's credit rating to below investment grade would increase our obligation to post cash margin on existing contracts by approximately $29 million.
 
None of these derivative contracts have been designated as hedging instruments.

Customer Risk Management Programs
 
BOK Financial offers programs to permit its customers to manage various risks, including fluctuations in energy, cattle and other agricultural products, and foreign exchange rates, or to take positions in derivative contracts. Customers may also manage interest rate risk through interest rate swaps used by borrowers to modify interest rate terms of their loans or to-be-announced securities used by mortgage banking customers to hedge their loan production. Derivative contracts are executed between the customers and BOK Financial. Offsetting contracts are executed between BOK Financial and other selected counterparties to minimize its risk of changes in commodity prices, interest rates or foreign exchange rates. The counterparty contracts are identical to customer contracts, except for a fixed pricing spread or fee paid to BOK Financial as profit and compensation for administrative costs and credit risk which is recognized over the life of the contracts and included in other operating revenue – brokerage and trading revenue in the Consolidated Statements of Earnings.
 
Interest Rate Risk Management Programs
 
BOK Financial may use derivative contracts in managing its interest rate sensitivity and as part of its economic hedge of the change in the fair value of mortgage servicing rights. Interest rate swaps are generally used to reduce overall asset sensitivity by converting specific fixed-rate liabilities to floating-rate based on LIBOR. As of June 30, 2013, BOK Financial had interest rate swaps with a notional value of $47 million used as part of the economic hedge of the change in the fair value of the mortgage servicing rights.

As discussed in Note 5, certain derivative contracts not designated as hedging instruments related to mortgage loan commitments and forward sales contracts are included in Residential mortgage loans held for sale on the Consolidated Balance Sheets. See Note 5 for additional discussion of notional, fair value and impact on earnings of these contracts. Forward sales contracts are not considered swaps under the Commodity and Futures Trading Commission final rules.


The following table summarizes the fair values of derivative contracts recorded as “derivative contracts” assets and liabilities in the balance sheet at June 30, 2013 (in thousands):
 
 
Assets
 
 
Notional1
 
Gross Fair Value
 
Netting Adjustments
 
Net Fair Value Before Cash Collateral
 
Cash Collateral
 
Fair Value Net of Cash Collateral
Customer risk management programs:
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
16,351,395

 
$
545,290

 
$
(268,087
)
 
$
277,203

 
$
—

 
$
277,203

Interest rate swaps
 
1,381,836

 
51,745

 
—

 
51,745

 
—

 
51,745

Energy contracts
 
1,501,959

 
65,414

 
(35,376
)
 
30,038

 
(2,537
)
 
27,501

Agricultural contracts
 
207,439

 
5,871

 
(4,658
)
 
1,213

 
—

 
1,213

Foreign exchange contracts
 
177,643

 
177,643

 
—

 
177,643

 
—

 
177,643

Equity option contracts
 
211,595

 
13,469

 
—

 
13,469

 
(2,568
)
 
10,901

Total customer risk management programs
 
19,831,867

 
859,432

 
(308,121
)
 
551,311

 
(5,105
)
 
546,206

Interest rate risk management programs
 
—

 
—

 
—

 
—

 
—

 
—

Total derivative contracts
 
$
19,831,867

 
$
859,432

 
$
(308,121
)
 
$
551,311

 
$
(5,105
)
 
$
546,206

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Liabilities
 
 
Notional¹
 
Gross Fair Value
 
Netting Adjustments
 
Net Fair Value Before Cash Collateral
 
Cash Collateral
 
Fair Value Net of Cash Collateral
Customer risk management programs:
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
16,439,531

 
$
540,540

 
$
(268,087
)
 
$
272,453

 
$
—

 
$
272,453

Interest rate swaps
 
1,381,836

 
52,095

 
—

 
52,095

 
(19,381
)
 
32,714

Energy contracts
 
1,441,957

 
63,515

 
(35,376
)
 
28,139

 
(5,865
)
 
22,274

Agricultural contracts
 
207,329

 
5,824

 
(4,658
)
 
1,166

 
—

 
1,166

Foreign exchange contracts
 
177,187

 
177,187

 
—

 
177,187

 
—

 
177,187

Equity option contracts
 
211,595

 
13,469

 
—

 
13,469

 
—

 
13,469

Total customer risk management programs
 
19,859,435

 
852,630

 
(308,121
)
 
544,509

 
(25,246
)
 
519,263

Interest rate risk management programs
 
47,000

 
2,728

 
—

 
2,728

 
—

 
2,728

Total derivative contracts
 
$
19,906,435

 
$
855,358

 
$
(308,121
)
 
$
547,237

 
$
(25,246
)
 
$
521,991

1 
Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.


The following table summarizes the fair values of derivative contracts recorded as “derivative contracts” assets and liabilities in the balance sheet at December 31, 2012 (in thousands):

 
 
Assets
 
 
Notional
 
Gross Fair Value
 
Netting Adjustments
 
Net Fair Value Before Cash Collateral
 
Cash Collateral
 
Fair Value Net of Cash Collateral
Customer risk management programs:
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
12,850,805

 
$
46,113

 
$
(15,656
)
 
$
30,457

 
$
—

 
$
30,457

Interest rate swaps
 
1,319,827

 
72,201

 
—

 
72,201

 
—

 
72,201

Energy contracts
 
1,346,780

 
82,349

 
(44,485
)
 
37,864

 
(3,464
)
 
34,400

Agricultural contracts
 
212,434

 
3,638

 
(3,164
)
 
474

 
—

 
474

Foreign exchange contracts
 
180,318

 
180,318

 
—

 
180,318

 
—

 
180,318

Equity option contracts
 
211,941

 
12,593

 
—

 
12,593

 
—

 
12,593

Total customer risk management programs
 
16,122,105

 
397,212

 
(63,305
)
 
333,907

 
(3,464
)
 
330,443

Interest rate risk management programs
 
66,000

 
7,663

 
—

 
7,663

 
—

 
7,663

Total derivative contracts
 
$
16,188,105

 
$
404,875

 
$
(63,305
)
 
$
341,570

 
$
(3,464
)
 
$
338,106

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Liabilities
 
 
Notional
 
Gross Fair Value
 
Netting Adjustments
 
Net Fair Value Before Cash Collateral
 
Cash Collateral
 
Fair Value Net of Cash Collateral
Customer risk management programs:
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
13,239,078

 
$
43,064

 
$
(15,656
)
 
$
27,408

 
$
(15,467
)
 
$
11,941

Interest rate swaps
 
1,319,827

 
72,724

 
—

 
72,724

 
(31,945
)
 
40,779

Energy contracts
 
1,334,349

 
83,654

 
(44,485
)
 
39,169

 
(1,769
)
 
37,400

Agricultural contracts
 
212,135

 
3,571

 
(3,164
)
 
407

 
(188
)
 
219

Foreign exchange contracts
 
179,852

 
179,852

 
—

 
179,852

 
—

 
179,852

Equity option contracts
 
211,941

 
12,593

 
—

 
12,593

 
—

 
12,593

Total customer risk management programs
 
16,497,182

 
395,458

 
(63,305
)
 
332,153

 
(49,369
)
 
282,784

Interest rate risk management programs
 
50,000

 
805

 
—

 
805

 
—

 
805

Total derivative contracts
 
$
16,547,182

 
$
396,263

 
$
(63,305
)
 
$
332,958

 
$
(49,369
)
 
$
283,589

1 
Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.




The following table summarizes the fair values of derivative contracts recorded as “derivative contracts” assets and liabilities in the balance sheet at June 30, 2012 (in thousands):
 
 
Assets
 
 
Notional1
 
Gross Fair Value
 
Netting Adjustments
 
Net Fair Value Before Cash Collateral
 
Cash Collateral
 
Fair Value Net of Cash Collateral
Customer risk management programs:
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
13,724,514

 
$
144,158

 
$
(39,377
)
 
$
104,781

 
$
—

 
$
104,781

Interest rate swaps
 
1,271,138

 
77,121

 
—

 
77,121

 
—

 
77,121

Energy contracts
 
1,667,819

 
150,754

 
(75,129
)
 
75,625

 
(50,622
)
 
25,003

Agricultural contracts
 
140,722

 
4,655

 
(3,530
)
 
1,125

 
—

 
1,125

Foreign exchange contracts
 
136,815

 
136,815

 
—

 
136,815

 
—

 
136,815

Equity option contracts
 
218,149

 
13,726

 
—

 
13,726

 
—

 
13,726

Total customer risk management programs
 
17,159,157

 
527,229

 
(118,036
)
 
409,193

 
(50,622
)
 
358,571

Interest rate risk management programs
 
66,000

 
7,633

 
—

 
7,633

 
—

 
7,633

Total derivative contracts
 
$
17,225,157

 
$
534,862

 
$
(118,036
)
 
$
416,826

 
$
(50,622
)
 
$
366,204

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Liabilities
 
 
Notional1
 
Gross Fair Value
 
Netting Adjustments
 
Net Fair Value Before Cash Collateral
 
Cash Collateral
 
Fair Value Net of Cash Collateral
Customer risk management programs:
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
13,579,184

 
$
140,873

 
$
(39,377
)
 
$
101,496

 
$
—

 
$
101,496

Interest rate swaps
 
1,271,138

 
77,671

 
—

 
77,671

 
(29,090
)
 
48,581

Energy contracts
 
1,653,592

 
156,690

 
(75,129
)
 
81,561

 
(13,246
)
 
68,315

Agricultural contracts
 
140,255

 
4,604

 
(3,530
)
 
1,074

 
(223
)
 
851

Foreign exchange contracts
 
136,483

 
136,483

 
—

 
136,483

 
—

 
136,483

Equity option contracts
 
218,149

 
13,726

 
—

 
13,726

 
—

 
13,726

Total customer risk management programs
 
16,998,801

 
530,047

 
(118,036
)
 
412,011

 
(42,559
)
 
369,452

Interest rate risk management programs
 
25,000

 
601

 
—

 
601

 
—

 
601

Total derivative contracts
 
$
17,023,801

 
$
530,648

 
$
(118,036
)
 
$
412,612

 
$
(42,559
)
 
$
370,053

1 
Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.






The following summarizes the pre-tax net gains (losses) on derivative instruments and where they are recorded in the income statement (in thousands):
 
 
Three Months Ended
 
 
June 30, 2013
 
June 30, 2012
 
 
Brokerage
and Trading Revenue
 
Gain (Loss)
on Derivatives, Net
 
Brokerage
and Trading
Revenue
 
Gain (Loss)
on Derivatives,
Net
Customer Risk Management Programs:
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
1,716

 
$
—

 
$
186

 
$
—

Interest rate swaps
 
768

 
—

 
1,231

 
—

Energy contracts
 
2,436

 
—

 
2,588

 
—

Agricultural contracts
 
77

 
—

 
92

 
—

Foreign exchange contracts
 
172

 
—

 
125

 
—

Equity option contracts
 
—

 
—

 
—

 
—

Total customer risk management programs
 
5,169

 
—

 
4,222

 
—

Interest Rate Risk Management Programs
 
—

 
(2,527
)
 
—

 
2,345

Total Derivative Contracts
 
$
5,169

 
$
(2,527
)
 
$
4,222

 
$
2,345


 
 
Six Months Ended
 
 
June 30, 2013
 
June 30, 2012
 
 
Brokerage
and Trading Revenue
 
Gain (Loss)
on Derivatives, Net
 
Brokerage
and Trading
Revenue
 
Gain (Loss)
on Derivatives,
Net
Customer Risk Management Programs:
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
1,701

 
$
—

 
$
1,307

 
$
—

Interest rate swaps
 
1,535

 
—

 
2,144

 
—

Energy contracts
 
4,219

 
—

 
4,898

 
—

Agricultural contracts
 
185

 
—

 
183

 
—

Foreign exchange contracts
 
360

 
—

 
331

 
—

Equity option contracts
 
—

 
—

 
—

 
—

Total customer risk management programs
 
8,000

 
—

 
8,863

 
—

Interest Rate Risk Management Programs
 
—

 
(3,468
)
 
—

 
(128
)
Total Derivative Contracts
 
$
8,000

 
$
(3,468
)
 
$
8,863

 
$
(128
)


Net interest revenue was not significantly impacted by the settlement of amounts receivable or payable on interest rate swaps for the six months ended June 30, 2013 and 2012, respectively.
Loans and Allowances for Credit Losses
Loans
(4) Loans and Allowances for Credit Losses

Loans

Loans are either secured or unsecured based on the type of loan and the financial condition of the borrower. Repayment is generally expected from cash flow or proceeds from the sale of selected assets of the borrower. BOK Financial is exposed to risk of loss on loans due to the borrower’s difficulties, which may arise from any number of factors, including problems within the respective industry or local economic conditions. Access to collateral, in the event of borrower default, is reasonably assured through adherence to applicable lending laws and through sound lending standards and credit review procedures. Accounting policies for all loans, excluding residential mortgage loans guaranteed by U.S. government agencies, are as follows.

Interest is accrued at the applicable interest rate on the principal amount outstanding. Loans are placed on nonaccruing status when, in the opinion of management, full collection of principal or interest is uncertain. Internally risk graded loans are individually evaluated for nonaccruing status quarterly. Non-risk graded loans are generally placed on nonaccruing status when more than 90 days past due or within 60 days of being notified of the borrower bankruptcy filing. Interest previously accrued but not collected is charged against interest income when the loan is placed on nonaccruing status. Payments on nonaccruing loans are applied to principal or recognized as interest income, according to management’s judgment as to the collectability of principal. Loans may be returned to accruing status when, in the opinion of management, full collection of principal and interest, including principal previously charged off, is probable based on improvements in the borrower’s financial condition or a sustained period of performance.

Loans to borrowers experiencing financial difficulties may be modified in troubled debt restructurings ("TDRs"). All TDRs are classified as nonaccruing. Modifications generally consist of extension of payment terms or interest rate concessions and may result either voluntarily through negotiations with the borrower or involuntarily through court order. Generally, principal and accrued but unpaid interest is not voluntarily forgiven.

Performing loans may be renewed under then current collateral value, debt service ratio and other underwriting standards. Nonaccruing loans may be renewed and will remain classified as nonaccruing. 

All loans are charged off when the loan balance or a portion of the loan balance is no longer supported by the paying capacity of the borrower or when the required cash flow is reduced in a TDR. The charge-off amount is determined through a quarterly evaluation of available cash resources and collateral value and charge-offs are taken in the quarter in which the loss is identified. Non-risk graded loans that are past due between 60 and 180 days, based on the loan product type, are charged off. Loans to borrowers whose personal obligation has been discharged through Chapter 7 bankruptcy proceedings are charged off within 60 days of notice of the bankruptcy filing, regardless of payment status.

Loan origination and commitment fees and direct loan acquisition and origination costs are deferred and amortized as an adjustment to yield over the life of the loan or over the commitment period, as applicable.

Qualifying residential mortgage loans guaranteed by U.S. government agencies have been sold into GNMA pools. Under certain performance conditions specified in government programs, the Company may have the right, but not the obligation to repurchase loans from GNMA pools. These loans no longer qualify for sale accounting and are recognized in the Consolidated Balance Sheet. Guaranteed loans are considered impaired because we do not expect to receive all principal and interest based on the loan's contractual terms. The principal balance continues to be guaranteed; however, interest accrues at a curtailed rate as specified in the programs. The carrying value of these loans is reduced based on an estimate of the expected cash flows discounted at the original note rate plus a liquidity spread. Guaranteed loans may be modified in TDRs in accordance with U.S. government agency guidelines. Interest continues to accrue based on the modified rate. Guaranteed loans may either be resold into GNMA pools after a performance period specified by the programs or foreclosed and conveyed to the guarantors.

Loans are disaggregated into portfolio segments and further disaggregated into classes. The portfolio segment is the level at which the Company develops and documents a systematic method for determining its allowance for credit losses. Classes are a further disaggregation of portfolio segments based on the risk characteristics of the loans and the Company’s method for monitoring and assessing credit risk. 

Portfolio segments of the loan portfolio are as follows (in thousands):

 
 
June 30, 2013
 
December 31, 2012
 
 
Fixed
Rate
 
Variable
Rate
 
Non-accrual
 
Total
 
Fixed
Rate
 
Variable
Rate
 
Non-accrual
 
Total
Commercial
 
$
4,265,136

 
$
3,422,115

 
$
20,869

 
$
7,708,120

 
$
4,158,548

 
$
3,458,897

 
$
24,467

 
$
7,641,912

Commercial real estate
 
855,806

 
1,402,597

 
58,693

 
2,317,096

 
845,023

 
1,323,350

 
60,626

 
2,228,999

Residential mortgage
 
1,768,607

 
230,644

 
40,534

 
2,039,785

 
1,747,038

 
251,394

 
46,608

 
2,045,040

Consumer
 
142,737

 
231,007

 
2,037

 
375,781

 
175,412

 
217,384

 
2,709

 
395,505

Total
 
$
7,032,286

 
$
5,286,363

 
$
122,133

 
$
12,440,782

 
$
6,926,021

 
$
5,251,025

 
$
134,410

 
$
12,311,456

Accruing loans past due (90 days)1
 
 

 
 

 
 

 
$
2,460

 
 

 
 

 
 

 
$
3,925

 
 
June 30, 2012
 
 
Fixed
Rate
 
Variable
Rate
 
Non-accrual
 
Total
Commercial
 
$
3,571,513

 
$
3,429,493

 
$
34,529

 
$
7,035,535

Commercial real estate
 
882,100

 
1,187,416

 
80,214

 
2,149,730

Residential mortgage
 
1,708,164

 
271,994

 
22,727

 
2,002,885

Consumer
 
198,305

 
182,964

 
7,012

 
388,281

Total
 
$
6,360,082

 
$
5,071,867

 
$
144,482

 
$
11,576,431

Accruing loans past due (90 days)1
 
 

 
 

 
 

 
$
691

1 
Excludes residential mortgage loans guaranteed by agencies of the U.S. government

At June 30, 2013, $5.3 billion or 42% of the total loan portfolio is to businesses and individuals attributed to the Oklahoma market and $4.0 billion or 32% of our total loan portfolio is to businesses and individuals attributed to the Texas market. These geographic concentrations subject the loan portfolio to the general economic conditions within these areas.

Commercial

Commercial loans represent loans for working capital, facilities acquisition or expansion, purchases of equipment and other needs of commercial customers primarily located within our geographical footprint. Commercial loans are underwritten individually and represent on-going relationships based on a thorough knowledge of the customer, the customer’s industry and market. While commercial loans are generally secured by the customer’s assets including real property, inventory, accounts receivable, operating equipment, interest in mineral rights and other property and may also include personal guarantees of the owners and related parties, the primary source of repayment of the loans is the on-going cash flow from operations of the customer’s business. Inherent lending risk is centrally monitored on a continuous basis from underwriting throughout the life of the loan for compliance with commercial lending policies.

At June 30, 2013, commercial loans attributed to the Oklahoma market totaled $3.0 billion or 39% of the commercial loan portfolio segment and commercial loans attributed to the Texas market totaled $2.8 billion or 37% of the commercial loan portfolio segment.

The commercial loan portfolio segment is further divided into loan classes. The energy loan class totaled $2.4 billion or 19% of total loans at June 30, 2013, including $2.1 billion of outstanding loans to energy producers. Approximately 59% of committed production loans are secured by properties primarily producing oil and 41% are secured by properties producing natural gas. The services loan class totaled $2.2 billion at June 30, 2013. Approximately $1.1 billion of loans in the services category consist of loans with individual balances of less than $10 million.  Businesses included in the services class include community foundations, gaming, public finance, insurance and educational.

Commercial Real Estate

Commercial real estate loans are for the construction of buildings or other improvements to real estate and property held by borrowers for investment purposes primarily within our geographical footprint. We require collateral values in excess of the loan amounts, demonstrated cash flows in excess of expected debt service requirements, equity investment in the project and a portion of the project already sold, leased or permanent financing already secured. The expected cash flows from all significant new or renewed income producing property commitments are stress tested to reflect the risks in varying interest rates, vacancy rates and rental rates. As with commercial loans, inherent lending risks are centrally monitored on a continuous basis from underwriting throughout the life of the loan for compliance with applicable lending policies.

At June 30, 2013, 35% of commercial real estate loans are secured by properties primarily located in the Dallas and Houston areas of Texas. An additional 25% of commercial real estate loans are secured by properties located primarily in the Tulsa and Oklahoma City metropolitan areas of Oklahoma. 

Residential Mortgage and Consumer

Residential mortgage loans provide funds for our customers to purchase or refinance their primary residence or to borrow against the equity in their home. Residential mortgage loans are secured by a first or second mortgage on the customer’s primary residence. Consumer loans include direct loans secured by and for the purchase of automobiles, recreational and marine equipment as well as other unsecured loans. Consumer loans also include indirect automobile loans made through primary dealers. Residential mortgage and consumer loans are made in accordance with underwriting policies we believe to be conservative and are fully documented. Credit scoring is assessed based on significant credit characteristics including credit history, residential and employment stability. Residential mortgage loans retained in the Company’s portfolio are primarily composed of various mortgage programs to support customer relationships including jumbo mortgage loans, non-builder construction loans and special loan programs for high net worth individuals and certain professionals. Jumbo loans may be fixed or variable rate and are fully amortizing. Jumbo loans generally conform to government sponsored entity standards, except that the loan size exceeds maximums required under these standards. These loans generally require a minimum FICO score of 720 and a maximum debt-to-income ratio (“DTI”) of 38%.  Loan-to-value (“LTV”) ratios are tiered from 60% to 100%, depending on the market. Special mortgage programs include fixed and variable fully amortizing loans tailored to the needs of certain healthcare professionals. Variable rate loans are fully indexed at origination and may have fixed rates for three to ten years, then adjust annually thereafter. 

At June 30, 2013, residential mortgage loans included $157 million of loans guaranteed by U.S. government agencies previously sold into GNMA mortgage pools. These loans either have been repurchased or are eligible to be repurchased by the Company when certain defined delinquency criteria are met. Although payments on these loans generally are past due more than 90 days, interest continues to accrue based on the government guarantee.

Home equity loans totaled $787 million at June 30, 2013. Approximately, 70% of the home equity loan portfolio is comprised of first lien loans and 30% of the home equity portfolio is comprised of junior lien loans. Junior lien loans are distributed 76% to amortizing term loans and 24% to revolving lines of credit. Home equity loans generally require a minimum FICO score of 700 and a maximum DTI of 40%. The maximum loan amount available for our home equity loan products is generally $400 thousand. Revolving loans have a 5 year revolving period followed by a 15 year term of amortizing repayments. Interest-only home equity loans may not be extended for any additional revolving time. All other home equity loans may be extended at management's discretion for an additional 5 year revolving term, subject to an update of certain credit information.

Credit Commitments
 
Commitments to extend credit are agreements to lend to a customer as long as there is no violation of conditions established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. At June 30, 2013, outstanding commitments totaled $7.0 billion. Because some commitments are expected to expire before being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. BOK Financial uses the same credit policies in making commitments as it does loans.

The amount of collateral obtained, if deemed necessary, is based upon management’s credit evaluation of the borrower.

Standby letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. Because the credit risk involved in issuing standby letters of credit is essentially the same as that involved in extending loan commitments, BOK Financial uses the same credit policies in evaluating the creditworthiness of the customer. Additionally, BOK Financial uses the same evaluation process in obtaining collateral on standby letters of credit as it does for loan commitments. The term of these standby letters of credit is defined in each commitment and typically corresponds with the underlying loan commitment. At June 30, 2013, outstanding standby letters of credit totaled $454 million. Commercial letters of credit are used to facilitate customer trade transactions with the drafts being drawn when the underlying transaction is consummated. At June 30, 2013, outstanding commercial letters of credit totaled $11 million.

Allowances for Credit Losses

BOK Financial maintains an allowance for loan losses and an accrual for off-balance sheet credit risk. The accrual for off-balance sheet credit risk is maintained at a level that is appropriate to cover estimated losses associated with credit instruments that are not currently recognized as assets such as loan commitments, standby letters of credit or guarantees. As discussed in greater detail in Note 5, the Company also has separate accruals for off-balance sheet credit risk related to residential mortgage loans previously sold with full or partial recourse and for residential mortgage loans sold to government sponsored agencies under standard representations and warranties.

The appropriateness of the allowance for loan losses and accrual for off-balance sheet credit losses (collectively "allowance for credit losses") is assessed by management based on an on-going quarterly evaluation of the probable estimated losses inherent in the portfolio, including probable losses on both outstanding loans and unused commitments.

The allowance for loan losses consists of specific allowances attributed to impaired loans that have not yet been charged down to amounts we expect to recover, general allowances for unimpaired loans based on estimated loss rates by loan class and nonspecific allowances based on general economic conditions, risk concentration and related factors. There have been no material changes in the approach or techniques utilized in developing the allowance for loan losses and the accrual for off-balance sheet credit losses for the three and six months ended June 30, 2013.

Loans are considered to be impaired when it becomes probable that BOK Financial will be unable to collect all amounts due according to the contractual terms of the loan agreements. Internally risk graded loans are evaluated individually for impairment. Substantially all commercial and commercial real estate loans and certain residential mortgage and consumer loans are risk graded based on evaluation of the borrowers' ability to repay. Certain commercial loans and most residential mortgage and consumer loans are small balance, homogeneous pools of loans that are not risk graded. Non-risk graded loans are identified as impaired based on performance status. Generally, non-risk graded loans 90 days or more past due or modified in a TDR or in bankruptcy are considered to be impaired.

Specific allowances for impaired loans are measured by an evaluation of estimated future cash flows discounted at the loans’ initial effective interest rate or the fair value of collateral for certain collateral dependent loans. Collateral value of real property is generally based on third party appraisals that conform to Uniform Standards of Professional Appraisal Practice, less estimated selling costs. Appraised values are on an "as-is" basis and are generally not adjusted by the Company. Updated appraisals are obtained at least annually or more frequently if market conditions indicate collateral values have declined. Collateral value of mineral rights is generally determined by our internal staff of engineers based on projected cash flows under current market conditions. Collateral values and available cash resources that support impaired loans are evaluated quarterly. Historical statistics may be used as a practical way to estimate impairment in limited situations, such as when a collateral dependent loan is identified as impaired at the end of a reporting period, until an updated appraisal of collateral value is received or a full assessment of future cash flows is completed. Estimates of future cash flows and collateral values require significant judgments and may be volatile.

General allowances for unimpaired loans are based on estimated loss rates by loan class. The gross loss rate for each loan class is determined by the greater of the current gross loss rate based on the most recent twelve months or a ten-year gross loss rate. Recoveries are not directly considered in the estimation of loss rates. Recoveries generally do not follow predictable patterns and are not received until well after the charge-off date as a result of protracted legal actions. For risk graded loans, gross loss rates are adjusted for changes in risk grading. For each loan class, the current weighted average risk grade is compared to the long-term average risk grade. This comparison determines whether credit risk in each loan class is increasing or decreasing. Loss rates are adjusted upward or downward in proportion to changes in average risk grading. General allowances for unimpaired loans also consider inherent risks identified for each loan class. Inherent risks consider loss rates that most appropriately represent the current credit cycle and other factors attributable to specific loan classes which have not yet been represented in the gross loss rates or risk grading. These factors include changes in commodity prices or engineering imprecision, which may affect the value of reserves that secure our energy loan portfolio, construction risk that may affect commercial real estate loans, changes in regulations and public policy that may disproportionately impact health care loans and changes in loans products.

Nonspecific allowances are maintained for risks beyond factors specific to a particular loan or loan class. These factors include trends in the economy of our primary lending areas, concentrations in large balance loans and other relevant factors.

An accrual for off-balance sheet credit losses is included in Other liabilities in the Consolidated Balance Sheets. The appropriateness of this accrual is determined in the same manner as the allowance for loan losses.

A provision for credit losses is charged against or credited to earnings in amounts necessary to maintain an appropriate allowance for credit losses. Recoveries of loans previously charged off are added to the allowance when received.

The activity in the allowance for loan losses and the allowance for off-balance sheet credit losses related to loan commitments and standby letters of credit for the three months ended June 30, 2013 is summarized as follows (in thousands):
 
 
Commercial
 
Commercial Real Estate
 
Residential Mortgage
 
Consumer
 
Nonspecific allowance
 
Total
Allowance for loan losses:
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
66,419

 
$
48,528

 
$
40,222

 
$
7,984

 
$
42,812

 
$
205,965

Provision for loan losses
 
223

 
(1,118
)
 
597

 
162

 
(363
)
 
(499
)
Loans charged off
 
(4,538
)
 
(450
)
 
(2,057
)
 
(1,507
)
 
—

 
(8,552
)
Recoveries
 
1,940

 
2,727

 
444

 
1,099

 
—

 
6,210

Ending balance
 
$
64,044

 
$
49,687

 
$
39,206

 
$
7,738

 
$
42,449

 
$
203,124

Allowance for off-balance sheet credit losses:
 
 

 
 

 
 

 
 

 
 

 
 

Beginning balance
 
$
405

 
$
618

 
$
72

 
$
10

 
$
—

 
$
1,105

Provision for off-balance sheet credit losses
 
(3
)
 
560

 
(66
)
 
8

 
—

 
499

Ending balance
 
$
402

 
$
1,178

 
$
6

 
$
18

 
$
—

 
$
1,604

 
 
 
 
 
 
 
 
 
 
 
 
 
Total provision for credit losses
 
$
220

 
$
(558
)
 
$
531

 
$
170

 
$
(363
)
 
$
—


The activity in the allowance for loan losses and the allowance for off-balance sheet credit losses related to loan commitments and standby letters of credit for the six months ended June 30, 2013 is summarized as follows (in thousands):
 
 
Commercial
 
Commercial Real Estate
 
Residential Mortgage
 
Consumer
 
Nonspecific allowance
 
Total
Allowance for loan losses:
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
65,280

 
$
54,884

 
$
41,703

 
$
9,453

 
$
44,187

 
$
215,507

Provision for loan losses
 
(1,733
)
 
(3,798
)
 
323

 
(743
)
 
(1,738
)
 
(7,689
)
Loans charged off
 
(4,836
)
 
(5,250
)
 
(3,836
)
 
(3,539
)
 
—

 
(17,461
)
Recoveries
 
5,333

 
3,851

 
1,016

 
2,567

 
—

 
12,767

Ending balance
 
$
64,044

 
$
49,687

 
$
39,206

 
$
7,738

 
$
42,449

 
$
203,124

Allowance for off-balance sheet credit losses:
 
 

 
 

 
 

 
 

 
 

 
 

Beginning balance
 
$
475

 
$
1,353

 
$
78

 
$
9

 
$
—

 
$
1,915

Provision for off-balance sheet credit losses
 
(73
)
 
(175
)
 
(72
)
 
9

 
—

 
(311
)
Ending balance
 
$
402

 
$
1,178

 
$
6

 
$
18

 
$
—

 
$
1,604

 
 
 
 
 
 
 
 
 
 
 
 
 
Total provision for credit losses
 
$
(1,806
)
 
$
(3,973
)
 
$
251

 
$
(734
)
 
$
(1,738
)
 
$
(8,000
)

The activity in the allowance for loan losses and the allowance for off-balance sheet credit losses related to loan commitments and standby letters of credit for the three months ended June 30, 2012 is summarized as follows (in thousands):

 
 
Commercial
 
Commercial Real Estate
 
Residential Mortgage
 
Consumer
 
Nonspecific allowance
 
Total
Allowance for loan losses:
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
85,972

 
$
62,742

 
$
41,628

 
$
9,517

 
$
44,350

 
$
244,209

Provision for loan losses
 
(2,526
)
 
(6,264
)
 
4,371

 
212

 
(3,492
)
 
(7,699
)
Loans charged off
 
(4,094
)
 
(1,216
)
 
(4,061
)
 
(2,172
)
 
—

 
(11,543
)
Recoveries
 
4,125

 
544

 
750

 
1,283

 
—

 
6,702

Ending balance
 
$
83,477

 
$
55,806

 
$
42,688

 
$
8,840

 
$
40,858

 
$
231,669

Allowance for off-balance sheet credit losses:
 
 

 
 

 
 

 
 

 
 

 
 

Beginning balance
 
$
8,362

 
$
1,575

 
$
82

 
$
29

 
$
—

 
$
10,048

Provision for off-balance sheet credit losses
 
(138
)
 
(150
)
 
(2
)
 
(11
)
 
—

 
(301
)
Ending balance
 
$
8,224

 
$
1,425

 
$
80

 
$
18

 
$
—

 
$
9,747

 
 
 
 
 
 
 
 
 
 
 
 
 
Total provision for credit losses
 
$
(2,664
)
 
$
(6,414
)
 
$
4,369

 
$
201

 
$
(3,492
)
 
$
(8,000
)


The activity in the allowance for loan losses and the allowance for off-balance sheet credit losses related to loan commitments and standby letters of credit for the six months ended June 30, 2012 is summarized as follows (in thousands):

 
 
Commercial
 
Commercial Real Estate
 
Residential Mortgage
 
Consumer
 
Nonspecific allowance
 
Total
Allowance for loan losses:
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
83,443

 
$
67,034

 
$
46,476

 
$
10,178

 
$
46,350

 
$
253,481

Provision for loan losses
 
991

 
(5,143
)
 
898

 
260

 
(5,492
)
 
(8,486
)
Loans charged off
 
(7,028
)
 
(7,941
)
 
(5,847
)
 
(4,401
)
 
—

 
(25,217
)
Recoveries
 
6,071

 
1,856

 
1,161

 
2,803

 
—

 
11,891

Ending balance
 
$
83,477

 
$
55,806

 
$
42,688

 
$
8,840

 
$
40,858

 
$
231,669

Allowance for off-balance sheet credit losses:
 
 

 
 

 
 

 
 

 
 

 
 

Beginning balance
 
$
7,906

 
$
1,250

 
$
91

 
$
14

 
$
—

 
$
9,261

Provision for off-balance sheet credit losses
 
318

 
175

 
(11
)
 
4

 
—

 
486

Ending balance
 
$
8,224

 
$
1,425

 
$
80

 
$
18

 
$
—

 
$
9,747

 
 
 
 
 
 
 
 
 
 
 
 
 
Total provision for credit losses
 
$
1,309

 
$
(4,968
)
 
$
887

 
$
264

 
$
(5,492
)
 
$
(8,000
)



The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment measurement method at June 30, 2013 is as follows (in thousands):

 
 
Collectively Measured
for Impairment
 
Individually Measured
for Impairment
 
Total
 
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related
Allowance
Commercial
 
$
7,687,251

 
$
63,492

 
$
20,869

 
$
552

 
$
7,708,120

 
$
64,044

Commercial real estate
 
2,258,403

 
48,493

 
58,693

 
1,194

 
2,317,096

 
49,687

Residential mortgage
 
1,999,334

 
39,028

 
40,451

 
178

 
2,039,785

 
39,206

Consumer
 
373,744

 
7,618

 
2,037

 
120

 
375,781

 
7,738

Total
 
12,318,732

 
158,631

 
122,050

 
2,044

 
12,440,782

 
160,675

 
 
 
 
 
 
 
 
 
 
 
 
 
Nonspecific allowance
 
—

 
—

 
—

 
—

 
—

 
42,449

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
12,318,732

 
$
158,631

 
$
122,050

 
$
2,044

 
$
12,440,782

 
$
203,124



The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment measurement method at December 31, 2012 is as follows (in thousands):

 
 
Collectively Measured
for Impairment
 
Individually Measured
for Impairment
 
Total
 
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related
Allowance
Commercial
 
$
7,617,445

 
$
65,050

 
$
24,467

 
$
230

 
$
7,641,912

 
$
65,280

Commercial real estate
 
2,168,373

 
51,775

 
60,626

 
3,109

 
2,228,999

 
54,884

Residential mortgage
 
1,998,432

 
40,934

 
46,608

 
769

 
2,045,040

 
41,703

Consumer
 
392,796

 
9,328

 
2,709

 
125

 
395,505

 
9,453

Total
 
12,177,046

 
167,087

 
134,410

 
4,233

 
12,311,456

 
171,320

 
 
 
 
 
 
 
 
 
 
 
 
 
Nonspecific allowance
 
—

 
—

 
—

 
—

 
—

 
44,187

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
12,177,046

 
$
167,087

 
$
134,410

 
$
4,233

 
$
12,311,456

 
$
215,507



The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment measurement method at June 30, 2012 is as follows (in thousands):

 
 
Collectively Measured
for Impairment
 
Individually Measured
for Impairment
 
Total
 
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related
Allowance
Commercial
 
$
7,001,006

 
$
83,199

 
$
34,529

 
$
278

 
$
7,035,535

 
$
83,477

Commercial real estate
 
2,069,516

 
54,526

 
80,214

 
1,280

 
2,149,730

 
55,806

Residential mortgage
 
1,980,158

 
42,453

 
22,727

 
235

 
2,002,885

 
42,688

Consumer
 
381,268

 
8,798

 
7,013

 
42

 
388,281

 
8,840

Total
 
11,431,948

 
188,976

 
144,483

 
1,835

 
11,576,431

 
190,811

 
 
 
 
 
 
 
 
 
 
 
 
 
Nonspecific allowance
 
—

 
—

 
—

 
—

 
—

 
40,858

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
11,431,948

 
$
188,976

 
$
144,483

 
$
1,835

 
$
11,576,431

 
$
231,669

Credit Quality Indicators

The Company utilizes loan class and risk grading as primary credit quality indicators. Substantially all commercial and commercial real estate loans and certain residential mortgage and consumer loans are risk graded based on a quarterly evaluation of the borrowers’ ability to repay the loans. Certain commercial loans and most residential mortgage and consumer loans are small, homogeneous pools that are not risk graded. 

The allowance for loan losses and recorded investment of the related loans by portfolio segment for risk graded and non-risk graded loans at June 30, 2013 is as follows (in thousands):

 
 
Internally Risk Graded
 
Non-Graded
 
Total
 
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related
Allowance
Commercial
 
$
7,689,954

 
$
62,830

 
$
18,166

 
$
1,214

 
$
7,708,120

 
$
64,044

Commercial real estate
 
2,317,096

 
49,687

 
—

 
—

 
2,317,096

 
49,687

Residential mortgage
 
230,359

 
3,753

 
1,809,426

 
35,453

 
2,039,785

 
39,206

Consumer
 
243,384

 
2,316

 
132,397

 
5,422

 
375,781

 
7,738

Total
 
10,480,793

 
118,586

 
1,959,989

 
42,089

 
12,440,782

 
160,675

 
 
 
 
 
 
 
 
 
 
 
 
 
Nonspecific allowance
 
—

 
—

 
—

 
—

 
—

 
42,449

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
10,480,793

 
$
118,586

 
$
1,959,989

 
$
42,089

 
$
12,440,782

 
$
203,124

 
The allowance for loan losses and recorded investment of the related loans by portfolio segment for risk graded and non-risk graded loans at December 31, 2012 is as follows (in thousands):

 
 
Internally Risk Graded
 
Non-Graded
 
Total
 
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related
Allowance
Commercial
 
$
7,624,442

 
$
64,181

 
$
17,470

 
$
1,099

 
$
7,641,912

 
$
65,280

Commercial real estate
 
2,228,999

 
54,884

 
—

 
—

 
2,228,999

 
54,884

Residential mortgage
 
265,503

 
5,270

 
1,779,537

 
36,433

 
2,045,040

 
41,703

Consumer
 
231,376

 
2,987

 
164,129

 
6,466

 
395,505

 
9,453

Total
 
10,350,320

 
127,322

 
1,961,136

 
43,998

 
12,311,456

 
171,320

 
 
 
 
 
 
 
 
 
 
 
 
 
Nonspecific allowance
 
—

 
—

 
—

 
—

 
—

 
44,187

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
10,350,320

 
$
127,322

 
$
1,961,136

 
$
43,998

 
$
12,311,456

 
$
215,507


The allowance for loan losses and recorded investment of the related loans by portfolio segment for risk graded and non-risk graded loans at June 30, 2012 is as follows (in thousands):

 
 
Internally Risk Graded
 
Non-Graded
 
Total
 
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related
Allowance
Commercial
 
$
7,017,925

 
$
82,357

 
$
17,610

 
$
1,120

 
$
7,035,535

 
$
83,477

Commercial real estate
 
2,149,724

 
55,806

 
6

 
—

 
2,149,730

 
55,806

Residential mortgage
 
286,499

 
6,987

 
1,716,386

 
35,701

 
2,002,885

 
42,688

Consumer
 
196,735

 
1,895

 
191,546

 
6,945

 
388,281

 
8,840

Total
 
9,650,883

 
147,045

 
1,925,548

 
43,766

 
11,576,431

 
190,811

 
 
 
 
 
 
 
 
 
 
 
 
 
Nonspecific allowance
 
—

 
—

 
—

 
—

 
—

 
40,858

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
9,650,883

 
$
147,045

 
$
1,925,548

 
$
43,766

 
$
11,576,431

 
$
231,669



Loans are considered to be performing if they are in compliance with the original terms of the agreement, which is consistent with the regulatory guideline of “pass.” Performing also includes loans considered to be “other loans especially mentioned” by regulatory guideline. Other loans especially mentioned are in compliance with the original terms of the agreement but may have a weakness that deserves management’s close attention. Performing loans also include past due residential mortgages that are guaranteed by agencies of the U.S. government.

The risk grading process identified certain criticized loans as potential problem loans. These loans have a well-defined weakness (e.g. inadequate debt service coverage or liquidity or marginal capitalization; repayment may depend on collateral or other risk mitigation) that may jeopardize liquidation of the debt and represent a greater risk due to deterioration in the financial condition of the borrower. This is consistent with the regulatory guideline for “substandard.” Because the borrowers are still performing in accordance with the original terms of the loan agreements, these loans were not placed in nonaccruing status. Known information does, however, cause concern as to the borrowers’ continued compliance with current repayment terms. Nonaccruing loans represent loans for which full collection of principal and interest is uncertain. This is substantially the same criteria used to determine whether a loan is impaired and includes certain loans considered “substandard” and all loans considered “doubtful” by regulatory guidelines.

The following table summarizes the Company’s loan portfolio at June 30, 2013 by the risk grade categories (in thousands): 
 
 
Internally Risk Graded
 
Non-Graded
 
 
 
 
Performing
 
Potential Problem
 
Nonaccrual
 
Performing
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,378,187

 
$
4,282

 
$
2,277

 
$
—

 
$
—

 
$
2,384,746

Services
 
2,170,695

 
26,110

 
7,448

 
—

 
—

 
2,204,253

Wholesale/retail
 
1,167,215

 
1,628

 
6,700

 
—

 
—

 
1,175,543

Manufacturing
 
381,729

 
3,528

 
876

 
—

 
—

 
386,133

Healthcare
 
1,116,089

 
51

 
2,670

 
—

 
—

 
1,118,810

Integrated food services
 
158,674

 
4,877

 
—

 
—

 
—

 
163,551

Other commercial and industrial
 
251,563

 
4,518

 
837

 
18,105

 
61

 
275,084

Total commercial
 
7,624,152

 
44,994

 
20,808

 
18,105

 
61

 
7,708,120

 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

 
 

Construction and land development
 
184,216

 
20,303

 
21,135

 
—

 
—

 
225,654

Retail
 
540,872

 
4,134

 
8,406

 
—

 
—

 
553,412

Office
 
450,790

 
940

 
7,828

 
—

 
—

 
459,558

Multifamily
 
491,864

 
2,141

 
6,447

 
—

 
—

 
500,452

Industrial
 
253,732

 
258

 
—

 
—

 
—

 
253,990

Other commercial real estate
 
296,864

 
12,289

 
14,877

 
—

 
—

 
324,030

Total commercial real estate
 
2,218,338

 
40,065

 
58,693

 
—

 
—

 
2,317,096

 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
219,222

 
4,789

 
6,348

 
839,113

 
26,399

 
1,095,871

Permanent mortgages guaranteed by U.S. government agencies
 
—

 
—

 
—

 
156,804

 
83

 
156,887

Home equity
 
—

 
—

 
—

 
779,323

 
7,704

 
787,027

Total residential mortgage
 
219,222

 
4,789

 
6,348

 
1,775,240

 
34,186

 
2,039,785

 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
—

 
—

 
—

 
15,367

 
1,188

 
16,555

Other consumer
 
242,059

 
930

 
395

 
115,388

 
454

 
359,226

Total consumer
 
242,059

 
930

 
395

 
130,755

 
1,642

 
375,781

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
10,303,771

 
$
90,778

 
$
86,244

 
$
1,924,100

 
$
35,889

 
$
12,440,782


The following table summarizes the Company’s loan portfolio at December 31, 2012 by the risk grade categories (in thousands): 
 
 
Internally Risk Graded
 
Non-Graded
 
 
 
 
Performing
 
Potential Problem
 
Nonaccrual
 
Performing
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,448,954

 
$
9,245

 
$
2,460

 
$
—

 
$
—

 
$
2,460,659

Services
 
2,119,734

 
32,362

 
12,090

 
—

 
—

 
2,164,186

Wholesale/retail
 
1,093,413

 
9,949

 
3,077

 
—

 
—

 
1,106,439

Manufacturing
 
337,132

 
9,345

 
2,007

 
—

 
—

 
348,484

Healthcare
 
1,077,773

 
467

 
3,166

 
—

 
—

 
1,081,406

Integrated food services
 
190,422

 
—

 
684

 
—

 
—

 
191,106

Other commercial and industrial
 
266,329

 
4,914

 
919

 
17,406

 
64

 
289,632

Total commercial
 
7,533,757

 
66,282

 
24,403

 
17,406

 
64

 
7,641,912

 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

 
 

Construction and land development
 
204,010

 
22,952

 
26,131

 
—

 
—

 
253,093

Retail
 
508,342

 
6,327

 
8,117

 
—

 
—

 
522,786

Office
 
405,763

 
15,280

 
6,829

 
—

 
—

 
427,872

Multifamily
 
393,566

 
6,624

 
2,706

 
—

 
—

 
402,896

Industrial
 
241,761

 
265

 
3,968

 
—

 
—

 
245,994

Other commercial real estate
 
351,663

 
11,820

 
12,875

 
—

 
—

 
376,358

Total commercial real estate
 
2,105,105

 
63,268

 
60,626

 
—

 
—

 
2,228,999

 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
242,823

 
10,271

 
12,409

 
831,008

 
27,454

 
1,123,965

Permanent mortgages guaranteed by U.S. government agencies
 
—

 
—

 
—

 
159,955

 
489

 
160,444

Home equity
 
—

 
—

 
—

 
754,375

 
6,256

 
760,631

Total residential mortgage
 
242,823

 
10,271

 
12,409

 
1,745,338

 
34,199

 
2,045,040

 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
—

 
—

 
—

 
33,157

 
1,578

 
34,735

Other consumer
 
229,570

 
1,091

 
715

 
128,978

 
416

 
360,770

Total consumer
 
229,570

 
1,091

 
715

 
162,135

 
1,994

 
395,505

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
10,111,255

 
$
140,912

 
$
98,153

 
$
1,924,879

 
$
36,257

 
$
12,311,456


The following table summarizes the Company’s loan portfolio at June 30, 2012 by the risk grade categories (in thousands): 
 
 
Internally Risk Graded
 
Non-Graded
 
 
 
 
Performing
 
Potential Problem
 
Nonaccrual
 
Performing
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,254,806

 
$
10,959

 
$
3,087

 
$
—

 
$
—

 
$
2,268,852

Services
 
1,937,953

 
40,254

 
10,123

 
—

 
—

 
1,988,330

Wholesale/retail
 
930,912

 
11,597

 
4,175

 
—

 
—

 
946,684

Manufacturing
 
325,024

 
9,832

 
12,230

 
—

 
—

 
347,086

Healthcare
 
979,985

 
1,045

 
3,310

 
—

 
—

 
984,340

Integrated food services
 
205,573

 
696

 
—

 
—

 
—

 
206,269

Other commercial and industrial
 
274,535

 
325

 
1,504

 
17,510

 
100

 
293,974

Total commercial
 
6,908,788

 
74,708

 
34,429

 
17,510

 
100

 
7,035,535

 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

 
 

Construction and land development
 
219,301

 
26,746

 
46,050

 
—

 
—

 
292,097

Retail
 
489,948

 
8,290

 
7,908

 
—

 
—

 
506,146

Office
 
372,398

 
12,352

 
10,589

 
—

 
—

 
395,339

Multifamily
 
348,520

 
6,677

 
3,219

 
—

 
—

 
358,416

Industrial
 
228,452

 
273

 
—

 
—

 
—

 
228,725

Other commercial real estate
 
342,634

 
13,925

 
12,442

 
—

 
6

 
369,007

Total commercial real estate
 
2,001,253

 
68,263

 
80,208

 
—

 
6

 
2,149,730

 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
265,891

 
13,398

 
7,210

 
847,414

 
10,926

 
1,144,839

Permanent mortgages guaranteed by U.S. government agencies
 
—

 
—

 
—

 
162,240

 
—

 
162,240

Home equity
 
—

 
—

 
—

 
691,215

 
4,591

 
695,806

Total residential mortgage
 
265,891

 
13,398

 
7,210

 
1,700,869

 
15,517

 
2,002,885

 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
—

 
—

 
—

 
60,681

 
2,257

 
62,938

Other consumer
 
189,212

 
3,053

 
4,470

 
128,323

 
285

 
325,343

Total consumer
 
189,212

 
3,053

 
4,470

 
189,004

 
2,542

 
388,281

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
9,365,144

 
$
159,422

 
$
126,317

 
$
1,907,383

 
$
18,165

 
$
11,576,431




Impaired Loans

Loans are considered to be impaired when it is probable that the Company will not be able to collect all amounts due according to the contractual terms of the loan agreement. This includes all nonaccruing loans, all loans modified in a TDR and all loans repurchased from GNMA pools.

A summary of impaired loans follows (in thousands):
 
As of
 
For the
 
For the
 
June 30, 2013
 
Three Months Ended
 
Six Months Ended
 
 
 
Recorded Investment
 
 
 
June 30, 2013
 
June 30, 2013
 
Unpaid
Principal
Balance
 
Total
 
With No
Allowance
 
With Allowance
 
Related Allowance
 
Average Recorded
Investment
 
Interest Income Recognized
 
Average Recorded
Investment
 
Interest Income Recognized
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Energy
$
2,277

 
$
2,277

 
$
2,277

 
$
—

 
$
—

 
$
2,327

 
$
—

 
$
2,369

 
$
—

Services
9,631

 
7,448

 
6,283

 
1,165

 
493

 
8,461

 
—

 
9,769

 
—

Wholesale/retail
10,916

 
6,700

 
6,656

 
44

 
11

 
4,470

 
—

 
4,889

 
—

Manufacturing
1,168

 
876

 
876

 
—

 
—

 
1,362

 
—

 
1,442

 
—

Healthcare
3,357

 
2,670

 
2,622

 
48

 
48

 
2,816

 
—

 
2,918

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

 
—

 
342

 
—

Other commercial and industrial
8,398

 
898

 
898

 
—

 
—

 
930

 
—

 
941

 
—

Total commercial
35,747

 
20,869

 
19,612

 
1,257

 
552

 
20,366

 
—

 
22,670

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

Construction and land development
24,752

 
21,135

 
20,841

 
294

 
102

 
22,299

 
—

 
23,633

 
—

Retail
9,827

 
8,406

 
8,406

 
—

 
—

 
8,664

 
—

 
8,262

 
—

Office
9,245

 
7,828

 
7,820

 
8

 
8

 
10,340

 
—

 
7,329

 
—

Multifamily
6,447

 
6,447

 
4,415

 
2,032

 
196

 
5,474

 
—

 
4,577

 
—

Industrial
—

 
—

 
—

 
—

 
—

 
1,099

 
—

 
1,984

 
—

Other real estate loans
17,196

 
14,877

 
13,113

 
1,764

 
888

 
14,060

 
—

 
13,876

 
—

Total commercial real estate
67,467

 
58,693

 
54,595

 
4,098

 
1,194

 
61,936

 
—

 
59,661

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

Permanent mortgage
42,983

 
32,747

 
32,495

 
252

 
178

 
35,450

 
285

 
36,304

 
603

Permanent mortgage guaranteed by U.S. government agencies1
165,431

 
156,887

 
156,887

 
—

 
—

 
158,038

 
1,628

 
162,256

 
3,408

Home equity
7,704

 
7,704

 
7,704

 
—

 
—

 
7,382

 
—

 
6,980

 
—

Total residential mortgage
216,118

 
197,338

 
197,086

 
252

 
178

 
200,870

 
1,913

 
205,540

 
4,011

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

Indirect automobile
1,188

 
1,188

 
1,188

 
—

 
—

 
1,254

 
—

 
1,383

 
—

Other consumer
915

 
849

 
729

 
120

 
120

 
851

 
—

 
990

 
—

Total consumer
2,103

 
2,037

 
1,917

 
120

 
120

 
2,105

 
—

 
2,373

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total
$
321,435

 
$
278,937

 
$
273,210

 
$
5,727

 
$
2,044

 
$
285,277

 
$
1,913

 
$
290,244

 
$
4,011

1 
All permanent mortgage loans guaranteed by U.S. government agencies are considered impaired as we do not expect full collection of contractual principal and interest. At June 30, 2013, $83 thousand of these loans were nonaccruing and $157 million were accruing based on the guarantee by U.S. government agencies.

Generally, no interest income is recognized on impaired loans until all principal balances, including amounts charged-off, are recovered.

A summary of impaired loans at December 31, 2012 follows (in thousands): 
 
 
 
 
Recorded Investment
 
 
 
 
Unpaid
Principal
Balance
 
Total
 
With No
Allowance
 
With Allowance
 
Related Allowance
Commercial:
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,460

 
$
2,460

 
$
2,460

 
$
—

 
$
—

Services
 
15,715

 
12,090

 
11,940

 
150

 
149

Wholesale/retail
 
9,186

 
3,077

 
3,016

 
61

 
15

Manufacturing
 
2,447

 
2,007

 
2,007

 
—

 
—

Healthcare
 
4,256

 
3,166

 
2,050

 
1,116

 
66

Integrated food services
 
684

 
684

 
684

 
—

 
—

Other commercial and industrial
 
8,482

 
983

 
983

 
—

 
—

Total commercial
 
43,230

 
24,467

 
23,140

 
1,327

 
230

 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

Construction and land development
 
44,721

 
26,131

 
25,575

 
556

 
155

Retail
 
9,797

 
8,117

 
8,117

 
—

 
—

Office
 
8,949

 
6,829

 
6,604

 
225

 
21

Multifamily
 
3,189

 
2,706

 
2,706

 
—

 
—

Industrial
 
3,968

 
3,968

 
—

 
3,968

 
2,290

Other real estate loans
 
15,377

 
12,875

 
10,049

 
2,826

 
643

Total commercial real estate
 
86,001

 
60,626

 
53,051

 
7,575

 
3,109

 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
51,153

 
39,863

 
37,564

 
2,299

 
769

Permanent mortgage guaranteed by U.S. government agencies1
 
170,740

 
160,444

 
160,444

 
—

 
—

Home equity
 
6,256

 
6,256

 
6,256

 
—

 
—

Total residential mortgage
 
228,149

 
206,563

 
204,264

 
2,299

 
769

 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
1,578

 
1,578

 
1,578

 
—

 
—

Other consumer
 
1,300

 
1,131

 
1,006

 
125

 
125

Total consumer
 
2,878

 
2,709

 
2,584

 
125

 
125

 
 
 
 
 
 
 
 
 
 
 
Total
 
$
360,258

 
$
294,365

 
$
283,039

 
$
11,326

 
$
4,233

1 
All permanent mortgage loans guaranteed by U.S. government agencies are considered impaired as we do not expect full collection of contractual principal and interest. At December 31, 2012, $489 thousand of these loans were nonaccruing and $160 million were accruing based on the guarantee by U.S. government agencies.

A summary of impaired loans at June 30, 2012 follows (in thousands): 
 
As of
 
For the
 
For the
 
As of June 30, 2012
 
Three Months Ended
 
Six Months Ended
 
 
 
Recorded Investment
 
 
 
June 30, 2012
 
June 30, 2012
 
Unpaid
Principal
Balance
 
Total
 
With No
Allowance
 
With Allowance
 
Related Allowance
 
Average Recorded
Investment
 
Interest Income Recognized
 
Average Recorded
Investment
 
Interest Income Recognized
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Energy
$
3,297

 
$
3,087

 
$
3,087

 
$
—

 
$
—

 
$
1,712

 
$
—

 
$
1,712

 
$
—

Services
18,858

 
10,123

 
9,996

 
127

 
127

 
11,507

 
—

 
13,546

 
—

Wholesale/retail
5,763

 
4,175

 
4,096

 
79

 
20

 
9,782

 
—

 
12,678

 
—

Manufacturing
15,864

 
12,230

 
12,230

 
—

 
—

 
17,816

 
—

 
17,641

 
—

Healthcare
4,400

 
3,310

 
2,069

 
1,241

 
131

 
5,628

 
—

 
4,398

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
9,103

 
1,604

 
1,604

 
—

 
—

 
1,696

 
—

 
1,697

 
—

Total commercial
57,285

 
34,529

 
33,082

 
1,447

 
278

 
48,141

 
—

 
51,672

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 

Construction and land development
78,447

 
46,050

 
45,477

 
573

 
155

 
49,233

 
—

 
53,962

 
—

Retail
9,395

 
7,908

 
5,541

 
2,367

 
905

 
7,051

 
—

 
7,386

 
—

Office
13,744

 
10,589

 
10,364

 
225

 
21

 
10,661

 
—

 
11,023

 
—

Multifamily
3,333

 
3,219

 
3,219

 
—

 
—

 
3,317

 
—

 
3,366

 
—

Industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
14,750

 
12,448

 
11,524

 
924

 
199

 
13,084

 
—

 
13,967

 
—

Total commercial real estate
119,669

 
80,214

 
76,125

 
4,089

 
1,280

 
83,346

 
—

 
89,704

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 

Permanent mortgage
26,504

 
18,136

 
17,519

 
617

 
235

 
20,479

 
398

 
21,751

 
795

Permanent mortgage guaranteed by U.S. government agencies1
166,824

 
162,240

 
162,240

 
—

 
—

 
177,537

 
1,680

 
185,961

 
3,359

Home equity
4,591

 
4,591

 
4,591

 
—

 
—

 
4,616

 
—

 
4,496

 
—

Total residential mortgage
197,919

 
184,967

 
184,350

 
617

 
235

 
202,632

 
2,078

 
212,208

 
4,154

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 

Indirect automobile
2,257

 
2,257

 
2,257

 
—

 
—

 
2,433

 
—

 
2,226

 
—

Other consumer
5,342

 
4,756

 
4,714

 
42

 
42

 
4,910

 
—

 
3,039

 
—

Total consumer
7,599

 
7,013

 
6,971

 
42

 
42

 
7,343

 
—

 
5,265

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total
$
382,472

 
$
306,723

 
$
300,528

 
$
6,195

 
$
1,835

 
$
341,462

 
$
2,078

 
$
358,849

 
$
4,154


1 
All permanent mortgage loans guaranteed by U.S. government agencies are considered impaired as we do not expect full collection of contractual principal and interest. At June 30, 2012, all of these loans were accruing based on the guarantee by U.S. government agencies.
Troubled Debt Restructurings

A summary of troubled debt restructurings ("TDRs") by accruing status as of June 30, 2013 were as follows (in thousands):

 
 
As of June 30, 2013
 
Amounts Charged Off During
 
 
Recorded
Investment
 
Performing in Accordance With Modified Terms
 
Not
Performing in Accordance With Modified Terms
 
Specific
Allowance
 
Three Months Ended June 30, 2013
 
Six Months Ended
June 30, 2013
Nonaccruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
Energy
 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
 
3,065

 
710

 
2,355

 
228

 
—

 
—

Wholesale/retail
 
1,107

 
968

 
139

 
12

 
—

 
—

Manufacturing
 
—

 
—

 
—

 
—

 
—

 
—

Healthcare
 
—

 
—

 
—

 
—

 
—

 
—

Integrated food services
 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
 
821

 
189

 
632

 
—

 
—

 
—

Total commercial
 
4,993

 
1,867

 
3,126

 
240

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

 
 

Construction and land development
 
11,734

 
1,934

 
9,800

 
23

 
54

 
54

Retail
 
5,681

 
1,604

 
4,077

 
—

 
—

 
627

Office
 
5,488

 
1,313

 
4,175

 
—

 
77

 
77

Multifamily
 
990

 
208

 
782

 
—

 
—

 
—

Industrial
 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
 
8,746

 
3,739

 
5,007

 
—

 
—

 
—

Total commercial real estate
 
32,639

 
8,798

 
23,841

 
23

 
131

 
758

 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
17,639

 
10,917

 
6,722

 
54

 
8

 
348

Home equity
 
3,504

 
3,264

 
240

 
—

 
69

 
69

Total residential mortgage
 
21,143

 
14,181

 
6,962

 
54

 
77

 
417

 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
986

 
926

 
60

 
—

 
—

 
1

Other consumer
 
556

 
398

 
158

 
78

 
—

 
—

Total consumer
 
1,542

 
1,324

 
218

 
78

 
—

 
1

 
 
 
 
 
 
 
 
 
 
 
 
 
Total nonaccruing TDRs
 
$
60,317

 
$
26,170

 
$
34,147

 
$
395

 
$
208

 
$
1,176

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
As of June 30, 2013
 
Amounts Charged Off During
 
 
Recorded
Investment
 
Performing in Accordance With Modified Terms
 
Not
Performing in Accordance With Modified Terms
 
Specific
Allowance
 
Three Months Ended June 30, 2013
 
Six Months Ended
June 30, 2013
Accruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
 
—

 
—

 
—

 
—

 
—

 
—

Permanent mortgages guaranteed by U.S. government agencies
 
48,733

 
12,598

 
36,135

 
—

 
—

 
—

Total residential mortgage
 
48,733

 
12,598

 
36,135

 
—

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
Total accruing TDRs
 
48,733

 
12,598

 
36,135

 
—

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
Total TDRs
 
$
109,050

 
$
38,768

 
$
70,282

 
$
395

 
$
208

 
$
1,176


A summary of troubled debt restructurings by accruing status as of December 31, 2012 were as follows (in thousands):

 
 
As of
 
 
December 31, 2012
 
 
Recorded
Investment
 
Performing in Accordance With Modified Terms
 
Not
Performing in Accordance With Modified Terms
 
Specific
Allowance
Nonaccruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial:
 
 
 
 
 
 
 
 
Energy
 
$
—

 
$
—

 
$
—

 
$
—

Services
 
2,492

 
2,099

 
393

 
45

Wholesale/retail
 
2,290

 
1,362

 
928

 
15

Manufacturing
 
—

 
—

 
—

 
—

Healthcare
 
64

 
64

 
—

 
—

Integrated food services
 
—

 
—

 
—

 
—

Other commercial and industrial
 
675

 
—

 
675

 
—

Total commercial
 
5,521

 
3,525

 
1,996

 
60

 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

Construction and land development
 
14,898

 
9,989

 
4,909

 
76

Retail
 
6,785

 
5,735

 
1,050

 
—

Office
 
3,899

 
1,920

 
1,979

 
—

Multifamily
 
—

 
—

 
—

 
—

Industrial
 
—

 
—

 
—

 
—

Other real estate loans
 
5,017

 
3,399

 
1,618

 
—

Total commercial real estate
 
30,599

 
21,043

 
9,556

 
76

 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

Permanent mortgage
 
20,490

 
12,214

 
8,276

 
54

Home equity
 
—

 
—

 
—

 
—

Total residential mortgage
 
20,490

 
12,214

 
8,276

 
54

 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

Indirect automobile
 
532

 
492

 
40

 
—

Other consumer
 
2,328

 
2,097

 
231

 
83

Total consumer
 
2,860

 
2,589

 
271

 
83

 
 
 
 
 
 
 
 
 
Total nonaccuring TDRs
 
$
59,470

 
$
39,371

 
$
20,099

 
$
273

 
 
As of
 
 
December 31, 2012
 
 
Recorded
Investment
 
Performing in Accordance With Modified Terms
 
Not
Performing in Accordance With Modified Terms
 
Specific
Allowance
 
 
 
 
 
 
 
 
 
Accruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
Permanent mortgage
 
—

 
—

 
—

 
—

Permanent mortgages guaranteed by U.S. government agencies
 
38,515

 
8,755

 
29,760

 
—

Total residential mortgage
 
38,515

 
8,755

 
29,760

 
—

 
 
 
 
 
 
 
 
 
Total accruing TDRs
 
38,515

 
8,755

 
29,760

 
—

 
 
 
 
 
 
 
 
 
Total TDRs
 
$
97,985

 
$
48,126

 
$
49,859

 
$
273


A summary of troubled debt restructurings by accruing status as of June 30, 2012 were as follows (in thousands):
 
 
As of June 30, 2012
 
Amounts Charged Off During
 
 
Recorded
Investment
 
Performing in Accordance With Modified Terms
 
Not
Performing in Accordance With Modified Terms
 
Specific
Allowance
 
Three Months Ended
June 30, 2012
 
Six Months Ended
June 30, 2012
Nonaccruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
Energy
 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
 
2,700

 
1,381

 
1,319

 
—

 
—

 
—

Wholesale/retail
 
1,612

 
1,428

 
184

 
20

 
—

 
—

Manufacturing
 
—

 
—

 
—

 
—

 
—

 
—

Healthcare
 
77

 
77

 
—

 
—

 
—

 
—

Integrated food services
 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
 
779

 
—

 
779

 
—

 
—

 
—

Total commercial
 
5,168

 
2,886

 
2,282

 
20

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

 
 

Construction and land development
 
18,217

 
4,238

 
13,979

 
76

 
769

 
2,579

Retail
 
3,618

 
3,618

 
—

 
—

 
—

 
—

Office
 
3,387

 
2,489

 
898

 
—

 
—

 
269

Multifamily
 
—

 
—

 
—

 
—

 
—

 
—

Industrial
 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
 
5,730

 
1,933

 
3,797

 
103

 
—

 
2,182

Total commercial real estate
 
30,952

 
12,278

 
18,674

 
179

 
769

 
5,030

 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
6,892

 
4,327

 
2,565

 
54

 
115

 
115

Home equity
 
—

 
—

 
—

 
—

 
—

 
—

Total residential mortgage
 
6,892

 
4,327

 
2,565

 
54

 
115

 
115

 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
—

 
—

 
—

 
—

 
—

 
—

Other consumer
 
3,502

 
3,502

 
—

 
—

 
—

 
—

Total consumer
 
3,502

 
3,502

 
—

 
—

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
Total nonaccruing TDRs
 
$
46,514

 
$
22,993

 
$
23,521

 
$
253

 
$
884

 
$
5,145

 
 
As of June 30, 2012
 
Amounts Charged Off During
 
 
Recorded
Investment
 
Performing in Accordance With Modified Terms
 
Not
Performing in Accordance With Modified Terms
 
Specific
Allowance
 
Three Months Ended
June 30, 2012
 
Six Months Ended
June 30, 2012
Nonaccruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Accruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
 
3,655

 
2,466

 
1,189

 
—

 
32

 
112

Permanent mortgages guaranteed by U.S. government agencies
 
24,760

 
8,881

 
15,879

 
—

 
—

 
—

Total residential mortgage
 
28,415

 
11,347

 
17,068

 
—

 
32

 
112

 
 
 
 
 
 
 
 
 
 
 
 
 
Total accruing TDRs
 
28,415

 
11,347

 
17,068

 
—

 
32

 
112

 
 
 
 
 
 
 
 
 
 
 
 
 
Total TDRs
 
$
74,929

 
$
34,340

 
$
40,589

 
$
253

 
$
916

 
$
5,257

Troubled debt restructurings generally consist of interest rates concessions, payment stream concessions or a combination of concessions to distressed borrowers. The following tables detail the recorded balance of loans at June 30, 2013 by class that were restructured during the three and six months ended June 30, 2013 by primary type of concession (in thousands):

 
Three Months Ended
June 30, 2013
 
Accruing
 
Nonaccrual
 
Total
 
Payment Stream
 
Combination & Other
 
Total
 
Interest Rate
 
Payment Stream
 
Combination & Other
 
Total
 
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Energy
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
—

 
—

 
—

 
—

 
1,140

 
—

 
1,140

 
1,140

Wholesale/retail
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Manufacturing
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Healthcare
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total commercial
—

 
—

 
—

 
—

 
1,140

 
—

 
1,140

 
1,140

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
 

 

Construction and land development
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Retail
—

 
—

 
—

 
—

 
612

 
—

 
612

 
612

Office
—

 
—

 
—

 
—

 
3,181

 
—

 
3,181

 
3,181

Multifamily
—

 
—

 
—

 
—

 
990

 
—

 
990

 
990

Industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
—

 
—

 
—

 
—

 
3,931

 
—

 
3,931

 
3,931

Total commercial real estate
—

 
—

 
—

 
—

 
8,714

 
—

 
8,714

 
8,714

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
—

 
—

 
—

 
—

 
—

 
1,132

 
1,132

 
1,132

Permanent mortgage guaranteed by U.S. government agencies
3,087

 
5,809

 
8,896

 
—

 
—

 
—

 
—

 
8,896

Home equity
—

 
—

 
—

 
—

 
—

 
1,798

 
1,798

 
1,798

Total residential mortgage
3,087

 
5,809

 
8,896

 
—

 
—

 
2,930

 
2,930

 
11,826

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Indirect automobile
—

 
—

 
—

 
—

 
—

 
719

 
719

 
719

Other consumer
—

 
—

 
—

 
—

 
—

 
58

 
58

 
58

Total consumer
—

 
—

 
—

 
—

 
—

 
777

 
777

 
777

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total
$
3,087

 
$
5,809

 
$
8,896

 
$
—

 
$
9,854

 
$
3,707

 
$
13,561

 
$
22,457


 
Six Months Ended
June 30, 2013
 
Accruing
 
Nonaccrual
 
Total
 
Payment Stream
 
Combination & Other
 
Total
 
Interest Rate
 
Payment Stream
 
Combination & Other
 
Total
 
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Energy
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
—

 
—

 
—

 
—

 
1,173

 
—

 
1,173

 
1,173

Wholesale/retail
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Manufacturing
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Healthcare
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
—

 
—

 
—

 
147

 
—

 
—

 
147

 
147

Total commercial
—

 
—

 
—

 
147

 
1,173

 
—

 
1,320

 
1,320

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Construction and land development
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Retail
—

 
—

 
—

 
—

 
612

 
—

 
612

 
612

Office
—

 
—

 
—

 
—

 
3,181

 
—

 
3,181

 
3,181

Multifamily
—

 
—

 
—

 
—

 
990

 
—

 
990

 
990

Industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
—

 
—

 
—

 
—

 
3,931

 
—

 
3,931

 
3,931

Total commercial real estate
—

 
—

 
—

 
—

 
8,714

 
—

 
8,714

 
8,714

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
—

 
—

 
—

 
—

 
27

 
1,377

 
1,404

 
1,404

Permanent mortgage guaranteed by U.S. government agencies
8,694

 
8,949

 
17,643

 
—

 
—

 
—

 
—

 
17,643

Home equity
—

 
—

 
—

 
—

 
—

 
2,108

 
2,108

 
2,108

Total residential mortgage
8,694

 
8,949

 
17,643

 
—

 
27

 
3,485

 
3,512

 
21,155

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Indirect automobile
—

 
—

 
—

 
—

 
—

 
725

 
725

 
725

Other consumer
—

 
—

 
—

 
87

 
—

 
98

 
185

 
185

Total consumer
—

 
—

 
—

 
87

 
—

 
823

 
910

 
910

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total
$
8,694

 
$
8,949

 
$
17,643

 
$
234

 
$
9,914

 
$
4,308

 
$
14,456

 
$
32,099


Troubled debt restructurings generally consist of interest rates concessions, payment stream concessions or a combination of concessions to distressed borrowers. The following tables detail the recorded balance of loans by class that were restructured during the three and six months ended June 30, 2012 by primary type of concession (in thousands):

 
Three Months Ended
June 30, 2012
 
Accruing
 
Nonaccrual
 
Total
 
Payment Stream
 
Combination & Other
 
Total
 
Interest Rate
 
Payment Stream
 
Combination & Other
 
Total
 
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Energy
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
—

 
—

 
—

 
72

 
—

 
—

 
72

 
72

Wholesale/retail
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Manufacturing
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Healthcare
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total commercial
—

 
—

 
—

 
72

 
—

 
—

 
72

 
72

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Construction and land development
—

 
—

 
—

 
1,203

 
—

 
—

 
1,203

 
1,203

Retail
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Office
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Multifamily
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total commercial real estate
—

 
—

 
—

 
1,203

 
—

 
—

 
1,203

 
1,203

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
—

 
—

 
—

 
—

 
—

 
23

 
23

 
23

Permanent mortgage guaranteed by U.S. government agencies
—

 
1,350

 
1,350

 
—

 
—

 
—

 
—

 
1,350

Home equity
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total residential mortgage
—

 
1,350

 
1,350

 
—

 
—

 
23

 
23

 
1,373

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Indirect automobile
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other consumer
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total consumer
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total
$
—

 
$
1,350

 
$
1,350

 
$
1,275

 
$
—

 
$
23

 
$
1,298

 
$
2,648


 
Six Months Ended
June 30, 2012
 
Accruing
 
Nonaccrual
 
Total
 
Payment Stream
 
Combination & Other
 
Total
 
Interest Rate
 
Payment Stream
 
Combination & Other
 
Total
 
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Energy
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
—

 
—

 
—

 
72

 
—

 
—

 
72

 
72

Wholesale/retail
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Manufacturing
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Healthcare
—

 
—

 
—

 
—

 
—

 
77

 
77

 
77

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total commercial
—

 
—

 
—

 
72

 
—

 
77

 
149

 
149

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Construction and land development
—

 
—

 
—

 
1,302

 
—

 
—

 
1,302

 
1,302

Retail
—

 
—

 
—

 
2,418

 
—

 
—

 
2,418

 
2,418

Office
—

 
—

 
—

 
1,387

 
—

 
—

 
1,387

 
1,387

Multifamily
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
—

 
—

 
—

 
—

 
1,636

 
—

 
1,636

 
1,636

Total commercial real estate
—

 
—

 
—

 
5,107

 
1,636

 
—

 
6,743

 
6,743

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
—

 
4,136

 
4,136

 
—

 
—

 
810

 
810

 
4,946

Permanent mortgage guaranteed by U.S. government agencies
—

 
151

 
151

 
—

 
—

 
—

 
—

 
151

Home equity
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total residential mortgage
—

 
4,287

 
4,287

 
—

 
—

 
810

 
810

 
5,097

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Indirect automobile
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other consumer
—

 
—

 
—

 
373

 
—

 
2,995

 
3,368

 
3,368

Total consumer
—

 
—

 
—

 
373

 
—

 
2,995

 
3,368

 
3,368

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total
$
—

 
$
4,287

 
$
4,287

 
$
5,552

 
$
1,636

 
$
3,882

 
$
11,070

 
$
15,357


The following table summarizes, by loan class, the recorded investment at June 30, 2013 of loans modified as TDRs within the previous 12 months and for which there was a payment default during the three and six months ended June 30, 2013 (in thousands):

 
Three Months Ended
June 30, 2013
 
Six Months Ended
June 30, 2013
 
Accruing
 
Nonaccrual
 
Total
 
Accruing
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
 
Energy
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
—

 
2,007

 
2,007

 
—

 
2,007

 
2,007

Wholesale/retail
—

 
—

 
—

 
—

 
—

 
—

Manufacturing
—

 
—

 
—

 
—

 
—

 
—

Healthcare
—

 
—

 
—

 
—

 
—

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
—

 
—

 
—

 
—

 
33

 
33

Total commercial
—

 
2,007

 
2,007

 
—

 
2,040

 
2,040

 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
Construction and land development
—

 
6,889

 
6,889

 
—

 
6,889

 
6,889

Retail
—

 
612

 
612

 
—

 
612

 
612

Office
—

 
3,181

 
3,181

 
—

 
3,181

 
3,181

Multifamily
—

 
782

 
782

 
—

 
990

 
990

Industrial
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
—

 
3,398

 
3,398

 
—

 
3,931

 
3,931

Total commercial real estate
—

 
14,862

 
14,862

 
—

 
15,603

 
15,603

 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
—

 
1,949

 
1,949

 
—

 
1,969

 
1,969

Permanent mortgage guaranteed by U.S. government agencies
22,784

 
—

 
22,784

 
26,767

 
—

 
26,767

Home equity
—

 
240

 
240

 
—

 
371

 
371

Total residential mortgage
22,784

 
2,189

 
24,973

 
26,767

 
2,340

 
29,107

 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
Indirect automobile
—

 
61

 
61

 
—

 
98

 
98

Other consumer
—

 
24

 
24

 
—

 
24

 
24

Total consumer
—

 
85

 
85

 
—

 
122

 
122

 
 
 
 
 
 
 
 
 
 
 
 
Total
$
22,784

 
$
19,143

 
$
41,927

 
$
26,767

 
$
20,105

 
$
46,872


A payment default is defined as being 30 days or more past due. The table above includes loans that experienced a payment default during the period, but may be performing in accordance with the modified terms as of the balance sheet date.

The following table summarizes, by loan class, the recorded investment at June 30, 2012 of loans modified as TDRs within the previous 12 months and for which there was a payment default during the three and six months ended June 30, 2012 (in thousands):
 
Three Months Ended
June 30, 2012
 
Six Months Ended
June 30, 2012
 
Accruing
 
Nonaccrual
 
Total
 
Accruing
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
 
Energy
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
—

 
—

 
—

 
—

 
—

 
—

Wholesale/retail
—

 
—

 
—

 
—

 
—

 
—

Manufacturing
—

 
—

 
—

 
—

 
—

 
—

Healthcare
—

 
—

 
—

 
—

 
—

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
—

 
—

 
—

 
—

 
—

 
—

Total commercial
—

 
—

 
—

 
—

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
Construction and land development
—

 
1,203

 
1,203

 
—

 
1,203

 
1,203

Retail
—

 
—

 
—

 
—

 
2,418

 
2,418

Office
—

 
—

 
—

 
—

 
1,387

 
1,387

Multifamily
—

 
—

 
—

 
—

 
—

 
—

Industrial
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
—

 
—

 
—

 
—

 
—

 
—

Total commercial real estate
—

 
1,203

 
1,203

 
—

 
5,008

 
5,008

 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
—

 
23

 
23

 
—

 
23

 
23

Permanent mortgage guaranteed by U.S. government agencies
492

 
—

 
492

 
2,096

 
—

 
2,096

Home equity
—

 
—

 
—

 
—

 
—

 
—

Total residential mortgage
492

 
23

 
515

 
2,096

 
23

 
2,119

 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
Indirect automobile
—

 
—

 
—

 
—

 
—

 
—

Other consumer
—

 
—

 
—

 
—

 
—

 
—

Total consumer
—

 
—

 
—

 
—

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
Total
$
492

 
$
1,226

 
$
1,718

 
$
2,096

 
$
5,031

 
$
7,127


Nonaccrual & Past Due Loans

Past due status for all loan classes is based on the actual number of days since the last payment was due according to the contractual terms of the loans.

A summary of loans currently performing, loans past due and accruing and nonaccrual loans as of June 30, 2013 is as follows (in thousands):
 
 
 
 
Past Due
 
 
 
 
 
 
Current
 
30 to 89
Days
 
90 Days
or More
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,382,377

 
$
92

 
$
—

 
$
2,277

 
$
2,384,746

Services
 
2,192,771

 
1,769

 
2,265

 
7,448

 
2,204,253

Wholesale/retail
 
1,168,686

 
—

 
157

 
6,700

 
1,175,543

Manufacturing
 
385,257

 
—

 
—

 
876

 
386,133

Healthcare
 
1,115,187

 
953

 
—

 
2,670

 
1,118,810

Integrated food services
 
163,551

 
—

 
—

 
—

 
163,551

Other commercial and industrial
 
274,007

 
160

 
19

 
898

 
275,084

Total commercial
 
7,681,836

 
2,974

 
2,441

 
20,869

 
7,708,120

 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

Construction and land development
 
204,519

 
—

 
—

 
21,135

 
225,654

Retail
 
542,946

 
2,060

 
—

 
8,406

 
553,412

Office
 
451,730

 
—

 
—

 
7,828

 
459,558

Multifamily
 
492,306

 
1,699

 
—

 
6,447

 
500,452

Industrial
 
253,990

 
—

 
—

 
—

 
253,990

Other real estate loans
 
308,373

 
780

 
—

 
14,877

 
324,030

Total commercial real estate
 
2,253,864

 
4,539

 
—

 
58,693

 
2,317,096

 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
1,054,435

 
8,689

 
—

 
32,747

 
1,095,871

Permanent mortgages guaranteed by U.S. government agencies
 
22,328

 
17,670

 
116,806

 
83

 
156,887

Home equity
 
776,872

 
2,451

 
—

 
7,704

 
787,027

Total residential mortgage
 
1,853,635

 
28,810

 
116,806

 
40,534

 
2,039,785

 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
14,827

 
540

 
—

 
1,188

 
16,555

Other consumer
 
356,416

 
1,942

 
19

 
849

 
359,226

Total consumer
 
371,243

 
2,482

 
19

 
2,037

 
375,781

 
 
 
 
 
 
 
 
 
 
 
Total
 
$
12,160,578

 
$
38,805

 
$
119,266

 
$
122,133

 
$
12,440,782


A summary of loans currently performing, loans past due and accruing and nonaccrual loans as of December 31, 2012 is as follows (in thousands):

 
 
 
 
Past Due
 
 
 
 
 
 
Current
 
30 to 89
Days
 
90 Days
or More
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,454,928

 
$
3,071

 
$
200

 
$
2,460

 
$
2,460,659

Services
 
2,150,386

 
1,710

 
—

 
12,090

 
2,164,186

Wholesale/retail
 
1,103,307

 
5

 
50

 
3,077

 
1,106,439

Manufacturing
 
346,442

 
35

 
—

 
2,007

 
348,484

Healthcare
 
1,077,022

 
1,040

 
178

 
3,166

 
1,081,406

Integrated food services
 
190,416

 
6

 
—

 
684

 
191,106

Other commercial and industrial
 
288,522

 
127

 
—

 
983

 
289,632

Total commercial
 
7,611,023

 
5,994

 
428

 
24,467

 
7,641,912

 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

Construction and land development
 
226,962

 
—

 
—

 
26,131

 
253,093

Retail
 
514,252

 
349

 
68

 
8,117

 
522,786

Office
 
417,866

 
3,177

 
—

 
6,829

 
427,872

Multifamily
 
400,151

 
39

 
—

 
2,706

 
402,896

Industrial
 
242,026

 
—

 
—

 
3,968

 
245,994

Other real estate loans
 
358,030

 
2,092

 
3,361

 
12,875

 
376,358

Total commercial real estate
 
2,159,287

 
5,657

 
3,429

 
60,626

 
2,228,999

 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
1,075,687

 
8,366

 
49

 
39,863

 
1,123,965

Permanent mortgages guaranteed by U.S. government agencies
 
26,560

 
13,046

 
120,349

 
489

 
160,444

Home equity
 
752,100

 
2,275

 
—

 
6,256

 
760,631

Total residential mortgage
 
1,854,347

 
23,687

 
120,398

 
46,608

 
2,045,040

 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
31,869

 
1,273

 
15

 
1,578

 
34,735

Other consumer
 
358,308

 
1,327

 
4

 
1,131

 
360,770

Total consumer
 
390,177

 
2,600

 
19

 
2,709

 
395,505

 
 
 
 
 
 
 
 
 
 
 
Total
 
$
12,014,834

 
$
37,938

 
$
124,274

 
$
134,410

 
$
12,311,456

A summary of loans currently performing, loans past due and accruing and nonaccrual loans as of June 30, 2012 is as follows (in thousands):

 
 
 
 
Past Due
 
 
 
 
 
 
Current
 
30 to 89
Days
 
90 Days
or More
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,263,505

 
$
2,260

 
$
—

 
$
3,087

 
$
2,268,852

Services
 
1,974,465

 
3,705

 
37

 
10,123

 
1,988,330

Wholesale/retail
 
940,975

 
1,534

 
—

 
4,175

 
946,684

Manufacturing
 
334,856

 
—

 
—

 
12,230

 
347,086

Healthcare
 
980,750

 
180

 
100

 
3,310

 
984,340

Integrated food services
 
201,366

 
4,903

 
—

 
—

 
206,269

Other commercial and industrial
 
291,781

 
589

 
—

 
1,604

 
293,974

Total commercial
 
6,987,698

 
13,171

 
137

 
34,529

 
7,035,535

 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

Construction and land development
 
245,246

 
801

 
—

 
46,050

 
292,097

Retail
 
492,612

 
5,626

 
—

 
7,908

 
506,146

Office
 
384,225

 
525

 
—

 
10,589

 
395,339

Multifamily
 
354,455

 
742

 
—

 
3,219

 
358,416

Industrial
 
228,333

 
392

 
—

 
—

 
228,725

Other real estate loans
 
353,231

 
3,328

 
—

 
12,448

 
369,007

Total commercial real estate
 
2,058,102

 
11,414

 
—

 
80,214

 
2,149,730

 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
1,111,078

 
15,130

 
495

 
18,136

 
1,144,839

Permanent mortgages guaranteed by U.S. government agencies
 
20,641

 
14,473

 
127,126

 
—

 
162,240

Home equity
 
688,960

 
2,211

 
44

 
4,591

 
695,806

Total residential mortgage
 
1,820,679

 
31,814

 
127,665

 
22,727

 
2,002,885

 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
58,909

 
1,771

 
1

 
2,257

 
62,938

Other consumer
 
319,856

 
718

 
14

 
4,755

 
325,343

Total consumer
 
378,765

 
2,489

 
15

 
7,012

 
388,281

 
 
 
 
 
 
 
 
 
 
 
Total
 
$
11,245,244

 
$
58,888

 
$
127,817

 
$
144,482

 
$
11,576,431

Mortgage Banking Activities
Mortgage Banking Activities [Text Block]
Mortgage Banking Activities

Residential Mortgage Loan Production

The Company originates, markets and services conventional and government-sponsored residential mortgage loans. Generally, conforming fixed rate residential mortgage loans are held for sale in the secondary market and non-conforming and adjustable-rate residential mortgage loans are held for investment. All residential mortgage loans originated for sale by the Company are carried at fair value based on sales commitments and market quotes. Changes in the fair value of mortgage loans held for sale are included in Other operating revenue – Mortgage banking revenue. Residential mortgage loans held for sale also includes the fair value of residential mortgage loan commitments and forward sale commitments which are considered derivative contracts that have not been designated as hedging instruments. The volume of mortgage loans originated for sale and secondary market prices are the primary drivers of originating and marketing revenue.

Residential mortgage loan commitments are generally outstanding for 60 to 90 days, which represents the typical period from commitment to originate a residential mortgage loan to when the closed loan is sold to an investor. Residential mortgage loan commitments are subject to both credit and interest rate risk. Credit risk is managed through underwriting policies and procedures, including collateral requirements, which are generally accepted by the secondary loan markets. Exposure to interest rate fluctuations is partially managed through forward sales of residential mortgage-backed securities and forward sales contracts. These latter contracts set the price for loans that will be delivered in the next 60 to 90 days.

The unpaid principal balance of residential mortgage loans held for sale, notional amounts of derivative contracts related to residential mortgage loans commitments and forward contract sales and their related fair values included in Mortgage loans held for sale on the Consolidated Balance Sheets were (in thousands):
 
 
June 30, 2013
 
December 31, 2012
 
June 30, 2012
 
 
Unpaid Principal Balance/
Notional
 
Fair Value
 
Unpaid Principal Balance/
Notional
 
Fair Value
 
Unpaid
Principal
 Balance/
Notional
 
Fair Value
Residential mortgage loans held for sale
 
$
284,454

 
$
280,962

 
$
269,718

 
$
281,935

 
$
236,160

 
$
247,893

Residential mortgage loan commitments
 
547,508

 
(1,709
)
 
356,634

 
12,733

 
392,247

 
15,807

Forward sales contracts
 
740,752

 
21,804

 
598,442

 
(906
)
 
605,856

 
(4,526
)
 
 
 

 
$
301,057

 
 

 
$
293,762

 
 

 
$
259,174



No residential mortgage loans held for sale were 90 days or more past due or considered impaired as of June 30, 2013, December 31, 2012 or June 30, 2012. No credit losses were recognized on residential mortgage loans held for sale for the six month periods ended June 30, 2013 and 2012.

Mortgage banking revenue was as follows (in thousands):
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30, 2013
 
June 30, 2012
 
June 30, 2013
 
June 30, 2012
Originating and marketing revenue:
 
 
 
 
 
 
 
 
Residential mortgages loan held for sale
 
$
17,763

 
$
27,706

 
$
47,998

 
$
44,798

Residential mortgage loan commitments
 
(15,052
)
 
6,900

 
(14,442
)
 
9,210

Forward sales contracts
 
23,645

 
(4,917
)
 
22,710

 
(1,238
)
Total originating and marketing revenue
 
26,356

 
29,689

 
56,266

 
52,770

Servicing revenue
 
10,240

 
9,859

 
20,306

 
19,856

Total mortgage banking revenue
 
$
36,596

 
$
39,548

 
$
76,572

 
$
72,626



Originating and marketing revenue includes gain (loss) on residential mortgage loans held for sale and changes in the fair value of derivative contracts not designated as hedging instruments related to residential mortgage loan commitments and forward sales contracts. Servicing revenue includes servicing fee income and late charges on loans serviced for others.

Residential Mortgage Servicing

Mortgage servicing rights may be recognized when mortgage loans are originated pursuant to an existing plan for sale or, if no such plan exists, when the mortgage loans are sold. Mortgage servicing rights may also be purchased. Both originated or purchased mortgage servicing rights are initially recognized at fair value. The Company has elected to carry all mortgage servicing rights at fair value. Changes in the fair value are recognized in earnings as they occur. The unpaid principal balance of loans serviced for others is the primary driver of servicing revenue.

The following represents a summary of mortgage servicing rights (Dollars in thousands):
 
 
June 30, 2013
 
December 31, 2012
 
June 30, 2012
Number of residential mortgage loans serviced for others
 
101,498

 
98,246

 
96,772

Outstanding principal balance of residential mortgage loans serviced for others
 
$
12,741,651

 
$
11,981,624

 
$
11,564,643

Weighted average interest rate
 
4.47
%
 
4.71
%
 
4.99
%
Remaining term (in months)
 
291

 
289

 
289



Activity in capitalized mortgage servicing rights during the three months ended June 30, 2013 was as follows (in thousands):
 
 
Purchased
 
Originated
 
Total
Balance, Mar. 31, 2013
 
$
13,203

 
$
96,637

 
$
109,840

Additions, net
 
—

 
14,499

 
14,499

Change in fair value due to loan runoff
 
(940
)
 
(4,825
)
 
(5,765
)
Change in fair value due to market changes
 
3,319

 
10,996

 
14,315

Balance, June 30, 2013
 
$
15,582

 
$
117,307

 
$
132,889


Activity in capitalized mortgage servicing rights during the six months ended June 30, 2013 was as follows (in thousands):
 
 
Purchased
 
Originated
 
Total
Balance, December 31, 2012
 
$
12,976

 
$
87,836

 
$
100,812

Additions, net
 
—

 
25,932

 
25,932

Change in fair value due to loan runoff
 
(1,811
)
 
(9,017
)
 
(10,828
)
Change in fair value due to market changes
 
4,417

 
12,556

 
16,973

Balance, June 30, 2013
 
$
15,582

 
$
117,307

 
$
132,889


Activity in capitalized mortgage servicing rights during the three months ended June 30, 2012 was as follows (in thousands):
 
 
Purchased
 
Originated
 
Total
Balance, Mar. 31, 2012
 
$
21,204

 
$
76,934

 
$
98,138

Additions, net
 
—

 
9,275

 
9,275

Change in fair value due to loan runoff
 
(950
)
 
(3,230
)
 
(4,180
)
Change in fair value due to market changes
 
(3,893
)
 
(7,557
)
 
(11,450
)
Balance, June 30, 2012
 
$
16,361

 
$
75,422

 
$
91,783


Activity in capitalized mortgage servicing rights during the six months ended June 30, 2012 was as follows (in thousands):
 
 
Purchased
 
Originated
 
Total
Balance, December 31, 2011
 
$
18,903

 
$
67,880

 
$
86,783

Additions, net
 
—

 
17,647

 
17,647

Change in fair value due to loan runoff
 
(1,960
)
 
(6,364
)
 
(8,324
)
Change in fair value due to market changes
 
(582
)
 
(3,741
)
 
(4,323
)
Balance, June 30, 2012
 
$
16,361

 
$
75,422

 
$
91,783


 
Changes in the fair value of mortgage servicing rights are included in Other operating expense in the Consolidated Statements of Earnings. Changes in fair value due to loan runoff are included in Mortgage banking costs. Changes in fair value due to market changes are reported separately. Changes in fair value due to market changes during the period relate to assets held at the reporting date.

There is no active market for trading in mortgage servicing rights after origination. Fair value is determined by discounting the projected net cash flows. Significant assumptions used to determine fair value based on significant unobservable input were as follows:

 
 
June 30, 2013
 
December 31, 2012
 
June 30, 2012
Discount rate – risk-free rate plus a market premium
 
10.25%
 
10.29%
 
10.33%
Prepayment rate – based upon loan interest rate, original term and loan type
 
7.00% - 32.30%
 
8.38% - 43.94%
 
11.44% - 53.10%
Loan servicing costs – annually per loan based upon loan type:
 
 
 
 
 
 
    Performing loans
 
$58 - $105
 
$55 - $105
 
$55 - $105
    Delinquent loans
 
$135 - $500
 
$135 - $500
 
$135 - $500
    Loans in foreclosure
 
$875 - $4,250
 
$875 - $4,250
 
$875 - $3,750
Escrow earnings rate – indexed to rates paid on deposit accounts with comparable average life
 
1.56%
 
0.87%
 
1.28%


The Company is exposed to interest rate risk as benchmark residential mortgage interest rates directly affect the prepayment speeds used in valuing our mortgage servicing rights, which is partially managed through forward sales of residential mortgage-backed securities and forward sales contracts. A separate third party model is used to estimate prepayment speeds based on interest rates, housing turnover rates, estimated loan curtailment, anticipated defaults and other relevant factors. The prepayment model is updated daily for changes in market conditions and adjusted to better correlate with actual performance of BOK Financial’s servicing portfolio.

Stratification of the residential mortgage loan servicing portfolio and outstanding principal of loans serviced for others by interest rate at June 30, 2013 follows (in thousands):
 
 
< 4.00%
 
4.00% - 4.99%

 
5.00% - 5.99%

 
> 5.99%
 
Total
Fair value
 
$
57,807

 
$
41,673

 
$
26,815

 
$
6,594

 
$
132,889

Outstanding principal of loans serviced for others
 
$
5,075,651

 
$
3,739,420

 
$
2,551,306

 
$
1,375,274

 
$
12,741,651

Weighted average prepayment rate1
 
7.00
%
 
8.51
%
 
12.70
%
 
32.30
%
 
11.31
%
1 
Annual prepayment estimates based upon loan interest rate, original term and loan type. Weighted average prepayment rate is determined by weighting the prepayment speed for each loan by its unpaid principal balance.

The interest rate sensitivity of our mortgage servicing rights and securities and derivative contracts held as an economic hedge is modeled over a range of +/- 50 basis points. At June 30, 2013, a 50 basis point increase in mortgage interest rates is expected to increase the fair value of our mortgage servicing rights, net of economic hedge by $207 thousand. A 50 basis point decrease in mortgage interest rates is expected to decrease the fair value of our mortgage servicing rights, net of economic hedge by $586 thousand. In the model, changes in the value of servicing rights due to changes in interest rates assume stable relationships between residential mortgage rates and prepayment speeds. Changes in market conditions can cause variations from these assumptions. These factors and others may cause changes in the value of our mortgage servicing rights to differ from our expectations.

The aging status of our mortgage loans serviced for others by investor at June 30, 2013 follows (in thousands):
 
 
 
 
Past Due
 
 
 
 
Current
 
30 to 59
Days
 
60 to 89
Days
 
90 Days or More
 
Total
FHLMC
 
$
4,496,062

 
$
41,399

 
$
9,992

 
$
36,381

 
$
4,583,834

FNMA
 
3,409,245

 
24,891

 
5,136

 
16,941

 
3,456,213

GNMA
 
4,245,789

 
143,568

 
31,781

 
13,973

 
4,435,111

Other
 
258,397

 
2,103

 
620

 
5,373

 
266,493

Total
 
$
12,409,493

 
$
211,961

 
$
47,529

 
$
72,668

 
$
12,741,651


The Company has off-balance sheet credit risk related to residential mortgage loans sold to U.S. government agencies with recourse prior to 2008 under various community development programs. These loans consist of first lien, fixed-rate residential mortgage loans underwritten to standards approved by the agencies including full documentation and originated under programs available only for owner-occupied properties. However, these loans have a higher risk of delinquency and loss given default than traditional residential mortgage loans. The Company no longer sells residential mortgage loans with recourse other than obligations under standard representations and warranties. The recourse obligation relates to loan performance for the life of the loan and the Company is obligated to repurchase the loan at the time of foreclosure for the unpaid principal balance plus unpaid interest. The principal balance of residential mortgage loans sold subject to recourse obligations totaled $212 million at June 30, 2013, $227 million at December 31, 2012 and $241 million at June 30, 2012. A separate accrual for these off-balance sheet commitments is included in Other liabilities in the Consolidated Balance Sheets totaling $10 million at June 30, 2013, $11 million at December 31, 2012 and $18 million at June 30, 2012. At June 30, 2013, approximately 6% of the loans sold with recourse with an outstanding principal balance of $12 million were either delinquent more than 90 days, in bankruptcy or in foreclosure and 6% with an outstanding balance of $13 million were past due 30 to 89 days. The provision for credit losses on loans sold with recourse is included in Mortgage banking costs in the Consolidated Statements of Earnings.

The activity in the allowance for losses on loans sold with recourse included in Other liabilities in the Consolidated Balance Sheets is summarized as follows (in thousands):
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2013
 
2012
 
2013
 
2012
Beginning balance
 
$
10,075

 
$
18,651

 
$
11,359

 
$
18,683

Provision for recourse losses
 
430

 
768

 
(331
)
 
2,440

Loans charged off, net
 
(840
)
 
(1,587
)
 
(1,363
)
 
(3,291
)
Ending balance
 
$
9,665

 
$
17,832

 
$
9,665

 
$
17,832



The Company also has an off-balance sheet obligation to repurchase or provide indemnification for residential mortgage loans sold to government sponsored entities due to standard representations and warranties made under contractual agreements.The Company has established an accrual for credit losses related to potential loan repurchases under representations and warranties that is included in Other liabilities in the Consolidated Balance Sheets and in Mortgage banking costs in the Consolidated Statements of Earnings. The level of repurchases and indemnifications related to standard representations and warranties has remained low. The Company repurchased 4 loans from the agencies for $575 thousand during the second quarter of 2013 and recognized $68 thousand of related losses. There were no indemnification on loans paid during second quarter of 2013. 

A summary of unresolved deficiency requests from the agencies and related accrual for credit losses follows (in thousands):
 
June 30, 2013
 
December 31, 2012
Number of unresolved deficiency requests
464

 
389

Aggregate outstanding principal balance subject to unresolved deficiency requests
$
55,517

 
$
44,831

Unpaid principal balance subject to indemnification by the Company
1,774

 
1,233

Accrual for credit losses related to potential loan repurchases under representations and warranties
6,181

 
5,291

Employee Benefits
Employee Benefits [Text Block]
(6) Employee Benefits

BOK Financial has sponsored a defined benefit Pension Plan for all employees who satisfied certain age and service requirements.  Pension Plan benefits were curtailed as of April 1, 2006. The Company recognized periodic pension expense of $500 thousand and $965 thousand for the three months ended June 30, 2013 and 2012, respectively and $1.0 million and $1.9 million for the six months ended June 30, 2013 and 2012, respectively. The Company made no Pension Plan contributions during the three and six months ended June 30, 2013 and 2012.

Management has been advised that the maximum allowable contribution for 2013 is $23 million. No minimum contribution is required for 2013.
Commitments and Contingent Liabilities
Commitments and Contingent Liabilities

Litigation Contingencies

As a member of Visa, BOK Financial is obligated for a proportionate share of certain covered litigation losses incurred by Visa under a retrospective responsibility plan. A contingent liability was recognized for the Company’s share of Visa’s covered litigation liabilities. Visa funded an escrow account to cover litigation claims, including covered litigation losses under the retrospective responsibility plan, with proceeds from its initial public offering in 2008 and from available cash. 

BOK Financial currently owns 251,837 Visa Class B shares which are convertible into Visa Class A shares after the final settlement of all covered litigation. Class B shares may be diluted in the future if the escrow fund is not adequate to cover future covered litigation costs. Therefore, no value has been currently assigned to the Class B shares and no value may be assigned until the Class B shares are converted into a known number of Class A shares.

In July 2012, Visa announced it had reached an agreement in principle to resolve pending litigation and provide for settlement payments from the previously funded litigation escrow account. In conjunction with this agreement, Visa deposited an additional $150 million to the litigation escrow account which reduced the exchange rate to approximately 0.4206 Class A shares for each Class B share.

In the ordinary course of business, BOK Financial and its subsidiaries are subject to legal actions and complaints. Management believes, based upon the opinion of counsel, that the actions and liability or loss, if any, resulting from the final outcomes of the proceedings, will not have a material effect on the Company’s financial condition, results of operations or cash flows.

Alternative Investment Commitments

The Company sponsors two private equity funds and invests in several tax credit entities and other funds as permitted by banking regulations. Consolidation of these investments is based on the variable interest model determined by the nature of the entity. Variable interest entities are generally defined as entities that either do not have sufficient equity to finance their activities without support from other parties or whose equity investors lack a controlling financial interest. Variable interest entities are consolidated based on the determination that the Company is the primary beneficiary including the power to direct the activities that most significantly impact the variable interest's economic performance and the obligation to absorb losses of the variable interest or the right to receive benefits of the variable interest that could be significant to the variable interest.

BOKF Equity, LLC, an indirect wholly-owned subsidiary, is the general partner of two consolidated private equity funds (“the Funds”). The Funds provide alternative investment opportunities to certain customers, some of which are related parties, through unaffiliated limited partnerships. These unaffiliated limited partnerships generally invest in distressed assets, asset buy-outs or venture capital companies. As general partner, BOKF Equity, LLC has the power to direct activities that most significantly affect the Funds' performance and contingent obligations to make additional investments totaling $7.0 million at June 30, 2013. Substantially all of the obligations are offset by limited partner commitments. The Company does not accrue its contingent liability to fund investments. The Volcker Rule in Title VI of the Dodd-Frank Act limits both the amount and structure of these types of investments. As a result, the Company's private equity activity might be curtailed.

Consolidated tax credit investment entities represent the Company's interest in entities earning federal new market tax credits related to qualifying loans. The Company has the power to direct the activities that most significantly impact the variable interest's economic performance of the entity including being the primary beneficiary of or the obligation to absorb losses of the variable interest that could be significant to the variable interest.

The Company also has interests in various unrelated alternative investments generally consisting of unconsolidated limited partnership interests in or loans to entities for which investment return is primarily in the form of tax credits or that invest in distressed real estate loans and properties, energy development, venture capital and other activities. The Company is prohibited by banking regulations from controlling or actively managing the activities of these investments and the Company's maximum exposure to loss is restricted to its investment balance. The Company's obligation to fund alternative investments is included in Other liabilities in the Consolidated Balance Sheets.

A summary of consolidated and unconsolidated alternative investments as of June 30, 2013, December 31, 2012 and June 30, 2012 is as follows (in thousands):

 
 
June 30, 2013
 
 
Loans
 
Other
assets
 
Other
liabilities
 
Other
borrowings
 
Non-controlling
interest
Consolidated:
 
 
 
 
 
 
 
 
 
 
Private equity funds
 
$
—

 
$
28,379

 
$
—

 
$
—

 
$
23,418

Tax credit entities
 
10,000

 
13,706

 
—

 
10,964

 
10,000

Other
 
—

 
8,483

 
—

 
—

 
1,827

Total consolidated
 
$
10,000

 
$
50,568

 
$
—

 
$
10,964

 
$
35,245

 
 
 
 
 
 
 
 
 
 
 
Unconsolidated:
 
 
 
 
 
 
 
 
 
 
Tax credit entities
 
$
26,851

 
$
86,327

 
$
37,864

 
$
—

 
$
—

Other
 
—

 
9,371

 
1,775

 
—

 
—

Total unconsolidated
 
$
26,851

 
$
95,698

 
$
39,639

 
$
—

 
$
—


 
 
December 31, 2012
 
 
Loans
 
Other
assets
 
Other
liabilities
 
Other
borrowings
 
Non-controlling
interest
Consolidated:
 
 
 
 
 
 
 
 
 
 
Private equity funds
 
$
—

 
$
28,169

 
$
—

 
$
—

 
$
23,691

Tax credit entities
 
10,000

 
13,965

 
—

 
10,964

 
10,000

Other
 
—

 
8,952

 
—

 
—

 
2,130

Total consolidated
 
$
10,000

 
$
51,086

 
$
—

 
$
10,964

 
$
35,821

 
 
 
 
 
 
 
 
 
 
 
Unconsolidated:
 
 
 
 
 
 
 
 
 
 
Tax credit entities
 
$
22,354

 
$
78,109

 
$
43,052

 
$
—

 
$
—

Other
 
—

 
9,113

 
1,802

 
—

 
—

Total unconsolidated
 
$
22,354

 
$
87,222

 
$
44,854

 
$
—

 
$
—


 
 
June 30, 2012
 
 
Loans
 
Other
assets
 
Other
liabilities
 
Other
borrowings
 
Non-controlling
interest
Consolidated:
 
 
 
 
 
 
 
 
 
 
Private equity funds
 
$
—

 
$
31,492

 
$
—

 
$
—

 
$
26,648

Tax credit entities
 
10,000

 
14,224

 
—

 
10,964

 
10,000

Other
 
—

 
7,031

 
—

 
—

 
139

Total consolidated
 
$
10,000

 
$
52,747

 
$
—

 
$
10,964

 
$
36,787

 
 
 
 
 
 
 
 
 
 
 
Unconsolidated:
 
 
 
 
 
 
 
 
 
 
Tax credit entities
 
$
13,626

 
$
71,298

 
$
39,510

 
$
—

 
$
—

Other
 
—

 
9,298

 
1,943

 
—

 
—

Total unconsolidated
 
$
13,626

 
$
80,596

 
$
41,453

 
$
—

 
$
—




Other Commitments and Contingencies

At June 30, 2013, Cavanal Hill Funds’ assets included $860 million of U.S. Treasury, $1.0 billion of cash management and $300 million of tax-free money market funds. Assets of these funds consist of highly-rated, short-term obligations of the U.S. Treasury, corporate issuers and U.S. states and municipalities. The net asset value of units in these funds was $1.00 at June 30, 2013. An investment in these funds is not insured by the Federal Deposit Insurance Corporation or guaranteed by BOK Financial or any of its subsidiaries. BOK Financial may, but is not obligated to purchase assets from these funds to maintain the net asset value at $1.00. No assets were purchased from the funds in 2013 or 2012.

Cottonwood Valley Ventures, Inc. (“CVV, Inc.”), an indirectly wholly-owned subsidiary of BOK Financial, is being audited by the Oklahoma Tax Commission (“OTC”) for tax years 2007 through 2009. CVV, Inc. is a qualified venture capital company under the applicable Oklahoma statute. As authorized by the statute, CVV, Inc. guarantees transferable Oklahoma state income tax credits by providing direct debt financing to private companies which qualify as statutory business ventures. Due to certain statutory limitations on utilization of such credits, CVV, Inc. must sell the majority of the credits to provide the economic incentives provided for by the statute. During the third quarter of 2012, CVV, Inc. and credit purchasers settled the assessment related to the 2008 tax credits disallowed with no material adverse impact to the consolidated financial statements. Management does not anticipate that the remaining issue under audit will have a material adverse impact to the consolidated financial statements.

The Company agreed to guarantee rents totaling $28.7 million through September of 2017 to the City of Tulsa as owner of a building immediately adjacent to the Bank’s main office for space currently rented by third-party tenants in the building. All rent payments are current. Remaining guaranteed rents totaled $12.8 million at June 30, 2013. Current leases expire or are subject to lessee termination options at various dates in 2013 and 2014. Our obligation under the agreement would be affected by lessee decisions to exercise these options. In return for this guarantee, the Company will receive 80% of net cash flow as defined in an agreement with the City of Tulsa through September 2017 from rental of space that was vacant at the inception of the agreement. The maximum amount that the Company may receive under this agreement is $4.5 million.

The Company has agreed to purchase approximately $13 million of Oklahoma income tax credits from certain operators of zero emission power facilities from 2013 to 2014. Tax credits are generated based on power sold to unrelated third parties and are transferable for a period of ten years following the year of creation. Tax credits will be sold to qualifying taxpayers as BOK Financial is limited by statute on the amount of credits that may be utilized. Oklahoma statutes were amended in May 2013, so that beginning in the year 2014, transferable credits will no longer be generated by zero emission power facilities. Prior to the amended statute, the Company anticipated credits would be purchased through 2022 under long term contracts with the producers. The agreements contained provisions that they may be terminated in the event of changes in federal law or Oklahoma statutes invalidating the tax credits or their transferability.
Shareholders' Equity
Shareholders' Equity [Text Block]
(8) Shareholders' Equity

The Company will pay a quarterly cash dividend of $0.38 per common share on or about August 30, 2013 to shareholders of record as of August 16, 2013.

Dividends declared during the three and six months ended June 30, 2013 were $0.38 and $0.76 per share, respectively. Dividends declared during the three and six months ended June 30, 2012 were $0.38 and $0.71 per share, respectively.

Accumulated Other Comprehensive Income (Loss)

AOCI includes unrealized gains and losses on available for sale ("AFS") securities and non-credit related unrealized losses on AFS securities for which an other-than-temporary impairment has been recorded in earnings. AOCI also includes unrealized gains on AFS securities that were transferred from AFS to investment securities in the third quarter of 2011. Such amounts are being amortized over the estimated remaining life of the security as an adjustment to yield, offsetting the related amortization of premium on the transferred securities. Unrealized losses on employee benefit plans will be reclassified into income as pension plan costs are recognized over the remaining service period of plan participants. Accumulated losses on the interest rate lock hedge of the 2005 subordinated debt issuance are being reclassified into income over the ten-year life of the debt. Gains and losses in AOCI are net of deferred income taxes.

A rollforward of the components of accumulated other comprehensive income (loss) is included as follows (in thousands):
 
 
Unrealized Gain (Loss) on
 
 
 
 
 
 
Available for Sale Securities
 
Investment Securities Transferred from AFS
 
Employee Benefit Plans
 
Loss on Effective Cash Flow Hedges
 
Total
Balance, December 31, 2011
 
$
135,740

 
$
6,673

 
$
(12,742
)
 
$
(692
)
 
$
128,979

Net change in unrealized gain (loss)
 
40,325

 
—

 
(291
)
 
—

 
40,034

Reclassification adjustments included in earnings:
 
 
 
 
 
 
 
 
 
 
Interest revenue, Investment securities, Taxable securities
 
—

 
(3,421
)
 
—

 
—

 
(3,421
)
Interest expense, Subordinated debentures
 
—

 
—

 
—

 
331

 
331

Net impairment losses recognized in earnings
 
4,580

 
—

 
—

 
—

 
4,580

Gain on available for sale securities, net
 
(24,812
)
 
—

 
—

 
—

 
(24,812
)
Other comprehensive income (loss), before income taxes
 
20,093

 
(3,421
)
 
(291
)
 
331

 
16,712

Income tax benefit (expense)1
 
(7,816
)
 
1,331

 
113

 
(129
)
 
(6,501
)
Other comprehensive income (loss), net of income taxes
 
12,277

 
(2,090
)
 
(178
)
 
202

 
10,211

Balance, June 30, 2012
 
$
148,017

 
$
4,583

 
$
(12,920
)
 
$
(490
)
 
$
139,190

 
 
 
 
 
 
 
 
 
 
 
Balance, December 31, 2012
 
$
155,553

 
$
3,078

 
$
(8,296
)
 
$
(415
)
 
$
149,920

Net change in unrealized gains (losses)
 
(204,545
)
 
—

 
—

 
—

 
(204,545
)
Reclassification adjustments included in earnings:
 
 
 
 
 
 
 
 
 
 
Interest revenue, Investment securities, Taxable securities
 
—

 
(2,021
)
 
—

 
—

 
(2,021
)
Interest expense, Subordinated debentures
 
—

 
—

 
—

 
124

 
124

Net impairment losses recognized in earnings
 
799

 
—

 
—

 
—

 
799

Gain on available for sale securities, net
 
(8,608
)
 
—

 
—

 
—

 
(8,608
)
Other comprehensive income (loss), before income taxes
 
(212,354
)
 
(2,021
)
 
—

 
124

 
(214,251
)
Income tax benefit (expense)1
 
82,605

 
788

 
—

 
(48
)
 
83,345

Other comprehensive income (loss), net of income taxes
 
(129,749
)
 
(1,233
)
 
—

 
76

 
(130,906
)
Balance, June 30, 2013
 
$
25,804

 
$
1,845

 
$
(8,296
)
 
$
(339
)
 
$
19,014


1 
Calculated using a 39% effective tax rate.
Earnings Per Share
Earnings Per Share [Text Block]
(9)  Earnings Per Share
 
(In thousands, except share and per share amounts)
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2013
 
2012
 
2013
 
2012
Numerator:
 
 
 
 
 
 
 
 
Net income attributable to BOK Financial Corp. shareholders
 
$
79,931

 
$
97,628

 
$
167,895

 
$
181,243

Less: Earnings allocated to participating securities
 
854

 
977

 
1,825

 
1,716

Numerator for basic earnings per share – income available to common shareholders
 
79,077

 
96,651

 
166,070

 
179,527

Effect of reallocating undistributed earnings of participating securities
 
2

 
3

 
4

 
5

Numerator for diluted earnings per share – income available to common shareholders
 
$
79,079

 
$
96,654

 
$
166,074

 
$
179,532

 
 
 
 
 
 
 
 
 
Denominator:
 
 

 
 

 
 

 
 

Weighted average shares outstanding
 
68,719,694

 
68,152,242

 
68,645,247

 
68,214,648

Less:  Participating securities included in weighted average shares outstanding
 
725,872

 
679,577

 
740,648

 
641,368

Denominator for basic earnings per common share
 
67,993,822

 
67,472,665

 
67,904,599

 
67,573,280

Dilutive effect of employee stock compensation plans1
 
218,675

 
272,163

 
222,152

 
274,379

Denominator for diluted earnings per common share
 
68,212,497

 
67,744,828

 
68,126,751

 
67,847,659

 
 
 
 
 
 
 
 
 
Basic earnings per share
 
$
1.16

 
$
1.43

 
$
2.45

 
$
2.66

Diluted earnings per share
 
$
1.16

 
$
1.43

 
$
2.44

 
$
2.65

1  Excludes employee stock options with exercise prices greater than current market price.
 
—

 
366,407

 
—

 
361,558

Reportable Segments
Reportable Segments [Text Block]
(10)  Reportable Segments

Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended June 30, 2013 is as follows (in thousands):
 
 
Commercial
 
Consumer
 
Wealth
Management
 
Funds Management and Other
 
BOK
Financial
Consolidated
Net interest revenue from external sources
 
$
90,505

 
$
24,830

 
$
6,557

 
$
45,264

 
$
167,156

Net interest revenue (expense) from internal sources
 
(9,375
)
 
5,167

 
$
5,093

 
(885
)
 
—

Net interest revenue
 
81,130

 
29,997

 
11,650

 
44,379

 
167,156

Provision for credit losses
 
86

 
1,402

 
931

 
(2,419
)
 
—

Net interest revenue after provision for credit losses
 
81,044

 
28,595

 
10,719

 
46,798

 
167,156

Other operating revenue
 
43,411

 
47,993

 
55,164

 
4,193

 
150,761

Other operating expense
 
59,746

 
43,320

 
61,692

 
31,848

 
196,606

Net income before taxes
 
64,709

 
33,268

 
4,191

 
19,143

 
121,311

Federal and state income taxes
 
25,172

 
12,941

 
1,630

 
1,680

 
41,423

Net income
 
39,537

 
20,327

 
2,561

 
17,463

 
79,888

Net loss attributable to non-controlling interest
 
—

 
—

 
—

 
(43
)
 
(43
)
Net income attributable to BOK Financial Corp. shareholders
 
$
39,537

 
$
20,327

 
$
2,561

 
$
17,506

 
$
79,931

 
 
 
 
 
 
 
 
 
 
 
Average assets
 
$
10,359,660

 
$
5,695,098

 
$
4,543,947

 
$
7,060,619

 
$
27,659,324

Average invested capital
 
899,088

 
297,675

 
206,216

 
1,624,675

 
3,027,654

 
 
 
 
 
 
 
 
 
 
 
Performance measurements:
 
 

 
 

 
 

 
 

 
 

Return on average assets
 
1.53
%
 
1.43
%
 
0.23
%
 


 
1.16
%
Return on average invested capital
 
17.64
%
 
27.39
%
 
4.99
%
 


 
10.59
%
Efficiency ratio
 
48.00
%
 
63.10
%
 
92.43
%
 


 
63.11
%

Reportable segments reconciliation to the Consolidated Financial Statements for the six months ended June 30, 2013 is as follows (in thousands):
 
 
Commercial
 
Consumer
 
Wealth
Management
 
Funds Management and Other
 
BOK
Financial
Consolidated
Net interest revenue from external sources
 
$
181,349

 
$
48,925

 
$
13,073

 
$
94,214

 
$
337,561

Net interest revenue (expense) from internal sources
 
(18,502
)
 
10,650

 
$
10,371

 
(2,519
)
 
—

Net interest revenue
 
162,847

 
59,575

 
23,444

 
91,695

 
337,561

Provision for credit losses
 
1,107

 
2,332

 
1,449

 
(12,888
)
 
(8,000
)
Net interest revenue after provision for credit losses
 
161,740

 
57,243

 
21,995

 
104,583

 
345,561

Other operating revenue
 
84,843

 
105,135

 
107,767

 
12,090

 
309,835

Other operating expense
 
118,826

 
95,690

 
118,701

 
64,713

 
397,930

Net income before taxes
 
127,757

 
66,688

 
11,061

 
51,960

 
257,466

Federal and state income taxes
 
49,697

 
25,942

 
4,303

 
8,577

 
88,519

Net income
 
78,060

 
40,746

 
6,758

 
43,383

 
168,947

Net income attributable to non-controlling interest
 
—

 
—

 
—

 
1,052

 
1,052

Net income attributable to BOK Financial Corp. shareholders
 
$
78,060

 
$
40,746

 
$
6,758

 
$
42,331

 
$
167,895

 
 
 
 
 
 
 
 
 
 
 
Average assets
 
$
10,486,541

 
$
5,709,448

 
$
4,615,054

 
$
6,775,738

 
$
27,586,781

Average invested capital
 
895,749

 
297,376

 
204,158

 
1,615,545

 
3,012,828

 
 
 
 
 
 
 
 
 
 
 
Performance measurements:
 
 

 
 

 
 

 
 

 
 

Return on average assets
 
1.50
%
 
1.44
%
 
0.29
%
 


 
1.23
%
Return on average invested capital
 
17.57
%
 
27.63
%
 
6.66
%
 


 
11.24
%
Efficiency ratio
 
47.99
%
 
61.19
%
 
90.87
%
 


 
62.07
%


Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended June 30, 2012 is as follows (in thousands):
 
 
Commercial
 
Consumer
 
Wealth
Management
 
Funds Management and Other
 
BOK
Financial
Consolidated
Net interest revenue from external sources
 
$
93,549

 
$
25,723

 
$
7,137

 
$
54,952

 
$
181,361

Net interest revenue (expense) from internal sources
 
(11,439
)
 
4,803

 
5,194

 
1,442

 
—

Net interest revenue
 
82,110

 
30,526

 
12,331

 
56,394

 
181,361

Provision for credit losses
 
748

 
4,221

 
521

 
(13,490
)
 
(8,000
)
Net interest revenue after provision for credit losses
 
81,362

 
26,305

 
11,810

 
69,884

 
189,361

Other operating revenue
 
52,158

 
74,520

 
51,556

 
8,026

 
186,260

Other operating expense
 
62,625

 
75,602

 
53,264

 
31,520

 
223,011

Net income before taxes
 
70,895

 
25,223

 
10,102

 
46,390

 
152,610

Federal and state income taxes
 
27,578

 
9,812

 
3,930

 
11,829

 
53,149

Net income
 
43,317

 
15,411

 
6,172

 
34,561

 
99,461

Net loss attributable to non-controlling interest
 
—

 
—

 
—

 
1,833

 
1,833

Net income attributable to BOK Financial Corp. shareholders
 
$
43,317

 
$
15,411

 
$
6,172

 
$
32,728

 
$
97,628

 
 
 
 
 
 
 
 
 
 
 
Average assets
 
$
9,865,389

 
$
5,660,601

 
$
4,166,137

 
$
5,846,390

 
$
25,538,517

Average invested capital
 
862,816

 
289,443

 
176,703

 
1,539,771

 
2,868,733

 
 
 
 
 
 
 
 
 
 
 
Performance measurements:
 
 

 
 

 
 

 
 

 
 

Return on average assets
 
1.77
%
 
1.09
%
 
0.59
%
 
 
 
1.54
%
Return on average invested capital
 
20.19
%
 
21.41
%
 
14.01
%
 
 
 
13.69
%
Efficiency ratio
 
52.23
%
 
67.66
%
 
83.80
%
 
 
 
61.98
%

Reportable segments reconciliation to the Consolidated Financial Statements for the six months ended June 30, 2012 is as follows (in thousands):

 
 
Commercial
 
Consumer
 
Wealth
Management
 
Funds Management and Other
 
BOK
Financial
Consolidated
Net interest revenue from external sources
 
$
183,041

 
$
52,310

 
$
14,277

 
$
105,302

 
$
354,930

Net interest revenue (expense) from internal sources
 
(23,488
)
 
9,683

 
10,051

 
3,754

 
—

Net interest revenue
 
159,553

 
61,993

 
24,328

 
109,056

 
354,930

Provision for credit losses
 
7,140

 
5,653

 
1,171

 
(21,964
)
 
(8,000
)
Net interest revenue after provision for credit losses
 
152,413

 
56,340

 
23,157

 
131,020

 
362,930

Other operating revenue
 
90,950

 
124,760

 
97,949

 
9,882

 
323,541

Other operating expense
 
118,485

 
122,913

 
104,589

 
59,161

 
405,148

Net income before taxes
 
124,878

 
58,187

 
16,517

 
81,741

 
281,323

Federal and state income taxes
 
48,578

 
22,635

 
6,425

 
21,031

 
98,669

Net income
 
76,300

 
35,552

 
10,092

 
60,710

 
182,654

Net income attributable to non-controlling interest
 
—

 
—

 
—

 
1,411

 
1,411

Net income attributable to BOK Financial Corp. shareholders
 
$
76,300

 
$
35,552

 
$
10,092

 
$
59,299

 
$
181,243

 
 
 
 
 
 
 
 
 
 
 
Average assets
 
$
9,939,627

 
$
5,722,627

 
$
4,167,268

 
$
5,698,028

 
$
25,527,550

Average invested capital
 
883,408

 
286,420

 
175,376

 
1,506,779

 
2,851,983

 
 
 
 
 
 
 
 
 
 
 
Performance measurements:
 
 

 
 

 
 

 
 

 
 

Return on average assets
 
1.54
%
 
1.25
%
 
0.49
%
 
 
 
1.43
%
Return on average invested capital
 
17.37
%
 
24.96
%
 
11.60
%
 
 
 
12.78
%
Efficiency ratio
 
50.19
%
 
65.08
%
 
85.73
%
 
 
 
60.42
%
Fair Value Measurements
Fair Value Measurements
(11) Fair Value Measurements

Fair value is defined by applicable accounting guidance as the price to sell an asset or transfer a liability in an orderly transaction between market participants in the principal market for the given asset or liability at the measurement date based on market conditions at that date. Certain assets and liabilities are recorded in the Company’s financial statements at fair value. Some are recorded on a recurring basis and some on a non-recurring basis.

For some assets and liabilities, observable market transactions and market information might be available. For other assets and liabilities, observable market transactions and market information might not be available. A hierarchy for fair value has been established which categorizes into three levels the inputs to valuation techniques used to measure fair value. The three levels are as follows:

Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) - fair value is based on unadjusted quoted prices in active markets for identical assets or liabilities.

Significant Other Observable Inputs (Level 2) - Fair value is based on significant other observable inputs which are generally determined based on a single price for each financial instrument provided to us by an applicable third-party pricing service and is based on one or more of the following:

•
Quoted prices for similar, but not identical, assets or liabilities in active markets;
•
Quoted prices for identical or similar assets or liabilities in inactive markets;
•
Inputs other than quoted prices that are observable, such as interest rate and yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates;
•
Other inputs derived from or corroborated by observable market inputs.

Significant Unobservable Inputs (Level 3) - Fair value is based upon model-based valuation techniques for which at least one significant assumption is not observable in the market.

Transfers between levels are recognized as of the end of the reporting period. There were no transfers in or out of quoted prices in active markets for identical instruments, significant other observable inputs or significant unobservable inputs during the six months ended June 30, 2013 and 2012, respectively.

The underlying methods used by the third-party pricing services are considered in determining the primary inputs used to determine fair values. Management has evaluated the methodologies employed by the third-party pricing services by comparing the price provided by the pricing service with other sources, including brokers' quotes, sales or purchases of similar instruments and discounted cash flows to establish a basis for reliance on the pricing service values. Significant differences between the pricing service provided value and other sources are discussed with the pricing service to understand the basis for their values. Based on all observable inputs, management may adjust prices obtained from third-party pricing services to more appropriately reflect the prices that would be received to sell assets or paid to transfer liabilities in orderly transactions in the current market. No significant adjustments were made to prices provided by third-party pricing services at June 30, 2013, December 31, 2012 or June 30, 2012.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The fair value of financial assets and liabilities that are measured on a recurring basis are as follows as of June 30, 2013 (in thousands):
 
 
Total
 
Quoted Prices in Active Markets for Identical Instruments
 
Significant Other Observable Inputs
 
Significant Unobservable Inputs
Assets:
 
 
 
 
 
 
 
 
Trading securities:
 
 
 
 
 
 
 
 
U.S. Government agency debentures
 
$
60,713

 
$
—

 
$
60,713

 
$
—

U.S. agency residential mortgage-backed securities
 
43,858

 
—

 
43,858

 
—

Municipal and other tax-exempt securities
 
53,819

 
—

 
53,819

 
—

Other trading securities
 
32,201

 
—

 
32,201

 
—

Total trading securities
 
190,591

 
—

 
190,591

 
—

Available for sale securities:
 
 

 
 

 
 

 
 

U.S. Treasury
 
1,060

 
1,060

 
—

 
—

Municipal and other tax-exempt
 
95,103

 
—

 
56,256

 
38,847

U.S. agency residential mortgage-backed securities
 
8,372,795

 
—

 
8,372,795

 
—

Privately issued residential mortgage-backed securities
 
297,175

 
—

 
297,175

 
—

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
1,846,943

 
—

 
1,846,943

 
—

Other debt securities
 
35,894

 
—

 
30,701

 
5,193

Perpetual preferred stock
 
25,583

 
—

 
25,583

 
—

Equity securities and mutual funds
 
23,521

 
5,119

 
16,155

 
2,247

Total available for sale securities
 
10,698,074

 
6,179

 
10,645,608

 
46,287

Fair value option securities:
 
 
 
 
 
 
 
 
U.S. agency residential mortgage-backed securities
 
203,816

 
—

 
203,816

 
—

     Other securities
 
1,940

 
—

 
1,940

 
—

Total fair value option securities
 
205,756

 
—

 
205,756

 
—

Residential mortgage loans held for sale
 
301,057

 
—

 
301,057

 
—

Mortgage servicing rights1
 
132,889

 
—

 
—

 
132,889

Derivative contracts, net of cash margin2
 
546,206

 
17,588

 
528,618

 
—

Other assets – private equity funds
 
28,379

 
—

 
—

 
28,379

Liabilities:
 
 

 
 

 
 

 
 

Derivative contracts, net of cash margin2
 
521,991

 
—

 
521,991

 
—

1 
A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities.
2 
See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts based on quoted prices in active markets for identical instruments (Level 1) are exchange-traded energy and agricultural derivative contacts, net of cash margin.

The fair value of financial assets and liabilities that are measured on a recurring basis are as follows as of December 31, 2012 (in thousands):
 
 
Total
 
Quoted Prices in Active Markets for Identical Instruments
 
Significant Other Observable Inputs
 
Significant Unobservable Inputs
Assets:
 
 
 
 
 
 
 
 
Trading securities:
 
 
 
 
 
 
 
 
U.S. Government agency debentures
 
$
16,545

 
$
—

 
$
16,545

 
$
—

U.S. agency residential mortgage-backed securities
 
86,361

 
—

 
86,361

 
—

Municipal and other tax-exempt securities
 
90,326

 
—

 
90,326

 
—

Other trading securities
 
20,870

 
—

 
20,870

 
—

Total trading securities
 
214,102

 
—

 
214,102

 
—

Available for sale securities:
 
 

 
 

 
 

 
 

U.S. Treasury
 
1,002

 
1,002

 
—

 
—

Municipal and other tax-exempt
 
87,142

 
—

 
46,440

 
40,702

U.S. agency residential mortgage-backed securities
 
9,889,821

 
—

 
9,889,821

 
—

Privately issued residential mortgage-backed securities
 
325,163

 
—

 
325,163

 
—

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
895,075

 
—

 
895,075

 
—

Other debt securities
 
36,389

 
—

 
30,990

 
5,399

Perpetual preferred stock
 
25,072

 
—

 
25,072

 
—

Equity securities and mutual funds
 
27,557

 
4,165

 
21,231

 
2,161

Total available for sale securities
 
11,287,221

 
5,167

 
11,233,792

 
48,262

Fair value option securities:
 
 
 
 
 
 
 
 
U.S. agency residential mortgage-backed securities
 
257,040

 
—

 
257,040

 
—

Corporate debt securities
 
26,486

 
—

 
26,486

 
—

     Other securities
 
770

 
—

 
770

 
—

Total fair value option securities
 
284,296

 
—

 
284,296

 
—

Residential mortgage loans held for sale
 
293,762

 
—

 
293,762

 
—

Mortgage servicing rights1
 
100,812

 
—

 
—

 
100,812

Derivative contracts, net of cash margin 2
 
338,106

 
11,597

 
326,509

 
—

Other assets – private equity funds
 
28,169

 
—

 
—

 
28,169

Liabilities:
 
 

 
 

 
 

 
 

Derivative contracts, net of cash margin 2
 
283,589

 
—

 
283,589

 
—

1 
A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities.
2 
See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts based on quoted prices in active markets for identical instruments (Level 1) are exchange-traded energy and agricultural derivative contacts, net of cash margin.


The fair value of financial assets and liabilities that are measured on a recurring basis are as follows as of June 30, 2012 (in thousands):
 
 
Total
 
Quoted Prices in
Active Markets for Identical Instruments
 
Significant Other Observable Inputs
 
Significant Unobservable Inputs
Assets:
 
 
 
 
 
 
 
 
Trading securities:
 
 
 
 
 
 
 
 
U.S. Government agency debentures
 
$
53,514

 
$
992

 
$
52,522

 
$
—

U.S. agency residential mortgage-backed securities
 
46,502

 
—

 
46,502

 
—

Municipal and other tax-exempt securities
 
44,632

 
—

 
44,632

 
1,852

Other trading securities
 
4,669

 
—

 
4,545

 
124

Total trading securities
 
149,317

 
992

 
148,201

 
1,976

Available for sale securities:
 
 

 
 

 
 

 
 

U.S. Treasury
 
1,003

 
1,003

 
—

 
—

Municipal and other tax-exempt
 
88,458

 
—

 
46,796

 
41,662

U.S. agency residential mortgage-backed securities
 
9,903,532

 
—

 
9,903,532

 
—

Privately issued residential mortgage-backed securities
 
317,761

 
—

 
317,761

 
—

Other debt securities
 
36,286

 
—

 
30,898

 
5,388

Perpetual preferred stock
 
23,431

 
—

 
23,431

 
—

Equity securities and mutual funds
 
24,944

 
6,912

 
18,032

 
—

Total available for sale securities
 
10,395,415

 
7,915

 
10,340,450

 
47,050

Fair value option securities:
 
 
 
 
 
 
 
 
U.S. agency residential mortgage-backed securities
 
299,467

 
—

 
299,467

 
—

Corporate debt securities
 
25,710

 
—

 
25,710

 
—

Total fair value option securities
 
325,177

 
—

 
325,177

 
—

Residential mortgage loans held for sale
 
259,174

 
—

 
259,174

 
—

Mortgage servicing rights1
 
91,783

 
—

 
—

 
91,783

Derivative contracts, net of cash margin 2
 
366,204

 
802

 
365,402

 
—

Other assets – private equity funds
 
31,492

 
—

 
—

 
31,492

Liabilities:
 
 

 
 

 
 

 
 

Derivative contracts, net of cash margin 2
 
370,053

 
251

 
369,802

 
—

1 
A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities.
2 
See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts based on quoted prices in active markets for identical instruments (Level 1) are exchange-traded energy and agricultural derivative contacts, net of cash margin.


Following is a description of the Company's valuation methodologies used for assets and liabilities measured on a recurring basis:
Securities
The fair values of trading, available for sale and fair value options securities are based on quoted prices for identical instruments in active markets, when available. If quoted prices for identical instruments are not available, fair values are based on significant other observable inputs such as quoted prices of comparable instruments or interest rates and credit spreads, yield curves, volatilities, prepayment speeds and loss severities.

The fair value of certain available for sale municipal and other debt securities may be based on significant unobservable inputs. These significant unobservable inputs include limited observed trades, projected cash flows, current credit rating of the issuers and, when applicable, the insurers of the debt and observed trades of similar debt. Discount rates are primarily based on reference to interest rate spreads on comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies adjusted for a lack of trading volume. Significant unobservable inputs are developed by investment securities professionals involved in the active trading of similar securities. A summary of significant inputs used to value these securities follows. A management committee composed of senior members from the Company's Capital Markets, Risk Management and Finance departments assess the appropriateness of these inputs monthly.

Derivatives

All derivative instruments are carried on the balance sheet at fair value. Fair values for exchange-traded contracts are based on quoted prices. Fair values for over-the-counter interest rate, commodity and foreign exchange contracts are based on valuations provided either by third-party dealers in the contracts, quotes provided by independent pricing services, or a third-party provided pricing model that use significant other observable market inputs.

Credit risk is considered in determining the fair value of derivative instruments. Management determines fair value adjustments based on various risk factors including but not limited to counterparty credit rating or equivalent loan grading, derivative contract notional size, price volatility of the underlying commodity, duration of the derivative contracts and expected loss severity. Expected loss severity is based on historical losses for similarly risk graded commercial loan customers. Decreases in counterparty credit rating or grading and increases in price volatility and expected loss severity all tend to increase the credit quality adjustment which reduces the fair value of asset contracts. The reduction in fair value is recognized in earnings during the current period.

We also consider our own credit risk in determining the fair value of derivative contracts. Changes in our credit rating would affect the fair value of our derivative liabilities. In the event of a credit downgrade, the fair value of our derivative liabilities would increase. The change in the fair value would be recognized in earnings in the current period.
Residential Mortgage Loans Held for Sale
Residential mortgage loans held for sale are carried on the balance sheet at fair value. The fair values of residential mortgage loans held for sale are based upon quoted market prices of such loans sold in securitization transactions, including related unfunded loan commitments.

Other Assets - Private Equity Funds
The fair value of the portfolio investments of the Company's two private equity funds are based upon net asset value reported by the underlying funds, as adjusted by the general partner when necessary to represent the price that would be received to sell the assets. The Company's private equity funds provide customers alternative investment opportunities as limited partners of the funds. As fund of funds, the private equity funds invest in other limited partnerships or limited liability companies that invest substantially all of their assets in U.S. companies pursuing diversified investment strategies including early-stage venture capital, distressed securities and corporate or asset buy-outs. Private equity fund assets are long-term, illiquid investments. No secondary market exists for these assets. The private equity funds typically invest in funds that provide no redemption rights to investors. The fair value of the private equity investments may only be realized through cash distributions from the underlying funds.

The following represents the changes for the three months ended June 30, 2013 related to assets measured at fair value on a recurring basis using significant unobservable inputs (in thousands):
 
 
Available for Sale Securities
 
 
 
 
Municipal and other tax-exempt
 
Other debt securities
 
Equity securities and mutual funds
 
Other assets – private equity funds
Balance, Mar. 31, 2013
 
$
39,007

 
$
5,193

 
$
2,472

 
$
29,216

Purchases and capital calls
 
—

 
—

 
—

 
148

Redemptions and distributions
 
—

 
—

 
—

 
(1,005
)
Gain (loss) recognized in earnings:
 
 

 
 

 
 
 
 

Gain on other assets, net
 
—

 
—

 
—

 
20

Gain on available for sale securities, net
 
—

 
—

 
—

 
—

Other-than-temporary impairment losses
 
—

 
—

 
—

 
—

Other comprehensive gain (loss)
 
(160
)
 
—

 
(225
)
 
—

Balance, June 30, 2013
 
$
38,847

 
$
5,193

 
$
2,247

 
$
28,379


The following represents the changes for the six months ended June 30, 2013 related to assets measured at fair value on a recurring basis using significant unobservable inputs (in thousands):
 
 
Available for Sale Securities
 
 
 
 
Municipal and other tax-exempt
 
Other debt securities
 
Equity securities and mutual funds
 
Other assets – private equity funds
Balance, Dec. 31, 2012
 
$
40,702

 
$
5,399

 
$
2,161

 
$
28,169

Purchases and capital calls
 
—

 
—

 
—

 
640

Redemptions and distributions
 
(98
)
 
—

 
—

 
(1,835
)
Gain (loss) recognized in earnings:
 
 

 
 

 
 
 
 

Gain on other assets, net
 
—

 
—

 
—

 
1,405

Gain on available for sale securities, net
 
—

 
—

 
—

 
—

Other-than-temporary impairment losses
 
—

 
—

 
—

 
—

Other comprehensive gain (loss)
 
(1,757
)
 
(206
)
 
86

 
—

Balance, June 30, 2013
 
$
38,847

 
$
5,193

 
$
2,247

 
$
28,379


The following represents the changes for the three months ended June 30, 2012 related to assets measured at fair value on a recurring basis using significant unobservable inputs (in thousands):
 
 
Available for Sale Securities
 
 
 
 
Municipal and other tax-exempt
 
Other debt securities
 
Other assets – private equity funds
Balance, Mar. 31, 2012
 
$
41,977

 
$
5,900

 
$
30,993

Purchases, and capital calls
 
—

 
—

 
820

Redemptions and distributions
 
(363
)
 
(500
)
 
(2,559
)
Gain (loss) recognized in earnings
 
 

 
 

 
 

Gain (loss) on other assets, net
 
—

 
—

 
2,238

Gain on available for sale securities, net
 
—

 
—

 
—

Other-than-temporary impairment losses
 
—

 
—

 
—

Other comprehensive (loss)
 
48

 
(12
)
 
—

Balance, June 30, 2012
 
$
41,662

 
$
5,388

 
$
31,492


The following represents the changes for the six months ended June 30, 2012 related to assets measured at fair value on a recurring basis using significant unobservable inputs (in thousands):
 
 
Available for Sale Securities
 
 
 
 
Municipal and other tax-exempt
 
Other debt securities
 
Other assets – private equity funds
Balance, Dec. 31, 2011
 
$
42,353

 
$
5,900

 
$
30,902

Purchases, and capital calls
 
—

 
—

 
1,909

Redemptions and distributions
 
(463
)
 
(500
)
 
(3,166
)
Gain (loss) recognized in earnings
 
 

 
 

 
 
Gain (loss) on other assets, net
 
—

 
—

 
1,847

Gain on available for sale securities, net
 
1

 
—

 
—

Other-than-temporary impairment losses
 
—

 
—

 
—

Other comprehensive (loss)
 
(229
)
 
(12
)
 
—

Balance, June 30, 2012
 
$
41,662

 
$
5,388

 
$
31,492



A summary of quantitative information about assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) as of June 30, 2013 follows (in thousands):
Quantitative Information about Level 3 Recurring Fair Value Measurements
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Par
Value
 
Amortized
Cost6
 
Fair
Value
 
Valuation Technique(s)
 
Unobservable Input
 
Range
(Weighted Average)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for sale securities
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax-exempt securities
 
 
 
 
 
 
 
 
 
 
 
 
 
Investment grade
 
$
28,470

 
$
28,375

 
$
27,116

 
Discounted cash flows
1 
Interest rate spread
 
4.99%-5.49% (5.24%)
2 
95.01%-95.6% (95.25%)
3 
Below investment grade
 
17,000

 
12,384

 
11,731

 
Discounted cash flows
1 
Interest rate spread
 
9.15%-11.19% (9.87%)
4 
68.91%-69.09% (69.01%)
3 
Total municipal and other tax-exempt securities
 
45,470

 
40,759

 
38,847

 
 
 
 
 
 
 
Other debt securities
 
5,400

 
5,400

 
5,193

 
Discounted cash flows
1 
Interest rate spread
 
4.41%-5.69% (5.48%)
5 
96.13%-96.16% (96.16%)
3 
Equity securities and mutual funds
 
N/A
 
2,420

 
2,247

 
Tangible book value per share of publicly traded financial institutions of similar size, less liquidity discount.
 
Peer group tangible book per share and liquidity discount.
 
N/A
7 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Other assets - private equity funds
 
N/A
 
N/A
 
28,379

 
Net asset value reported by underlying fund
 
Net asset value reported by underlying fund
 
N/A
 
1 
Discounted cash flows developed using discount rates primarily based on reference to interest rate spreads for comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies, adjusted for lack of trading volume
2 
Interest rate yields used to value investment grade tax-exempt securities represent a spread of 457 to 520 basis points over average yields for comparable tax-exempt securities.
3 
Represents fair value as a percentage of par value
4 
Interest rate yields determined using a spread of 700 basis points over comparable municipal securities of varying durations.
5 
Interest rate yields used to value investment grade taxable securities based on comparable short-term taxable securities which are generally yielding less than 1%.
6 
Amortized cost reduced by other-than-temporary impairments recorded in earnings. See Note 2 for additional discussion.
7 
Fair value of shares of a smaller privately-held financial institution were valued using the tangible book value per share of similarly sized financial institutions within the immediate geographical market with a discount of 20% due to the liquidity of the shares.

The fair value of these securities measured at fair value using significant unobservable inputs are sensitive primarily to changes in interest rate spreads. At June 30, 2013, for tax-exempt securities rated investment grade by all nationally-recognized rating agencies, a 100 basis point increase in the spreads over average yields for comparable securities would result in an additional decrease in the fair value of $262 thousand. For taxable securities rated investment grade by all nationally-recognized rating agencies, a 100 basis point increase in the spreads over average yield for comparable securities would result in an additional decrease in the fair value of $50 thousand. For municipal and other tax-exempt securities rated below investment grade by at least one of the nationally-recognized rating agencies, a 100 basis point increase in the spread over average yields for comparable securities would result in an additional decrease in the fair value of these securities of $330 thousand.


A summary of quantitative information about Recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of December 31, 2012 follows (in thousands):
Quantitative Information about Level 3 Recurring Fair Value Measurements
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Par
Value
 
Amortized
Cost6
 
Fair
Value
 
Valuation Technique(s)
 
Unobservable Input
 
Range
(Weighted Average)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for sale securities
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax-exempt securities
 
 
 
 
 
 
 
 
 
 
 
 
 
Investment grade
 
$
28,570

 
$
28,473

 
$
28,318

 
Discounted cash flows
1 
Interest rate spread
 
1%-1.5% (1.25%)
2 
98.83%-99.43% (99.12%)
3 
Below investment grade
 
17,000

 
12,384

 
12,384

 
Discounted cash flows
1 
Interest rate spread
 
7.21%-9.83% (7.82%)
4 
72.79%-73% (72.85%)
3 
Total municipal and other tax-exempt securities
 
45,570

 
40,857

 
40,702

 
 
 
 
 
 
 
Other debt securities
 
5,400

 
5,400

 
5,399

 
Discounted cash flows
1 
Interest rate spread
 
1.65%-1.71% (1.7%)
5 
100% (100%)
3 
Equity securities and mutual funds
 
N/A
 
2,161

 
2,161

 
Tangible book value per share of publicly traded financial institutions of similar size, less liquidity discount.
 
Peer group tangible book per share and liquidity discount.
 
N/A
7 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Other assets - private equity funds
 
N/A
 
N/A
 
28,169

 
Net asset value reported by underlying fund
 
Net asset value reported by underlying fund
 
N/A
 
1 
Discounted cash flows developed using discount rates primarily based on reference to interest rate spreads for comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies, adjusted for lack of trading volume
2 
Interest rate yields used to value investment grade tax-exempt securities represent a spread of 75 to 80 basis points over average yields for comparable tax-exempt securities.
3 
Represents fair value as a percentage of par value
4 
Interest rate yields determined using a spread of 700 basis points over comparable municipal securities of varying durations.
5 
Interest rate yields used to value investment grade taxable securities based on comparable short-term taxable securities which are generally yielding less than 1%.
6 
Amortized cost reduced by other-than-temporary impairments recorded in earnings. See Note 2 for additional discussion.
7 
Fair value of shares of a smaller privately-held financial institution were valued using the tangible book value per share of similarly sized financial institutions within the immediate geographical market with a discount of 20% due to the liquidity of the shares.


A summary of quantitative information about Recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of June 30, 2012 follows (in thousands):

Quantitative Information about Level 3 Recurring Fair Value Measurements
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Par
Value
 
Amortized
Cost6
 
Fair
Value
 
Valuation Technique(s)
 
Unobservable Input
 
Range
(Weighted Average)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for sale securities
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax-exempt securities
 
 
 
 
 
 
 
 
 
 
 
 
 
Investment grade
 
$
29,100

 
$
28,998

 
$
28,858

 
Discounted cash flows
1 
Interest rate spread
 
1%-1.5% (1.25%)
2 
98.88%-99.49% (99.17%)
3 
Below investment grade
 
17,000

 
13,396

 
12,804

 
Discounted cash flows
1 
Interest rate spread
 
6.2%-9.16% (6.87%)
4 
75.21%-75.49% (75.32%)
3 
Total municipal and other tax-exempt securities
 
46,100

 
42,394

 
41,662

 
 
 
 
 
 
 
Other debt securities
 
5,400

 
5,400

 
5,388

 
Discounted cash flows
1 
Interest rate spread
 
1.74%-1.75% (1.74%)
5 
98.72%-100% (99.78%)
3 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Other assets - private equity funds
 
N/A
 
N/A
 
31,492

 
Net asset value reported by underlying fund
 
Net asset value reported by underlying fund
 
N/A
 
1 
Discounted cash flows developed using discount rates primarily based on reference to interest rate spreads for comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies, adjusted for lack of trading volume
2 
Interest rate yields used to value investment grade tax-exempt securities represent a spread of 75 to 80 basis points over average yields for comparable tax-exempt securities.
3 
Represents fair value as a percentage of par value
4 
Interest rate yields determined using a spread of 600 basis points over comparable municipal securities of varying durations.
5 
Interest rate yields used to value investment grade taxable securities based on comparable short-term taxable securities which are generally yielding less than 1%.
6 
Amortized cost reduced by other-than-temporary impairments recorded in earnings. See Note 2 for additional discussion.


Fair Value of Assets and Liabilities Measured on a Non-Recurring Basis

Assets measured at fair value on a non-recurring basis include pension plan assets, which are based on quoted prices in active markets for identical instruments, collateral for certain impaired loans and real property and other assets acquired to satisfy loans, which are based primarily on comparisons to completed sales of similar assets. In addition, goodwill impairment is evaluated based on the fair value of the Company's reporting units.

The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at June 30, 2013 for which the fair value was adjusted during the six months ended June 30, 2013:
 
 
 
 
 
 
 
Fair Value Adjustments for the
 
Carrying Value at June 30, 2013
 
Three Months Ended June 30, 2013 Recognized in:
 
Six Months Ended June 30, 2013 Recognized in:
 
Quoted Prices
in Active Markets for Identical Instruments
 
Significant
Other
Observable
Inputs
 
Significant
Unobservable
Inputs
 
Gross charge-offs against allowance for loan losses
 
Net losses and expenses of repossessed assets, net
 
Gross charge-offs against allowance for loan losses
 
Net losses and expenses of repossessed assets, net
Impaired loans
$
—

 
$
10,245

 
$
4,930

 
$
5,060

 
$
—

 
$
6,601

 
$
—

Real estate and other repossessed assets
—

 
7,949

 
271

 
—

 
863

 
—

 
1,014

 
The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at June 30, 2012 for which the fair value was adjusted during the six months ended June 30, 2012:
 
 
 
 
 
 
 
Fair Value Adjustments for the
 
Carrying Value at June 30, 2012
 
Three Months Ended June 30, 2012 Recognized in:
 
Six Months Ended June 30, 2012 Recognized in:
 
Quoted Prices
in Active Markets for Identical Instruments
 
Significant
Other
Observable
Inputs
 
Significant
Unobservable
Inputs
 
Gross charge-offs against allowance for loan losses
 
Net losses and expenses of repossessed assets, net
 
Gross charge-offs against allowance for loan losses
 
Net losses and expenses of repossessed assets, net
Impaired loans
$
—

 
$
29,369

 
$
2,881

 
$
4,406

 
$
—

 
$
10,826

 
$
—

Real estate and other repossessed assets
—

 
27,474

 
3,035

 
—

 
4,488

 
—

 
6,876



The fair value of collateral-dependent impaired loans and real estate and other repossessed assets and the related fair value adjustments are generally based on unadjusted third-party appraisals. Our appraisal review policies require appraised values to be supported by observed inputs derived principally from or corroborated by observable market data. Appraisals that are not based on observable inputs or that require significant adjustments or fair value measurements that are not based on third-party appraisals are considered to be based on significant unobservable inputs. Non-recurring fair value measurements of collateral-dependent impaired loans and real estate and other repossessed assets based on significant unobservable inputs are generally due to estimate of current fair values between appraisal dates. Significant unobservable inputs include listing prices for the same or comparable assets, uncorroborated expert opinions or management's knowledge of the collateral or industry. These inputs are developed by asset management and workout professional and approved by senior Credit Administration executives.

A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of June 30, 2013 follows (in thousands):
Quantitative Information about Level 3 Non-recurring Fair Value Measurements
 
 
Fair Value
 
Valuation Technique(s)
 
Unobservable Input
 
Range
(Weighted Average)
 
 
 
 
 
 
 
 
 
Impaired loans
 
$
4,930

 
Appraised value, as adjusted
 
Broker quotes and management's knowledge of industry and collateral.
 
N/A
Real estate and other repossessed assets
 
271

 
Listing value, less cost to sell
 
Marketability adjustments off appraised value
 
71%-81% (76%)1
1 
Marketability adjustments include consideration of estimated costs to sell which is approximately 15% of fair value.

A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of June 30, 2012 follows (in thousands):
Quantitative Information about Level 3 Non-recurring Fair Value Measurements
 
 
Fair Value
 
Valuation Technique(s)
 
Unobservable Input
 
Range
(Weighted Average)
 
 
 
 
 
 
 
 
 
Impaired loans
 
$
2,881

 
Appraised value, as adjusted
 
Broker quotes and management's knowledge of industry and collateral.
 
N/A
Real estate and other repossessed assets
 
3,035

 
Listing value, less cost to sell
 
Marketability adjustments off appraised value
 
58%-85% (71%)1
1 
Marketability adjustments include consideration of estimated costs to sell which is approximately 15% of fair value. In addition, $887 thousand of real estate and other repossessed assets at June 30, 2012 are based on expert opinions or management's knowledge of the collateral or industry and do not have and independently appraised value.
Fair Value of Financial Instruments

The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis as of June 30, 2013 (dollars in thousands):
 
 
Carrying
Value
 
Range of
Contractual
Yields
 
Average
Re-pricing
(in years)
 
Discount
Rate
 
Estimated
Fair
Value
Cash and cash equivalents
 
$
1,078,385

 
 
 
 
 
 
 
$
1,078,385

Trading securities:
 
 
 
 
 
 
 
 
 
 
U.S. Government agency debentures
 
60,713

 
 
 
 
 
 
 
60,713

U.S. agency residential mortgage-backed securities
 
43,858

 
 
 
 
 
 
 
43,858

Municipal and other tax-exempt securities
 
53,819

 
 
 
 
 
 
 
53,819

Other trading securities
 
32,201

 
 
 
 
 
 
 
32,201

Total trading securities
 
190,591

 
 
 
 
 
 
 
190,591

Investment securities:
 
 

 
 
 
 
 
 
 
 

Municipal and other tax-exempt
 
375,317

 
 
 
 
 
 
 
371,690

U.S. agency residential mortgage-backed securities
 
64,172

 
 
 
 
 
 
 
66,796

Other debt securities
 
176,301

 
 
 
 
 
 
 
187,219

Total investment securities
 
615,790

 
 
 
 
 
 
 
625,705

Available for sale securities:
 
 

 
 
 
 
 
 
 
 

U.S. Treasury
 
1,060

 
 
 
 
 
 
 
1,060

Municipal and other tax-exempt
 
95,103

 
 
 
 
 
 
 
95,103

U.S. agency residential mortgage-backed securities
 
8,372,795

 
 
 
 
 
 
 
8,372,795

Privately issued residential mortgage-backed securities
 
297,175

 
 
 
 
 
 
 
297,175

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
1,846,943

 
 
 
 
 
 
 
1,846,943

Other debt securities
 
35,894

 
 
 
 
 
 
 
35,894

Perpetual preferred stock
 
25,583

 
 
 
 
 
 
 
25,583

Equity securities and mutual funds
 
23,521

 
 
 
 
 
 
 
23,521

Total available for sale securities
 
10,698,074

 
 
 
 
 
 
 
10,698,074

Fair value option securities:
 
 
 
 
 
 
 
 
 
 
U.S. agency residential mortgage-backed securities
 
203,816

 
 
 
 
 
 
 
203,816

      Other securities
 
1,940

 
 
 
 
 
 
 
1,940

Total fair value option securities
 
205,756

 
 
 
 
 
 
 
205,756

Residential mortgage loans held for sale
 
301,057

 
 
 
 
 
 
 
301,057

Loans:
 
 

 
 
 
 
 
 
 
 

Commercial
 
7,708,120

 
0.25 - 30.00
 
0.63

 
0.59 - 4.19

 
7,638,327

Commercial real estate
 
2,317,096

 
0.38 - 18.00
 
0.83

 
1.23 - 3.47

 
2,288,188

Residential mortgage
 
2,039,785

 
0.38 - 18.00
 
3.64

 
0.70 - 4.46

 
2,038,375

Consumer
 
375,781

 
0.38 - 21.00
 
0.35

 
1.26 - 3.74

 
369,375

Total loans
 
12,440,782

 
 
 
 

 
 

 
12,334,265

Allowance for loan losses
 
(203,124
)
 
 
 
 

 
 

 
—

Net loans
 
12,237,658

 
 
 
 

 
 

 
12,334,265

Mortgage servicing rights
 
132,889

 
 
 
 

 
 

 
132,889

Derivative instruments with positive fair value, net of cash margin
 
546,206

 
 
 
 

 
 

 
546,206

Other assets – private equity funds
 
28,379

 
 
 
 

 
 

 
28,379

Deposits with no stated maturity
 
16,728,258

 
 
 
 

 
 

 
16,728,258

Time deposits
 
2,767,972

 
0.03 - 9.64
 
2.02

 
0.76 - 1.30

 
2,781,202

Other borrowed funds
 
4,073,915

 
0.25 - 5.25
 
—

 
0.07 - 2.66

 
4,034,685

Subordinated debentures
 
347,716

 
0.97 - 5.00
 
3.10

 
2.24
%
 
345,201

Derivative instruments with negative fair value, net of cash margin
 
521,991

 
 
 
 

 
 

 
521,991

The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis as of December 31, 2012 (dollars in thousands):
 
 
Carrying
Value
 
Range of
Contractual
Yields
 
Average
Re-pricing
(in years)
 
Discount
Rate
 
Estimated
Fair
Value
Cash and cash equivalents
 
$
1,286,239

 
 
 
 
 
 
 
$
1,286,239

Trading securities:
 
 
 
 
 
 
 
 
 
 
U.S. Government agency debentures
 
16,545

 
 
 
 
 
 
 
16,545

U.S. agency residential mortgage-backed securities
 
86,361

 
 
 
 
 
 
 
86,361

Municipal and other tax-exempt securities
 
90,326

 
 
 
 
 
 
 
90,326

Other trading securities
 
20,870

 
 
 
 
 
 
 
20,870

Total trading securities
 
214,102

 
 
 
 
 
 
 
214,102

Investment securities:
 
 

 
 
 
 
 
 
 
 

Municipal and other tax-exempt
 
232,700

 
 
 
 
 
 
 
235,940

U.S. agency residential mortgage-backed securities
 
82,767

 
 
 
 
 
 
 
85,943

Other debt securities
 
184,067

 
 
 
 
 
 
 
206,575

Total investment securities
 
499,534

 
 
 
 
 
 
 
528,458

Available for sale securities:
 
 

 
 
 
 
 
 
 
 

U.S. Treasury
 
1,002

 
 
 
 
 
 
 
1,002

Municipal and other tax-exempt
 
87,142

 
 
 
 
 
 
 
87,142

U.S. agency residential mortgage-backed securities
 
9,889,821

 
 
 
 
 
 
 
9,889,821

Privately issued residential mortgage-backed securities
 
325,163

 
 
 
 
 
 
 
325,163

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
895,075

 
 
 
 
 
 
 
895,075

Other debt securities
 
36,389

 
 
 
 
 
 
 
36,389

Perpetual preferred stock
 
25,072

 
 
 
 
 
 
 
25,072

Equity securities and mutual funds
 
27,557

 
 
 
 
 
 
 
27,557

Total available for sale securities
 
11,287,221

 
 
 
 
 
 
 
11,287,221

Fair value option securities:
 
 
 
 
 
 
 
 
 
 
U.S. agency residential mortgage-backed securities
 
257,040

 
 
 
 
 
 
 
257,040

Corporate debt securities
 
26,486

 
 
 
 
 
 
 
26,486

      Other securities
 
770

 
 
 
 
 
 
 
770

Total fair value option securities
 
284,296

 
 
 
 
 
 
 
284,296

Residential mortgage loans held for sale
 
293,762

 
 
 
 
 
 
 
293,762

Loans:
 
 

 
 
 
 

 
 

 
 

Commercial
 
7,641,912

 
0.21 - 30.00
 
0.69

 
0.51 - 3.59

 
7,606,505

Commercial real estate
 
2,228,999

 
0.21 - 18.00
 
0.92

 
1.26 - 3.18

 
2,208,217

Residential mortgage
 
2,045,040

 
0.38 - 18.00
 
3.34

 
0.86 - 3.09

 
2,110,773

Consumer
 
395,505

 
0.38 - 21.00
 
0.32

 
1.37 - 3.60

 
388,748

Total loans
 
12,311,456

 
 
 
 

 
 

 
12,314,243

Allowance for loan losses
 
(215,507
)
 
 
 
 

 
 

 
—

Net loans
 
12,095,949

 
 
 
 

 
 

 
12,314,243

Mortgage servicing rights
 
100,812

 
 
 
 

 
 

 
100,812

Derivative instruments with positive fair value, net of cash margin
 
338,106

 
 
 
 

 
 

 
338,106

Other assets – private equity funds
 
28,169

 
 
 
 

 
 

 
28,169

Deposits with no stated maturity
 
18,211,068

 
 
 
 

 
 

 
18,211,068

Time deposits
 
2,967,992

 
0.01 - 9.64
 
2.15

 
0.80 - 1.15

 
3,037,708

Other borrowed funds
 
2,706,221

 
0.09 - 5.25
 
—

 
0.09 - 2.67

 
2,696,574

Subordinated debentures
 
347,633

 
1.00 - 5.00
 
3.56

 
2.40
%
 
345,675

Derivative instruments with negative fair value, net of cash margin
 
283,589

 
 
 
 

 
 

 
283,589


The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis as of June 30, 2012 (dollars in thousands):
 
 
Carrying
Value
 
Range of
Contractual
Yields
 
Average
Re-pricing
(in years)
 
Discount
Rate
 
Estimated
Fair
Value
Cash and cash equivalents
 
$
639,263

 
 
 
 
 
 
 
$
639,263

Trading securities:
 
 
 
 
 
 
 
 
 
 
U.S. Government agency debentures
 
53,514

 
 
 
 
 
 
 
53,514

U.S. agency residential mortgage-backed securities
 
46,502

 
 
 
 
 
 
 
46,502

Municipal and other tax-exempt securities
 
44,632

 
 
 
 
 
 
 
44,632

Other trading securities
 
4,669

 
 
 
 
 
 
 
4,669

Total trading securities
 
149,317

 
 
 
 
 
 
 
149,317

Investment securities:
 
 

 
 
 
 
 
 
 
 

Municipal and other tax-exempt
 
126,168

 
 
 
 
 
 
 
130,308

U.S. agency residential mortgage-backed securities
 
102,347

 
 
 
 
 
 
 
105,535

Other debt securities
 
183,964

 
 
 
 
 
 
 
204,795

Total investment securities
 
412,479

 
 
 
 
 
 
 
440,638

Available for sale securities:
 
 

 
 
 
 
 
 
 
 

U.S. Treasury
 
1,003

 
 
 
 
 
 
 
1,003

Municipal and other tax-exempt
 
88,458

 
 
 
 
 
 
 
88,458

U.S. agency residential mortgage-backed securities
 
9,903,532

 
 
 
 
 
 
 
9,903,532

Privately issued residential mortgage-backed securities
 
317,761

 
 
 
 
 
 
 
317,761

Other debt securities
 
36,286

 
 
 
 
 
 
 
36,286

Perpetual preferred stock
 
23,431

 
 
 
 
 
 
 
23,431

Equity securities and mutual funds
 
24,944

 
 
 
 
 
 
 
24,944

Total available for sale securities
 
10,395,415

 
 
 
 
 
 
 
10,395,415

Fair value option securities:
 
 
 
 
 
 
 
 
 
 
U.S. agency residential mortgage-backed securities
 
299,467

 
 
 
 
 
 
 
299,467

Corporate debt securities
 
25,710

 
 
 
 
 
 
 
25,710

Total fair value option securities
 
325,177

 
 
 
 
 
 
 
325,177

Residential mortgage loans held for sale
 
259,174

 
 
 
 
 
 
 
259,174

Loans:
 
 

 
 
 
 
 
 
 
 

Commercial
 
7,035,535

 
0.25 - 30.00
 
0.70

 
0.63 - 3.68

 
6,993,377

Commercial real estate
 
2,149,730

 
0.38 - 18.00
 
0.92

 
1.33 - 3.33

 
2,129,731

Residential mortgage
 
2,002,885

 
0.38 - 18.00
 
3.10

 
1.08 - 3.52

 
2,040,062

Consumer
 
388,281

 
0.38 - 21.00
 
0.34

 
1.59 - 3.79

 
383,088

Total loans
 
11,576,431

 
 
 
 

 
 

 
11,546,258

Allowance for loan losses
 
(231,669
)
 
 
 
 

 
 

 
—

Net loans
 
11,344,762

 
 
 
 

 
 

 
11,546,258

Mortgage servicing rights
 
91,783

 
 
 
 

 
 

 
91,783

Derivative instruments with positive fair value, net of cash margin
 
366,204

 
 
 
 

 
 

 
366,204

Other assets – private equity funds
 
31,492

 
 
 
 

 
 

 
31,492

Deposits with no stated maturity
 
15,157,587

 
 
 
 

 
 

 
15,157,587

Time deposits
 
3,107,950

 
0.01 - 9.64
 
2.17

 
0.92 - 1.31

 
3,175,687

Other borrowed funds
 
2,648,753

 
0.09 - 5.25
 
—

 
0.09 - 2.70

 
2,642,598

Subordinated debentures
 
353,378

 
1.16 - 5.00
 
4.02

 
2.40
%
 
350,813

Derivative instruments with negative fair value, net of cash margin
 
370,053

 
 
 
 

 
 

 
370,053


Because no market exists for certain of these financial instruments and management does not intend to sell these financial instruments, the fair values shown in the tables above may not represent values at which the respective financial instruments could be sold individually or in the aggregate at the given reporting date.
 
The following methods and assumptions were used in estimating the fair value of these financial instruments:
 
Cash and Cash Equivalents
 
The book value reported in the consolidated balance sheet for cash and short-term instruments approximates those assets’ fair values.
 
Securities
 
The fair values of securities are generally based on Significant Other Observable Inputs such as quoted prices for comparable instruments or interest rates and credit spreads, yield curves, volatilities prepayment speeds and loss severities. 

Loans
 
The fair value of loans, excluding loans held for sale, are based on discounted cash flow analyses using interest rates and credit and liquidity spreads currently being offered for loans with similar remaining terms to maturity and risk, adjusted for the impact of interest rate floors and ceilings which are classified as Significant Unobservable Inputs. The fair values of loans were estimated to approximate their discounted cash flows less loan loss allowances allocated to these loans of $161 million at June 30, 2013, $171 million at December 31, 2012 and $191 million at June 30, 2012.
 
Deposits
 
The fair values of time deposits are based on discounted cash flow analyses using interest rates currently being offered on similar transactions which are considered Significant Unobservable Inputs. Estimated fair value of deposits with no stated maturity, which includes demand deposits, transaction deposits, money market deposits and savings accounts, is equal to the amount payable on demand. Although market premiums paid reflect an additional value for these low cost deposits, adjusting fair value for the expected benefit of these deposits is prohibited. Accordingly, the positive effect of such deposits is not included in the tables above.
 
Other Borrowings and Subordinated Debentures
 
The fair values of these instruments are based upon discounted cash flow analyses using interest rates currently being offered on similar instruments which are considered Significant Unobservable Inputs

Off-Balance Sheet Instruments
 
The fair values of commercial loan commitments are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements. The fair values of these off-balance sheet instruments were not significant at June 30, 2013, December 31, 2012 or June 30, 2012.
Fair Value Election

As more fully disclosed in Note 2 and Note 5 to the Consolidated Financial Statements, the Company has elected to carry all residential mortgage-backed securities which have been designated as economic hedges against changes in the fair value of mortgage servicing rights, certain corporate debt securities economically hedged by derivative contracts to manage interest rate risk and all residential mortgage loans originated for sale at fair value. Changes in the fair value of these financial instruments are recognized in earnings.
Federal and State Income Taxes
Federal and State Income Taxes
(12) Federal and State Income Taxes

The reconciliations of income (loss) attributable to continuing operations at the U.S. federal statutory tax rate to income tax expense are as follows (in thousands):
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2013
 
2012
 
2013
 
2012
Amount:
 
 
 
 
 
 
 
 
Federal statutory tax
 
$
42,459

 
$
53,414

 
$
90,113

 
$
98,463

Tax exempt revenue
 
(1,803
)
 
(1,334
)
 
(3,545
)
 
(2,598
)
Effect of state income taxes, net of federal benefit
 
3,122

 
3,572

 
6,500

 
6,570

Utilization of tax credits
 
(1,826
)
 
(1,467
)
 
(3,548
)
 
(2,564
)
Bank-owned life insurance
 
(993
)
 
(976
)
 
(1,878
)
 
(1,955
)
Other, net
 
464

 
(60
)
 
877

 
753

Total
 
$
41,423

 
$
53,149

 
$
88,519

 
$
98,669


 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2013
 
2012
 
2013
 
2012
Percent of pretax income:
 
 
 
 
 
 
 
 
Federal statutory tax
 
35
 %
 
35
 %
 
35
 %
 
35
 %
Tax exempt revenue
 
(1
)
 
(1
)
 
(1
)
 
(1
)
Effect of state income taxes, net of federal benefit
 
3

 
3

 
2

 
2

Utilization of tax credits
 
(2
)
 
(1
)
 
(1
)
 
(1
)
Bank-owned life insurance
 
(1
)
 
(1
)
 
(1
)
 
(1
)
Other, net
 
—

 
—

 
—

 
1

Total
 
34
 %
 
35
 %
 
34
 %
 
35
 %
Subsequent Events
Subsequent Events
(13) Subsequent Events

The Company evaluated events from the date of the consolidated financial statements on June 30, 2013 through the issuance of those consolidated financial statements included in this Quarterly Report on Form 10-Q. No events were identified requiring recognition in and/or disclosure in the consolidated financial statements.
Significant Accounting Policies (Policies)
Principles of Consolidation [Policy Text Block] 
The unaudited consolidated financial statements include accounts of BOK Financial and its subsidiaries, principally BOKF, NA (“the Bank”), BOSC, Inc., The Milestone Group, Inc. and Cavanal Hill Investment Management Inc. Operating divisions of the Bank include Bank of Albuquerque, Bank of Arizona, Bank of Arkansas, Bank of Oklahoma, Bank of Texas, Colorado State Bank and Trust, Bank of Kansas City, BOK Financial Mortgage and the TransFund electronic funds network.

Reclassification, Policy [Policy Text Block] 
Certain reclassifications have been made to conform to the current period presentation.
Newly Adopted and Pending Accounting Policies [Policy Text Block] 
Newly Adopted and Pending Accounting Policies

Financial Accounting Standards Board (“FASB”)

FASB Accounting Standards Update No. 2011-11, Disclosures about Offsetting Assets and Liabilities (“ASU 2011-11”)

On December 16, 2011, the FASB issued ASU 2011-11 which contains new disclosure requirements regarding the nature of an entity right of setoff and related arrangements associated with its financial instruments and derivative instruments. The new disclosures are anticipated to facilitate comparison between financial statements prepared under generally accepted accounting principles in the United States of America and financial statements prepared under International Financial Reporting Standards by providing information about gross and net exposures. The new disclosure requirements were effective for the Company for interim and annual reporting period beginning January 1, 2013.

FASB Accounting Standards Update No. 2013-01, Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities (ASU 2013-01)

On January 31, 2013, FASB issued ASU 2013-01 which clarified the scope of ASU 2011-11 applied for derivative contracts accounted for in accordance with Topic 815, Derivatives and Hedging, including bifurcated embedded derivatives, repurchase agreements and reverse repurchase agreements and securities borrowing and lending transactions that are either offset in accordance with Section 210-20-45 or Section 815-10-45 or subject to an enforceable master netting arrangement or similar agreement. ASU 2013-01 was effective for the Company on January 1, 2013.

FASB Accounting Standards Update No. 2013-02, Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income ("ASU 2013-02")

On February 7, 2013 the FASB issued ASU 2013-02 which sets the requirements for presentation significant reclassifications out of accumulated other comprehensive income for both items reclassified in their entirety and the respective line items in Statement of Earnings they are being reclassified into and for other amounts that are not reclassified in their entirety to net income during the reporting period, such as items being reclassified to a balance sheet accounts. ASU 2013-02 was effective for the Company on January 1, 2013 and is to be applied prospectively.
Derivatives, Policy [Policy Text Block] 
Derivative instruments may be used by the Company as part of its interest rate risk management programs or may be offered to customers. All derivative instruments are carried at fair value and changes in fair value are reported in earnings as they occur. Credit risk is also considered in determining fair value.

When bilateral netting agreements or similar arrangements exist between the Company and its counterparties that create a single legal claim or obligation to pay or receive the net amount in settlement of the individual derivative contracts, the Company reports derivative assets and liabilities on a net by derivative contract type by counterparty basis.

Derivative contracts may require the Company to provide or receive cash margin as collateral for derivative assets and liabilities. Derivative assets and liabilities are reported net of cash margin when certain conditions are met. In addition, derivative contacts executed with customers under Customer Risk Management Programs may be secured by non-cash collateral in conjunction with a credit agreement with that customer. Access to collateral, in the event of default is reasonably assured. As of June 30, 2013, a decrease in BOK Financial's credit rating to below investment grade would increase our obligation to post cash margin on existing contracts by approximately $29 million.
 
None of these derivative contracts have been designated as hedging instruments.

Customer Risk Management Programs
 
BOK Financial offers programs to permit its customers to manage various risks, including fluctuations in energy, cattle and other agricultural products, and foreign exchange rates, or to take positions in derivative contracts. Customers may also manage interest rate risk through interest rate swaps used by borrowers to modify interest rate terms of their loans or to-be-announced securities used by mortgage banking customers to hedge their loan production. Derivative contracts are executed between the customers and BOK Financial. Offsetting contracts are executed between BOK Financial and other selected counterparties to minimize its risk of changes in commodity prices, interest rates or foreign exchange rates. The counterparty contracts are identical to customer contracts, except for a fixed pricing spread or fee paid to BOK Financial as profit and compensation for administrative costs and credit risk which is recognized over the life of the contracts and included in other operating revenue – brokerage and trading revenue in the Consolidated Statements of Earnings.
 
Interest Rate Risk Management Programs
 
BOK Financial may use derivative contracts in managing its interest rate sensitivity and as part of its economic hedge of the change in the fair value of mortgage servicing rights. Interest rate swaps are generally used to reduce overall asset sensitivity by converting specific fixed-rate liabilities to floating-rate based on LIBOR. As of June 30, 2013, BOK Financial had interest rate swaps with a notional value of $47 million used as part of the economic hedge of the change in the fair value of the mortgage servicing rights.

As discussed in Note 5, certain derivative contracts not designated as hedging instruments related to mortgage loan commitments and forward sales contracts are included in Residential mortgage loans held for sale on the Consolidated Balance Sheets. See Note 5 for additional discussion of notional, fair value and impact on earnings of these contracts. Forward sales contracts are not considered swaps under the Commodity and Futures Trading Commission final rules.

Loans and Allowances for Credit Losses, Loans [Policy Text Block] 
Loans

Loans are either secured or unsecured based on the type of loan and the financial condition of the borrower. Repayment is generally expected from cash flow or proceeds from the sale of selected assets of the borrower. BOK Financial is exposed to risk of loss on loans due to the borrower’s difficulties, which may arise from any number of factors, including problems within the respective industry or local economic conditions. Access to collateral, in the event of borrower default, is reasonably assured through adherence to applicable lending laws and through sound lending standards and credit review procedures. Accounting policies for all loans, excluding residential mortgage loans guaranteed by U.S. government agencies, are as follows.

Interest is accrued at the applicable interest rate on the principal amount outstanding. Loans are placed on nonaccruing status when, in the opinion of management, full collection of principal or interest is uncertain. Internally risk graded loans are individually evaluated for nonaccruing status quarterly. Non-risk graded loans are generally placed on nonaccruing status when more than 90 days past due or within 60 days of being notified of the borrower bankruptcy filing. Interest previously accrued but not collected is charged against interest income when the loan is placed on nonaccruing status. Payments on nonaccruing loans are applied to principal or recognized as interest income, according to management’s judgment as to the collectability of principal. Loans may be returned to accruing status when, in the opinion of management, full collection of principal and interest, including principal previously charged off, is probable based on improvements in the borrower’s financial condition or a sustained period of performance.

Loans to borrowers experiencing financial difficulties may be modified in troubled debt restructurings ("TDRs"). All TDRs are classified as nonaccruing. Modifications generally consist of extension of payment terms or interest rate concessions and may result either voluntarily through negotiations with the borrower or involuntarily through court order. Generally, principal and accrued but unpaid interest is not voluntarily forgiven.

Performing loans may be renewed under then current collateral value, debt service ratio and other underwriting standards. Nonaccruing loans may be renewed and will remain classified as nonaccruing. 

All loans are charged off when the loan balance or a portion of the loan balance is no longer supported by the paying capacity of the borrower or when the required cash flow is reduced in a TDR. The charge-off amount is determined through a quarterly evaluation of available cash resources and collateral value and charge-offs are taken in the quarter in which the loss is identified. Non-risk graded loans that are past due between 60 and 180 days, based on the loan product type, are charged off. Loans to borrowers whose personal obligation has been discharged through Chapter 7 bankruptcy proceedings are charged off within 60 days of notice of the bankruptcy filing, regardless of payment status.

Loan origination and commitment fees and direct loan acquisition and origination costs are deferred and amortized as an adjustment to yield over the life of the loan or over the commitment period, as applicable.

Qualifying residential mortgage loans guaranteed by U.S. government agencies have been sold into GNMA pools. Under certain performance conditions specified in government programs, the Company may have the right, but not the obligation to repurchase loans from GNMA pools. These loans no longer qualify for sale accounting and are recognized in the Consolidated Balance Sheet. Guaranteed loans are considered impaired because we do not expect to receive all principal and interest based on the loan's contractual terms. The principal balance continues to be guaranteed; however, interest accrues at a curtailed rate as specified in the programs. The carrying value of these loans is reduced based on an estimate of the expected cash flows discounted at the original note rate plus a liquidity spread. Guaranteed loans may be modified in TDRs in accordance with U.S. government agency guidelines. Interest continues to accrue based on the modified rate. Guaranteed loans may either be resold into GNMA pools after a performance period specified by the programs or foreclosed and conveyed to the guarantors.

Loans are disaggregated into portfolio segments and further disaggregated into classes. The portfolio segment is the level at which the Company develops and documents a systematic method for determining its allowance for credit losses. Classes are a further disaggregation of portfolio segments based on the risk characteristics of the loans and the Company’s method for monitoring and assessing credit risk.
Loans and Allowances for Credit Losses, Allowances for Credit Losses [Policy Text Block] 
Allowances for Credit Losses

BOK Financial maintains an allowance for loan losses and an accrual for off-balance sheet credit risk. The accrual for off-balance sheet credit risk is maintained at a level that is appropriate to cover estimated losses associated with credit instruments that are not currently recognized as assets such as loan commitments, standby letters of credit or guarantees. As discussed in greater detail in Note 5, the Company also has separate accruals for off-balance sheet credit risk related to residential mortgage loans previously sold with full or partial recourse and for residential mortgage loans sold to government sponsored agencies under standard representations and warranties.

The appropriateness of the allowance for loan losses and accrual for off-balance sheet credit losses (collectively "allowance for credit losses") is assessed by management based on an on-going quarterly evaluation of the probable estimated losses inherent in the portfolio, including probable losses on both outstanding loans and unused commitments.

The allowance for loan losses consists of specific allowances attributed to impaired loans that have not yet been charged down to amounts we expect to recover, general allowances for unimpaired loans based on estimated loss rates by loan class and nonspecific allowances based on general economic conditions, risk concentration and related factors. There have been no material changes in the approach or techniques utilized in developing the allowance for loan losses and the accrual for off-balance sheet credit losses for the three and six months ended June 30, 2013.

Loans are considered to be impaired when it becomes probable that BOK Financial will be unable to collect all amounts due according to the contractual terms of the loan agreements. Internally risk graded loans are evaluated individually for impairment. Substantially all commercial and commercial real estate loans and certain residential mortgage and consumer loans are risk graded based on evaluation of the borrowers' ability to repay. Certain commercial loans and most residential mortgage and consumer loans are small balance, homogeneous pools of loans that are not risk graded. Non-risk graded loans are identified as impaired based on performance status. Generally, non-risk graded loans 90 days or more past due or modified in a TDR or in bankruptcy are considered to be impaired.

Specific allowances for impaired loans are measured by an evaluation of estimated future cash flows discounted at the loans’ initial effective interest rate or the fair value of collateral for certain collateral dependent loans. Collateral value of real property is generally based on third party appraisals that conform to Uniform Standards of Professional Appraisal Practice, less estimated selling costs. Appraised values are on an "as-is" basis and are generally not adjusted by the Company. Updated appraisals are obtained at least annually or more frequently if market conditions indicate collateral values have declined. Collateral value of mineral rights is generally determined by our internal staff of engineers based on projected cash flows under current market conditions. Collateral values and available cash resources that support impaired loans are evaluated quarterly. Historical statistics may be used as a practical way to estimate impairment in limited situations, such as when a collateral dependent loan is identified as impaired at the end of a reporting period, until an updated appraisal of collateral value is received or a full assessment of future cash flows is completed. Estimates of future cash flows and collateral values require significant judgments and may be volatile.

General allowances for unimpaired loans are based on estimated loss rates by loan class. The gross loss rate for each loan class is determined by the greater of the current gross loss rate based on the most recent twelve months or a ten-year gross loss rate. Recoveries are not directly considered in the estimation of loss rates. Recoveries generally do not follow predictable patterns and are not received until well after the charge-off date as a result of protracted legal actions. For risk graded loans, gross loss rates are adjusted for changes in risk grading. For each loan class, the current weighted average risk grade is compared to the long-term average risk grade. This comparison determines whether credit risk in each loan class is increasing or decreasing. Loss rates are adjusted upward or downward in proportion to changes in average risk grading. General allowances for unimpaired loans also consider inherent risks identified for each loan class. Inherent risks consider loss rates that most appropriately represent the current credit cycle and other factors attributable to specific loan classes which have not yet been represented in the gross loss rates or risk grading. These factors include changes in commodity prices or engineering imprecision, which may affect the value of reserves that secure our energy loan portfolio, construction risk that may affect commercial real estate loans, changes in regulations and public policy that may disproportionately impact health care loans and changes in loans products.

Nonspecific allowances are maintained for risks beyond factors specific to a particular loan or loan class. These factors include trends in the economy of our primary lending areas, concentrations in large balance loans and other relevant factors.

An accrual for off-balance sheet credit losses is included in Other liabilities in the Consolidated Balance Sheets. The appropriateness of this accrual is determined in the same manner as the allowance for loan losses.

A provision for credit losses is charged against or credited to earnings in amounts necessary to maintain an appropriate allowance for credit losses. Recoveries of loans previously charged off are added to the allowance when received.
Securities (Tables)
Trading Securities [Table Text Block] 
The fair value and net unrealized gain (loss) included in trading securities is as follows (in thousands):
 
 
 
June 30, 2013
 
December 31, 2012
 
June 30, 2012
 
 
Fair Value
 
Net Unrealized Gain (Loss)
 
Fair Value
 
Net Unrealized Gain (Loss)
 
Fair
Value
 
Net Unrealized Gain (Loss)
U.S. Government agency debentures
 
$
60,713

 
$
(552
)
 
$
16,545

 
$
(57
)
 
$
53,514

 
$
23

U.S. agency residential mortgage-backed securities
 
43,858

 
38

 
86,361

 
447

 
46,502

 
222

Municipal and other tax-exempt securities
 
53,819

 
(1,271
)
 
90,326

 
(226
)
 
44,632

 
9

Other trading securities
 
32,201

 
(717
)
 
20,870

 
(13
)
 
4,669

 
(14
)
Total
 
$
190,591

 
$
(2,502
)
 
$
214,102

 
$
151

 
$
149,317

 
$
240

Investment Securities (Held-to-Maturity) [Table Text Block] 
The amortized cost and fair values of investment securities are as follows (in thousands):

 
 
June 30, 2013
 
 
Amortized
 
Carrying
 
Fair
 
Gross Unrealized2
 
 
Cost
 
Value1
 
Value
 
Gain
 
Loss
Municipal and other tax-exempt
 
$
375,317

 
$
375,317

 
$
371,690

 
$
2,189

 
$
(5,816
)
U.S. agency residential mortgage-backed securities – Other
 
61,152

 
64,172

 
66,796

 
2,624

 
—

Other debt securities
 
176,301

 
176,301

 
187,219

 
10,978

 
(60
)
Total
 
$
612,770

 
$
615,790

 
$
625,705

 
$
15,791

 
$
(5,876
)
1 
Carrying value includes $3.0 million of net unrealized gain which remains in Accumulated other comprehensive income (“AOCI”) related to certain securities transferred from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following.
2 
Gross unrealized gains and losses are not recognized in AOCI in the Consolidated Balance Sheets.
 
 
December 31, 2012
 
 
Amortized
 
Carrying
 
Fair
 
Gross Unrealized2
 
 
Cost
 
Value1
 
Value
 
Gain
 
Loss
Municipal and other tax-exempt
 
$
232,700

 
$
232,700

 
$
235,940

 
$
3,723

 
$
(483
)
U.S. agency residential mortgage-backed securities – Other
 
77,726

 
82,767

 
85,943

 
3,176

 
—

Other debt securities
 
184,067

 
184,067

 
206,575

 
22,528

 
(20
)
Total
 
$
494,493

 
$
499,534

 
$
528,458

 
$
29,427

 
$
(503
)
1 
Carrying value includes $5.0 million of net unrealized gain which remains in Accumulated other comprehensive income (“AOCI”) in the Consolidated Balance Sheets related to certain securities transferred from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following.
2 
Gross unrealized gains and losses are not recognized in AOCI in the Consolidated Balance Sheets.
 
 
June 30, 2012
 
 
Amortized
 
Carrying
 
Fair
 
Gross Unrealized2
 
 
Cost
 
Value1
 
Value
 
Gain
 
Loss
Municipal and other tax-exempt
 
$
126,168

 
$
126,168

 
$
130,308

 
$
4,165

 
$
(25
)
U.S. agency residential mortgage-backed securities – Other
 
94,126

 
102,347

 
105,535

 
3,188

 
—

Other debt securities
 
183,964

 
183,964

 
204,795

 
20,831

 
—

Total
 
$
404,258

 
$
412,479

 
$
440,638

 
$
28,184

 
$
(25
)

1 
Carrying value includes $8.2 million of net unrealized gain which remains in Accumulated other comprehensive income (“AOCI”) in the Consolidated Balance Sheets related to certain securities transferred from the Available for Sale securities portfolio to the Investment securities portfolio as discussed in greater detail following.
2 
Gross unrealized gains and losses are not recognized in AOCI in the Consolidated Balance Sheets.

During the three months ended September 30, 2011, the Company transferred certain U.S. government agency residential mortgage-backed securities from the available for sale portfolio to the investment securities (held-to-maturity) portfolio as the Company has the positive intent and ability to hold these securities to maturity. No gains or losses were recognized in the Consolidated Statement of Earnings at the time of the transfer. Transfers of debt securities into the investment securities portfolio (held-to-maturity) are made at fair value at the date of transfer. The unrealized holding gain or loss at the date of transfer is retained in accumulated other comprehensive income and in the carrying value of the investment securities portfolio.  Such amounts are amortized over the estimated remaining life of the security as an adjustment to yield, offsetting the related amortization of the premium or accretion of the discount on the transferred securities. At the time of transfer, the fair value totaled $131 million, amortized cost totaled $118 million and the pretax unrealized gain totaled $13 million.

The amortized cost and fair values of investment securities at June 30, 2013, by contractual maturity, are as shown in the following table (dollars in thousands):
 
 
Less than
One Year
 
One to
Five Years
 
Six to
Ten Years
 
Over
Ten Years
 
Total
 
Weighted
Average
Maturity²
Municipal and other tax-exempt:
 
 
 
 
 
 
 
 
 
 
 
 
Carrying value
 
$
24,239

 
$
239,869

 
$
101,753

 
$
9,456

 
$
375,317

 
4.15

Fair value
 
24,504

 
238,125

 
99,465

 
9,596

 
371,690

 
 
Nominal yield¹
 
4.22

 
1.68

 
2.21

 
2.73

 
2.01

 
 
Other debt securities:
 
 

 
 

 
 

 
 

 
 

 
 
Carrying value
 
9,681

 
30,987

 
35,164

 
100,469

 
176,301

 
9.06

Fair value
 
9,713

 
31,420

 
36,257

 
109,829

 
187,219

 
 
Nominal yield
 
4.24

 
5.30

 
5.57

 
6.29

 
5.86

 
 
Total fixed maturity securities:
 
 

 
 

 
 

 
 

 
 

 
 
Carrying value
 
$
33,920

 
$
270,856

 
$
136,917

 
$
109,925

 
$
551,618

 
5.72

Fair value
 
34,217

 
269,545

 
135,722

 
119,425

 
558,909

 
 

Nominal yield
 
4.22

 
2.09

 
3.07

 
5.99

 
3.24

 
 

Residential mortgage-backed securities:
 
 

 
 

 
 

 
 

 
 

 
 

Carrying value
 
 

 
 

 
 

 
 

 
$
64,172

 
³

Fair value
 
 

 
 

 
 

 
 

 
66,796

 
 

Nominal yield4
 
 

 
 

 
 

 
 

 
2.72

 
 

Total investment securities:
 
 

 
 

 
 

 
 

 
 

 
 

Carrying value
 
 

 
 

 
 

 
 

 
$
615,790

 
 

Fair value
 
 

 
 

 
 

 
 

 
625,705

 
 

Nominal yield
 
 

 
 

 
 

 
 

 
3.19

 
 

1 
Calculated on a taxable equivalent basis using a 39% effective tax rate.
2 
Expected maturities may differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without penalty.
3 
The average expected lives of residential mortgage-backed securities were 4.1 years based upon current prepayment assumptions.
4 
The nominal yield on residential mortgage-backed securities is based upon prepayment assumptions at the purchase date. Actual yields earned may differ significantly based upon actual prepayments. See Quarterly Financial Summary - Unaudited for current yields on the investment securities portfolio.
Available For Sale Securities [Table Text Block] 
The amortized cost and fair value of available for sale securities are as follows (in thousands):
 
 
June 30, 2013
 
 
Amortized
 
Fair
 
Gross Unrealized1
 
 
 
 
Cost
 
Value
 
Gain
 
Loss
 
OTTI²
U.S. Treasury
 
$
1,061

 
$
1,060

 
$
—

 
$
(1
)
 
$
—

Municipal and other tax-exempt
 
95,974

 
95,103

 
1,653

 
(1,870
)
 
(654
)
Residential mortgage-backed securities:
 
 

 
 

 
 

 
 

 
 

U. S. government agencies:
 
 

 
 

 
 

 
 

 
 

FNMA
 
4,648,337

 
4,687,141

 
78,285

 
(39,481
)
 
—

FHLMC
 
2,695,506

 
2,715,896

 
32,994

 
(12,604
)
 
—

GNMA
 
916,646

 
925,081

 
11,163

 
(2,728
)
 
—

Other
 
42,563

 
44,677

 
2,114

 
—

 
—

Total U.S. government agencies
 
8,303,052

 
8,372,795

 
124,556

 
(54,813
)
 
—

Private issue:
 
 

 
 

 
 

 
 

 
 

Alt-A loans
 
113,804

 
115,036

 
2,905

 
—

 
(1,673
)
Jumbo-A loans
 
178,581

 
182,139

 
4,129

 
(274
)
 
(297
)
Total private issue
 
292,385

 
297,175

 
7,034

 
(274
)
 
(1,970
)
Total residential mortgage-backed securities
 
8,595,437

 
8,669,970

 
131,590

 
(55,087
)
 
(1,970
)
Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
1,885,585

 
1,846,943

 
343

 
(38,985
)
 
—

Other debt securities
 
35,622

 
35,894

 
479

 
(207
)
 
—

Perpetual preferred stock
 
22,172

 
25,583

 
3,439

 
(28
)
 
—

Equity securities and mutual funds
 
19,990

 
23,521

 
3,736

 
(205
)
 
—

Total
 
$
10,655,841

 
$
10,698,074

 
$
141,240

 
$
(96,383
)
 
$
(2,624
)
1 Gross unrealized gain/loss recognized in AOCI in the consolidated balance sheet.
2 Amounts represent unrealized loss that remains in AOCI after an other-than-temporary credit loss has been recognized in income.
 
 
December 31, 2012
 
 
Amortized
 
Fair
 
Gross Unrealized¹
 
 
 
 
Cost
 
Value
 
Gain
 
Loss
 
OTTI²
U.S. Treasury
 
$
1,000

 
$
1,002

 
$
2

 
$
—

 
$
—

Municipal and other tax-exempt
 
84,892

 
87,142

 
2,414

 
(164
)
 
—

Residential mortgage-backed securities:
 
 
 
 

 
 

 
 

 
 

U. S. government agencies:
 
 

 
 

 
 

 
 

 
 

FNMA
 
5,308,463

 
5,453,549

 
146,247

 
(1,161
)
 
—

FHLMC
 
2,978,608

 
3,045,564

 
66,956

 
—

 
—

GNMA
 
1,215,554

 
1,237,041

 
21,487

 
—

 
—

Other
 
148,025

 
153,667

 
5,642

 
—

 
—

Total U.S. government agencies
 
9,650,650

 
9,889,821

 
240,332

 
(1,161
)
 
—

Private issue:
 
 

 
 

 
 

 
 

 
 

Alt-A loans
 
124,314

 
123,174

 
1,440

 
—

 
(2,580
)
Jumbo-A loans
 
198,588

 
201,989

 
5,138

 
(134
)
 
(1,603
)
Total private issue
 
322,902

 
325,163

 
6,578

 
(134
)
 
(4,183
)
Total residential mortgage-backed securities
 
9,973,552

 
10,214,984

 
246,910

 
(1,295
)
 
(4,183
)
Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
890,746

 
895,075

 
5,006

 
(677
)
 
—

Other debt securities
 
35,680

 
36,389

 
709

 
—

 
—

Perpetual preferred stock
 
22,171

 
25,072

 
2,901

 
—

 
—

Equity securities and mutual funds
 
24,593

 
27,557

 
3,242

 
(278
)
 
—

Total
 
$
11,032,634

 
$
11,287,221

 
$
261,184

 
$
(2,414
)
 
$
(4,183
)
1 Gross unrealized gain/loss recognized in AOCI in the consolidated balance sheet.
2 Amounts represent unrealized loss that remains in AOCI after an other-than-temporary credit loss has been recognized in income.

 
 
June 30, 2012
 
 
Amortized
 
Fair
 
Gross Unrealized1
 
 
 
 
Cost
 
Value
 
Gain
 
Loss
 
OTTI²
U.S. Treasury
 
$
1,001

 
$
1,003

 
$
2

 
$
—

 
$
—

Municipal and other tax-exempt
 
86,808

 
88,458

 
2,430

 
(187
)
 
(593
)
Residential mortgage-backed securities:
 


 


 


 


 


U. S. government agencies:
 
 

 
 

 
 

 
 

 
 

FNMA
 
5,270,918

 
5,426,832

 
156,699

 
(785
)
 
—

FHLMC
 
3,527,123

 
3,607,060

 
81,679

 
(1,742
)
 
—

GNMA
 
645,103

 
674,006

 
28,973

 
(70
)
 
—

Other
 
188,831

 
195,634

 
6,803

 
—

 
—

Total U.S. government agencies
 
9,631,975

 
9,903,532

 
274,154

 
(2,597
)
 
—

Private issue:
 
 

 
 

 
 

 
 

 
 

Alt-A loans
 
134,266

 
118,414

 
—

 
—

 
(15,852
)
Jumbo-A loans
 
219,917

 
199,347

 
618

 
(943
)
 
(20,245
)
Total private issue
 
354,183

 
317,761

 
618

 
(943
)
 
(36,097
)
Total residential mortgage-backed securities
 
9,986,158

 
10,221,293

 
274,772

 
(3,540
)
 
(36,097
)
Other debt securities
 
35,739

 
36,286

 
559

 
(12
)
 
—

Perpetual preferred stock
 
22,171

 
23,431

 
1,812

 
(552
)
 
—

Equity securities and mutual funds
 
21,285

 
24,944

 
3,989

 
(330
)
 
—

Total
 
$
10,153,162

 
$
10,395,415

 
$
283,564

 
$
(4,621
)
 
$
(36,690
)
1 
Gross unrealized gain/loss recognized in AOCI in the consolidated balance sheet
2 
Amounts represent unrealized loss that remains in AOCI after an other-than-temporary credit loss has been recognized in income.

The amortized cost and fair values of available for sale securities at June 30, 2013, by contractual maturity, are as shown in the following table (dollars in thousands):
 
Less than
One Year
 
One to
Five Years
 
Six to
Ten Years
 
Over
Ten Years
 
Total
 
Weighted
Average
Maturity5
U.S. Treasuries:
 
 
 
 
 
 
 
 
 
 
 
Amortized cost
$
1,061

 
$
—

 
$
—

 
$
—

 
$
1,061

 
1.68

Fair value
1,060

 
—

 
—

 
—

 
1,060

 
 
Nominal yield
0.24

 
—

 
—

 
—

 
0.24

 
 
Municipal and other tax-exempt:
 

 
 

 
 

 
 

 
 
 
 
Amortized cost
1,684

 
33,591

 
6,382

 
54,317

 
95,974

 
14.84

Fair value
1,705

 
34,777

 
6,621

 
52,000

 
95,103

 
 
Nominal yield¹
—

 
0.95

 
0.69

 
2.55

6 
1.82

 
 
Commercial mortgage-backed securities:
 
 
 
 
 
 
 
 
 
 
 
Amortized cost
—

 
414,587

 
1,150,171

 
320,827

 
1,885,585

 
10.74

Fair value
—

 
409,069

 
1,121,016

 
316,858

 
1,846,943

 
 
Nominal yield
—

 
1.08

 
1.34

 
1.35

 
1.28

 
 
Other debt securities:
 

 
 

 
 

 
 

 
 
 
 
Amortized cost
—

 
30,222

 
—

 
5,400

 
35,622

 
5.98

Fair value
—

 
30,701

 
—

 
5,193

 
35,894

 
 
Nominal yield
—

 
1.80

 
—

 
1.41

6 
1.74

 
 
Total fixed maturity securities:
 

 
 

 
 

 
 

 
 
 
 
Amortized cost
$
2,745

 
$
478,400

 
$
1,156,553

 
$
380,544

 
$
2,018,242

 
10.84

Fair value
2,765

 
474,547

 
1,127,637

 
374,051

 
1,979,000

 
 
Nominal yield
0.09

 
1.12

 
1.33

 
1.52

 
1.32

 
 
Residential mortgage-backed securities:
 

 
 

 
 

 
 

 
 
 
 
Amortized cost
 

 
 

 
 

 
 

 
8,595,437

 
2 

Fair value
 

 
 

 
 

 
 

 
8,669,970

 
 
Nominal yield4
 

 
 

 
 

 
 

 
1.97

 
 
Equity securities and mutual funds:
 

 
 

 
 

 
 

 
 

 
 

Amortized cost
 

 
 

 
 

 
 

 
42,162

 
³

Fair value
 

 
 

 
 

 
 

 
49,104

 
 

Nominal yield
 

 
 

 
 

 
 

 
1.30

 
 

Total available-for-sale securities:
 

 
 

 
 

 
 

 
 
 
 

Amortized cost
 

 
 

 
 

 
 

 
$
10,655,841

 
 

Fair value
 

 
 

 
 

 
 

 
10,698,074

 
 

Nominal yield
 

 
 

 
 

 
 

 
1.85

 
 

1 
Calculated on a taxable equivalent basis using a 39% effective tax rate.
2 
The average expected lives of mortgage-backed securities were 3.5 based upon current prepayment assumptions.
3 
Primarily common stock and preferred stock of corporate issuers with no stated maturity.
4 
The nominal yield on mortgage-backed securities is based upon prepayment assumptions at the purchase date. Actual yields earned may differ significantly based upon actual prepayments. See Quarterly Financial Summary –– Unaudited following for current yields on available for sale securities portfolio.
5 
Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalty.
6 
Nominal yield on municipal and other tax-exempt securities and other debt securities with contractual maturity dates over ten years are based on variable rates which generally are reset within 35 days.

Sales of available for sale securities resulted in gains and losses as follows (in thousands):
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2013
 
2012
 
2013
 
2012
Proceeds
$
1,083,001

 
$
459,610

 
$
1,837,970

 
$
1,451,551

Gross realized gains
9,992

 
20,481

 
15,784

 
32,166

Gross realized losses
(6,239
)
 
—

 
(7,176
)
 
(7,354
)
Related federal and state income tax expense
1,460

 
7,967

 
3,349

 
9,652

Securities Pledged As Collateral [Table Text Block] 
 
June 30, 2013
 
December 31, 2012
 
June 30, 2012
Investment:
 
 
 
 
 
Carrying value
$
97,286

 
$
117,346

 
$
156,852

Fair value
100,644

 
121,647

 
162,391

 
 
 
 
 
 
Available for sale:
 
 
 
 
 
Amortized cost
5,078,098

 
4,070,250

 
3,552,776

Fair value
5,103,507

 
4,186,390

 
3,686,838

Schedule of Unrealized Loss on Investments [Table Text Block] 
.

Temporarily Impaired Securities as of June 30, 2013
(in thousands):

 
 
Number of Securities
 
Less Than 12 Months
 
12 Months or Longer
 
Total
 
 
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
Investment:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax-exempt
 
149

 
$
271,897

 
$
5,816

 
$
—

 
$
—

 
$
271,897

 
$
5,816

U.S. Agency residential mortgage-backed securities – Other
 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other debt securities
 
14

 
841

 
60

 
—

 
—

 
841

 
60

Total investment
 
163

 
$
272,738

 
$
5,876

 
$
—

 
$
—

 
$
272,738

 
$
5,876

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for sale:
 
 

 
 

 
 

 
 

 
 

 
 

 
 

U.S. Treasury
 
1

 
$
1,060

 
$
1

 
$
—

 
$
—

 
$
1,060

 
$
1

Municipal and other tax-exempt1
 
86

 
$
66,168

 
$
2,524

 
$
—

 
$
—

 
$
66,168

 
$
2,524

Residential mortgage-backed securities:
 
 
 
 

 
 

 
 

 
 

 


 


U. S. agencies:
 
 
 
 

 
 

 
 

 
 

 


 


FNMA
 
72

 
2,196,603

 
39,481

 
—

 
—

 
2,196,603

 
39,481

FHLMC
 
38

 
1,202,545

 
12,604

 
—

 
—

 
1,202,545

 
12,604

GNMA
 
13

 
197,149

 
2,728

 
—

 
—

 
197,149

 
2,728

Total U.S. agencies
 
123

 
3,596,297

 
54,813

 
—

 
—

 
3,596,297

 
54,813

Private issue1:
 
 

 
 

 
 

 
 

 
 

 


 


Alt-A loans
 
10

 
51,681

 
1,236

 
3,379

 
437

 
55,060

 
1,673

Jumbo-A loans
 
2

 
17,615

 
296

 
12,298

 
275

 
29,913

 
571

Total private issue
 
12

 
69,296

 
1,532

 
15,677

 
712

 
84,973

 
2,244

Total residential mortgage-backed securities
 
135

 
3,665,593

 
56,345

 
15,677

 
712

 
3,681,270

 
57,057

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
113

 
1,730,306

 
38,985

 
—

 
—

 
1,730,306

 
38,985

Other debt securities
 
4

 
5,193

 
207

 
—

 
—

 
5,193

 
207

Perpetual preferred stocks
 
1

 
4,973

 
28

 
—

 
—

 
4,973

 
28

Equity securities and mutual   funds
 
7

 
3,558

 
205

 
—

 
—

 
3,558

 
205

Total available for sale
 
347

 
$
5,476,851

$
—

$
98,295

$
—

$
15,677

$
—

$
712

$
—

$
5,492,528

$
—

$
99,007

1Includes the following securities for which an unrealized loss remains in AOCI after an other-than-temporary credit loss has been recognized in income:
Municipal and other tax-exempt
 
21

 
$
11,731

 
$
654

 
$
—

 
$
—

 
$
11,731

 
$
654

Alt-A loans
 
10

 
51,681

 
1,236

 
3,379

 
437

 
55,060

 
1,673

Jumbo-A loans
 
2

 
17,615

 
296

 
—

 
—

 
17,615

 
296


Temporarily Impaired Securities as of December 31, 2012
(In thousands)

 
 
Number of Securities
 
Less Than 12 Months
 
12 Months or Longer
 
Total
 
 
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
Investment:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax- exempt
 
53

 
$
92,768

 
$
483

 
$
—

 
$
—

 
$
92,768

 
$
483

U.S. Agency residential mortgage-backed securities – Other
 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other debt securities
 
14

 
881

 
20

 
—

 
—

 
881

 
20

Total investment
 
67

 
$
93,649

 
$
503

 
$
—

 
$
—

 
$
93,649

 
$
503

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for sale:
 
 

 
 

 
 

 
 

 
 

 


 


Municipal and other tax-exempt
 
38

 
$
6,150

 
$
11

 
$
26,108

 
$
153

 
$
32,258

 
$
164

Residential mortgage-backed securities:
 
 

 
 

 
 

 
 

 
 

 


 


U. S. agencies:
 
 

 
 

 
 

 
 

 
 

 


 


FNMA
 
12

 
161,828

 
1,161

 
—

 
—

 
161,828

 
1,161

FHLMC
 
—

 
—

 
—

 
—

 
—

 
—

 
—

GNMA
 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total U.S. agencies
 
12

 
161,828

 
1,161

 
—

 
—

 
161,828

 
1,161

Private issue1:
 
 

 
 

 
 

 
 

 
 

 


 


Alt-A loans
 
12

 
—

 
—

 
87,907

 
2,580

 
87,907

 
2,580

Jumbo-A loans
 
11

 
—

 
—

 
43,252

 
1,737

 
43,252

 
1,737

Total private issue
 
23

 
—

 
—

 
131,159

 
4,317

 
131,159

 
4,317

Total residential mortgage-backed securities
 
35

 
161,828

 
1,161

 
131,159

 
4,317

 
292,987

 
5,478

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
8

 
275,065

 
677

 
—

 
—

 
275,065

 
677

Other debt securities
 
3

 
4,899

 
—

 
—

 
—

 
4,899

 
—

Perpetual preferred stocks
 
—

 
—

 
—

 
—

 
—

 
—

 
—

Equity securities and mutual funds
 
22

 
202

 
1

 
2,161

 
277

 
2,363

 
278

Total available for sale
 
106

 
$
448,144

 
$
1,850

 
$
159,428

 
$
4,747

 
$
607,572

 
$
6,597

1 
Includes the following securities for which an unrealized loss remains in AOCI after an other-than-temporary credit loss has been recognized in income:
Alt-A loans
 
12

 
$
—

 
$
—

 
$
87,907

 
$
2,580

 
$
87,907

 
$
2,580

Jumbo-A loans
 
10

 
—

 
—

 
29,128

 
1,602

 
29,128

 
1,602


Temporarily Impaired Securities as of June 30, 2012
(In thousands)

 
 
Number of Securities
 
Less Than 12 Months
 
12 Months or Longer
 
Total
 
 
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
 
Fair
Value
 
Unrealized
Loss
Investment:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax- exempt
 
6

 
$
9,321

 
$
25

 
$
—

 
$
—

 
$
9,321

 
$
25

U.S. Agency residential mortgage-backed securities – Other
 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other debt securities
 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total investment
 
6

 
$
9,321

 
$
25

 
$
—

 
$
—

 
$
9,321

 
$
25

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for sale:
 
 

 
 

 
 

 
 

 
 

 


 


Municipal and other tax-exempt1
 
66

 
$
21,950

 
$
640

 
$
27,864

 
$
140

 
$
49,814

 
$
780

Residential mortgage-backed securities:
 
 

 
 

 
 

 
 

 
 

 


 


U. S. agencies:
 
 

 
 

 
 

 
 

 
 

 


 


FNMA
 
13

 
528,649

 
785

 
—

 
—

 
528,649

 
785

FHLMC
 
10

 
438,190

 
1,742

 
—

 
—

 
438,190

 
1,742

GNMA
 
2

 
74,789

 
70

 
—

 
—

 
74,789

 
70

Total U.S. agencies
 
25

 
1,041,628

 
2,597

 
—

 
—

 
1,041,628

 
2,597

Private issue1:
 
 

 
 

 
 

 
 

 
 

 


 


Alt-A loans
 
16

 
—

 
—

 
118,414

 
15,852

 
118,414

 
15,852

Jumbo-A loans
 
27

 
—

 
—

 
174,234

 
21,188

 
174,234

 
21,188

Total private issue
 
43

 
—

 
—

 
292,648

 
37,040

 
292,648

 
37,040

Total residential mortgage-backed securities
 
68

 
1,041,628

 
2,597

 
292,648

 
37,040

 
1,334,276

 
39,637

Other debt securities
 
2

 
—

 
—

 
988

 
12

 
988

 
12

Perpetual preferred stocks
 
5

 
10,717

 
552

 
—

 
—

 
10,717

 
552

Equity securities and mutual funds
 
12

 
2,579

 
330

 
—

 
—

 
2,579

 
330

Total available for sale
 
153

 
$
1,076,874

 
$
4,119

 
$
321,500

 
$
37,192

 
$
1,398,374

 
$
41,311

1 
Includes the following securities for which an unrealized loss remains in AOCI after an other-than-temporary credit loss has been recognized in income:
Municipal and other tax-exempt
 
21

 
12,804

 
593

 
—

 
—

 
12,804

 
593

Alt-A loans
 
16

 
—

 
—

 
118,414

 
15,852

 
118,414

 
15,852

Jumbo-A loans
 
27

 
—

 
—

 
162,754

 
20,245

 
162,754

 
20,245



On a quart
Investments by Lowest Credit Rating [Table Text Block] 
At June 30, 2013, the composition of the Company’s investment and available for sale securities portfolios by the lowest current credit rating assigned by any of the three nationally-recognized rating agencies is as follows (in thousands):
 
 
 
U.S. Govt / GSE 1
 

AAA - AA
 
 
A - BBB
 
 
Below Investment Grade
 
 
Not Rated
 
 
Total
 
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
Investment:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax-exempt
 
$
—

 
$
—

 
$
271,541

 
$
266,827

 
$
24,565

 
$
24,834

 
$
—

 
$
—

 
$
79,211

 
$
80,029

 
$
375,317

 
$
371,690

Mortgage-backed securities -- other
 
64,172

 
66,796

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
64,172

 
66,796

Other debt securities
 
—

 
—

 
167,463

 
178,378

 
600

 
600

 
—

 
—

 
8,238

 
8,241

 
176,301

 
187,219

Total investment securities
 
$
64,172

 
$
66,796

 
$
439,004

 
$
445,205

 
$
25,165

 
$
25,434

 
$
—

 
$
—

 
$
87,449

 
$
88,270

 
$
615,790

 
$
625,705

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Govt / GSE 1
 
AAA - AA
 
 
A - BBB
 
Below Investment Grade
 
Not Rated
 
Total
 
 
Amortized Cost
 
Fair
Value
 
Amortized Cost
 
Fair Value
 
Amortized Cost
 
Fair Value
 
Amortized Cost
 
Fair Value
 
Amortized Cost
 
Fair Value
 
Amortized Cost
 
Fair
Value
Available for Sale:
 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

U.S. Treasury
 
$
1,061

 
$
1,060

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
1,061

 
$
1,060

Municipal and other tax-exempt
 
—

 
—

 
60,895

 
61,295

 
22,695

 
22,077

 
12,384

 
11,731

 
—

 
—

 
95,974

 
95,103

Residential mortgage-backed securities:
 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 


 


U. S. government agencies:
 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 


 


FNMA
 
4,648,337

 
4,687,141

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
4,648,337

 
4,687,141

FHLMC
 
2,695,506

 
2,715,896

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
2,695,506

 
2,715,896

GNMA
 
916,646

 
925,081

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
916,646

 
925,081

Other
 
42,563

 
44,677

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
42,563

 
44,677

Total U.S. government agencies
 
8,303,052

 
8,372,795

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
8,303,052

 
8,372,795

Private issue:
 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 


 


Alt-A loans
 
—

 
—

 
—

 
—

 
—

 
—

 
113,804

 
115,036

 
—

 
—

 
113,804

 
115,036

Jumbo-A loans
 
—

 
—

 
—

 
—

 
—

 
—

 
178,581

 
182,139

 
—

 
—

 
178,581

 
182,139

Total private issue
 
—

 
—

 
—

 
—

 
—

 
—

 
292,385

 
297,175

 
—

 
—

 
292,385

 
297,175

Total residential mortgage-backed securities
 
8,303,052

 
8,372,795

 
—

 
—

 
—

 
—

 
292,385

 
297,175

 
—

 
—

 
8,595,437

 
8,669,970

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
1,885,585

 
1,846,943

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
1,885,585

 
1,846,943

Other debt securities
 
—

 
—

 
5,400

 
5,193

 
30,222

 
30,701

 
—

 
—

 
—

 
—

 
35,622

 
35,894

Perpetual preferred stock
 
—

 
—

 
—

 
—

 
22,172

 
25,583

 
—

 
—

 
—

 
—

 
22,172

 
25,583

Equity securities and mutual funds
 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
19,990

 
23,521

 
19,990

 
23,521

Total available for sale securities
 
$
10,189,698

 
$
10,220,798

 
$
66,295

 
$
66,488

 
$
75,089

 
$
78,361

 
$
304,769

 
$
308,906

 
$
19,990

 
$
23,521

 
$
10,655,841

 
$
10,698,074

1 
U.S. government and government sponsored enterprises are not rated by the nationally-recognized rating agencies as these securities are guaranteed by agencies of the U.S. government or government-sponsored enterprises.
Schedule of Privately Issued Residential Mortgage-backed Securities [Table Text Block] 
 
 
 
 
 
 
 
 
Credit Losses Recognized
 
 
 
 
 
 
 
 
Three months ended
 
 
 
 
 
 
 
 
 
 
June 30, 2013
 
Life-to-date
 
 
Number of Securities
 
Amortized Cost
 
Fair Value
 
Number of
Securities
 
Amount
 
Number of Securities
 
Amount
Alt-A
 
16

 
$
113,804

 
$
115,036

 
1

 
$
552

 
16

 
$
48,986

Jumbo-A
 
33

 
178,581

 
182,139

 
—

 
—

 
31

 
23,452

Total
 
49

 
$
292,385

 
$
297,175

 
1

 
$
552

 
47

 
$
72,438

Other-than-temporary impairement, Private Lable Mortgage-Backed Securities, Assumptions Used to Develop Projected Cash Flows [Table Text Block] 
The primary assumptions used in this evaluation were:

 
June 30, 2013
 
December 31, 2012
 
6/30/2012
 
 
 
 
 
 
Unemployment rate
Increasing to 8% over the next 12 months and remain at 8% thereafter
 
Increasing to 8.5% over the next 12 months, dropping to 8% over the following 21 months and holding at 8% thereafter.
 
Increasing to 9.5% over the next 12 months, dropping to 8% over the following 21 months and holding at 8% thereafter.
Housing price appreciation/depreciation
Starting with current depreciated housing prices based on information derived from the FHFA1, appreciating 5% over the next 12 months, then flat for the following 12 months and then appreciating at 2% per year thereafter.
 
Starting with current depreciated housing prices based on information derived from the FHFA1, depreciating 2% over the next 12 months, then flat for the following 12 months and then appreciating at 2% per year thereafter.
 
Starting with current depreciated housing prices based on information derived from the FHFA1, depreciating 6% over the next 12 months and then appreciating at 2% per year thereafter.
Estimated liquidation costs
Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company.
 
Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company.
 
Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company.
Discount rates
Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields.
 
Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields.
 
Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields.
Rollforward Other-than-temporary Impairment Credit Losses Recognized in Earnings [Table Text Block] 
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2013
 
2012
 
2013
 
2012
Balance of credit-related OTTI recognized on available for sale debt, beginning of period
 
$
75,475

 
$
72,057

 
$
75,228

 
$
76,131

Additions for credit-related OTTI not previously recognized
 
552

 
135

 
552

 
248

Additions for increases in credit-related OTTI previously recognized when there is no intent to sell and no requirement to sell before recovery of amortized cost
 
—

 
723

 
247

 
4,332

Sales
 
—

 
—

 
—

 
(7,796
)
Balance of credit-related OTTI recognized on available for sale debt securities, end of period
 
$
76,027

 
$
72,915

 
$
76,027

 
$
72,915

Fair Value Option Securities [Table Text Block] 
The fair value and net unrealized gain (loss) included in Fair value option securities is as follows (in thousands):
 
 
June 30, 2013
 
December 31, 2012
 
June 30, 2012
 
 
Fair Value
 
Net Unrealized Gain
 
Fair Value
 
Net Unrealized Gain
 
Fair
Value
 
Net Unrealized Gain
U.S. agency residential mortgage-backed securities
 
$
203,816

 
$
(8,048
)
 
$
257,040

 
$
3,314

 
$
299,467

 
$
8,373

Corporate debt securities
 
—

 
—

 
26,486

 
1,409

 
25,710

 
621

Other securities
 
1,940

 
(8
)
 
770

 
47

 
—

 
—

Total
 
$
205,756

 
$
(8,056
)
 
$
284,296

 
$
4,770

 
$
325,177

 
$
8,994

Derivatives (Tables)
Derivative Contracts 
The following table summarizes the fair values of derivative contracts recorded as “derivative contracts” assets and liabilities in the balance sheet at June 30, 2013 (in thousands):
 
 
Assets
 
 
Notional1
 
Gross Fair Value
 
Netting Adjustments
 
Net Fair Value Before Cash Collateral
 
Cash Collateral
 
Fair Value Net of Cash Collateral
Customer risk management programs:
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
16,351,395

 
$
545,290

 
$
(268,087
)
 
$
277,203

 
$
—

 
$
277,203

Interest rate swaps
 
1,381,836

 
51,745

 
—

 
51,745

 
—

 
51,745

Energy contracts
 
1,501,959

 
65,414

 
(35,376
)
 
30,038

 
(2,537
)
 
27,501

Agricultural contracts
 
207,439

 
5,871

 
(4,658
)
 
1,213

 
—

 
1,213

Foreign exchange contracts
 
177,643

 
177,643

 
—

 
177,643

 
—

 
177,643

Equity option contracts
 
211,595

 
13,469

 
—

 
13,469

 
(2,568
)
 
10,901

Total customer risk management programs
 
19,831,867

 
859,432

 
(308,121
)
 
551,311

 
(5,105
)
 
546,206

Interest rate risk management programs
 
—

 
—

 
—

 
—

 
—

 
—

Total derivative contracts
 
$
19,831,867

 
$
859,432

 
$
(308,121
)
 
$
551,311

 
$
(5,105
)
 
$
546,206

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Liabilities
 
 
Notional¹
 
Gross Fair Value
 
Netting Adjustments
 
Net Fair Value Before Cash Collateral
 
Cash Collateral
 
Fair Value Net of Cash Collateral
Customer risk management programs:
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
16,439,531

 
$
540,540

 
$
(268,087
)
 
$
272,453

 
$
—

 
$
272,453

Interest rate swaps
 
1,381,836

 
52,095

 
—

 
52,095

 
(19,381
)
 
32,714

Energy contracts
 
1,441,957

 
63,515

 
(35,376
)
 
28,139

 
(5,865
)
 
22,274

Agricultural contracts
 
207,329

 
5,824

 
(4,658
)
 
1,166

 
—

 
1,166

Foreign exchange contracts
 
177,187

 
177,187

 
—

 
177,187

 
—

 
177,187

Equity option contracts
 
211,595

 
13,469

 
—

 
13,469

 
—

 
13,469

Total customer risk management programs
 
19,859,435

 
852,630

 
(308,121
)
 
544,509

 
(25,246
)
 
519,263

Interest rate risk management programs
 
47,000

 
2,728

 
—

 
2,728

 
—

 
2,728

Total derivative contracts
 
$
19,906,435

 
$
855,358

 
$
(308,121
)
 
$
547,237

 
$
(25,246
)
 
$
521,991

1 
Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.


The following table summarizes the fair values of derivative contracts recorded as “derivative contracts” assets and liabilities in the balance sheet at December 31, 2012 (in thousands):

 
 
Assets
 
 
Notional
 
Gross Fair Value
 
Netting Adjustments
 
Net Fair Value Before Cash Collateral
 
Cash Collateral
 
Fair Value Net of Cash Collateral
Customer risk management programs:
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
12,850,805

 
$
46,113

 
$
(15,656
)
 
$
30,457

 
$
—

 
$
30,457

Interest rate swaps
 
1,319,827

 
72,201

 
—

 
72,201

 
—

 
72,201

Energy contracts
 
1,346,780

 
82,349

 
(44,485
)
 
37,864

 
(3,464
)
 
34,400

Agricultural contracts
 
212,434

 
3,638

 
(3,164
)
 
474

 
—

 
474

Foreign exchange contracts
 
180,318

 
180,318

 
—

 
180,318

 
—

 
180,318

Equity option contracts
 
211,941

 
12,593

 
—

 
12,593

 
—

 
12,593

Total customer risk management programs
 
16,122,105

 
397,212

 
(63,305
)
 
333,907

 
(3,464
)
 
330,443

Interest rate risk management programs
 
66,000

 
7,663

 
—

 
7,663

 
—

 
7,663

Total derivative contracts
 
$
16,188,105

 
$
404,875

 
$
(63,305
)
 
$
341,570

 
$
(3,464
)
 
$
338,106

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Liabilities
 
 
Notional
 
Gross Fair Value
 
Netting Adjustments
 
Net Fair Value Before Cash Collateral
 
Cash Collateral
 
Fair Value Net of Cash Collateral
Customer risk management programs:
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
13,239,078

 
$
43,064

 
$
(15,656
)
 
$
27,408

 
$
(15,467
)
 
$
11,941

Interest rate swaps
 
1,319,827

 
72,724

 
—

 
72,724

 
(31,945
)
 
40,779

Energy contracts
 
1,334,349

 
83,654

 
(44,485
)
 
39,169

 
(1,769
)
 
37,400

Agricultural contracts
 
212,135

 
3,571

 
(3,164
)
 
407

 
(188
)
 
219

Foreign exchange contracts
 
179,852

 
179,852

 
—

 
179,852

 
—

 
179,852

Equity option contracts
 
211,941

 
12,593

 
—

 
12,593

 
—

 
12,593

Total customer risk management programs
 
16,497,182

 
395,458

 
(63,305
)
 
332,153

 
(49,369
)
 
282,784

Interest rate risk management programs
 
50,000

 
805

 
—

 
805

 
—

 
805

Total derivative contracts
 
$
16,547,182

 
$
396,263

 
$
(63,305
)
 
$
332,958

 
$
(49,369
)
 
$
283,589

1 
Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.




The following table summarizes the fair values of derivative contracts recorded as “derivative contracts” assets and liabilities in the balance sheet at June 30, 2012 (in thousands):
 
 
Assets
 
 
Notional1
 
Gross Fair Value
 
Netting Adjustments
 
Net Fair Value Before Cash Collateral
 
Cash Collateral
 
Fair Value Net of Cash Collateral
Customer risk management programs:
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
13,724,514

 
$
144,158

 
$
(39,377
)
 
$
104,781

 
$
—

 
$
104,781

Interest rate swaps
 
1,271,138

 
77,121

 
—

 
77,121

 
—

 
77,121

Energy contracts
 
1,667,819

 
150,754

 
(75,129
)
 
75,625

 
(50,622
)
 
25,003

Agricultural contracts
 
140,722

 
4,655

 
(3,530
)
 
1,125

 
—

 
1,125

Foreign exchange contracts
 
136,815

 
136,815

 
—

 
136,815

 
—

 
136,815

Equity option contracts
 
218,149

 
13,726

 
—

 
13,726

 
—

 
13,726

Total customer risk management programs
 
17,159,157

 
527,229

 
(118,036
)
 
409,193

 
(50,622
)
 
358,571

Interest rate risk management programs
 
66,000

 
7,633

 
—

 
7,633

 
—

 
7,633

Total derivative contracts
 
$
17,225,157

 
$
534,862

 
$
(118,036
)
 
$
416,826

 
$
(50,622
)
 
$
366,204

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Liabilities
 
 
Notional1
 
Gross Fair Value
 
Netting Adjustments
 
Net Fair Value Before Cash Collateral
 
Cash Collateral
 
Fair Value Net of Cash Collateral
Customer risk management programs:
 
 
 
 
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
13,579,184

 
$
140,873

 
$
(39,377
)
 
$
101,496

 
$
—

 
$
101,496

Interest rate swaps
 
1,271,138

 
77,671

 
—

 
77,671

 
(29,090
)
 
48,581

Energy contracts
 
1,653,592

 
156,690

 
(75,129
)
 
81,561

 
(13,246
)
 
68,315

Agricultural contracts
 
140,255

 
4,604

 
(3,530
)
 
1,074

 
(223
)
 
851

Foreign exchange contracts
 
136,483

 
136,483

 
—

 
136,483

 
—

 
136,483

Equity option contracts
 
218,149

 
13,726

 
—

 
13,726

 
—

 
13,726

Total customer risk management programs
 
16,998,801

 
530,047

 
(118,036
)
 
412,011

 
(42,559
)
 
369,452

Interest rate risk management programs
 
25,000

 
601

 
—

 
601

 
—

 
601

Total derivative contracts
 
$
17,023,801

 
$
530,648

 
$
(118,036
)
 
$
412,612

 
$
(42,559
)
 
$
370,053

1 
Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.
Derivative Instruments, Gain (Loss) in Statement of Financial Performance 
The following summarizes the pre-tax net gains (losses) on derivative instruments and where they are recorded in the income statement (in thousands):
 
 
Three Months Ended
 
 
June 30, 2013
 
June 30, 2012
 
 
Brokerage
and Trading Revenue
 
Gain (Loss)
on Derivatives, Net
 
Brokerage
and Trading
Revenue
 
Gain (Loss)
on Derivatives,
Net
Customer Risk Management Programs:
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
1,716

 
$
—

 
$
186

 
$
—

Interest rate swaps
 
768

 
—

 
1,231

 
—

Energy contracts
 
2,436

 
—

 
2,588

 
—

Agricultural contracts
 
77

 
—

 
92

 
—

Foreign exchange contracts
 
172

 
—

 
125

 
—

Equity option contracts
 
—

 
—

 
—

 
—

Total customer risk management programs
 
5,169

 
—

 
4,222

 
—

Interest Rate Risk Management Programs
 
—

 
(2,527
)
 
—

 
2,345

Total Derivative Contracts
 
$
5,169

 
$
(2,527
)
 
$
4,222

 
$
2,345


 
 
Six Months Ended
 
 
June 30, 2013
 
June 30, 2012
 
 
Brokerage
and Trading Revenue
 
Gain (Loss)
on Derivatives, Net
 
Brokerage
and Trading
Revenue
 
Gain (Loss)
on Derivatives,
Net
Customer Risk Management Programs:
 
 
 
 
 
 
 
 
Interest rate contracts
 
 
 
 
 
 
 
 
To-be-announced residential mortgage-backed securities
 
$
1,701

 
$
—

 
$
1,307

 
$
—

Interest rate swaps
 
1,535

 
—

 
2,144

 
—

Energy contracts
 
4,219

 
—

 
4,898

 
—

Agricultural contracts
 
185

 
—

 
183

 
—

Foreign exchange contracts
 
360

 
—

 
331

 
—

Equity option contracts
 
—

 
—

 
—

 
—

Total customer risk management programs
 
8,000

 
—

 
8,863

 
—

Interest Rate Risk Management Programs
 
—

 
(3,468
)
 
—

 
(128
)
Total Derivative Contracts
 
$
8,000

 
$
(3,468
)
 
$
8,863

 
$
(128
)
Loans and Allowances for Credit Losses (Tables)
Schedule of Loans by Portfolio Segment [Table Text Block] 
Portfolio segments of the loan portfolio are as follows (in thousands):

 
 
June 30, 2013
 
December 31, 2012
 
 
Fixed
Rate
 
Variable
Rate
 
Non-accrual
 
Total
 
Fixed
Rate
 
Variable
Rate
 
Non-accrual
 
Total
Commercial
 
$
4,265,136

 
$
3,422,115

 
$
20,869

 
$
7,708,120

 
$
4,158,548

 
$
3,458,897

 
$
24,467

 
$
7,641,912

Commercial real estate
 
855,806

 
1,402,597

 
58,693

 
2,317,096

 
845,023

 
1,323,350

 
60,626

 
2,228,999

Residential mortgage
 
1,768,607

 
230,644

 
40,534

 
2,039,785

 
1,747,038

 
251,394

 
46,608

 
2,045,040

Consumer
 
142,737

 
231,007

 
2,037

 
375,781

 
175,412

 
217,384

 
2,709

 
395,505

Total
 
$
7,032,286

 
$
5,286,363

 
$
122,133

 
$
12,440,782

 
$
6,926,021

 
$
5,251,025

 
$
134,410

 
$
12,311,456

Accruing loans past due (90 days)1
 
 

 
 

 
 

 
$
2,460

 
 

 
 

 
 

 
$
3,925

 
 
June 30, 2012
 
 
Fixed
Rate
 
Variable
Rate
 
Non-accrual
 
Total
Commercial
 
$
3,571,513

 
$
3,429,493

 
$
34,529

 
$
7,035,535

Commercial real estate
 
882,100

 
1,187,416

 
80,214

 
2,149,730

Residential mortgage
 
1,708,164

 
271,994

 
22,727

 
2,002,885

Consumer
 
198,305

 
182,964

 
7,012

 
388,281

Total
 
$
6,360,082

 
$
5,071,867

 
$
144,482

 
$
11,576,431

Accruing loans past due (90 days)1
 
 

 
 

 
 

 
$
691

1 
Excludes residential mortgage loans guaranteed by agencies of the U.S. government
Rollforward of Allowance For Loan Losses And Accrual for Off-Balance Sheet Credit Losses [Table Text Block] 
The activity in the allowance for loan losses and the allowance for off-balance sheet credit losses related to loan commitments and standby letters of credit for the three months ended June 30, 2013 is summarized as follows (in thousands):
 
 
Commercial
 
Commercial Real Estate
 
Residential Mortgage
 
Consumer
 
Nonspecific allowance
 
Total
Allowance for loan losses:
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
66,419

 
$
48,528

 
$
40,222

 
$
7,984

 
$
42,812

 
$
205,965

Provision for loan losses
 
223

 
(1,118
)
 
597

 
162

 
(363
)
 
(499
)
Loans charged off
 
(4,538
)
 
(450
)
 
(2,057
)
 
(1,507
)
 
—

 
(8,552
)
Recoveries
 
1,940

 
2,727

 
444

 
1,099

 
—

 
6,210

Ending balance
 
$
64,044

 
$
49,687

 
$
39,206

 
$
7,738

 
$
42,449

 
$
203,124

Allowance for off-balance sheet credit losses:
 
 

 
 

 
 

 
 

 
 

 
 

Beginning balance
 
$
405

 
$
618

 
$
72

 
$
10

 
$
—

 
$
1,105

Provision for off-balance sheet credit losses
 
(3
)
 
560

 
(66
)
 
8

 
—

 
499

Ending balance
 
$
402

 
$
1,178

 
$
6

 
$
18

 
$
—

 
$
1,604

 
 
 
 
 
 
 
 
 
 
 
 
 
Total provision for credit losses
 
$
220

 
$
(558
)
 
$
531

 
$
170

 
$
(363
)
 
$
—


The activity in the allowance for loan losses and the allowance for off-balance sheet credit losses related to loan commitments and standby letters of credit for the six months ended June 30, 2013 is summarized as follows (in thousands):
 
 
Commercial
 
Commercial Real Estate
 
Residential Mortgage
 
Consumer
 
Nonspecific allowance
 
Total
Allowance for loan losses:
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
65,280

 
$
54,884

 
$
41,703

 
$
9,453

 
$
44,187

 
$
215,507

Provision for loan losses
 
(1,733
)
 
(3,798
)
 
323

 
(743
)
 
(1,738
)
 
(7,689
)
Loans charged off
 
(4,836
)
 
(5,250
)
 
(3,836
)
 
(3,539
)
 
—

 
(17,461
)
Recoveries
 
5,333

 
3,851

 
1,016

 
2,567

 
—

 
12,767

Ending balance
 
$
64,044

 
$
49,687

 
$
39,206

 
$
7,738

 
$
42,449

 
$
203,124

Allowance for off-balance sheet credit losses:
 
 

 
 

 
 

 
 

 
 

 
 

Beginning balance
 
$
475

 
$
1,353

 
$
78

 
$
9

 
$
—

 
$
1,915

Provision for off-balance sheet credit losses
 
(73
)
 
(175
)
 
(72
)
 
9

 
—

 
(311
)
Ending balance
 
$
402

 
$
1,178

 
$
6

 
$
18

 
$
—

 
$
1,604

 
 
 
 
 
 
 
 
 
 
 
 
 
Total provision for credit losses
 
$
(1,806
)
 
$
(3,973
)
 
$
251

 
$
(734
)
 
$
(1,738
)
 
$
(8,000
)

The activity in the allowance for loan losses and the allowance for off-balance sheet credit losses related to loan commitments and standby letters of credit for the three months ended June 30, 2012 is summarized as follows (in thousands):

 
 
Commercial
 
Commercial Real Estate
 
Residential Mortgage
 
Consumer
 
Nonspecific allowance
 
Total
Allowance for loan losses:
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
85,972

 
$
62,742

 
$
41,628

 
$
9,517

 
$
44,350

 
$
244,209

Provision for loan losses
 
(2,526
)
 
(6,264
)
 
4,371

 
212

 
(3,492
)
 
(7,699
)
Loans charged off
 
(4,094
)
 
(1,216
)
 
(4,061
)
 
(2,172
)
 
—

 
(11,543
)
Recoveries
 
4,125

 
544

 
750

 
1,283

 
—

 
6,702

Ending balance
 
$
83,477

 
$
55,806

 
$
42,688

 
$
8,840

 
$
40,858

 
$
231,669

Allowance for off-balance sheet credit losses:
 
 

 
 

 
 

 
 

 
 

 
 

Beginning balance
 
$
8,362

 
$
1,575

 
$
82

 
$
29

 
$
—

 
$
10,048

Provision for off-balance sheet credit losses
 
(138
)
 
(150
)
 
(2
)
 
(11
)
 
—

 
(301
)
Ending balance
 
$
8,224

 
$
1,425

 
$
80

 
$
18

 
$
—

 
$
9,747

 
 
 
 
 
 
 
 
 
 
 
 
 
Total provision for credit losses
 
$
(2,664
)
 
$
(6,414
)
 
$
4,369

 
$
201

 
$
(3,492
)
 
$
(8,000
)


The activity in the allowance for loan losses and the allowance for off-balance sheet credit losses related to loan commitments and standby letters of credit for the six months ended June 30, 2012 is summarized as follows (in thousands):

 
 
Commercial
 
Commercial Real Estate
 
Residential Mortgage
 
Consumer
 
Nonspecific allowance
 
Total
Allowance for loan losses:
 
 
 
 
 
 
 
 
 
 
 
 
Beginning balance
 
$
83,443

 
$
67,034

 
$
46,476

 
$
10,178

 
$
46,350

 
$
253,481

Provision for loan losses
 
991

 
(5,143
)
 
898

 
260

 
(5,492
)
 
(8,486
)
Loans charged off
 
(7,028
)
 
(7,941
)
 
(5,847
)
 
(4,401
)
 
—

 
(25,217
)
Recoveries
 
6,071

 
1,856

 
1,161

 
2,803

 
—

 
11,891

Ending balance
 
$
83,477

 
$
55,806

 
$
42,688

 
$
8,840

 
$
40,858

 
$
231,669

Allowance for off-balance sheet credit losses:
 
 

 
 

 
 

 
 

 
 

 
 

Beginning balance
 
$
7,906

 
$
1,250

 
$
91

 
$
14

 
$
—

 
$
9,261

Provision for off-balance sheet credit losses
 
318

 
175

 
(11
)
 
4

 
—

 
486

Ending balance
 
$
8,224

 
$
1,425

 
$
80

 
$
18

 
$
—

 
$
9,747

 
 
 
 
 
 
 
 
 
 
 
 
 
Total provision for credit losses
 
$
1,309

 
$
(4,968
)
 
$
887

 
$
264

 
$
(5,492
)
 
$
(8,000
)
Schedule of Allowance for Loan Losses and Recorded Investment by Impairment Methodology [Table Text Block] 
The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment measurement method at June 30, 2013 is as follows (in thousands):

 
 
Collectively Measured
for Impairment
 
Individually Measured
for Impairment
 
Total
 
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related
Allowance
Commercial
 
$
7,687,251

 
$
63,492

 
$
20,869

 
$
552

 
$
7,708,120

 
$
64,044

Commercial real estate
 
2,258,403

 
48,493

 
58,693

 
1,194

 
2,317,096

 
49,687

Residential mortgage
 
1,999,334

 
39,028

 
40,451

 
178

 
2,039,785

 
39,206

Consumer
 
373,744

 
7,618

 
2,037

 
120

 
375,781

 
7,738

Total
 
12,318,732

 
158,631

 
122,050

 
2,044

 
12,440,782

 
160,675

 
 
 
 
 
 
 
 
 
 
 
 
 
Nonspecific allowance
 
—

 
—

 
—

 
—

 
—

 
42,449

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
12,318,732

 
$
158,631

 
$
122,050

 
$
2,044

 
$
12,440,782

 
$
203,124



The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment measurement method at December 31, 2012 is as follows (in thousands):

 
 
Collectively Measured
for Impairment
 
Individually Measured
for Impairment
 
Total
 
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related
Allowance
Commercial
 
$
7,617,445

 
$
65,050

 
$
24,467

 
$
230

 
$
7,641,912

 
$
65,280

Commercial real estate
 
2,168,373

 
51,775

 
60,626

 
3,109

 
2,228,999

 
54,884

Residential mortgage
 
1,998,432

 
40,934

 
46,608

 
769

 
2,045,040

 
41,703

Consumer
 
392,796

 
9,328

 
2,709

 
125

 
395,505

 
9,453

Total
 
12,177,046

 
167,087

 
134,410

 
4,233

 
12,311,456

 
171,320

 
 
 
 
 
 
 
 
 
 
 
 
 
Nonspecific allowance
 
—

 
—

 
—

 
—

 
—

 
44,187

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
12,177,046

 
$
167,087

 
$
134,410

 
$
4,233

 
$
12,311,456

 
$
215,507



The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment measurement method at June 30, 2012 is as follows (in thousands):

 
 
Collectively Measured
for Impairment
 
Individually Measured
for Impairment
 
Total
 
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related
Allowance
Commercial
 
$
7,001,006

 
$
83,199

 
$
34,529

 
$
278

 
$
7,035,535

 
$
83,477

Commercial real estate
 
2,069,516

 
54,526

 
80,214

 
1,280

 
2,149,730

 
55,806

Residential mortgage
 
1,980,158

 
42,453

 
22,727

 
235

 
2,002,885

 
42,688

Consumer
 
381,268

 
8,798

 
7,013

 
42

 
388,281

 
8,840

Total
 
11,431,948

 
188,976

 
144,483

 
1,835

 
11,576,431

 
190,811

 
 
 
 
 
 
 
 
 
 
 
 
 
Nonspecific allowance
 
—

 
—

 
—

 
—

 
—

 
40,858

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
11,431,948

 
$
188,976

 
$
144,483

 
$
1,835

 
$
11,576,431

 
$
231,669

Schedule of Allowance for Loan Losses and Recorded Investment by Portfolio Segment for Risk Graded and Non-Risk Graded Loans [Table Text Block] 
The allowance for loan losses and recorded investment of the related loans by portfolio segment for risk graded and non-risk graded loans at June 30, 2013 is as follows (in thousands):

 
 
Internally Risk Graded
 
Non-Graded
 
Total
 
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related
Allowance
Commercial
 
$
7,689,954

 
$
62,830

 
$
18,166

 
$
1,214

 
$
7,708,120

 
$
64,044

Commercial real estate
 
2,317,096

 
49,687

 
—

 
—

 
2,317,096

 
49,687

Residential mortgage
 
230,359

 
3,753

 
1,809,426

 
35,453

 
2,039,785

 
39,206

Consumer
 
243,384

 
2,316

 
132,397

 
5,422

 
375,781

 
7,738

Total
 
10,480,793

 
118,586

 
1,959,989

 
42,089

 
12,440,782

 
160,675

 
 
 
 
 
 
 
 
 
 
 
 
 
Nonspecific allowance
 
—

 
—

 
—

 
—

 
—

 
42,449

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
10,480,793

 
$
118,586

 
$
1,959,989

 
$
42,089

 
$
12,440,782

 
$
203,124

 
The allowance for loan losses and recorded investment of the related loans by portfolio segment for risk graded and non-risk graded loans at December 31, 2012 is as follows (in thousands):

 
 
Internally Risk Graded
 
Non-Graded
 
Total
 
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related
Allowance
Commercial
 
$
7,624,442

 
$
64,181

 
$
17,470

 
$
1,099

 
$
7,641,912

 
$
65,280

Commercial real estate
 
2,228,999

 
54,884

 
—

 
—

 
2,228,999

 
54,884

Residential mortgage
 
265,503

 
5,270

 
1,779,537

 
36,433

 
2,045,040

 
41,703

Consumer
 
231,376

 
2,987

 
164,129

 
6,466

 
395,505

 
9,453

Total
 
10,350,320

 
127,322

 
1,961,136

 
43,998

 
12,311,456

 
171,320

 
 
 
 
 
 
 
 
 
 
 
 
 
Nonspecific allowance
 
—

 
—

 
—

 
—

 
—

 
44,187

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
10,350,320

 
$
127,322

 
$
1,961,136

 
$
43,998

 
$
12,311,456

 
$
215,507


The allowance for loan losses and recorded investment of the related loans by portfolio segment for risk graded and non-risk graded loans at June 30, 2012 is as follows (in thousands):

 
 
Internally Risk Graded
 
Non-Graded
 
Total
 
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related Allowance
 
Recorded Investment
 
Related
Allowance
Commercial
 
$
7,017,925

 
$
82,357

 
$
17,610

 
$
1,120

 
$
7,035,535

 
$
83,477

Commercial real estate
 
2,149,724

 
55,806

 
6

 
—

 
2,149,730

 
55,806

Residential mortgage
 
286,499

 
6,987

 
1,716,386

 
35,701

 
2,002,885

 
42,688

Consumer
 
196,735

 
1,895

 
191,546

 
6,945

 
388,281

 
8,840

Total
 
9,650,883

 
147,045

 
1,925,548

 
43,766

 
11,576,431

 
190,811

 
 
 
 
 
 
 
 
 
 
 
 
 
Nonspecific allowance
 
—

 
—

 
—

 
—

 
—

 
40,858

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
9,650,883

 
$
147,045

 
$
1,925,548

 
$
43,766

 
$
11,576,431

 
$
231,669

Schedule of Credit Quality Indicators [Table Text Block] 
The following table summarizes the Company’s loan portfolio at June 30, 2013 by the risk grade categories (in thousands): 
 
 
Internally Risk Graded
 
Non-Graded
 
 
 
 
Performing
 
Potential Problem
 
Nonaccrual
 
Performing
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,378,187

 
$
4,282

 
$
2,277

 
$
—

 
$
—

 
$
2,384,746

Services
 
2,170,695

 
26,110

 
7,448

 
—

 
—

 
2,204,253

Wholesale/retail
 
1,167,215

 
1,628

 
6,700

 
—

 
—

 
1,175,543

Manufacturing
 
381,729

 
3,528

 
876

 
—

 
—

 
386,133

Healthcare
 
1,116,089

 
51

 
2,670

 
—

 
—

 
1,118,810

Integrated food services
 
158,674

 
4,877

 
—

 
—

 
—

 
163,551

Other commercial and industrial
 
251,563

 
4,518

 
837

 
18,105

 
61

 
275,084

Total commercial
 
7,624,152

 
44,994

 
20,808

 
18,105

 
61

 
7,708,120

 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

 
 

Construction and land development
 
184,216

 
20,303

 
21,135

 
—

 
—

 
225,654

Retail
 
540,872

 
4,134

 
8,406

 
—

 
—

 
553,412

Office
 
450,790

 
940

 
7,828

 
—

 
—

 
459,558

Multifamily
 
491,864

 
2,141

 
6,447

 
—

 
—

 
500,452

Industrial
 
253,732

 
258

 
—

 
—

 
—

 
253,990

Other commercial real estate
 
296,864

 
12,289

 
14,877

 
—

 
—

 
324,030

Total commercial real estate
 
2,218,338

 
40,065

 
58,693

 
—

 
—

 
2,317,096

 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
219,222

 
4,789

 
6,348

 
839,113

 
26,399

 
1,095,871

Permanent mortgages guaranteed by U.S. government agencies
 
—

 
—

 
—

 
156,804

 
83

 
156,887

Home equity
 
—

 
—

 
—

 
779,323

 
7,704

 
787,027

Total residential mortgage
 
219,222

 
4,789

 
6,348

 
1,775,240

 
34,186

 
2,039,785

 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
—

 
—

 
—

 
15,367

 
1,188

 
16,555

Other consumer
 
242,059

 
930

 
395

 
115,388

 
454

 
359,226

Total consumer
 
242,059

 
930

 
395

 
130,755

 
1,642

 
375,781

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
10,303,771

 
$
90,778

 
$
86,244

 
$
1,924,100

 
$
35,889

 
$
12,440,782


The following table summarizes the Company’s loan portfolio at December 31, 2012 by the risk grade categories (in thousands): 
 
 
Internally Risk Graded
 
Non-Graded
 
 
 
 
Performing
 
Potential Problem
 
Nonaccrual
 
Performing
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,448,954

 
$
9,245

 
$
2,460

 
$
—

 
$
—

 
$
2,460,659

Services
 
2,119,734

 
32,362

 
12,090

 
—

 
—

 
2,164,186

Wholesale/retail
 
1,093,413

 
9,949

 
3,077

 
—

 
—

 
1,106,439

Manufacturing
 
337,132

 
9,345

 
2,007

 
—

 
—

 
348,484

Healthcare
 
1,077,773

 
467

 
3,166

 
—

 
—

 
1,081,406

Integrated food services
 
190,422

 
—

 
684

 
—

 
—

 
191,106

Other commercial and industrial
 
266,329

 
4,914

 
919

 
17,406

 
64

 
289,632

Total commercial
 
7,533,757

 
66,282

 
24,403

 
17,406

 
64

 
7,641,912

 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

 
 

Construction and land development
 
204,010

 
22,952

 
26,131

 
—

 
—

 
253,093

Retail
 
508,342

 
6,327

 
8,117

 
—

 
—

 
522,786

Office
 
405,763

 
15,280

 
6,829

 
—

 
—

 
427,872

Multifamily
 
393,566

 
6,624

 
2,706

 
—

 
—

 
402,896

Industrial
 
241,761

 
265

 
3,968

 
—

 
—

 
245,994

Other commercial real estate
 
351,663

 
11,820

 
12,875

 
—

 
—

 
376,358

Total commercial real estate
 
2,105,105

 
63,268

 
60,626

 
—

 
—

 
2,228,999

 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
242,823

 
10,271

 
12,409

 
831,008

 
27,454

 
1,123,965

Permanent mortgages guaranteed by U.S. government agencies
 
—

 
—

 
—

 
159,955

 
489

 
160,444

Home equity
 
—

 
—

 
—

 
754,375

 
6,256

 
760,631

Total residential mortgage
 
242,823

 
10,271

 
12,409

 
1,745,338

 
34,199

 
2,045,040

 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
—

 
—

 
—

 
33,157

 
1,578

 
34,735

Other consumer
 
229,570

 
1,091

 
715

 
128,978

 
416

 
360,770

Total consumer
 
229,570

 
1,091

 
715

 
162,135

 
1,994

 
395,505

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
10,111,255

 
$
140,912

 
$
98,153

 
$
1,924,879

 
$
36,257

 
$
12,311,456


The following table summarizes the Company’s loan portfolio at June 30, 2012 by the risk grade categories (in thousands): 
 
 
Internally Risk Graded
 
Non-Graded
 
 
 
 
Performing
 
Potential Problem
 
Nonaccrual
 
Performing
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,254,806

 
$
10,959

 
$
3,087

 
$
—

 
$
—

 
$
2,268,852

Services
 
1,937,953

 
40,254

 
10,123

 
—

 
—

 
1,988,330

Wholesale/retail
 
930,912

 
11,597

 
4,175

 
—

 
—

 
946,684

Manufacturing
 
325,024

 
9,832

 
12,230

 
—

 
—

 
347,086

Healthcare
 
979,985

 
1,045

 
3,310

 
—

 
—

 
984,340

Integrated food services
 
205,573

 
696

 
—

 
—

 
—

 
206,269

Other commercial and industrial
 
274,535

 
325

 
1,504

 
17,510

 
100

 
293,974

Total commercial
 
6,908,788

 
74,708

 
34,429

 
17,510

 
100

 
7,035,535

 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

 
 

Construction and land development
 
219,301

 
26,746

 
46,050

 
—

 
—

 
292,097

Retail
 
489,948

 
8,290

 
7,908

 
—

 
—

 
506,146

Office
 
372,398

 
12,352

 
10,589

 
—

 
—

 
395,339

Multifamily
 
348,520

 
6,677

 
3,219

 
—

 
—

 
358,416

Industrial
 
228,452

 
273

 
—

 
—

 
—

 
228,725

Other commercial real estate
 
342,634

 
13,925

 
12,442

 
—

 
6

 
369,007

Total commercial real estate
 
2,001,253

 
68,263

 
80,208

 
—

 
6

 
2,149,730

 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
265,891

 
13,398

 
7,210

 
847,414

 
10,926

 
1,144,839

Permanent mortgages guaranteed by U.S. government agencies
 
—

 
—

 
—

 
162,240

 
—

 
162,240

Home equity
 
—

 
—

 
—

 
691,215

 
4,591

 
695,806

Total residential mortgage
 
265,891

 
13,398

 
7,210

 
1,700,869

 
15,517

 
2,002,885

 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
—

 
—

 
—

 
60,681

 
2,257

 
62,938

Other consumer
 
189,212

 
3,053

 
4,470

 
128,323

 
285

 
325,343

Total consumer
 
189,212

 
3,053

 
4,470

 
189,004

 
2,542

 
388,281

 
 
 
 
 
 
 
 
 
 
 
 
 
Total
 
$
9,365,144

 
$
159,422

 
$
126,317

 
$
1,907,383

 
$
18,165

 
$
11,576,431

Summary of Impaired Loans [Table Text Block] 
Impaired Loans

Loans are considered to be impaired when it is probable that the Company will not be able to collect all amounts due according to the contractual terms of the loan agreement. This includes all nonaccruing loans, all loans modified in a TDR and all loans repurchased from GNMA pools.

A summary of impaired loans follows (in thousands):
 
As of
 
For the
 
For the
 
June 30, 2013
 
Three Months Ended
 
Six Months Ended
 
 
 
Recorded Investment
 
 
 
June 30, 2013
 
June 30, 2013
 
Unpaid
Principal
Balance
 
Total
 
With No
Allowance
 
With Allowance
 
Related Allowance
 
Average Recorded
Investment
 
Interest Income Recognized
 
Average Recorded
Investment
 
Interest Income Recognized
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Energy
$
2,277

 
$
2,277

 
$
2,277

 
$
—

 
$
—

 
$
2,327

 
$
—

 
$
2,369

 
$
—

Services
9,631

 
7,448

 
6,283

 
1,165

 
493

 
8,461

 
—

 
9,769

 
—

Wholesale/retail
10,916

 
6,700

 
6,656

 
44

 
11

 
4,470

 
—

 
4,889

 
—

Manufacturing
1,168

 
876

 
876

 
—

 
—

 
1,362

 
—

 
1,442

 
—

Healthcare
3,357

 
2,670

 
2,622

 
48

 
48

 
2,816

 
—

 
2,918

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

 
—

 
342

 
—

Other commercial and industrial
8,398

 
898

 
898

 
—

 
—

 
930

 
—

 
941

 
—

Total commercial
35,747

 
20,869

 
19,612

 
1,257

 
552

 
20,366

 
—

 
22,670

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

Construction and land development
24,752

 
21,135

 
20,841

 
294

 
102

 
22,299

 
—

 
23,633

 
—

Retail
9,827

 
8,406

 
8,406

 
—

 
—

 
8,664

 
—

 
8,262

 
—

Office
9,245

 
7,828

 
7,820

 
8

 
8

 
10,340

 
—

 
7,329

 
—

Multifamily
6,447

 
6,447

 
4,415

 
2,032

 
196

 
5,474

 
—

 
4,577

 
—

Industrial
—

 
—

 
—

 
—

 
—

 
1,099

 
—

 
1,984

 
—

Other real estate loans
17,196

 
14,877

 
13,113

 
1,764

 
888

 
14,060

 
—

 
13,876

 
—

Total commercial real estate
67,467

 
58,693

 
54,595

 
4,098

 
1,194

 
61,936

 
—

 
59,661

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

Permanent mortgage
42,983

 
32,747

 
32,495

 
252

 
178

 
35,450

 
285

 
36,304

 
603

Permanent mortgage guaranteed by U.S. government agencies1
165,431

 
156,887

 
156,887

 
—

 
—

 
158,038

 
1,628

 
162,256

 
3,408

Home equity
7,704

 
7,704

 
7,704

 
—

 
—

 
7,382

 
—

 
6,980

 
—

Total residential mortgage
216,118

 
197,338

 
197,086

 
252

 
178

 
200,870

 
1,913

 
205,540

 
4,011

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

 
 

Indirect automobile
1,188

 
1,188

 
1,188

 
—

 
—

 
1,254

 
—

 
1,383

 
—

Other consumer
915

 
849

 
729

 
120

 
120

 
851

 
—

 
990

 
—

Total consumer
2,103

 
2,037

 
1,917

 
120

 
120

 
2,105

 
—

 
2,373

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total
$
321,435

 
$
278,937

 
$
273,210

 
$
5,727

 
$
2,044

 
$
285,277

 
$
1,913

 
$
290,244

 
$
4,011

1 
All permanent mortgage loans guaranteed by U.S. government agencies are considered impaired as we do not expect full collection of contractual principal and interest. At June 30, 2013, $83 thousand of these loans were nonaccruing and $157 million were accruing based on the guarantee by U.S. government agencies.

Generally, no interest income is recognized on impaired loans until all principal balances, including amounts charged-off, are recovered.

A summary of impaired loans at December 31, 2012 follows (in thousands): 
 
 
 
 
Recorded Investment
 
 
 
 
Unpaid
Principal
Balance
 
Total
 
With No
Allowance
 
With Allowance
 
Related Allowance
Commercial:
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,460

 
$
2,460

 
$
2,460

 
$
—

 
$
—

Services
 
15,715

 
12,090

 
11,940

 
150

 
149

Wholesale/retail
 
9,186

 
3,077

 
3,016

 
61

 
15

Manufacturing
 
2,447

 
2,007

 
2,007

 
—

 
—

Healthcare
 
4,256

 
3,166

 
2,050

 
1,116

 
66

Integrated food services
 
684

 
684

 
684

 
—

 
—

Other commercial and industrial
 
8,482

 
983

 
983

 
—

 
—

Total commercial
 
43,230

 
24,467

 
23,140

 
1,327

 
230

 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

Construction and land development
 
44,721

 
26,131

 
25,575

 
556

 
155

Retail
 
9,797

 
8,117

 
8,117

 
—

 
—

Office
 
8,949

 
6,829

 
6,604

 
225

 
21

Multifamily
 
3,189

 
2,706

 
2,706

 
—

 
—

Industrial
 
3,968

 
3,968

 
—

 
3,968

 
2,290

Other real estate loans
 
15,377

 
12,875

 
10,049

 
2,826

 
643

Total commercial real estate
 
86,001

 
60,626

 
53,051

 
7,575

 
3,109

 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
51,153

 
39,863

 
37,564

 
2,299

 
769

Permanent mortgage guaranteed by U.S. government agencies1
 
170,740

 
160,444

 
160,444

 
—

 
—

Home equity
 
6,256

 
6,256

 
6,256

 
—

 
—

Total residential mortgage
 
228,149

 
206,563

 
204,264

 
2,299

 
769

 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
1,578

 
1,578

 
1,578

 
—

 
—

Other consumer
 
1,300

 
1,131

 
1,006

 
125

 
125

Total consumer
 
2,878

 
2,709

 
2,584

 
125

 
125

 
 
 
 
 
 
 
 
 
 
 
Total
 
$
360,258

 
$
294,365

 
$
283,039

 
$
11,326

 
$
4,233

1 
All permanent mortgage loans guaranteed by U.S. government agencies are considered impaired as we do not expect full collection of contractual principal and interest. At December 31, 2012, $489 thousand of these loans were nonaccruing and $160 million were accruing based on the guarantee by U.S. government agencies.

A summary of impaired loans at June 30, 2012 follows (in thousands): 
 
As of
 
For the
 
For the
 
As of June 30, 2012
 
Three Months Ended
 
Six Months Ended
 
 
 
Recorded Investment
 
 
 
June 30, 2012
 
June 30, 2012
 
Unpaid
Principal
Balance
 
Total
 
With No
Allowance
 
With Allowance
 
Related Allowance
 
Average Recorded
Investment
 
Interest Income Recognized
 
Average Recorded
Investment
 
Interest Income Recognized
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Energy
$
3,297

 
$
3,087

 
$
3,087

 
$
—

 
$
—

 
$
1,712

 
$
—

 
$
1,712

 
$
—

Services
18,858

 
10,123

 
9,996

 
127

 
127

 
11,507

 
—

 
13,546

 
—

Wholesale/retail
5,763

 
4,175

 
4,096

 
79

 
20

 
9,782

 
—

 
12,678

 
—

Manufacturing
15,864

 
12,230

 
12,230

 
—

 
—

 
17,816

 
—

 
17,641

 
—

Healthcare
4,400

 
3,310

 
2,069

 
1,241

 
131

 
5,628

 
—

 
4,398

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
9,103

 
1,604

 
1,604

 
—

 
—

 
1,696

 
—

 
1,697

 
—

Total commercial
57,285

 
34,529

 
33,082

 
1,447

 
278

 
48,141

 
—

 
51,672

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 

Construction and land development
78,447

 
46,050

 
45,477

 
573

 
155

 
49,233

 
—

 
53,962

 
—

Retail
9,395

 
7,908

 
5,541

 
2,367

 
905

 
7,051

 
—

 
7,386

 
—

Office
13,744

 
10,589

 
10,364

 
225

 
21

 
10,661

 
—

 
11,023

 
—

Multifamily
3,333

 
3,219

 
3,219

 
—

 
—

 
3,317

 
—

 
3,366

 
—

Industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
14,750

 
12,448

 
11,524

 
924

 
199

 
13,084

 
—

 
13,967

 
—

Total commercial real estate
119,669

 
80,214

 
76,125

 
4,089

 
1,280

 
83,346

 
—

 
89,704

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 

Permanent mortgage
26,504

 
18,136

 
17,519

 
617

 
235

 
20,479

 
398

 
21,751

 
795

Permanent mortgage guaranteed by U.S. government agencies1
166,824

 
162,240

 
162,240

 
—

 
—

 
177,537

 
1,680

 
185,961

 
3,359

Home equity
4,591

 
4,591

 
4,591

 
—

 
—

 
4,616

 
—

 
4,496

 
—

Total residential mortgage
197,919

 
184,967

 
184,350

 
617

 
235

 
202,632

 
2,078

 
212,208

 
4,154

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 

Indirect automobile
2,257

 
2,257

 
2,257

 
—

 
—

 
2,433

 
—

 
2,226

 
—

Other consumer
5,342

 
4,756

 
4,714

 
42

 
42

 
4,910

 
—

 
3,039

 
—

Total consumer
7,599

 
7,013

 
6,971

 
42

 
42

 
7,343

 
—

 
5,265

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total
$
382,472

 
$
306,723

 
$
300,528

 
$
6,195

 
$
1,835

 
$
341,462

 
$
2,078

 
$
358,849

 
$
4,154


1 
All permanent mortgage loans guaranteed by U.S. government agencies are considered impaired as we do not expect full collection of contractual principal and interest. At June 30, 2012, all of these loans were accruing based on the guarantee by U.S. government agencies.
Troubled Debt Restructurings [Table Text Block] 
Troubled Debt Restructurings

A summary of troubled debt restructurings ("TDRs") by accruing status as of June 30, 2013 were as follows (in thousands):

 
 
As of June 30, 2013
 
Amounts Charged Off During
 
 
Recorded
Investment
 
Performing in Accordance With Modified Terms
 
Not
Performing in Accordance With Modified Terms
 
Specific
Allowance
 
Three Months Ended June 30, 2013
 
Six Months Ended
June 30, 2013
Nonaccruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
Energy
 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
 
3,065

 
710

 
2,355

 
228

 
—

 
—

Wholesale/retail
 
1,107

 
968

 
139

 
12

 
—

 
—

Manufacturing
 
—

 
—

 
—

 
—

 
—

 
—

Healthcare
 
—

 
—

 
—

 
—

 
—

 
—

Integrated food services
 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
 
821

 
189

 
632

 
—

 
—

 
—

Total commercial
 
4,993

 
1,867

 
3,126

 
240

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

 
 

Construction and land development
 
11,734

 
1,934

 
9,800

 
23

 
54

 
54

Retail
 
5,681

 
1,604

 
4,077

 
—

 
—

 
627

Office
 
5,488

 
1,313

 
4,175

 
—

 
77

 
77

Multifamily
 
990

 
208

 
782

 
—

 
—

 
—

Industrial
 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
 
8,746

 
3,739

 
5,007

 
—

 
—

 
—

Total commercial real estate
 
32,639

 
8,798

 
23,841

 
23

 
131

 
758

 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
17,639

 
10,917

 
6,722

 
54

 
8

 
348

Home equity
 
3,504

 
3,264

 
240

 
—

 
69

 
69

Total residential mortgage
 
21,143

 
14,181

 
6,962

 
54

 
77

 
417

 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
986

 
926

 
60

 
—

 
—

 
1

Other consumer
 
556

 
398

 
158

 
78

 
—

 
—

Total consumer
 
1,542

 
1,324

 
218

 
78

 
—

 
1

 
 
 
 
 
 
 
 
 
 
 
 
 
Total nonaccruing TDRs
 
$
60,317

 
$
26,170

 
$
34,147

 
$
395

 
$
208

 
$
1,176

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
As of June 30, 2013
 
Amounts Charged Off During
 
 
Recorded
Investment
 
Performing in Accordance With Modified Terms
 
Not
Performing in Accordance With Modified Terms
 
Specific
Allowance
 
Three Months Ended June 30, 2013
 
Six Months Ended
June 30, 2013
Accruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
 
—

 
—

 
—

 
—

 
—

 
—

Permanent mortgages guaranteed by U.S. government agencies
 
48,733

 
12,598

 
36,135

 
—

 
—

 
—

Total residential mortgage
 
48,733

 
12,598

 
36,135

 
—

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
Total accruing TDRs
 
48,733

 
12,598

 
36,135

 
—

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
Total TDRs
 
$
109,050

 
$
38,768

 
$
70,282

 
$
395

 
$
208

 
$
1,176


A summary of troubled debt restructurings by accruing status as of December 31, 2012 were as follows (in thousands):

 
 
As of
 
 
December 31, 2012
 
 
Recorded
Investment
 
Performing in Accordance With Modified Terms
 
Not
Performing in Accordance With Modified Terms
 
Specific
Allowance
Nonaccruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial:
 
 
 
 
 
 
 
 
Energy
 
$
—

 
$
—

 
$
—

 
$
—

Services
 
2,492

 
2,099

 
393

 
45

Wholesale/retail
 
2,290

 
1,362

 
928

 
15

Manufacturing
 
—

 
—

 
—

 
—

Healthcare
 
64

 
64

 
—

 
—

Integrated food services
 
—

 
—

 
—

 
—

Other commercial and industrial
 
675

 
—

 
675

 
—

Total commercial
 
5,521

 
3,525

 
1,996

 
60

 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

Construction and land development
 
14,898

 
9,989

 
4,909

 
76

Retail
 
6,785

 
5,735

 
1,050

 
—

Office
 
3,899

 
1,920

 
1,979

 
—

Multifamily
 
—

 
—

 
—

 
—

Industrial
 
—

 
—

 
—

 
—

Other real estate loans
 
5,017

 
3,399

 
1,618

 
—

Total commercial real estate
 
30,599

 
21,043

 
9,556

 
76

 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

Permanent mortgage
 
20,490

 
12,214

 
8,276

 
54

Home equity
 
—

 
—

 
—

 
—

Total residential mortgage
 
20,490

 
12,214

 
8,276

 
54

 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

Indirect automobile
 
532

 
492

 
40

 
—

Other consumer
 
2,328

 
2,097

 
231

 
83

Total consumer
 
2,860

 
2,589

 
271

 
83

 
 
 
 
 
 
 
 
 
Total nonaccuring TDRs
 
$
59,470

 
$
39,371

 
$
20,099

 
$
273

 
 
As of
 
 
December 31, 2012
 
 
Recorded
Investment
 
Performing in Accordance With Modified Terms
 
Not
Performing in Accordance With Modified Terms
 
Specific
Allowance
 
 
 
 
 
 
 
 
 
Accruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
Permanent mortgage
 
—

 
—

 
—

 
—

Permanent mortgages guaranteed by U.S. government agencies
 
38,515

 
8,755

 
29,760

 
—

Total residential mortgage
 
38,515

 
8,755

 
29,760

 
—

 
 
 
 
 
 
 
 
 
Total accruing TDRs
 
38,515

 
8,755

 
29,760

 
—

 
 
 
 
 
 
 
 
 
Total TDRs
 
$
97,985

 
$
48,126

 
$
49,859

 
$
273


A summary of troubled debt restructurings by accruing status as of June 30, 2012 were as follows (in thousands):
 
 
As of June 30, 2012
 
Amounts Charged Off During
 
 
Recorded
Investment
 
Performing in Accordance With Modified Terms
 
Not
Performing in Accordance With Modified Terms
 
Specific
Allowance
 
Three Months Ended
June 30, 2012
 
Six Months Ended
June 30, 2012
Nonaccruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
Energy
 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
 
2,700

 
1,381

 
1,319

 
—

 
—

 
—

Wholesale/retail
 
1,612

 
1,428

 
184

 
20

 
—

 
—

Manufacturing
 
—

 
—

 
—

 
—

 
—

 
—

Healthcare
 
77

 
77

 
—

 
—

 
—

 
—

Integrated food services
 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
 
779

 
—

 
779

 
—

 
—

 
—

Total commercial
 
5,168

 
2,886

 
2,282

 
20

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

 
 

Construction and land development
 
18,217

 
4,238

 
13,979

 
76

 
769

 
2,579

Retail
 
3,618

 
3,618

 
—

 
—

 
—

 
—

Office
 
3,387

 
2,489

 
898

 
—

 
—

 
269

Multifamily
 
—

 
—

 
—

 
—

 
—

 
—

Industrial
 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
 
5,730

 
1,933

 
3,797

 
103

 
—

 
2,182

Total commercial real estate
 
30,952

 
12,278

 
18,674

 
179

 
769

 
5,030

 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
6,892

 
4,327

 
2,565

 
54

 
115

 
115

Home equity
 
—

 
—

 
—

 
—

 
—

 
—

Total residential mortgage
 
6,892

 
4,327

 
2,565

 
54

 
115

 
115

 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
—

 
—

 
—

 
—

 
—

 
—

Other consumer
 
3,502

 
3,502

 
—

 
—

 
—

 
—

Total consumer
 
3,502

 
3,502

 
—

 
—

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
Total nonaccruing TDRs
 
$
46,514

 
$
22,993

 
$
23,521

 
$
253

 
$
884

 
$
5,145

 
 
As of June 30, 2012
 
Amounts Charged Off During
 
 
Recorded
Investment
 
Performing in Accordance With Modified Terms
 
Not
Performing in Accordance With Modified Terms
 
Specific
Allowance
 
Three Months Ended
June 30, 2012
 
Six Months Ended
June 30, 2012
Nonaccruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Accruing TDRs:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
 
3,655

 
2,466

 
1,189

 
—

 
32

 
112

Permanent mortgages guaranteed by U.S. government agencies
 
24,760

 
8,881

 
15,879

 
—

 
—

 
—

Total residential mortgage
 
28,415

 
11,347

 
17,068

 
—

 
32

 
112

 
 
 
 
 
 
 
 
 
 
 
 
 
Total accruing TDRs
 
28,415

 
11,347

 
17,068

 
—

 
32

 
112

 
 
 
 
 
 
 
 
 
 
 
 
 
Total TDRs
 
$
74,929

 
$
34,340

 
$
40,589

 
$
253

 
$
916

 
$
5,257

Troubled debt restructurings generally consist of interest rates concessions, payment stream concessions or a combination of concessions to distressed borrowers. The following tables detail the recorded balance of loans at June 30, 2013 by class that were restructured during the three and six months ended June 30, 2013 by primary type of concession (in thousands):

 
Three Months Ended
June 30, 2013
 
Accruing
 
Nonaccrual
 
Total
 
Payment Stream
 
Combination & Other
 
Total
 
Interest Rate
 
Payment Stream
 
Combination & Other
 
Total
 
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Energy
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
—

 
—

 
—

 
—

 
1,140

 
—

 
1,140

 
1,140

Wholesale/retail
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Manufacturing
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Healthcare
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total commercial
—

 
—

 
—

 
—

 
1,140

 
—

 
1,140

 
1,140

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
 

 

Construction and land development
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Retail
—

 
—

 
—

 
—

 
612

 
—

 
612

 
612

Office
—

 
—

 
—

 
—

 
3,181

 
—

 
3,181

 
3,181

Multifamily
—

 
—

 
—

 
—

 
990

 
—

 
990

 
990

Industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
—

 
—

 
—

 
—

 
3,931

 
—

 
3,931

 
3,931

Total commercial real estate
—

 
—

 
—

 
—

 
8,714

 
—

 
8,714

 
8,714

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
—

 
—

 
—

 
—

 
—

 
1,132

 
1,132

 
1,132

Permanent mortgage guaranteed by U.S. government agencies
3,087

 
5,809

 
8,896

 
—

 
—

 
—

 
—

 
8,896

Home equity
—

 
—

 
—

 
—

 
—

 
1,798

 
1,798

 
1,798

Total residential mortgage
3,087

 
5,809

 
8,896

 
—

 
—

 
2,930

 
2,930

 
11,826

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Indirect automobile
—

 
—

 
—

 
—

 
—

 
719

 
719

 
719

Other consumer
—

 
—

 
—

 
—

 
—

 
58

 
58

 
58

Total consumer
—

 
—

 
—

 
—

 
—

 
777

 
777

 
777

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total
$
3,087

 
$
5,809

 
$
8,896

 
$
—

 
$
9,854

 
$
3,707

 
$
13,561

 
$
22,457


 
Six Months Ended
June 30, 2013
 
Accruing
 
Nonaccrual
 
Total
 
Payment Stream
 
Combination & Other
 
Total
 
Interest Rate
 
Payment Stream
 
Combination & Other
 
Total
 
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Energy
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
—

 
—

 
—

 
—

 
1,173

 
—

 
1,173

 
1,173

Wholesale/retail
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Manufacturing
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Healthcare
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
—

 
—

 
—

 
147

 
—

 
—

 
147

 
147

Total commercial
—

 
—

 
—

 
147

 
1,173

 
—

 
1,320

 
1,320

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Construction and land development
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Retail
—

 
—

 
—

 
—

 
612

 
—

 
612

 
612

Office
—

 
—

 
—

 
—

 
3,181

 
—

 
3,181

 
3,181

Multifamily
—

 
—

 
—

 
—

 
990

 
—

 
990

 
990

Industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
—

 
—

 
—

 
—

 
3,931

 
—

 
3,931

 
3,931

Total commercial real estate
—

 
—

 
—

 
—

 
8,714

 
—

 
8,714

 
8,714

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
—

 
—

 
—

 
—

 
27

 
1,377

 
1,404

 
1,404

Permanent mortgage guaranteed by U.S. government agencies
8,694

 
8,949

 
17,643

 
—

 
—

 
—

 
—

 
17,643

Home equity
—

 
—

 
—

 
—

 
—

 
2,108

 
2,108

 
2,108

Total residential mortgage
8,694

 
8,949

 
17,643

 
—

 
27

 
3,485

 
3,512

 
21,155

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Indirect automobile
—

 
—

 
—

 
—

 
—

 
725

 
725

 
725

Other consumer
—

 
—

 
—

 
87

 
—

 
98

 
185

 
185

Total consumer
—

 
—

 
—

 
87

 
—

 
823

 
910

 
910

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total
$
8,694

 
$
8,949

 
$
17,643

 
$
234

 
$
9,914

 
$
4,308

 
$
14,456

 
$
32,099


Troubled debt restructurings generally consist of interest rates concessions, payment stream concessions or a combination of concessions to distressed borrowers. The following tables detail the recorded balance of loans by class that were restructured during the three and six months ended June 30, 2012 by primary type of concession (in thousands):

 
Three Months Ended
June 30, 2012
 
Accruing
 
Nonaccrual
 
Total
 
Payment Stream
 
Combination & Other
 
Total
 
Interest Rate
 
Payment Stream
 
Combination & Other
 
Total
 
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Energy
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
—

 
—

 
—

 
72

 
—

 
—

 
72

 
72

Wholesale/retail
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Manufacturing
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Healthcare
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total commercial
—

 
—

 
—

 
72

 
—

 
—

 
72

 
72

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Construction and land development
—

 
—

 
—

 
1,203

 
—

 
—

 
1,203

 
1,203

Retail
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Office
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Multifamily
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total commercial real estate
—

 
—

 
—

 
1,203

 
—

 
—

 
1,203

 
1,203

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
—

 
—

 
—

 
—

 
—

 
23

 
23

 
23

Permanent mortgage guaranteed by U.S. government agencies
—

 
1,350

 
1,350

 
—

 
—

 
—

 
—

 
1,350

Home equity
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total residential mortgage
—

 
1,350

 
1,350

 
—

 
—

 
23

 
23

 
1,373

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Indirect automobile
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other consumer
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total consumer
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total
$
—

 
$
1,350

 
$
1,350

 
$
1,275

 
$
—

 
$
23

 
$
1,298

 
$
2,648


 
Six Months Ended
June 30, 2012
 
Accruing
 
Nonaccrual
 
Total
 
Payment Stream
 
Combination & Other
 
Total
 
Interest Rate
 
Payment Stream
 
Combination & Other
 
Total
 
Commercial:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Energy
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
—

 
—

 
—

 
72

 
—

 
—

 
72

 
72

Wholesale/retail
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Manufacturing
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Healthcare
—

 
—

 
—

 
—

 
—

 
77

 
77

 
77

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total commercial
—

 
—

 
—

 
72

 
—

 
77

 
149

 
149

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Construction and land development
—

 
—

 
—

 
1,302

 
—

 
—

 
1,302

 
1,302

Retail
—

 
—

 
—

 
2,418

 
—

 
—

 
2,418

 
2,418

Office
—

 
—

 
—

 
1,387

 
—

 
—

 
1,387

 
1,387

Multifamily
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Industrial
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
—

 
—

 
—

 
—

 
1,636

 
—

 
1,636

 
1,636

Total commercial real estate
—

 
—

 
—

 
5,107

 
1,636

 
—

 
6,743

 
6,743

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
—

 
4,136

 
4,136

 
—

 
—

 
810

 
810

 
4,946

Permanent mortgage guaranteed by U.S. government agencies
—

 
151

 
151

 
—

 
—

 
—

 
—

 
151

Home equity
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Total residential mortgage
—

 
4,287

 
4,287

 
—

 
—

 
810

 
810

 
5,097

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Indirect automobile
—

 
—

 
—

 
—

 
—

 
—

 
—

 
—

Other consumer
—

 
—

 
—

 
373

 
—

 
2,995

 
3,368

 
3,368

Total consumer
—

 
—

 
—

 
373

 
—

 
2,995

 
3,368

 
3,368

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Total
$
—

 
$
4,287

 
$
4,287

 
$
5,552

 
$
1,636

 
$
3,882

 
$
11,070

 
$
15,357


The following table summarizes, by loan class, the recorded investment at June 30, 2013 of loans modified as TDRs within the previous 12 months and for which there was a payment default during the three and six months ended June 30, 2013 (in thousands):

 
Three Months Ended
June 30, 2013
 
Six Months Ended
June 30, 2013
 
Accruing
 
Nonaccrual
 
Total
 
Accruing
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
 
Energy
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
—

 
2,007

 
2,007

 
—

 
2,007

 
2,007

Wholesale/retail
—

 
—

 
—

 
—

 
—

 
—

Manufacturing
—

 
—

 
—

 
—

 
—

 
—

Healthcare
—

 
—

 
—

 
—

 
—

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
—

 
—

 
—

 
—

 
33

 
33

Total commercial
—

 
2,007

 
2,007

 
—

 
2,040

 
2,040

 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
Construction and land development
—

 
6,889

 
6,889

 
—

 
6,889

 
6,889

Retail
—

 
612

 
612

 
—

 
612

 
612

Office
—

 
3,181

 
3,181

 
—

 
3,181

 
3,181

Multifamily
—

 
782

 
782

 
—

 
990

 
990

Industrial
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
—

 
3,398

 
3,398

 
—

 
3,931

 
3,931

Total commercial real estate
—

 
14,862

 
14,862

 
—

 
15,603

 
15,603

 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
—

 
1,949

 
1,949

 
—

 
1,969

 
1,969

Permanent mortgage guaranteed by U.S. government agencies
22,784

 
—

 
22,784

 
26,767

 
—

 
26,767

Home equity
—

 
240

 
240

 
—

 
371

 
371

Total residential mortgage
22,784

 
2,189

 
24,973

 
26,767

 
2,340

 
29,107

 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
Indirect automobile
—

 
61

 
61

 
—

 
98

 
98

Other consumer
—

 
24

 
24

 
—

 
24

 
24

Total consumer
—

 
85

 
85

 
—

 
122

 
122

 
 
 
 
 
 
 
 
 
 
 
 
Total
$
22,784

 
$
19,143

 
$
41,927

 
$
26,767

 
$
20,105

 
$
46,872


A payment default is defined as being 30 days or more past due. The table above includes loans that experienced a payment default during the period, but may be performing in accordance with the modified terms as of the balance sheet date.

The following table summarizes, by loan class, the recorded investment at June 30, 2012 of loans modified as TDRs within the previous 12 months and for which there was a payment default during the three and six months ended June 30, 2012 (in thousands):
 
Three Months Ended
June 30, 2012
 
Six Months Ended
June 30, 2012
 
Accruing
 
Nonaccrual
 
Total
 
Accruing
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
 
Energy
$
—

 
$
—

 
$
—

 
$
—

 
$
—

 
$
—

Services
—

 
—

 
—

 
—

 
—

 
—

Wholesale/retail
—

 
—

 
—

 
—

 
—

 
—

Manufacturing
—

 
—

 
—

 
—

 
—

 
—

Healthcare
—

 
—

 
—

 
—

 
—

 
—

Integrated food services
—

 
—

 
—

 
—

 
—

 
—

Other commercial and industrial
—

 
—

 
—

 
—

 
—

 
—

Total commercial
—

 
—

 
—

 
—

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 
 
 
 
 
 
 
 
 
 
Construction and land development
—

 
1,203

 
1,203

 
—

 
1,203

 
1,203

Retail
—

 
—

 
—

 
—

 
2,418

 
2,418

Office
—

 
—

 
—

 
—

 
1,387

 
1,387

Multifamily
—

 
—

 
—

 
—

 
—

 
—

Industrial
—

 
—

 
—

 
—

 
—

 
—

Other real estate loans
—

 
—

 
—

 
—

 
—

 
—

Total commercial real estate
—

 
1,203

 
1,203

 
—

 
5,008

 
5,008

 
 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 
 
 
 
 
 
 
 
 
 
Permanent mortgage
—

 
23

 
23

 
—

 
23

 
23

Permanent mortgage guaranteed by U.S. government agencies
492

 
—

 
492

 
2,096

 
—

 
2,096

Home equity
—

 
—

 
—

 
—

 
—

 
—

Total residential mortgage
492

 
23

 
515

 
2,096

 
23

 
2,119

 
 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 
 
 
 
 
 
 
 
 
 
Indirect automobile
—

 
—

 
—

 
—

 
—

 
—

Other consumer
—

 
—

 
—

 
—

 
—

 
—

Total consumer
—

 
—

 
—

 
—

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
Total
$
492

 
$
1,226

 
$
1,718

 
$
2,096

 
$
5,031

 
$
7,127

Summary of Loans by Aging Status [Table Text Block] 
Nonaccrual & Past Due Loans

Past due status for all loan classes is based on the actual number of days since the last payment was due according to the contractual terms of the loans.

A summary of loans currently performing, loans past due and accruing and nonaccrual loans as of June 30, 2013 is as follows (in thousands):
 
 
 
 
Past Due
 
 
 
 
 
 
Current
 
30 to 89
Days
 
90 Days
or More
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,382,377

 
$
92

 
$
—

 
$
2,277

 
$
2,384,746

Services
 
2,192,771

 
1,769

 
2,265

 
7,448

 
2,204,253

Wholesale/retail
 
1,168,686

 
—

 
157

 
6,700

 
1,175,543

Manufacturing
 
385,257

 
—

 
—

 
876

 
386,133

Healthcare
 
1,115,187

 
953

 
—

 
2,670

 
1,118,810

Integrated food services
 
163,551

 
—

 
—

 
—

 
163,551

Other commercial and industrial
 
274,007

 
160

 
19

 
898

 
275,084

Total commercial
 
7,681,836

 
2,974

 
2,441

 
20,869

 
7,708,120

 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

Construction and land development
 
204,519

 
—

 
—

 
21,135

 
225,654

Retail
 
542,946

 
2,060

 
—

 
8,406

 
553,412

Office
 
451,730

 
—

 
—

 
7,828

 
459,558

Multifamily
 
492,306

 
1,699

 
—

 
6,447

 
500,452

Industrial
 
253,990

 
—

 
—

 
—

 
253,990

Other real estate loans
 
308,373

 
780

 
—

 
14,877

 
324,030

Total commercial real estate
 
2,253,864

 
4,539

 
—

 
58,693

 
2,317,096

 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
1,054,435

 
8,689

 
—

 
32,747

 
1,095,871

Permanent mortgages guaranteed by U.S. government agencies
 
22,328

 
17,670

 
116,806

 
83

 
156,887

Home equity
 
776,872

 
2,451

 
—

 
7,704

 
787,027

Total residential mortgage
 
1,853,635

 
28,810

 
116,806

 
40,534

 
2,039,785

 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
14,827

 
540

 
—

 
1,188

 
16,555

Other consumer
 
356,416

 
1,942

 
19

 
849

 
359,226

Total consumer
 
371,243

 
2,482

 
19

 
2,037

 
375,781

 
 
 
 
 
 
 
 
 
 
 
Total
 
$
12,160,578

 
$
38,805

 
$
119,266

 
$
122,133

 
$
12,440,782


A summary of loans currently performing, loans past due and accruing and nonaccrual loans as of December 31, 2012 is as follows (in thousands):

 
 
 
 
Past Due
 
 
 
 
 
 
Current
 
30 to 89
Days
 
90 Days
or More
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,454,928

 
$
3,071

 
$
200

 
$
2,460

 
$
2,460,659

Services
 
2,150,386

 
1,710

 
—

 
12,090

 
2,164,186

Wholesale/retail
 
1,103,307

 
5

 
50

 
3,077

 
1,106,439

Manufacturing
 
346,442

 
35

 
—

 
2,007

 
348,484

Healthcare
 
1,077,022

 
1,040

 
178

 
3,166

 
1,081,406

Integrated food services
 
190,416

 
6

 
—

 
684

 
191,106

Other commercial and industrial
 
288,522

 
127

 
—

 
983

 
289,632

Total commercial
 
7,611,023

 
5,994

 
428

 
24,467

 
7,641,912

 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

Construction and land development
 
226,962

 
—

 
—

 
26,131

 
253,093

Retail
 
514,252

 
349

 
68

 
8,117

 
522,786

Office
 
417,866

 
3,177

 
—

 
6,829

 
427,872

Multifamily
 
400,151

 
39

 
—

 
2,706

 
402,896

Industrial
 
242,026

 
—

 
—

 
3,968

 
245,994

Other real estate loans
 
358,030

 
2,092

 
3,361

 
12,875

 
376,358

Total commercial real estate
 
2,159,287

 
5,657

 
3,429

 
60,626

 
2,228,999

 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
1,075,687

 
8,366

 
49

 
39,863

 
1,123,965

Permanent mortgages guaranteed by U.S. government agencies
 
26,560

 
13,046

 
120,349

 
489

 
160,444

Home equity
 
752,100

 
2,275

 
—

 
6,256

 
760,631

Total residential mortgage
 
1,854,347

 
23,687

 
120,398

 
46,608

 
2,045,040

 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
31,869

 
1,273

 
15

 
1,578

 
34,735

Other consumer
 
358,308

 
1,327

 
4

 
1,131

 
360,770

Total consumer
 
390,177

 
2,600

 
19

 
2,709

 
395,505

 
 
 
 
 
 
 
 
 
 
 
Total
 
$
12,014,834

 
$
37,938

 
$
124,274

 
$
134,410

 
$
12,311,456

A summary of loans currently performing, loans past due and accruing and nonaccrual loans as of June 30, 2012 is as follows (in thousands):

 
 
 
 
Past Due
 
 
 
 
 
 
Current
 
30 to 89
Days
 
90 Days
or More
 
Nonaccrual
 
Total
Commercial:
 
 
 
 
 
 
 
 
 
 
Energy
 
$
2,263,505

 
$
2,260

 
$
—

 
$
3,087

 
$
2,268,852

Services
 
1,974,465

 
3,705

 
37

 
10,123

 
1,988,330

Wholesale/retail
 
940,975

 
1,534

 
—

 
4,175

 
946,684

Manufacturing
 
334,856

 
—

 
—

 
12,230

 
347,086

Healthcare
 
980,750

 
180

 
100

 
3,310

 
984,340

Integrated food services
 
201,366

 
4,903

 
—

 
—

 
206,269

Other commercial and industrial
 
291,781

 
589

 
—

 
1,604

 
293,974

Total commercial
 
6,987,698

 
13,171

 
137

 
34,529

 
7,035,535

 
 
 
 
 
 
 
 
 
 
 
Commercial real estate:
 
 

 
 

 
 

 
 

 
 

Construction and land development
 
245,246

 
801

 
—

 
46,050

 
292,097

Retail
 
492,612

 
5,626

 
—

 
7,908

 
506,146

Office
 
384,225

 
525

 
—

 
10,589

 
395,339

Multifamily
 
354,455

 
742

 
—

 
3,219

 
358,416

Industrial
 
228,333

 
392

 
—

 
—

 
228,725

Other real estate loans
 
353,231

 
3,328

 
—

 
12,448

 
369,007

Total commercial real estate
 
2,058,102

 
11,414

 
—

 
80,214

 
2,149,730

 
 
 
 
 
 
 
 
 
 
 
Residential mortgage:
 
 

 
 

 
 

 
 

 
 

Permanent mortgage
 
1,111,078

 
15,130

 
495

 
18,136

 
1,144,839

Permanent mortgages guaranteed by U.S. government agencies
 
20,641

 
14,473

 
127,126

 
—

 
162,240

Home equity
 
688,960

 
2,211

 
44

 
4,591

 
695,806

Total residential mortgage
 
1,820,679

 
31,814

 
127,665

 
22,727

 
2,002,885

 
 
 
 
 
 
 
 
 
 
 
Consumer:
 
 

 
 

 
 

 
 

 
 

Indirect automobile
 
58,909

 
1,771

 
1

 
2,257

 
62,938

Other consumer
 
319,856

 
718

 
14

 
4,755

 
325,343

Total consumer
 
378,765

 
2,489

 
15

 
7,012

 
388,281

 
 
 
 
 
 
 
 
 
 
 
Total
 
$
11,245,244

 
$
58,888

 
$
127,817

 
$
144,482

 
$
11,576,431

Mortgage Banking Activities (Tables)
Components of Residential Mortgage Loans Held For Sale [Table Text Block] 
 
 
June 30, 2013
 
December 31, 2012
 
June 30, 2012
 
 
Unpaid Principal Balance/
Notional
 
Fair Value
 
Unpaid Principal Balance/
Notional
 
Fair Value
 
Unpaid
Principal
 Balance/
Notional
 
Fair Value
Residential mortgage loans held for sale
 
$
284,454

 
$
280,962

 
$
269,718

 
$
281,935

 
$
236,160

 
$
247,893

Residential mortgage loan commitments
 
547,508

 
(1,709
)
 
356,634

 
12,733

 
392,247

 
15,807

Forward sales contracts
 
740,752

 
21,804

 
598,442

 
(906
)
 
605,856

 
(4,526
)
 
 
 

 
$
301,057

 
 

 
$
293,762

 
 

 
$
259,174

Mortgage Banking Revenue [Table Text Block] 
Mortgage banking revenue was as follows (in thousands):
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30, 2013
 
June 30, 2012
 
June 30, 2013
 
June 30, 2012
Originating and marketing revenue:
 
 
 
 
 
 
 
 
Residential mortgages loan held for sale
 
$
17,763

 
$
27,706

 
$
47,998

 
$
44,798

Residential mortgage loan commitments
 
(15,052
)
 
6,900

 
(14,442
)
 
9,210

Forward sales contracts
 
23,645

 
(4,917
)
 
22,710

 
(1,238
)
Total originating and marketing revenue
 
26,356

 
29,689

 
56,266

 
52,770

Servicing revenue
 
10,240

 
9,859

 
20,306

 
19,856

Total mortgage banking revenue
 
$
36,596

 
$
39,548

 
$
76,572

 
$
72,626

Summary of Mortgage Servicing Rights [Table Text Block] 
The following represents a summary of mortgage servicing rights (Dollars in thousands):
 
 
June 30, 2013
 
December 31, 2012
 
June 30, 2012
Number of residential mortgage loans serviced for others
 
101,498

 
98,246

 
96,772

Outstanding principal balance of residential mortgage loans serviced for others
 
$
12,741,651

 
$
11,981,624

 
$
11,564,643

Weighted average interest rate
 
4.47
%
 
4.71
%
 
4.99
%
Remaining term (in months)
 
291

 
289

 
289

Activity in Capitalized Mortgage Servicing Rights [Table Text Block] 
Activity in capitalized mortgage servicing rights during the three months ended June 30, 2013 was as follows (in thousands):
 
 
Purchased
 
Originated
 
Total
Balance, Mar. 31, 2013
 
$
13,203

 
$
96,637

 
$
109,840

Additions, net
 
—

 
14,499

 
14,499

Change in fair value due to loan runoff
 
(940
)
 
(4,825
)
 
(5,765
)
Change in fair value due to market changes
 
3,319

 
10,996

 
14,315

Balance, June 30, 2013
 
$
15,582

 
$
117,307

 
$
132,889


Activity in capitalized mortgage servicing rights during the six months ended June 30, 2013 was as follows (in thousands):
 
 
Purchased
 
Originated
 
Total
Balance, December 31, 2012
 
$
12,976

 
$
87,836

 
$
100,812

Additions, net
 
—

 
25,932

 
25,932

Change in fair value due to loan runoff
 
(1,811
)
 
(9,017
)
 
(10,828
)
Change in fair value due to market changes
 
4,417

 
12,556

 
16,973

Balance, June 30, 2013
 
$
15,582

 
$
117,307

 
$
132,889


Activity in capitalized mortgage servicing rights during the three months ended June 30, 2012 was as follows (in thousands):
 
 
Purchased
 
Originated
 
Total
Balance, Mar. 31, 2012
 
$
21,204

 
$
76,934

 
$
98,138

Additions, net
 
—

 
9,275

 
9,275

Change in fair value due to loan runoff
 
(950
)
 
(3,230
)
 
(4,180
)
Change in fair value due to market changes
 
(3,893
)
 
(7,557
)
 
(11,450
)
Balance, June 30, 2012
 
$
16,361

 
$
75,422

 
$
91,783


Activity in capitalized mortgage servicing rights during the six months ended June 30, 2012 was as follows (in thousands):
 
 
Purchased
 
Originated
 
Total
Balance, December 31, 2011
 
$
18,903

 
$
67,880

 
$
86,783

Additions, net
 
—

 
17,647

 
17,647

Change in fair value due to loan runoff
 
(1,960
)
 
(6,364
)
 
(8,324
)
Change in fair value due to market changes
 
(582
)
 
(3,741
)
 
(4,323
)
Balance, June 30, 2012
 
$
16,361

 
$
75,422

 
$
91,783

Assumptions to Value Mortgage Servicing Rights [Table Text Block] 

There is no active market for trading in mortgage servicing rights after origination. Fair value is determined by discounting the projected net cash flows. Significant assumptions used to determine fair value based on significant unobservable input were as follows:

 
 
June 30, 2013
 
December 31, 2012
 
June 30, 2012
Discount rate – risk-free rate plus a market premium
 
10.25%
 
10.29%
 
10.33%
Prepayment rate – based upon loan interest rate, original term and loan type
 
7.00% - 32.30%
 
8.38% - 43.94%
 
11.44% - 53.10%
Loan servicing costs – annually per loan based upon loan type:
 
 
 
 
 
 
    Performing loans
 
$58 - $105
 
$55 - $105
 
$55 - $105
    Delinquent loans
 
$135 - $500
 
$135 - $500
 
$135 - $500
    Loans in foreclosure
 
$875 - $4,250
 
$875 - $4,250
 
$875 - $3,750
Escrow earnings rate – indexed to rates paid on deposit accounts with comparable average life
 
1.56%
 
0.87%
 
1.28%
Stratification of Loan Servicing Portfolio [Table Text Block] 
Stratification of the residential mortgage loan servicing portfolio and outstanding principal of loans serviced for others by interest rate at June 30, 2013 follows (in thousands):
 
 
< 4.00%
 
4.00% - 4.99%

 
5.00% - 5.99%

 
> 5.99%
 
Total
Fair value
 
$
57,807

 
$
41,673

 
$
26,815

 
$
6,594

 
$
132,889

Outstanding principal of loans serviced for others
 
$
5,075,651

 
$
3,739,420

 
$
2,551,306

 
$
1,375,274

 
$
12,741,651

Weighted average prepayment rate1
 
7.00
%
 
8.51
%
 
12.70
%
 
32.30
%
 
11.31
%
1 
Annual prepayment estimates based upon loan interest rate, original term and loan type. Weighted average prepayment rate is determined by weighting the prepayment speed for each loan by its unpaid principal balance.

Aging Status of Mortgage Loans Serviced For Others [Table Text Block] 
The aging status of our mortgage loans serviced for others by investor at June 30, 2013 follows (in thousands):
 
 
 
 
Past Due
 
 
 
 
Current
 
30 to 59
Days
 
60 to 89
Days
 
90 Days or More
 
Total
FHLMC
 
$
4,496,062

 
$
41,399

 
$
9,992

 
$
36,381

 
$
4,583,834

FNMA
 
3,409,245

 
24,891

 
5,136

 
16,941

 
3,456,213

GNMA
 
4,245,789

 
143,568

 
31,781

 
13,973

 
4,435,111

Other
 
258,397

 
2,103

 
620

 
5,373

 
266,493

Total
 
$
12,409,493

 
$
211,961

 
$
47,529

 
$
72,668

 
$
12,741,651

Activity in Allowance for Losses On Loans Sold With Recourse [Table Text Block] 
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2013
 
2012
 
2013
 
2012
Beginning balance
 
$
10,075

 
$
18,651

 
$
11,359

 
$
18,683

Provision for recourse losses
 
430

 
768

 
(331
)
 
2,440

Loans charged off, net
 
(840
)
 
(1,587
)
 
(1,363
)
 
(3,291
)
Ending balance
 
$
9,665

 
$
17,832

 
$
9,665

 
$
17,832

Summary of Unresolved Deficiency Requests and Related Accrual for Credit Losses [Table Text Block] 
A summary of unresolved deficiency requests from the agencies and related accrual for credit losses follows (in thousands):
 
June 30, 2013
 
December 31, 2012
Number of unresolved deficiency requests
464

 
389

Aggregate outstanding principal balance subject to unresolved deficiency requests
$
55,517

 
$
44,831

Unpaid principal balance subject to indemnification by the Company
1,774

 
1,233

Accrual for credit losses related to potential loan repurchases under representations and warranties
6,181

 
5,291

Commitments and Contingent Liabilities Commitments and Contingent Liabilities - Variable Interest Entities (Tables)
Schedule of Variable Interest Entities [Table Text Block]
A summary of consolidated and unconsolidated alternative investments as of June 30, 2013, December 31, 2012 and June 30, 2012 is as follows (in thousands):

 
 
June 30, 2013
 
 
Loans
 
Other
assets
 
Other
liabilities
 
Other
borrowings
 
Non-controlling
interest
Consolidated:
 
 
 
 
 
 
 
 
 
 
Private equity funds
 
$
—

 
$
28,379

 
$
—

 
$
—

 
$
23,418

Tax credit entities
 
10,000

 
13,706

 
—

 
10,964

 
10,000

Other
 
—

 
8,483

 
—

 
—

 
1,827

Total consolidated
 
$
10,000

 
$
50,568

 
$
—

 
$
10,964

 
$
35,245

 
 
 
 
 
 
 
 
 
 
 
Unconsolidated:
 
 
 
 
 
 
 
 
 
 
Tax credit entities
 
$
26,851

 
$
86,327

 
$
37,864

 
$
—

 
$
—

Other
 
—

 
9,371

 
1,775

 
—

 
—

Total unconsolidated
 
$
26,851

 
$
95,698

 
$
39,639

 
$
—

 
$
—


 
 
December 31, 2012
 
 
Loans
 
Other
assets
 
Other
liabilities
 
Other
borrowings
 
Non-controlling
interest
Consolidated:
 
 
 
 
 
 
 
 
 
 
Private equity funds
 
$
—

 
$
28,169

 
$
—

 
$
—

 
$
23,691

Tax credit entities
 
10,000

 
13,965

 
—

 
10,964

 
10,000

Other
 
—

 
8,952

 
—

 
—

 
2,130

Total consolidated
 
$
10,000

 
$
51,086

 
$
—

 
$
10,964

 
$
35,821

 
 
 
 
 
 
 
 
 
 
 
Unconsolidated:
 
 
 
 
 
 
 
 
 
 
Tax credit entities
 
$
22,354

 
$
78,109

 
$
43,052

 
$
—

 
$
—

Other
 
—

 
9,113

 
1,802

 
—

 
—

Total unconsolidated
 
$
22,354

 
$
87,222

 
$
44,854

 
$
—

 
$
—


 
 
June 30, 2012
 
 
Loans
 
Other
assets
 
Other
liabilities
 
Other
borrowings
 
Non-controlling
interest
Consolidated:
 
 
 
 
 
 
 
 
 
 
Private equity funds
 
$
—

 
$
31,492

 
$
—

 
$
—

 
$
26,648

Tax credit entities
 
10,000

 
14,224

 
—

 
10,964

 
10,000

Other
 
—

 
7,031

 
—

 
—

 
139

Total consolidated
 
$
10,000

 
$
52,747

 
$
—

 
$
10,964

 
$
36,787

 
 
 
 
 
 
 
 
 
 
 
Unconsolidated:
 
 
 
 
 
 
 
 
 
 
Tax credit entities
 
$
13,626

 
$
71,298

 
$
39,510

 
$
—

 
$
—

Other
 
—

 
9,298

 
1,943

 
—

 
—

Total unconsolidated
 
$
13,626

 
$
80,596

 
$
41,453

 
$
—

 
$
—

Shareholders' Equity (Tables)
Accumulated Other Comprehensive Income (Loss) [Table Text Block]
 
 
Unrealized Gain (Loss) on
 
 
 
 
 
 
Available for Sale Securities
 
Investment Securities Transferred from AFS
 
Employee Benefit Plans
 
Loss on Effective Cash Flow Hedges
 
Total
Balance, December 31, 2011
 
$
135,740

 
$
6,673

 
$
(12,742
)
 
$
(692
)
 
$
128,979

Net change in unrealized gain (loss)
 
40,325

 
—

 
(291
)
 
—

 
40,034

Reclassification adjustments included in earnings:
 
 
 
 
 
 
 
 
 
 
Interest revenue, Investment securities, Taxable securities
 
—

 
(3,421
)
 
—

 
—

 
(3,421
)
Interest expense, Subordinated debentures
 
—

 
—

 
—

 
331

 
331

Net impairment losses recognized in earnings
 
4,580

 
—

 
—

 
—

 
4,580

Gain on available for sale securities, net
 
(24,812
)
 
—

 
—

 
—

 
(24,812
)
Other comprehensive income (loss), before income taxes
 
20,093

 
(3,421
)
 
(291
)
 
331

 
16,712

Income tax benefit (expense)1
 
(7,816
)
 
1,331

 
113

 
(129
)
 
(6,501
)
Other comprehensive income (loss), net of income taxes
 
12,277

 
(2,090
)
 
(178
)
 
202

 
10,211

Balance, June 30, 2012
 
$
148,017

 
$
4,583

 
$
(12,920
)
 
$
(490
)
 
$
139,190

 
 
 
 
 
 
 
 
 
 
 
Balance, December 31, 2012
 
$
155,553

 
$
3,078

 
$
(8,296
)
 
$
(415
)
 
$
149,920

Net change in unrealized gains (losses)
 
(204,545
)
 
—

 
—

 
—

 
(204,545
)
Reclassification adjustments included in earnings:
 
 
 
 
 
 
 
 
 
 
Interest revenue, Investment securities, Taxable securities
 
—

 
(2,021
)
 
—

 
—

 
(2,021
)
Interest expense, Subordinated debentures
 
—

 
—

 
—

 
124

 
124

Net impairment losses recognized in earnings
 
799

 
—

 
—

 
—

 
799

Gain on available for sale securities, net
 
(8,608
)
 
—

 
—

 
—

 
(8,608
)
Other comprehensive income (loss), before income taxes
 
(212,354
)
 
(2,021
)
 
—

 
124

 
(214,251
)
Income tax benefit (expense)1
 
82,605

 
788

 
—

 
(48
)
 
83,345

Other comprehensive income (loss), net of income taxes
 
(129,749
)
 
(1,233
)
 
—

 
76

 
(130,906
)
Balance, June 30, 2013
 
$
25,804

 
$
1,845

 
$
(8,296
)
 
$
(339
)
 
$
19,014

Earnings Per Share (Tables)
Earnings Per Share [Table Text Block]
(In thousands, except share and per share amounts)
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2013
 
2012
 
2013
 
2012
Numerator:
 
 
 
 
 
 
 
 
Net income attributable to BOK Financial Corp. shareholders
 
$
79,931

 
$
97,628

 
$
167,895

 
$
181,243

Less: Earnings allocated to participating securities
 
854

 
977

 
1,825

 
1,716

Numerator for basic earnings per share – income available to common shareholders
 
79,077

 
96,651

 
166,070

 
179,527

Effect of reallocating undistributed earnings of participating securities
 
2

 
3

 
4

 
5

Numerator for diluted earnings per share – income available to common shareholders
 
$
79,079

 
$
96,654

 
$
166,074

 
$
179,532

 
 
 
 
 
 
 
 
 
Denominator:
 
 

 
 

 
 

 
 

Weighted average shares outstanding
 
68,719,694

 
68,152,242

 
68,645,247

 
68,214,648

Less:  Participating securities included in weighted average shares outstanding
 
725,872

 
679,577

 
740,648

 
641,368

Denominator for basic earnings per common share
 
67,993,822

 
67,472,665

 
67,904,599

 
67,573,280

Dilutive effect of employee stock compensation plans1
 
218,675

 
272,163

 
222,152

 
274,379

Denominator for diluted earnings per common share
 
68,212,497

 
67,744,828

 
68,126,751

 
67,847,659

 
 
 
 
 
 
 
 
 
Basic earnings per share
 
$
1.16

 
$
1.43

 
$
2.45

 
$
2.66

Diluted earnings per share
 
$
1.16

 
$
1.43

 
$
2.44

 
$
2.65

1  Excludes employee stock options with exercise prices greater than current market price.
 
—

 
366,407

 
—

 
361,558

Reportable Segments (Tables)
Reportable Segments [Table Text Block]
Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended June 30, 2013 is as follows (in thousands):
 
 
Commercial
 
Consumer
 
Wealth
Management
 
Funds Management and Other
 
BOK
Financial
Consolidated
Net interest revenue from external sources
 
$
90,505

 
$
24,830

 
$
6,557

 
$
45,264

 
$
167,156

Net interest revenue (expense) from internal sources
 
(9,375
)
 
5,167

 
$
5,093

 
(885
)
 
—

Net interest revenue
 
81,130

 
29,997

 
11,650

 
44,379

 
167,156

Provision for credit losses
 
86

 
1,402

 
931

 
(2,419
)
 
—

Net interest revenue after provision for credit losses
 
81,044

 
28,595

 
10,719

 
46,798

 
167,156

Other operating revenue
 
43,411

 
47,993

 
55,164

 
4,193

 
150,761

Other operating expense
 
59,746

 
43,320

 
61,692

 
31,848

 
196,606

Net income before taxes
 
64,709

 
33,268

 
4,191

 
19,143

 
121,311

Federal and state income taxes
 
25,172

 
12,941

 
1,630

 
1,680

 
41,423

Net income
 
39,537

 
20,327

 
2,561

 
17,463

 
79,888

Net loss attributable to non-controlling interest
 
—

 
—

 
—

 
(43
)
 
(43
)
Net income attributable to BOK Financial Corp. shareholders
 
$
39,537

 
$
20,327

 
$
2,561

 
$
17,506

 
$
79,931

 
 
 
 
 
 
 
 
 
 
 
Average assets
 
$
10,359,660

 
$
5,695,098

 
$
4,543,947

 
$
7,060,619

 
$
27,659,324

Average invested capital
 
899,088

 
297,675

 
206,216

 
1,624,675

 
3,027,654

 
 
 
 
 
 
 
 
 
 
 
Performance measurements:
 
 

 
 

 
 

 
 

 
 

Return on average assets
 
1.53
%
 
1.43
%
 
0.23
%
 


 
1.16
%
Return on average invested capital
 
17.64
%
 
27.39
%
 
4.99
%
 


 
10.59
%
Efficiency ratio
 
48.00
%
 
63.10
%
 
92.43
%
 


 
63.11
%

Reportable segments reconciliation to the Consolidated Financial Statements for the six months ended June 30, 2013 is as follows (in thousands):
 
 
Commercial
 
Consumer
 
Wealth
Management
 
Funds Management and Other
 
BOK
Financial
Consolidated
Net interest revenue from external sources
 
$
181,349

 
$
48,925

 
$
13,073

 
$
94,214

 
$
337,561

Net interest revenue (expense) from internal sources
 
(18,502
)
 
10,650

 
$
10,371

 
(2,519
)
 
—

Net interest revenue
 
162,847

 
59,575

 
23,444

 
91,695

 
337,561

Provision for credit losses
 
1,107

 
2,332

 
1,449

 
(12,888
)
 
(8,000
)
Net interest revenue after provision for credit losses
 
161,740

 
57,243

 
21,995

 
104,583

 
345,561

Other operating revenue
 
84,843

 
105,135

 
107,767

 
12,090

 
309,835

Other operating expense
 
118,826

 
95,690

 
118,701

 
64,713

 
397,930

Net income before taxes
 
127,757

 
66,688

 
11,061

 
51,960

 
257,466

Federal and state income taxes
 
49,697

 
25,942

 
4,303

 
8,577

 
88,519

Net income
 
78,060

 
40,746

 
6,758

 
43,383

 
168,947

Net income attributable to non-controlling interest
 
—

 
—

 
—

 
1,052

 
1,052

Net income attributable to BOK Financial Corp. shareholders
 
$
78,060

 
$
40,746

 
$
6,758

 
$
42,331

 
$
167,895

 
 
 
 
 
 
 
 
 
 
 
Average assets
 
$
10,486,541

 
$
5,709,448

 
$
4,615,054

 
$
6,775,738

 
$
27,586,781

Average invested capital
 
895,749

 
297,376

 
204,158

 
1,615,545

 
3,012,828

 
 
 
 
 
 
 
 
 
 
 
Performance measurements:
 
 

 
 

 
 

 
 

 
 

Return on average assets
 
1.50
%
 
1.44
%
 
0.29
%
 


 
1.23
%
Return on average invested capital
 
17.57
%
 
27.63
%
 
6.66
%
 


 
11.24
%
Efficiency ratio
 
47.99
%
 
61.19
%
 
90.87
%
 


 
62.07
%


Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended June 30, 2012 is as follows (in thousands):
 
 
Commercial
 
Consumer
 
Wealth
Management
 
Funds Management and Other
 
BOK
Financial
Consolidated
Net interest revenue from external sources
 
$
93,549

 
$
25,723

 
$
7,137

 
$
54,952

 
$
181,361

Net interest revenue (expense) from internal sources
 
(11,439
)
 
4,803

 
5,194

 
1,442

 
—

Net interest revenue
 
82,110

 
30,526

 
12,331

 
56,394

 
181,361

Provision for credit losses
 
748

 
4,221

 
521

 
(13,490
)
 
(8,000
)
Net interest revenue after provision for credit losses
 
81,362

 
26,305

 
11,810

 
69,884

 
189,361

Other operating revenue
 
52,158

 
74,520

 
51,556

 
8,026

 
186,260

Other operating expense
 
62,625

 
75,602

 
53,264

 
31,520

 
223,011

Net income before taxes
 
70,895

 
25,223

 
10,102

 
46,390

 
152,610

Federal and state income taxes
 
27,578

 
9,812

 
3,930

 
11,829

 
53,149

Net income
 
43,317

 
15,411

 
6,172

 
34,561

 
99,461

Net loss attributable to non-controlling interest
 
—

 
—

 
—

 
1,833

 
1,833

Net income attributable to BOK Financial Corp. shareholders
 
$
43,317

 
$
15,411

 
$
6,172

 
$
32,728

 
$
97,628

 
 
 
 
 
 
 
 
 
 
 
Average assets
 
$
9,865,389

 
$
5,660,601

 
$
4,166,137

 
$
5,846,390

 
$
25,538,517

Average invested capital
 
862,816

 
289,443

 
176,703

 
1,539,771

 
2,868,733

 
 
 
 
 
 
 
 
 
 
 
Performance measurements:
 
 

 
 

 
 

 
 

 
 

Return on average assets
 
1.77
%
 
1.09
%
 
0.59
%
 
 
 
1.54
%
Return on average invested capital
 
20.19
%
 
21.41
%
 
14.01
%
 
 
 
13.69
%
Efficiency ratio
 
52.23
%
 
67.66
%
 
83.80
%
 
 
 
61.98
%

Reportable segments reconciliation to the Consolidated Financial Statements for the six months ended June 30, 2012 is as follows (in thousands):

 
 
Commercial
 
Consumer
 
Wealth
Management
 
Funds Management and Other
 
BOK
Financial
Consolidated
Net interest revenue from external sources
 
$
183,041

 
$
52,310

 
$
14,277

 
$
105,302

 
$
354,930

Net interest revenue (expense) from internal sources
 
(23,488
)
 
9,683

 
10,051

 
3,754

 
—

Net interest revenue
 
159,553

 
61,993

 
24,328

 
109,056

 
354,930

Provision for credit losses
 
7,140

 
5,653

 
1,171

 
(21,964
)
 
(8,000
)
Net interest revenue after provision for credit losses
 
152,413

 
56,340

 
23,157

 
131,020

 
362,930

Other operating revenue
 
90,950

 
124,760

 
97,949

 
9,882

 
323,541

Other operating expense
 
118,485

 
122,913

 
104,589

 
59,161

 
405,148

Net income before taxes
 
124,878

 
58,187

 
16,517

 
81,741

 
281,323

Federal and state income taxes
 
48,578

 
22,635

 
6,425

 
21,031

 
98,669

Net income
 
76,300

 
35,552

 
10,092

 
60,710

 
182,654

Net income attributable to non-controlling interest
 
—

 
—

 
—

 
1,411

 
1,411

Net income attributable to BOK Financial Corp. shareholders
 
$
76,300

 
$
35,552

 
$
10,092

 
$
59,299

 
$
181,243

 
 
 
 
 
 
 
 
 
 
 
Average assets
 
$
9,939,627

 
$
5,722,627

 
$
4,167,268

 
$
5,698,028

 
$
25,527,550

Average invested capital
 
883,408

 
286,420

 
175,376

 
1,506,779

 
2,851,983

 
 
 
 
 
 
 
 
 
 
 
Performance measurements:
 
 

 
 

 
 

 
 

 
 

Return on average assets
 
1.54
%
 
1.25
%
 
0.49
%
 
 
 
1.43
%
Return on average invested capital
 
17.37
%
 
24.96
%
 
11.60
%
 
 
 
12.78
%
Efficiency ratio
 
50.19
%
 
65.08
%
 
85.73
%
 
 
 
60.42
%


Fair Value Measurements (Tables)
Fair Value Assets And Liabilities Measured On A Recurring Basis [Table Text Block] 
The fair value of financial assets and liabilities that are measured on a recurring basis are as follows as of June 30, 2013 (in thousands):
 
 
Total
 
Quoted Prices in Active Markets for Identical Instruments
 
Significant Other Observable Inputs
 
Significant Unobservable Inputs
Assets:
 
 
 
 
 
 
 
 
Trading securities:
 
 
 
 
 
 
 
 
U.S. Government agency debentures
 
$
60,713

 
$
—

 
$
60,713

 
$
—

U.S. agency residential mortgage-backed securities
 
43,858

 
—

 
43,858

 
—

Municipal and other tax-exempt securities
 
53,819

 
—

 
53,819

 
—

Other trading securities
 
32,201

 
—

 
32,201

 
—

Total trading securities
 
190,591

 
—

 
190,591

 
—

Available for sale securities:
 
 

 
 

 
 

 
 

U.S. Treasury
 
1,060

 
1,060

 
—

 
—

Municipal and other tax-exempt
 
95,103

 
—

 
56,256

 
38,847

U.S. agency residential mortgage-backed securities
 
8,372,795

 
—

 
8,372,795

 
—

Privately issued residential mortgage-backed securities
 
297,175

 
—

 
297,175

 
—

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
1,846,943

 
—

 
1,846,943

 
—

Other debt securities
 
35,894

 
—

 
30,701

 
5,193

Perpetual preferred stock
 
25,583

 
—

 
25,583

 
—

Equity securities and mutual funds
 
23,521

 
5,119

 
16,155

 
2,247

Total available for sale securities
 
10,698,074

 
6,179

 
10,645,608

 
46,287

Fair value option securities:
 
 
 
 
 
 
 
 
U.S. agency residential mortgage-backed securities
 
203,816

 
—

 
203,816

 
—

     Other securities
 
1,940

 
—

 
1,940

 
—

Total fair value option securities
 
205,756

 
—

 
205,756

 
—

Residential mortgage loans held for sale
 
301,057

 
—

 
301,057

 
—

Mortgage servicing rights1
 
132,889

 
—

 
—

 
132,889

Derivative contracts, net of cash margin2
 
546,206

 
17,588

 
528,618

 
—

Other assets – private equity funds
 
28,379

 
—

 
—

 
28,379

Liabilities:
 
 

 
 

 
 

 
 

Derivative contracts, net of cash margin2
 
521,991

 
—

 
521,991

 
—

1 
A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities.
2 
See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts based on quoted prices in active markets for identical instruments (Level 1) are exchange-traded energy and agricultural derivative contacts, net of cash margin.

The fair value of financial assets and liabilities that are measured on a recurring basis are as follows as of December 31, 2012 (in thousands):
 
 
Total
 
Quoted Prices in Active Markets for Identical Instruments
 
Significant Other Observable Inputs
 
Significant Unobservable Inputs
Assets:
 
 
 
 
 
 
 
 
Trading securities:
 
 
 
 
 
 
 
 
U.S. Government agency debentures
 
$
16,545

 
$
—

 
$
16,545

 
$
—

U.S. agency residential mortgage-backed securities
 
86,361

 
—

 
86,361

 
—

Municipal and other tax-exempt securities
 
90,326

 
—

 
90,326

 
—

Other trading securities
 
20,870

 
—

 
20,870

 
—

Total trading securities
 
214,102

 
—

 
214,102

 
—

Available for sale securities:
 
 

 
 

 
 

 
 

U.S. Treasury
 
1,002

 
1,002

 
—

 
—

Municipal and other tax-exempt
 
87,142

 
—

 
46,440

 
40,702

U.S. agency residential mortgage-backed securities
 
9,889,821

 
—

 
9,889,821

 
—

Privately issued residential mortgage-backed securities
 
325,163

 
—

 
325,163

 
—

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
895,075

 
—

 
895,075

 
—

Other debt securities
 
36,389

 
—

 
30,990

 
5,399

Perpetual preferred stock
 
25,072

 
—

 
25,072

 
—

Equity securities and mutual funds
 
27,557

 
4,165

 
21,231

 
2,161

Total available for sale securities
 
11,287,221

 
5,167

 
11,233,792

 
48,262

Fair value option securities:
 
 
 
 
 
 
 
 
U.S. agency residential mortgage-backed securities
 
257,040

 
—

 
257,040

 
—

Corporate debt securities
 
26,486

 
—

 
26,486

 
—

     Other securities
 
770

 
—

 
770

 
—

Total fair value option securities
 
284,296

 
—

 
284,296

 
—

Residential mortgage loans held for sale
 
293,762

 
—

 
293,762

 
—

Mortgage servicing rights1
 
100,812

 
—

 
—

 
100,812

Derivative contracts, net of cash margin 2
 
338,106

 
11,597

 
326,509

 
—

Other assets – private equity funds
 
28,169

 
—

 
—

 
28,169

Liabilities:
 
 

 
 

 
 

 
 

Derivative contracts, net of cash margin 2
 
283,589

 
—

 
283,589

 
—

1 
A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities.
2 
See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts based on quoted prices in active markets for identical instruments (Level 1) are exchange-traded energy and agricultural derivative contacts, net of cash margin.


The fair value of financial assets and liabilities that are measured on a recurring basis are as follows as of June 30, 2012 (in thousands):
 
 
Total
 
Quoted Prices in
Active Markets for Identical Instruments
 
Significant Other Observable Inputs
 
Significant Unobservable Inputs
Assets:
 
 
 
 
 
 
 
 
Trading securities:
 
 
 
 
 
 
 
 
U.S. Government agency debentures
 
$
53,514

 
$
992

 
$
52,522

 
$
—

U.S. agency residential mortgage-backed securities
 
46,502

 
—

 
46,502

 
—

Municipal and other tax-exempt securities
 
44,632

 
—

 
44,632

 
1,852

Other trading securities
 
4,669

 
—

 
4,545

 
124

Total trading securities
 
149,317

 
992

 
148,201

 
1,976

Available for sale securities:
 
 

 
 

 
 

 
 

U.S. Treasury
 
1,003

 
1,003

 
—

 
—

Municipal and other tax-exempt
 
88,458

 
—

 
46,796

 
41,662

U.S. agency residential mortgage-backed securities
 
9,903,532

 
—

 
9,903,532

 
—

Privately issued residential mortgage-backed securities
 
317,761

 
—

 
317,761

 
—

Other debt securities
 
36,286

 
—

 
30,898

 
5,388

Perpetual preferred stock
 
23,431

 
—

 
23,431

 
—

Equity securities and mutual funds
 
24,944

 
6,912

 
18,032

 
—

Total available for sale securities
 
10,395,415

 
7,915

 
10,340,450

 
47,050

Fair value option securities:
 
 
 
 
 
 
 
 
U.S. agency residential mortgage-backed securities
 
299,467

 
—

 
299,467

 
—

Corporate debt securities
 
25,710

 
—

 
25,710

 
—

Total fair value option securities
 
325,177

 
—

 
325,177

 
—

Residential mortgage loans held for sale
 
259,174

 
—

 
259,174

 
—

Mortgage servicing rights1
 
91,783

 
—

 
—

 
91,783

Derivative contracts, net of cash margin 2
 
366,204

 
802

 
365,402

 
—

Other assets – private equity funds
 
31,492

 
—

 
—

 
31,492

Liabilities:
 
 

 
 

 
 

 
 

Derivative contracts, net of cash margin 2
 
370,053

 
251

 
369,802

 
—

1 
A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities.
2 
See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts based on quoted prices in active markets for identical instruments (Level 1) are exchange-traded energy and agricultural derivative contacts, net of cash margin.

Fair Value Assets Measured On Recurring Basis, Significant Unobservable Inputs [Table Text Block] 
The following represents the changes for the three months ended June 30, 2013 related to assets measured at fair value on a recurring basis using significant unobservable inputs (in thousands):
 
 
Available for Sale Securities
 
 
 
 
Municipal and other tax-exempt
 
Other debt securities
 
Equity securities and mutual funds
 
Other assets – private equity funds
Balance, Mar. 31, 2013
 
$
39,007

 
$
5,193

 
$
2,472

 
$
29,216

Purchases and capital calls
 
—

 
—

 
—

 
148

Redemptions and distributions
 
—

 
—

 
—

 
(1,005
)
Gain (loss) recognized in earnings:
 
 

 
 

 
 
 
 

Gain on other assets, net
 
—

 
—

 
—

 
20

Gain on available for sale securities, net
 
—

 
—

 
—

 
—

Other-than-temporary impairment losses
 
—

 
—

 
—

 
—

Other comprehensive gain (loss)
 
(160
)
 
—

 
(225
)
 
—

Balance, June 30, 2013
 
$
38,847

 
$
5,193

 
$
2,247

 
$
28,379


The following represents the changes for the six months ended June 30, 2013 related to assets measured at fair value on a recurring basis using significant unobservable inputs (in thousands):
 
 
Available for Sale Securities
 
 
 
 
Municipal and other tax-exempt
 
Other debt securities
 
Equity securities and mutual funds
 
Other assets – private equity funds
Balance, Dec. 31, 2012
 
$
40,702

 
$
5,399

 
$
2,161

 
$
28,169

Purchases and capital calls
 
—

 
—

 
—

 
640

Redemptions and distributions
 
(98
)
 
—

 
—

 
(1,835
)
Gain (loss) recognized in earnings:
 
 

 
 

 
 
 
 

Gain on other assets, net
 
—

 
—

 
—

 
1,405

Gain on available for sale securities, net
 
—

 
—

 
—

 
—

Other-than-temporary impairment losses
 
—

 
—

 
—

 
—

Other comprehensive gain (loss)
 
(1,757
)
 
(206
)
 
86

 
—

Balance, June 30, 2013
 
$
38,847

 
$
5,193

 
$
2,247

 
$
28,379


The following represents the changes for the three months ended June 30, 2012 related to assets measured at fair value on a recurring basis using significant unobservable inputs (in thousands):
 
 
Available for Sale Securities
 
 
 
 
Municipal and other tax-exempt
 
Other debt securities
 
Other assets – private equity funds
Balance, Mar. 31, 2012
 
$
41,977

 
$
5,900

 
$
30,993

Purchases, and capital calls
 
—

 
—

 
820

Redemptions and distributions
 
(363
)
 
(500
)
 
(2,559
)
Gain (loss) recognized in earnings
 
 

 
 

 
 

Gain (loss) on other assets, net
 
—

 
—

 
2,238

Gain on available for sale securities, net
 
—

 
—

 
—

Other-than-temporary impairment losses
 
—

 
—

 
—

Other comprehensive (loss)
 
48

 
(12
)
 
—

Balance, June 30, 2012
 
$
41,662

 
$
5,388

 
$
31,492


The following represents the changes for the six months ended June 30, 2012 related to assets measured at fair value on a recurring basis using significant unobservable inputs (in thousands):
 
 
Available for Sale Securities
 
 
 
 
Municipal and other tax-exempt
 
Other debt securities
 
Other assets – private equity funds
Balance, Dec. 31, 2011
 
$
42,353

 
$
5,900

 
$
30,902

Purchases, and capital calls
 
—

 
—

 
1,909

Redemptions and distributions
 
(463
)
 
(500
)
 
(3,166
)
Gain (loss) recognized in earnings
 
 

 
 

 
 
Gain (loss) on other assets, net
 
—

 
—

 
1,847

Gain on available for sale securities, net
 
1

 
—

 
—

Other-than-temporary impairment losses
 
—

 
—

 
—

Other comprehensive (loss)
 
(229
)
 
(12
)
 
—

Balance, June 30, 2012
 
$
41,662

 
$
5,388

 
$
31,492

Fair Value Inputs, Fair Value Measured On a Recurring Basis, Quantitative Information [Table Text Block] 
A summary of quantitative information about assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) as of June 30, 2013 follows (in thousands):
Quantitative Information about Level 3 Recurring Fair Value Measurements
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Par
Value
 
Amortized
Cost6
 
Fair
Value
 
Valuation Technique(s)
 
Unobservable Input
 
Range
(Weighted Average)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for sale securities
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax-exempt securities
 
 
 
 
 
 
 
 
 
 
 
 
 
Investment grade
 
$
28,470

 
$
28,375

 
$
27,116

 
Discounted cash flows
1 
Interest rate spread
 
4.99%-5.49% (5.24%)
2 
95.01%-95.6% (95.25%)
3 
Below investment grade
 
17,000

 
12,384

 
11,731

 
Discounted cash flows
1 
Interest rate spread
 
9.15%-11.19% (9.87%)
4 
68.91%-69.09% (69.01%)
3 
Total municipal and other tax-exempt securities
 
45,470

 
40,759

 
38,847

 
 
 
 
 
 
 
Other debt securities
 
5,400

 
5,400

 
5,193

 
Discounted cash flows
1 
Interest rate spread
 
4.41%-5.69% (5.48%)
5 
96.13%-96.16% (96.16%)
3 
Equity securities and mutual funds
 
N/A
 
2,420

 
2,247

 
Tangible book value per share of publicly traded financial institutions of similar size, less liquidity discount.
 
Peer group tangible book per share and liquidity discount.
 
N/A
7 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Other assets - private equity funds
 
N/A
 
N/A
 
28,379

 
Net asset value reported by underlying fund
 
Net asset value reported by underlying fund
 
N/A
 
1 
Discounted cash flows developed using discount rates primarily based on reference to interest rate spreads for comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies, adjusted for lack of trading volume
2 
Interest rate yields used to value investment grade tax-exempt securities represent a spread of 457 to 520 basis points over average yields for comparable tax-exempt securities.
3 
Represents fair value as a percentage of par value
4 
Interest rate yields determined using a spread of 700 basis points over comparable municipal securities of varying durations.
5 
Interest rate yields used to value investment grade taxable securities based on comparable short-term taxable securities which are generally yielding less than 1%.
6 
Amortized cost reduced by other-than-temporary impairments recorded in earnings. See Note 2 for additional discussion.
7 
Fair value of shares of a smaller privately-held financial institution were valued using the tangible book value per share of similarly sized financial institutions within the immediate geographical market with a discount of 20% due to the liquidity of the shares.

The fair value of these securities measured at fair value using significant unobservable inputs are sensitive primarily to changes in interest rate spreads. At June 30, 2013, for tax-exempt securities rated investment grade by all nationally-recognized rating agencies, a 100 basis point increase in the spreads over average yields for comparable securities would result in an additional decrease in the fair value of $262 thousand. For taxable securities rated investment grade by all nationally-recognized rating agencies, a 100 basis point increase in the spreads over average yield for comparable securities would result in an additional decrease in the fair value of $50 thousand. For municipal and other tax-exempt securities rated below investment grade by at least one of the nationally-recognized rating agencies, a 100 basis point increase in the spread over average yields for comparable securities would result in an additional decrease in the fair value of these securities of $330 thousand.


A summary of quantitative information about Recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of December 31, 2012 follows (in thousands):
Quantitative Information about Level 3 Recurring Fair Value Measurements
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Par
Value
 
Amortized
Cost6
 
Fair
Value
 
Valuation Technique(s)
 
Unobservable Input
 
Range
(Weighted Average)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for sale securities
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax-exempt securities
 
 
 
 
 
 
 
 
 
 
 
 
 
Investment grade
 
$
28,570

 
$
28,473

 
$
28,318

 
Discounted cash flows
1 
Interest rate spread
 
1%-1.5% (1.25%)
2 
98.83%-99.43% (99.12%)
3 
Below investment grade
 
17,000

 
12,384

 
12,384

 
Discounted cash flows
1 
Interest rate spread
 
7.21%-9.83% (7.82%)
4 
72.79%-73% (72.85%)
3 
Total municipal and other tax-exempt securities
 
45,570

 
40,857

 
40,702

 
 
 
 
 
 
 
Other debt securities
 
5,400

 
5,400

 
5,399

 
Discounted cash flows
1 
Interest rate spread
 
1.65%-1.71% (1.7%)
5 
100% (100%)
3 
Equity securities and mutual funds
 
N/A
 
2,161

 
2,161

 
Tangible book value per share of publicly traded financial institutions of similar size, less liquidity discount.
 
Peer group tangible book per share and liquidity discount.
 
N/A
7 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Other assets - private equity funds
 
N/A
 
N/A
 
28,169

 
Net asset value reported by underlying fund
 
Net asset value reported by underlying fund
 
N/A
 
1 
Discounted cash flows developed using discount rates primarily based on reference to interest rate spreads for comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies, adjusted for lack of trading volume
2 
Interest rate yields used to value investment grade tax-exempt securities represent a spread of 75 to 80 basis points over average yields for comparable tax-exempt securities.
3 
Represents fair value as a percentage of par value
4 
Interest rate yields determined using a spread of 700 basis points over comparable municipal securities of varying durations.
5 
Interest rate yields used to value investment grade taxable securities based on comparable short-term taxable securities which are generally yielding less than 1%.
6 
Amortized cost reduced by other-than-temporary impairments recorded in earnings. See Note 2 for additional discussion.
7 
Fair value of shares of a smaller privately-held financial institution were valued using the tangible book value per share of similarly sized financial institutions within the immediate geographical market with a discount of 20% due to the liquidity of the shares.


A summary of quantitative information about Recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of June 30, 2012 follows (in thousands):

Quantitative Information about Level 3 Recurring Fair Value Measurements
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Par
Value
 
Amortized
Cost6
 
Fair
Value
 
Valuation Technique(s)
 
Unobservable Input
 
Range
(Weighted Average)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available for sale securities
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax-exempt securities
 
 
 
 
 
 
 
 
 
 
 
 
 
Investment grade
 
$
29,100

 
$
28,998

 
$
28,858

 
Discounted cash flows
1 
Interest rate spread
 
1%-1.5% (1.25%)
2 
98.88%-99.49% (99.17%)
3 
Below investment grade
 
17,000

 
13,396

 
12,804

 
Discounted cash flows
1 
Interest rate spread
 
6.2%-9.16% (6.87%)
4 
75.21%-75.49% (75.32%)
3 
Total municipal and other tax-exempt securities
 
46,100

 
42,394

 
41,662

 
 
 
 
 
 
 
Other debt securities
 
5,400

 
5,400

 
5,388

 
Discounted cash flows
1 
Interest rate spread
 
1.74%-1.75% (1.74%)
5 
98.72%-100% (99.78%)
3 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Other assets - private equity funds
 
N/A
 
N/A
 
31,492

 
Net asset value reported by underlying fund
 
Net asset value reported by underlying fund
 
N/A
 
1 
Discounted cash flows developed using discount rates primarily based on reference to interest rate spreads for comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies, adjusted for lack of trading volume
2 
Interest rate yields used to value investment grade tax-exempt securities represent a spread of 75 to 80 basis points over average yields for comparable tax-exempt securities.
3 
Represents fair value as a percentage of par value
4 
Interest rate yields determined using a spread of 600 basis points over comparable municipal securities of varying durations.
5 
Interest rate yields used to value investment grade taxable securities based on comparable short-term taxable securities which are generally yielding less than 1%.
6 
Amortized cost reduced by other-than-temporary impairments recorded in earnings. See Note 2 for additional discussion.
Fair Value Assets Measured on Nonrecurring Basis [Table Text Block] 
The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at June 30, 2013 for which the fair value was adjusted during the six months ended June 30, 2013:
 
 
 
 
 
 
 
Fair Value Adjustments for the
 
Carrying Value at June 30, 2013
 
Three Months Ended June 30, 2013 Recognized in:
 
Six Months Ended June 30, 2013 Recognized in:
 
Quoted Prices
in Active Markets for Identical Instruments
 
Significant
Other
Observable
Inputs
 
Significant
Unobservable
Inputs
 
Gross charge-offs against allowance for loan losses
 
Net losses and expenses of repossessed assets, net
 
Gross charge-offs against allowance for loan losses
 
Net losses and expenses of repossessed assets, net
Impaired loans
$
—

 
$
10,245

 
$
4,930

 
$
5,060

 
$
—

 
$
6,601

 
$
—

Real estate and other repossessed assets
—

 
7,949

 
271

 
—

 
863

 
—

 
1,014

 
The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at June 30, 2012 for which the fair value was adjusted during the six months ended June 30, 2012:
 
 
 
 
 
 
 
Fair Value Adjustments for the
 
Carrying Value at June 30, 2012
 
Three Months Ended June 30, 2012 Recognized in:
 
Six Months Ended June 30, 2012 Recognized in:
 
Quoted Prices
in Active Markets for Identical Instruments
 
Significant
Other
Observable
Inputs
 
Significant
Unobservable
Inputs
 
Gross charge-offs against allowance for loan losses
 
Net losses and expenses of repossessed assets, net
 
Gross charge-offs against allowance for loan losses
 
Net losses and expenses of repossessed assets, net
Impaired loans
$
—

 
$
29,369

 
$
2,881

 
$
4,406

 
$
—

 
$
10,826

 
$
—

Real estate and other repossessed assets
—

 
27,474

 
3,035

 
—

 
4,488

 
—

 
6,876

Fair Value Inputs, Fair Value Measured On a Nonrecurring Basis, Quantitative Information [Table Text Block] 
A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of June 30, 2013 follows (in thousands):
Quantitative Information about Level 3 Non-recurring Fair Value Measurements
 
 
Fair Value
 
Valuation Technique(s)
 
Unobservable Input
 
Range
(Weighted Average)
 
 
 
 
 
 
 
 
 
Impaired loans
 
$
4,930

 
Appraised value, as adjusted
 
Broker quotes and management's knowledge of industry and collateral.
 
N/A
Real estate and other repossessed assets
 
271

 
Listing value, less cost to sell
 
Marketability adjustments off appraised value
 
71%-81% (76%)1
1 
Marketability adjustments include consideration of estimated costs to sell which is approximately 15% of fair value.

A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of June 30, 2012 follows (in thousands):
Quantitative Information about Level 3 Non-recurring Fair Value Measurements
 
 
Fair Value
 
Valuation Technique(s)
 
Unobservable Input
 
Range
(Weighted Average)
 
 
 
 
 
 
 
 
 
Impaired loans
 
$
2,881

 
Appraised value, as adjusted
 
Broker quotes and management's knowledge of industry and collateral.
 
N/A
Real estate and other repossessed assets
 
3,035

 
Listing value, less cost to sell
 
Marketability adjustments off appraised value
 
58%-85% (71%)1
1 
Marketability adjustments include consideration of estimated costs to sell which is approximately 15% of fair value. In addition, $887 thousand of real estate and other repossessed assets at June 30, 2012 are based on expert opinions or management's knowledge of the collateral or industry and do not have and independently appraised value.
Fair Value of Financial Instruments [Table Text Block] 
The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis as of June 30, 2013 (dollars in thousands):
 
 
Carrying
Value
 
Range of
Contractual
Yields
 
Average
Re-pricing
(in years)
 
Discount
Rate
 
Estimated
Fair
Value
Cash and cash equivalents
 
$
1,078,385

 
 
 
 
 
 
 
$
1,078,385

Trading securities:
 
 
 
 
 
 
 
 
 
 
U.S. Government agency debentures
 
60,713

 
 
 
 
 
 
 
60,713

U.S. agency residential mortgage-backed securities
 
43,858

 
 
 
 
 
 
 
43,858

Municipal and other tax-exempt securities
 
53,819

 
 
 
 
 
 
 
53,819

Other trading securities
 
32,201

 
 
 
 
 
 
 
32,201

Total trading securities
 
190,591

 
 
 
 
 
 
 
190,591

Investment securities:
 
 

 
 
 
 
 
 
 
 

Municipal and other tax-exempt
 
375,317

 
 
 
 
 
 
 
371,690

U.S. agency residential mortgage-backed securities
 
64,172

 
 
 
 
 
 
 
66,796

Other debt securities
 
176,301

 
 
 
 
 
 
 
187,219

Total investment securities
 
615,790

 
 
 
 
 
 
 
625,705

Available for sale securities:
 
 

 
 
 
 
 
 
 
 

U.S. Treasury
 
1,060

 
 
 
 
 
 
 
1,060

Municipal and other tax-exempt
 
95,103

 
 
 
 
 
 
 
95,103

U.S. agency residential mortgage-backed securities
 
8,372,795

 
 
 
 
 
 
 
8,372,795

Privately issued residential mortgage-backed securities
 
297,175

 
 
 
 
 
 
 
297,175

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
1,846,943

 
 
 
 
 
 
 
1,846,943

Other debt securities
 
35,894

 
 
 
 
 
 
 
35,894

Perpetual preferred stock
 
25,583

 
 
 
 
 
 
 
25,583

Equity securities and mutual funds
 
23,521

 
 
 
 
 
 
 
23,521

Total available for sale securities
 
10,698,074

 
 
 
 
 
 
 
10,698,074

Fair value option securities:
 
 
 
 
 
 
 
 
 
 
U.S. agency residential mortgage-backed securities
 
203,816

 
 
 
 
 
 
 
203,816

      Other securities
 
1,940

 
 
 
 
 
 
 
1,940

Total fair value option securities
 
205,756

 
 
 
 
 
 
 
205,756

Residential mortgage loans held for sale
 
301,057

 
 
 
 
 
 
 
301,057

Loans:
 
 

 
 
 
 
 
 
 
 

Commercial
 
7,708,120

 
0.25 - 30.00
 
0.63

 
0.59 - 4.19

 
7,638,327

Commercial real estate
 
2,317,096

 
0.38 - 18.00
 
0.83

 
1.23 - 3.47

 
2,288,188

Residential mortgage
 
2,039,785

 
0.38 - 18.00
 
3.64

 
0.70 - 4.46

 
2,038,375

Consumer
 
375,781

 
0.38 - 21.00
 
0.35

 
1.26 - 3.74

 
369,375

Total loans
 
12,440,782

 
 
 
 

 
 

 
12,334,265

Allowance for loan losses
 
(203,124
)
 
 
 
 

 
 

 
—

Net loans
 
12,237,658

 
 
 
 

 
 

 
12,334,265

Mortgage servicing rights
 
132,889

 
 
 
 

 
 

 
132,889

Derivative instruments with positive fair value, net of cash margin
 
546,206

 
 
 
 

 
 

 
546,206

Other assets – private equity funds
 
28,379

 
 
 
 

 
 

 
28,379

Deposits with no stated maturity
 
16,728,258

 
 
 
 

 
 

 
16,728,258

Time deposits
 
2,767,972

 
0.03 - 9.64
 
2.02

 
0.76 - 1.30

 
2,781,202

Other borrowed funds
 
4,073,915

 
0.25 - 5.25
 
—

 
0.07 - 2.66

 
4,034,685

Subordinated debentures
 
347,716

 
0.97 - 5.00
 
3.10

 
2.24
%
 
345,201

Derivative instruments with negative fair value, net of cash margin
 
521,991

 
 
 
 

 
 

 
521,991

The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis as of December 31, 2012 (dollars in thousands):
 
 
Carrying
Value
 
Range of
Contractual
Yields
 
Average
Re-pricing
(in years)
 
Discount
Rate
 
Estimated
Fair
Value
Cash and cash equivalents
 
$
1,286,239

 
 
 
 
 
 
 
$
1,286,239

Trading securities:
 
 
 
 
 
 
 
 
 
 
U.S. Government agency debentures
 
16,545

 
 
 
 
 
 
 
16,545

U.S. agency residential mortgage-backed securities
 
86,361

 
 
 
 
 
 
 
86,361

Municipal and other tax-exempt securities
 
90,326

 
 
 
 
 
 
 
90,326

Other trading securities
 
20,870

 
 
 
 
 
 
 
20,870

Total trading securities
 
214,102

 
 
 
 
 
 
 
214,102

Investment securities:
 
 

 
 
 
 
 
 
 
 

Municipal and other tax-exempt
 
232,700

 
 
 
 
 
 
 
235,940

U.S. agency residential mortgage-backed securities
 
82,767

 
 
 
 
 
 
 
85,943

Other debt securities
 
184,067

 
 
 
 
 
 
 
206,575

Total investment securities
 
499,534

 
 
 
 
 
 
 
528,458

Available for sale securities:
 
 

 
 
 
 
 
 
 
 

U.S. Treasury
 
1,002

 
 
 
 
 
 
 
1,002

Municipal and other tax-exempt
 
87,142

 
 
 
 
 
 
 
87,142

U.S. agency residential mortgage-backed securities
 
9,889,821

 
 
 
 
 
 
 
9,889,821

Privately issued residential mortgage-backed securities
 
325,163

 
 
 
 
 
 
 
325,163

Commercial mortgage-backed securities guaranteed by U.S. government agencies
 
895,075

 
 
 
 
 
 
 
895,075

Other debt securities
 
36,389

 
 
 
 
 
 
 
36,389

Perpetual preferred stock
 
25,072

 
 
 
 
 
 
 
25,072

Equity securities and mutual funds
 
27,557

 
 
 
 
 
 
 
27,557

Total available for sale securities
 
11,287,221

 
 
 
 
 
 
 
11,287,221

Fair value option securities:
 
 
 
 
 
 
 
 
 
 
U.S. agency residential mortgage-backed securities
 
257,040

 
 
 
 
 
 
 
257,040

Corporate debt securities
 
26,486

 
 
 
 
 
 
 
26,486

      Other securities
 
770

 
 
 
 
 
 
 
770

Total fair value option securities
 
284,296

 
 
 
 
 
 
 
284,296

Residential mortgage loans held for sale
 
293,762

 
 
 
 
 
 
 
293,762

Loans:
 
 

 
 
 
 

 
 

 
 

Commercial
 
7,641,912

 
0.21 - 30.00
 
0.69

 
0.51 - 3.59

 
7,606,505

Commercial real estate
 
2,228,999

 
0.21 - 18.00
 
0.92

 
1.26 - 3.18

 
2,208,217

Residential mortgage
 
2,045,040

 
0.38 - 18.00
 
3.34

 
0.86 - 3.09

 
2,110,773

Consumer
 
395,505

 
0.38 - 21.00
 
0.32

 
1.37 - 3.60

 
388,748

Total loans
 
12,311,456

 
 
 
 

 
 

 
12,314,243

Allowance for loan losses
 
(215,507
)
 
 
 
 

 
 

 
—

Net loans
 
12,095,949

 
 
 
 

 
 

 
12,314,243

Mortgage servicing rights
 
100,812

 
 
 
 

 
 

 
100,812

Derivative instruments with positive fair value, net of cash margin
 
338,106

 
 
 
 

 
 

 
338,106

Other assets – private equity funds
 
28,169

 
 
 
 

 
 

 
28,169

Deposits with no stated maturity
 
18,211,068

 
 
 
 

 
 

 
18,211,068

Time deposits
 
2,967,992

 
0.01 - 9.64
 
2.15

 
0.80 - 1.15

 
3,037,708

Other borrowed funds
 
2,706,221

 
0.09 - 5.25
 
—

 
0.09 - 2.67

 
2,696,574

Subordinated debentures
 
347,633

 
1.00 - 5.00
 
3.56

 
2.40
%
 
345,675

Derivative instruments with negative fair value, net of cash margin
 
283,589

 
 
 
 

 
 

 
283,589


The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis as of June 30, 2012 (dollars in thousands):
 
 
Carrying
Value
 
Range of
Contractual
Yields
 
Average
Re-pricing
(in years)
 
Discount
Rate
 
Estimated
Fair
Value
Cash and cash equivalents
 
$
639,263

 
 
 
 
 
 
 
$
639,263

Trading securities:
 
 
 
 
 
 
 
 
 
 
U.S. Government agency debentures
 
53,514

 
 
 
 
 
 
 
53,514

U.S. agency residential mortgage-backed securities
 
46,502

 
 
 
 
 
 
 
46,502

Municipal and other tax-exempt securities
 
44,632

 
 
 
 
 
 
 
44,632

Other trading securities
 
4,669

 
 
 
 
 
 
 
4,669

Total trading securities
 
149,317

 
 
 
 
 
 
 
149,317

Investment securities:
 
 

 
 
 
 
 
 
 
 

Municipal and other tax-exempt
 
126,168

 
 
 
 
 
 
 
130,308

U.S. agency residential mortgage-backed securities
 
102,347

 
 
 
 
 
 
 
105,535

Other debt securities
 
183,964

 
 
 
 
 
 
 
204,795

Total investment securities
 
412,479

 
 
 
 
 
 
 
440,638

Available for sale securities:
 
 

 
 
 
 
 
 
 
 

U.S. Treasury
 
1,003

 
 
 
 
 
 
 
1,003

Municipal and other tax-exempt
 
88,458

 
 
 
 
 
 
 
88,458

U.S. agency residential mortgage-backed securities
 
9,903,532

 
 
 
 
 
 
 
9,903,532

Privately issued residential mortgage-backed securities
 
317,761

 
 
 
 
 
 
 
317,761

Other debt securities
 
36,286

 
 
 
 
 
 
 
36,286

Perpetual preferred stock
 
23,431

 
 
 
 
 
 
 
23,431

Equity securities and mutual funds
 
24,944

 
 
 
 
 
 
 
24,944

Total available for sale securities
 
10,395,415

 
 
 
 
 
 
 
10,395,415

Fair value option securities:
 
 
 
 
 
 
 
 
 
 
U.S. agency residential mortgage-backed securities
 
299,467

 
 
 
 
 
 
 
299,467

Corporate debt securities
 
25,710

 
 
 
 
 
 
 
25,710

Total fair value option securities
 
325,177

 
 
 
 
 
 
 
325,177

Residential mortgage loans held for sale
 
259,174

 
 
 
 
 
 
 
259,174

Loans:
 
 

 
 
 
 
 
 
 
 

Commercial
 
7,035,535

 
0.25 - 30.00
 
0.70

 
0.63 - 3.68

 
6,993,377

Commercial real estate
 
2,149,730

 
0.38 - 18.00
 
0.92

 
1.33 - 3.33

 
2,129,731

Residential mortgage
 
2,002,885

 
0.38 - 18.00
 
3.10

 
1.08 - 3.52

 
2,040,062

Consumer
 
388,281

 
0.38 - 21.00
 
0.34

 
1.59 - 3.79

 
383,088

Total loans
 
11,576,431

 
 
 
 

 
 

 
11,546,258

Allowance for loan losses
 
(231,669
)
 
 
 
 

 
 

 
—

Net loans
 
11,344,762

 
 
 
 

 
 

 
11,546,258

Mortgage servicing rights
 
91,783

 
 
 
 

 
 

 
91,783

Derivative instruments with positive fair value, net of cash margin
 
366,204

 
 
 
 

 
 

 
366,204

Other assets – private equity funds
 
31,492

 
 
 
 

 
 

 
31,492

Deposits with no stated maturity
 
15,157,587

 
 
 
 

 
 

 
15,157,587

Time deposits
 
3,107,950

 
0.01 - 9.64
 
2.17

 
0.92 - 1.31

 
3,175,687

Other borrowed funds
 
2,648,753

 
0.09 - 5.25
 
—

 
0.09 - 2.70

 
2,642,598

Subordinated debentures
 
353,378

 
1.16 - 5.00
 
4.02

 
2.40
%
 
350,813

Derivative instruments with negative fair value, net of cash margin
 
370,053

 
 
 
 

 
 

 
370,053


Federal and State Income Taxes (Tables)
Reconciliation of income (loss) to income tax expense
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2013
 
2012
 
2013
 
2012
Amount:
 
 
 
 
 
 
 
 
Federal statutory tax
 
$
42,459

 
$
53,414

 
$
90,113

 
$
98,463

Tax exempt revenue
 
(1,803
)
 
(1,334
)
 
(3,545
)
 
(2,598
)
Effect of state income taxes, net of federal benefit
 
3,122

 
3,572

 
6,500

 
6,570

Utilization of tax credits
 
(1,826
)
 
(1,467
)
 
(3,548
)
 
(2,564
)
Bank-owned life insurance
 
(993
)
 
(976
)
 
(1,878
)
 
(1,955
)
Other, net
 
464

 
(60
)
 
877

 
753

Total
 
$
41,423

 
$
53,149

 
$
88,519

 
$
98,669


 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2013
 
2012
 
2013
 
2012
Percent of pretax income:
 
 
 
 
 
 
 
 
Federal statutory tax
 
35
 %
 
35
 %
 
35
 %
 
35
 %
Tax exempt revenue
 
(1
)
 
(1
)
 
(1
)
 
(1
)
Effect of state income taxes, net of federal benefit
 
3

 
3

 
2

 
2

Utilization of tax credits
 
(2
)
 
(1
)
 
(1
)
 
(1
)
Bank-owned life insurance
 
(1
)
 
(1
)
 
(1
)
 
(1
)
Other, net
 
—

 
—

 
—

 
1

Total
 
34
 %
 
35
 %
 
34
 %
 
35
 %
Significant Accounting Policies Loans and Allowance for Credit Losses (Details)
6 Months Ended
Jun. 30, 2013
Loans and Allowance for Credit Losses [Abstract]
 
Loans, Number of Days Past Due for a Non-Risk Graded Loan to be Placed on Nonaccruing Status
90 days 
Loans, Number of Days After Notification of Chapter 7 Bankruptcy Non-Risk Graded Loan is Placed on Nonaccruing Status
60 days 
Loans and Allowances for Credit Losses, Minimum No of Days After Which Past Due Non-Risk Graded Loans Are Charged Off
60 days 
Loans and Allowances for Credit Losses, Maximum No of Days After Which Past Due Non-Risk Graded Loans Are Charged Off
180 days 
Loans, Number of Days After Notification of Chapter 7 Bankruptcy Non-Risk Graded Loan is Charged Off
60 days 
Trading Securities (Details) (USD $)
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Schedule of Trading Securities [Line Items]
 
 
 
Trading Securities, Fair Value
$ 190,591,000 
$ 214,102,000 
$ 149,317,000 
Trading Securities, Net Unrealized Gain (Loss)
(2,502,000)
151,000 
240,000 
U.S. Government agency debentures [Member]
 
 
 
Schedule of Trading Securities [Line Items]
 
 
 
Trading Securities, Fair Value
60,713,000 
16,545,000 
53,514,000 
Trading Securities, Net Unrealized Gain (Loss)
(552,000)
(57,000)
23,000 
U.S. agency residential mortgage-backed securities [Member]
 
 
 
Schedule of Trading Securities [Line Items]
 
 
 
Trading Securities, Fair Value
43,858,000 
86,361,000 
46,502,000 
Trading Securities, Net Unrealized Gain (Loss)
38,000 
447,000 
222,000 
Municipal and other tax-exempt securities [Member]
 
 
 
Schedule of Trading Securities [Line Items]
 
 
 
Trading Securities, Fair Value
53,819,000 
90,326,000 
44,632,000 
Trading Securities, Net Unrealized Gain (Loss)
(1,271,000)
(226,000)
9,000 
Trading Securities, Pledged as Collateral
0 
13,000,000 
0 
Other trading securities [Member]
 
 
 
Schedule of Trading Securities [Line Items]
 
 
 
Trading Securities, Fair Value
32,201,000 
20,870,000 
4,669,000 
Trading Securities, Net Unrealized Gain (Loss)
$ (717,000)
$ (13,000)
$ (14,000)
Investment (Held-to-Maturity) Securities (Details) (USD $)
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Sep. 30, 2011
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
 
 
 
 
Investment Securities, Amortized Cost
$ 612,770,000 
$ 494,493,000 
$ 404,258,000 
 
Investments Securities, Carrying Value
615,790,000 1
499,534,000 2
412,479,000 3
 
Investment Securities, Fair Value
625,705,000 
528,458,000 
440,638,000 
 
Investment Securities, Gross Unrealized Gain
15,791,000 4
29,427,000 4
28,184,000 4
 
Investment Securities, Gross Unrealized Loss
(5,876,000)4
(503,000)4
(25,000)4
 
Investment Securities, Debt Maturities, Net Carrying Value [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Net Carrying Value
615,790,000 
 
 
 
Investment Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Fair Value
625,705,000 
 
 
 
Investment Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Nominal Yield
3.19% 
 
 
 
Investment Securities, Pledged as Collateral [Abstract]
 
 
 
 
Investment Securities, Pledged as Collateral, Carrying Value
97,286,000 
117,346,000 
156,852,000 
 
Investment Securities, Pledged as Collateral, Fair Value
100,644,000 
121,647,000 
162,391,000 
 
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
 
 
 
 
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions
163 
67 
6 
 
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
 
 
 
 
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value
272,738,000 
93,649,000 
9,321,000 
 
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value
0 
0 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Fair Value
272,738,000 
93,649,000 
9,321,000 
 
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
 
 
 
 
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses
5,876,000 
503,000 
25,000 
 
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses
0 
0 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses
5,876,000 
503,000 
25,000 
 
Other than Temporary Impairment Losses, Investment Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Lowest Current Credit Rating [Abstract]
 
 
 
 
Investment Securities, Portfolio Concentration US Govt or GSE Securities Not Rated, Carrying Value
64,172,000 5
 
 
 
Investment Securities, Portfolio Concentration US Govt or GSE Securities Not Rated, Fair Value
66,796,000 5
 
 
 
Investment Securities, Portfolio Concentration Rated AAA to AA, Carrying Value
439,004,000 
 
 
 
Investment Securities, Portfolio Concentration Rated AAA to AA, Fair Value
445,205,000 
 
 
 
Investment Securities, Portfolio Concentration Rated A to BBB, Carrying Value
25,165,000 
 
 
 
Investment Securities, Portfolio Concentration Rated A to BBB, Fair Value
25,434,000 
 
 
 
Investment Securities, Portfolio Concentration Rated Below Investment Grade, Carrying Value
0 
 
 
 
Investment Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
 
Investment Securities, Portfolio Concentration Not Rated, Carrying Value
87,449,000 
 
 
 
Investment Securities, Portfolio Concentration Not Rated, Fair Value
88,270,000 
 
 
 
Fixed Maturity Securities [Member]
 
 
 
 
Investment Securities, Debt Maturities, Net Carrying Value [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Less than One Year, Net Carrying Value
33,920,000 
 
 
 
Investment Securities, Debt Maturities, One to Five Years, Net Carrying Value
270,856,000 
 
 
 
Investment Securities, Debt Maturities, Six to Ten Years, Net Carrying Value
136,917,000 
 
 
 
Investment Securities, Debt Maturities, Over Ten Years, Net Carrying Value
109,925,000 
 
 
 
Investment Securities, Debt Maturities, Net Carrying Value
551,618,000 
 
 
 
Investment Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Less Than One Year, Fair Value
34,217,000 
 
 
 
Investment Securities, Debt Maturities, One to Five Years, Fair Value
269,545,000 
 
 
 
Investment Securities, Debt Maturities, Six to Ten Years, Fair Value
135,722,000 
 
 
 
Investment Securities, Debt Maturities, Over Ten Years, Fair Value
119,425,000 
 
 
 
Investment Securities, Debt Maturities, Fair Value
558,909,000 
 
 
 
Investment Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Less Than One Year, Nominal Yield
4.22% 
 
 
 
Investment Securities, Debt Maturities, One to Five Years, Nominal Yield
2.09% 
 
 
 
Investment Securities, Debt Maturities, Six to Ten Years, Nominal Yield
3.07% 
 
 
 
Investment Securities, Debt Maturities, Over Ten Years, Nominal Yield
5.99% 
 
 
 
Investment Securities, Debt Maturities, Nominal Yield
3.24% 
 
 
 
Investment Securities, Debt Maturities, Weighted Average Maturity
5.72 6
 
 
 
Municipal and other tax-exempt securities [Member]
 
 
 
 
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
 
 
 
 
Investment Securities, Amortized Cost
375,317,000 
232,700,000 
126,168,000 
 
Investments Securities, Carrying Value
375,317,000 1
232,700,000 2
126,168,000 3
 
Investment Securities, Fair Value
371,690,000 
235,940,000 
130,308,000 
 
Investment Securities, Gross Unrealized Gain
2,189,000 4
3,723,000 4
4,165,000 4
 
Investment Securities, Gross Unrealized Loss
(5,816,000)4
(483,000)4
(25,000)4
 
Investment Securities, Debt Maturities, Net Carrying Value [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Less than One Year, Net Carrying Value
24,239,000 
 
 
 
Investment Securities, Debt Maturities, One to Five Years, Net Carrying Value
239,869,000 
 
 
 
Investment Securities, Debt Maturities, Six to Ten Years, Net Carrying Value
101,753,000 
 
 
 
Investment Securities, Debt Maturities, Over Ten Years, Net Carrying Value
9,456,000 
 
 
 
Investment Securities, Debt Maturities, Net Carrying Value
375,317,000 
 
 
 
Investment Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Less Than One Year, Fair Value
24,504,000 
 
 
 
Investment Securities, Debt Maturities, One to Five Years, Fair Value
238,125,000 
 
 
 
Investment Securities, Debt Maturities, Six to Ten Years, Fair Value
99,465,000 
 
 
 
Investment Securities, Debt Maturities, Over Ten Years, Fair Value
9,596,000 
 
 
 
Investment Securities, Debt Maturities, Fair Value
371,690,000 
 
 
 
Investment Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Less Than One Year, Nominal Yield
4.22% 7
 
 
 
Investment Securities, Debt Maturities, One to Five Years, Nominal Yield
1.68% 7
 
 
 
Investment Securities, Debt Maturities, Six to Ten Years, Nominal Yield
2.21% 7
 
 
 
Investment Securities, Debt Maturities, Over Ten Years, Nominal Yield
2.73% 7
 
 
 
Investment Securities, Debt Maturities, Nominal Yield
2.01% 7
 
 
 
Investment Securities, Debt Maturities, Weighted Average Maturity
4.15 6
 
 
 
Investment Securities, Debt Maturities, Effective tax rate for nominal yield calculation
39.00% 
 
 
 
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
 
 
 
 
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions
149 
53 
6 
 
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
 
 
 
 
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value
271,897,000 
92,768,000 
9,321,000 
 
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value
0 
0 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Fair Value
271,897,000 
92,768,000 
9,321,000 
 
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
 
 
 
 
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses
5,816,000 
483,000 
25,000 
 
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses
0 
0 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses
5,816,000 
483,000 
25,000 
 
Other than Temporary Impairment Losses, Investment Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Lowest Current Credit Rating [Abstract]
 
 
 
 
Investment Securities, Portfolio Concentration US Govt or GSE Securities Not Rated, Carrying Value
0 5
 
 
 
Investment Securities, Portfolio Concentration US Govt or GSE Securities Not Rated, Fair Value
0 5
 
 
 
Investment Securities, Portfolio Concentration Rated AAA to AA, Carrying Value
271,541,000 
 
 
 
Investment Securities, Portfolio Concentration Rated AAA to AA, Fair Value
266,827,000 
 
 
 
Investment Securities, Portfolio Concentration Rated A to BBB, Carrying Value
24,565,000 
 
 
 
Investment Securities, Portfolio Concentration Rated A to BBB, Fair Value
24,834,000 
 
 
 
Investment Securities, Portfolio Concentration Rated Below Investment Grade, Carrying Value
0 
 
 
 
Investment Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
 
Investment Securities, Portfolio Concentration Not Rated, Carrying Value
79,211,000 
 
 
 
Investment Securities, Portfolio Concentration Not Rated, Fair Value
80,029,000 
 
 
 
Other debt securities [Member]
 
 
 
 
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
 
 
 
 
Investment Securities, Amortized Cost
176,301,000 
184,067,000 
183,964,000 
 
Investments Securities, Carrying Value
176,301,000 1
184,067,000 2
183,964,000 3
 
Investment Securities, Fair Value
187,219,000 
206,575,000 
204,795,000 
 
Investment Securities, Gross Unrealized Gain
10,978,000 4
22,528,000 4
20,831,000 4
 
Investment Securities, Gross Unrealized Loss
(60,000)4
(20,000)4
0 4
 
Investment Securities, Debt Maturities, Net Carrying Value [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Less than One Year, Net Carrying Value
9,681,000 
 
 
 
Investment Securities, Debt Maturities, One to Five Years, Net Carrying Value
30,987,000 
 
 
 
Investment Securities, Debt Maturities, Six to Ten Years, Net Carrying Value
35,164,000 
 
 
 
Investment Securities, Debt Maturities, Over Ten Years, Net Carrying Value
100,469,000 
 
 
 
Investment Securities, Debt Maturities, Net Carrying Value
176,301,000 
 
 
 
Investment Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Less Than One Year, Fair Value
9,713,000 
 
 
 
Investment Securities, Debt Maturities, One to Five Years, Fair Value
31,420,000 
 
 
 
Investment Securities, Debt Maturities, Six to Ten Years, Fair Value
36,257,000 
 
 
 
Investment Securities, Debt Maturities, Over Ten Years, Fair Value
109,829,000 
 
 
 
Investment Securities, Debt Maturities, Fair Value
187,219,000 
 
 
 
Investment Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Less Than One Year, Nominal Yield
4.24% 
 
 
 
Investment Securities, Debt Maturities, One to Five Years, Nominal Yield
5.30% 
 
 
 
Investment Securities, Debt Maturities, Six to Ten Years, Nominal Yield
5.57% 
 
 
 
Investment Securities, Debt Maturities, Over Ten Years, Nominal Yield
6.29% 
 
 
 
Investment Securities, Debt Maturities, Nominal Yield
5.86% 
 
 
 
Investment Securities, Debt Maturities, Weighted Average Maturity
9.06 6
 
 
 
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
 
 
 
 
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions
14 
14 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
 
 
 
 
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value
841,000 
881,000 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value
0 
0 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Fair Value
841,000 
881,000 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
 
 
 
 
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses
60,000 
20,000 
0 
 
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses
0 
0 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses
60,000 
20,000 
0 
 
Other than Temporary Impairment Losses, Investment Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Lowest Current Credit Rating [Abstract]
 
 
 
 
Investment Securities, Portfolio Concentration US Govt or GSE Securities Not Rated, Carrying Value
0 5
 
 
 
Investment Securities, Portfolio Concentration US Govt or GSE Securities Not Rated, Fair Value
0 5
 
 
 
Investment Securities, Portfolio Concentration Rated AAA to AA, Carrying Value
167,463,000 
 
 
 
Investment Securities, Portfolio Concentration Rated AAA to AA, Fair Value
178,378,000 
 
 
 
Investment Securities, Portfolio Concentration Rated A to BBB, Carrying Value
600,000 
 
 
 
Investment Securities, Portfolio Concentration Rated A to BBB, Fair Value
600,000 
 
 
 
Investment Securities, Portfolio Concentration Rated Below Investment Grade, Carrying Value
0 
 
 
 
Investment Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
 
Investment Securities, Portfolio Concentration Not Rated, Carrying Value
8,238,000 
 
 
 
Investment Securities, Portfolio Concentration Not Rated, Fair Value
8,241,000 
 
 
 
U.S. agency residential mortgage-backed securities [Member] |
Other [Member]
 
 
 
 
Schedule of Investment (Held-to-Maturity) Securities [Line Items]
 
 
 
 
Investment Securities, Amortized Cost
61,152,000 
77,726,000 
94,126,000 
 
Investments Securities, Carrying Value
64,172,000 1
82,767,000 2
102,347,000 3
 
Investment Securities, Fair Value
66,796,000 
85,943,000 
105,535,000 
 
Investment Securities, Gross Unrealized Gain
2,624,000 4
3,176,000 4
3,188,000 4
 
Investment Securities, Gross Unrealized Loss
0 4
0 4
0 4
 
Investment Securities, Debt Maturities, Net Carrying Value [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Net Carrying Value
64,172,000 
 
 
 
Investment Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Fair Value
66,796,000 
 
 
 
Investment Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
 
Investment Securities, Debt Maturities, Nominal Yield
2.72% 8
 
 
 
Investment Securities, Debt Maturities, Average Expected Life of Mortgage-backed Securities
4.1 
 
 
 
Investments Securities, Transfers [Abstract]
 
 
 
 
Investment Securities, Transferred From Available For Sale Securities Portfolio, Fair Value
 
 
 
131,000,000 
Investment Securities, Transferred From Available For Sale Securities Portfolio, Amortized Cost
 
 
 
118,000,000 
Investment Securities, Transferred From Available For Sale Securities Portfolio, Net Unrealized Gain
3,000,000 
5,000,000 
8,200,000 
13,000,000 
Investment Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
 
 
 
 
Investment Securities, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions
0 
0 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
 
 
 
 
Investment Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value
0 
0 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value
0 
0 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Fair Value
0 
0 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
 
 
 
 
Investment Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses
0 
0 
0 
 
Investment Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses
0 
0 
0 
 
Investment Securities, Continuous Unrealized Loss Position, Aggregate Losses
0 
0 
0 
 
Other than Temporary Impairment Losses, Investment Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Lowest Current Credit Rating [Abstract]
 
 
 
 
Investment Securities, Portfolio Concentration US Govt or GSE Securities Not Rated, Carrying Value
64,172,000 5
 
 
 
Investment Securities, Portfolio Concentration US Govt or GSE Securities Not Rated, Fair Value
66,796,000 5
 
 
 
Investment Securities, Portfolio Concentration Rated AAA to AA, Carrying Value
0 
 
 
 
Investment Securities, Portfolio Concentration Rated AAA to AA, Fair Value
0 
 
 
 
Investment Securities, Portfolio Concentration Rated A to BBB, Carrying Value
0 
 
 
 
Investment Securities, Portfolio Concentration Rated A to BBB, Fair Value
0 
 
 
 
Investment Securities, Portfolio Concentration Rated Below Investment Grade, Carrying Value
0 
 
 
 
Investment Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
 
Investment Securities, Portfolio Concentration Not Rated, Carrying Value
0 
 
 
 
Investment Securities, Portfolio Concentration Not Rated, Fair Value
$ 0 
 
 
 
Available for Sale Securities (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended 3 Months Ended 54 Months Ended 3 Months Ended 54 Months Ended 3 Months Ended 54 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Jun. 30, 2013
Fixed Maturity Securities [Member]
Jun. 30, 2013
U.S. Treasury securities [Member]
Dec. 31, 2012
U.S. Treasury securities [Member]
Jun. 30, 2012
U.S. Treasury securities [Member]
Jun. 30, 2013
Municipal and other tax-exempt securities [Member]
Dec. 31, 2012
Municipal and other tax-exempt securities [Member]
Jun. 30, 2012
Municipal and other tax-exempt securities [Member]
Jun. 30, 2013
Commercial mortgage-backed securities [Member]
Dec. 31, 2012
Commercial mortgage-backed securities [Member]
Jun. 30, 2013
Other debt securities [Member]
Dec. 31, 2012
Other debt securities [Member]
Jun. 30, 2012
Other debt securities [Member]
Jun. 30, 2013
Residential Mortgage Backed Securities [Member]
Dec. 31, 2012
Residential Mortgage Backed Securities [Member]
Jun. 30, 2012
Residential Mortgage Backed Securities [Member]
Jun. 30, 2013
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Dec. 31, 2012
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Jun. 30, 2012
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Jun. 30, 2013
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]
Dec. 31, 2012
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]
Jun. 30, 2012
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]
Jun. 30, 2013
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]
Dec. 31, 2012
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]
Jun. 30, 2012
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]
Jun. 30, 2013
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Government National Mortgage Association Certificates and Obligations (GNMA) [Member]
Dec. 31, 2012
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Government National Mortgage Association Certificates and Obligations (GNMA) [Member]
Jun. 30, 2012
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Government National Mortgage Association Certificates and Obligations (GNMA) [Member]
Jun. 30, 2013
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Other [Member]
Dec. 31, 2012
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Other [Member]
Jun. 30, 2012
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Other [Member]
Jun. 30, 2013
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Dec. 31, 2012
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Jun. 30, 2012
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Jun. 30, 2013
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Jun. 30, 2013
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Alt-A [Member]
Jun. 30, 2013
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Alt-A [Member]
Dec. 31, 2012
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Alt-A [Member]
Jun. 30, 2012
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Alt-A [Member]
Jun. 30, 2013
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Jumbo-A Loans [Member]
Jun. 30, 2013
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Jumbo-A Loans [Member]
Dec. 31, 2012
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Jumbo-A Loans [Member]
Jun. 30, 2012
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Jumbo-A Loans [Member]
Jun. 30, 2013
Perpetual Preferred, Equity Securities and Mutual Funds [Member]
Jun. 30, 2013
Perpetual preferred stock [Member]
Dec. 31, 2012
Perpetual preferred stock [Member]
Jun. 30, 2012
Perpetual preferred stock [Member]
Jun. 30, 2013
Equity securities and mutual funds [Member]
Dec. 31, 2012
Equity securities and mutual funds [Member]
Jun. 30, 2012
Equity securities and mutual funds [Member]
Schedule of Available-for-sale Securities [Line Items]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Amortized Cost Basis
$ 10,655,841 
$ 10,153,162 
$ 10,655,841 
$ 10,153,162 
$ 11,032,634 
$ 2,018,242 
$ 1,061 
$ 1,000 
$ 1,001 
$ 95,974 
$ 84,892 
$ 86,808 
$ 1,885,585 
$ 890,746 
$ 35,622 
$ 35,680 
$ 35,739 
$ 8,595,437 
$ 9,973,552 
$ 9,986,158 
$ 8,303,052 
$ 9,650,650 
$ 9,631,975 
$ 4,648,337 
$ 5,308,463 
$ 5,270,918 
$ 2,695,506 
$ 2,978,608 
$ 3,527,123 
$ 916,646 
$ 1,215,554 
$ 645,103 
$ 42,563 
$ 148,025 
$ 188,831 
$ 292,385 
$ 322,902 
$ 354,183 
$ 292,385 
$ 113,804 
$ 113,804 
$ 124,314 
$ 134,266 
$ 178,581 
$ 178,581 
$ 198,588 
$ 219,917 
$ 42,162 
$ 22,172 
$ 22,171 
$ 22,171 
$ 19,990 
$ 24,593 
$ 21,285 
Available-for-sale Securities, Fair Value
10,698,074 
10,395,415 
10,698,074 
10,395,415 
11,287,221 
1,979,000 
1,060 
1,002 
1,003 
95,103 
87,142 
88,458 
1,846,943 
895,075 
35,894 
36,389 
36,286 
8,669,970 
10,214,984 
10,221,293 
8,372,795 
9,889,821 
9,903,532 
4,687,141 
5,453,549 
5,426,832 
2,715,896 
3,045,564 
3,607,060 
925,081 
1,237,041 
674,006 
44,677 
153,667 
195,634 
297,175 
325,163 
317,761 
297,175 
115,036 
115,036 
123,174 
118,414 
182,139 
182,139 
201,989 
199,347 
49,104 
25,583 
25,072 
23,431 
23,521 
27,557 
24,944 
Available-for-sale Securities, Gross Unrealized Gain
141,240 1
283,564 1
141,240 1
283,564 1
261,184 1
 
0 1
2 1
2 1
1,653 1
2,414 1
2,430 1
343 1
5,006 1
479 1
709 1
559 1
131,590 1
246,910 1
274,772 1
124,556 1
240,332 1
274,154 1
78,285 1
146,247 1
156,699 1
32,994 1
66,956 1
81,679 1
11,163 1
21,487 1
28,973 1
2,114 1
5,642 1
6,803 1
7,034 1
6,578 1
618 1
7,034 1
2,905 1
2,905 1
1,440 1
0 1
4,129 1
4,129 1
5,138 1
618 1
 
3,439 1
2,901 1
1,812 1
3,736 1
3,242 1
3,989 1
Available-for-sale Securities, Gross Unrealized Loss
(96,383)1
(4,621)1
(96,383)1
(4,621)1
(2,414)1
 
(1)1
0 1
0 1
(1,870)1
(164)1
(187)1
(38,985)1
(677)1
(207)1
0 1
(12)1
(55,087)1
(1,295)1
(3,540)1
(54,813)1
(1,161)1
(2,597)1
(39,481)1
(1,161)1
(785)1
(12,604)1
0 1
(1,742)1
(2,728)1
0 1
(70)1
0 1
0 1
0 1
(274)1
(134)1
(943)1
(274)1
0 1
0 1
0 1
0 1
(274)1
(274)1
(134)1
(943)1
 
(28)1
0 1
(552)1
(205)1
(278)1
(330)1
Available-for-Sale Securities, Other Than Temporary Impairments
(2,624)2
(36,690)2
(2,624)2
(36,690)2
(4,183)2
 
0 2
0 2
0 2
(654)2
0 2
(593)2
0 2
0 2
0 2
0 2
0 2
(1,970)2
(4,183)2
(36,097)2
0 2
0 2
0 2
0 2
0 2
0 2
0 2
0 2
0 2
0 2
0 2
0 2
0 2
0 2
0 2
(1,970)2
(4,183)2
(36,097)2
(1,970)2
(1,673)2
(1,673)2
(2,580)2
(15,852)2
(297)2
(297)2
(1,603)2
(20,245)2
 
0 2
0 2
0 2
0 2
0 2
0 2
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Rolling Maturity [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Less than One Year, Amortized Cost Basis
 
 
 
 
 
2,745 
1,061 
 
 
1,684 
 
 
0 
 
0 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, One to Five Years, Amortized Cost Basis
 
 
 
 
 
478,400 
0 
 
 
33,591 
 
 
414,587 
 
30,222 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Six To Ten Years, Amortized Cost Basis
 
 
 
 
 
1,156,553 
0 
 
 
6,382 
 
 
1,150,171 
 
0 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Over Ten Years, Amortized Cost Basis
 
 
 
 
 
380,544 
0 
 
 
54,317 
 
 
320,827 
 
5,400 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Fair Value, Rolling Maturity [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Less than One Year, Fair Value
 
 
 
 
 
2,765 
1,060 
 
 
1,705 
 
 
0 
 
0 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, One to Five Years, Fair Value
 
 
 
 
 
474,547 
0 
 
 
34,777 
 
 
409,069 
 
30,701 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Six to Ten Years, Fair Value
 
 
 
 
 
1,127,637 
0 
 
 
6,621 
 
 
1,121,016 
 
0 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Over Ten Years, Fair Value
 
 
 
 
 
374,051 
0 
 
 
52,000 
 
 
316,858 
 
5,193 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Less than One Year, Nominal Yield
 
 
 
 
 
0.09% 
0.24% 
 
 
0.00% 3
 
 
0.00% 
 
0.00% 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, One to Five Years, Nominal Yield
 
 
 
 
 
1.12% 
0.00% 
 
 
0.95% 3
 
 
1.08% 
 
1.80% 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Six To Ten Years, Nominal Yield
 
 
 
 
 
1.33% 
0.00% 
 
 
0.69% 3
 
 
1.34% 
 
0.00% 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Over Ten Years, Nominal Yield
 
 
 
 
 
1.52% 
0.00% 
 
 
2.55% 3 4
 
 
1.35% 
 
1.41% 4
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Nominal Yield
1.85% 
 
1.85% 
 
 
1.32% 
0.24% 
 
 
1.82% 3
 
 
1.28% 
 
1.74% 
 
 
1.97% 5
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1.30% 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Weighted Average Maturity
 
 
 
 
 
10.84 6
1.68 6
 
 
14.84 6
 
 
10.74 6
 
5.98 6
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Effective tax rate for nominal yield calculation
 
 
 
 
 
 
 
 
 
39.00% 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Average Expected Life of Mortgage-backed Securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3.5 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Debt Maturities, Number of days for interest rates to reset
 
 
 
 
 
 
 
 
 
35 days 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Gross Realized Gain (Loss), Disclosures [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Proceeds
1,083,001 
459,610 
1,837,970 
1,451,551 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Gross realized gains
9,992 
20,481 
15,784 
32,166 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Gross realized losses
(6,239)
0 
(7,176)
(7,354)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Related federal and state income tax expense
1,460 
7,967 
3,349 
9,652 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Pledged as Collateral [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Pledged As Collateral, Amortized cost
5,078,098 
3,552,776 
5,078,098 
3,552,776 
4,070,250 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Pledged As Collateral, Fair value
5,103,507 
3,686,838 
5,103,507 
3,686,838 
4,186,390 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Continuous Unrealized Loss Position, Qualitative Disclosure [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions
347 
153 
347 
153 
106 
 
1 
 
 
86 7
38 
66 8
113 
8 
4 
3 
2 
135 
35 
68 
123 
12 
25 
72 
12 
13 
38 
0 
10 
13 
0 
2 
 
 
 
12 7
23 7
43 8
12 7
10 7
10 7
12 7
16 8
2 7
2 7
11 7
27 8
 
1 
0 
5 
7 
22 
12 
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, OTTI Portion, Number of Positions
 
 
 
 
 
 
 
 
 
21 
 
21 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
10 
10 
12 
16 
2 
2 
10 
27 
 
 
 
 
 
 
 
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value
5,476,851 
1,076,874 
5,476,851 
1,076,874 
448,144 
 
1,060 
 
 
66,168 7
6,150 
21,950 8
1,730,306 
275,065 
5,193 
4,899 
0 
3,665,593 
161,828 
1,041,628 
3,596,297 
161,828 
1,041,628 
2,196,603 
161,828 
528,649 
1,202,545 
0 
438,190 
197,149 
0 
74,789 
 
 
 
69,296 7
0 7
0 8
69,296 7
51,681 7
51,681 7
0 7
0 8
17,615 7
17,615 7
0 7
0 8
 
4,973 
0 
10,717 
3,558 
202 
2,579 
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value
15,677 
321,500 
15,677 
321,500 
159,428 
 
0 
 
 
0 7
26,108 
27,864 8
0 
0 
0 
0 
988 
15,677 
131,159 
292,648 
0 
0 
0 
0 
0 
0 
0 
0 
0 
0 
0 
0 
 
 
 
15,677 7
131,159 7
292,648 8
15,677 7
3,379 7
3,379 7
87,907 7
118,414 8
12,298 7
12,298 7
43,252 7
174,234 8
 
0 
0 
0 
0 
2,161 
0 
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value
5,492,528 
1,398,374 
5,492,528 
1,398,374 
607,572 
 
1,060 
 
 
66,168 7
32,258 
49,814 8
1,730,306 
275,065 
5,193 
4,899 
988 
3,681,270 
292,987 
1,334,276 
3,596,297 
161,828 
1,041,628 
2,196,603 
161,828 
528,649 
1,202,545 
0 
438,190 
197,149 
0 
74,789 
 
 
 
84,973 7
131,159 7
292,648 8
84,973 7
55,060 7
55,060 7
87,907 7
118,414 8
29,913 7
29,913 7
43,252 7
174,234 8
 
4,973 
0 
10,717 
3,558 
2,363 
2,579 
Available-for-sale Securities, Continuous Unrealized Loss Position, Less Than Twelve Months, OTTI Portion, Fair Value
 
 
 
 
 
 
 
 
 
11,731 
 
12,804 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
51,681 
51,681 
0 
0 
17,615 
17,615 
0 
0 
 
 
 
 
 
 
 
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, OTTI Portion, Fair Value
 
 
 
 
 
 
 
 
 
0 
 
0 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3,379 
3,379 
87,907 
118,414 
0 
0 
29,128 
162,754 
 
 
 
 
 
 
 
Available-for-sale Securities, Continuous Unrealized Loss Position, OTTI Portion, Fair Value
 
 
 
 
 
 
 
 
 
11,731 
 
12,804 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
55,060 
55,060 
87,907 
118,414 
17,615 
17,615 
29,128 
162,754 
 
 
 
 
 
 
 
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses
98,295 
4,119 
98,295 
4,119 
1,850 
 
1 
 
 
2,524 7
11 
640 8
38,985 
677 
207 
0 
0 
56,345 
1,161 
2,597 
54,813 
1,161 
2,597 
39,481 
1,161 
785 
12,604 
0 
1,742 
2,728 
0 
70 
 
 
 
1,532 7
0 7
0 8
1,532 7
1,236 7
1,236 7
0 7
0 8
296 7
296 7
0 7
0 8
 
28 
0 
552 
205 
1 
330 
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses
712 
37,192 
712 
37,192 
4,747 
 
0 
 
 
0 7
153 
140 8
0 
0 
0 
0 
12 
712 
4,317 
37,040 
0 
0 
0 
0 
0 
0 
0 
0 
0 
0 
0 
0 
 
 
 
712 7
4,317 7
37,040 8
712 7
437 7
437 7
2,580 7
15,852 8
275 7
275 7
1,737 7
21,188 8
 
0 
0 
0 
0 
277 
0 
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses
99,007 
41,311 
99,007 
41,311 
6,597 
 
1 
 
 
2,524 7
164 
780 8
38,985 
677 
207 
0 
12 
57,057 
5,478 
39,637 
54,813 
1,161 
2,597 
39,481 
1,161 
785 
12,604 
0 
1,742 
2,728 
0 
70 
 
 
 
2,244 7
4,317 7
37,040 8
2,244 7
1,673 7
1,673 7
2,580 7
15,852 8
571 7
571 7
1,737 7
21,188 8
 
28 
0 
552 
205 
278 
330 
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses
 
 
 
 
 
 
 
 
 
654 
 
593 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1,236 
1,236 
0 
0 
296 
296 
0 
0 
 
 
 
 
 
 
 
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, OTTI Portion, Aggregate Losses
 
 
 
 
 
 
 
 
 
0 
 
0 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
437 
437 
2,580 
15,852 
0 
0 
1,602 
20,245 
 
 
 
 
 
 
 
Available-for-sale Securities, Continuous Unrealized Loss Position, OTTI Portion, Aggregate Losses
 
 
 
 
 
 
 
 
 
654 
 
593 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1,673 
1,673 
2,580 
15,852 
296 
296 
1,602 
20,245 
 
 
 
 
 
 
 
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized In Earnings, Net Qualitative Disclosures, Lowest Current Credit Rating [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Portfolio Concentration US Govt or GSE Securities Not Rated, Amortized Cost
10,189,698 9
 
10,189,698 9
 
 
 
1,061 9
 
 
0 9
 
 
1,885,585 9
 
0 9
 
 
8,303,052 9
 
 
8,303,052 9
 
 
4,648,337 9
 
 
2,695,506 9
 
 
916,646 9
 
 
42,563 9
 
 
0 9
 
 
0 9
0 9
0 9
 
 
0 9
0 9
 
 
 
0 9
 
 
0 9
 
 
Available-for-sale Securities, Portfolio Concentration US Govt or GSE Securities Not Rated, Fair Value
10,220,798 9
 
10,220,798 9
 
 
 
1,060 9
 
 
0 9
 
 
1,846,943 9
 
0 9
 
 
8,372,795 9
 
 
8,372,795 9
 
 
4,687,141 9
 
 
2,715,896 9
 
 
925,081 9
 
 
44,677 9
 
 
0 9
 
 
0 9
0 9
0 9
 
 
0 9
0 9
 
 
 
0 9
 
 
0 9
 
 
Available-for-sale securities, Portfolio Concentration Rated AAA To AA, Amortized Cost
66,295 
 
66,295 
 
 
 
0 
 
 
60,895 
 
 
0 
 
5,400 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
0 
0 
 
 
0 
0 
 
 
 
0 
 
 
0 
 
 
Available-for-sale Securities, Portfolio Concentration Rated AAA To AA, Fair Value
66,488 
 
66,488 
 
 
 
0 
 
 
61,295 
 
 
0 
 
5,193 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
0 
0 
 
 
0 
0 
 
 
 
0 
 
 
0 
 
 
Available-for-sale Securities, Portfolio Concentration Rated A To BBB, Amortized Cost
75,089 
 
75,089 
 
 
 
0 
 
 
22,695 
 
 
0 
 
30,222 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
0 
0 
 
 
0 
0 
 
 
 
22,172 
 
 
0 
 
 
Available-for-sale Securities, Portfolio Concentration Rated A To BBB, Fair Value
78,361 
 
78,361 
 
 
 
0 
 
 
22,077 
 
 
0 
 
30,701 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
0 
0 
 
 
0 
0 
 
 
 
25,583 
 
 
0 
 
 
Available-for-sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
304,769 
 
304,769 
 
 
 
0 
 
 
12,384 
 
 
0 
 
0 
 
 
292,385 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
292,385 
 
 
292,385 
113,804 
113,804 
 
 
178,581 
178,581 
 
 
 
0 
 
 
0 
 
 
Available-for-sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
308,906 
 
308,906 
 
 
 
0 
 
 
11,731 
 
 
0 
 
0 
 
 
297,175 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
297,175 
 
 
297,175 
115,036 
115,036 
 
 
182,139 
182,139 
 
 
 
0 
 
 
0 
 
 
Available-for-sale Securities, Portfolio Concentration Not Rated, Amortized Cost
19,990 
 
19,990 
 
 
 
0 
 
 
0 
 
 
0 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
0 
0 
 
 
0 
0 
 
 
 
0 
 
 
19,990 
 
 
Available-for-sale Securities, Portfolio Concentration Not Rated, Fair Value
23,521 
 
23,521 
 
 
 
0 
 
 
0 
 
 
0 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
 
 
0 
0 
0 
 
 
0 
0 
 
 
 
0 
 
 
23,521 
 
 
Other Than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Assumptions Used to Develop Projected Cash Flows [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Unemployment rate
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Increasing to 8% over the next 12 months and remain at 8% thereafter 
Increasing to 8.5% over the next 12 months, dropping to 8% over the following 21 months and holding at 8% thereafter. 
Increasing to 9.5% over the next 12 months, dropping to 8% over the following 21 months and holding at 8% thereafter. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Housing price appreciation/depreciation
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Starting with current depreciated housing prices based on information derived from the FHFA1, appreciating 5% over the next 12 months, then flat for the following 12 months and then appreciating at 2% per year thereafter. 
Starting with current depreciated housing prices based on information derived from the FHFA1, depreciating 2% over the next 12 months, then flat for the following 12 months and then appreciating at 2% per year thereafter. 
Starting with current depreciated housing prices based on information derived from the FHFA1, depreciating 6% over the next 12 months and then appreciating at 2% per year thereafter. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Estimated liquidation costs
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company. 
Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company. 
Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Discount rates
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields. 
Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields. 
Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net Qualitative Disclosures, Privately Issued Mortgage-backed Securities [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Privately Issued Residential Mortgage-backed Securities, Number of Securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
49 
 
 
49 
16 
16 
 
 
33 
33 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Privately Issued Residential Mortgage-backed Securities, Credit losses Recognized [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Available-for-sale Securities, Privately Issued Residential Mortgage-backed Securities, Number of Securities with Credit Losses In Current Period
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1 
 
 
47 
1 
16 
 
 
0 
31 
 
 
 
 
 
 
 
 
 
Amount of Credit Losses Recognized in Current Period
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
$ 552 
 
 
$ 72,438 
$ 552 
$ 48,986 
 
 
$ 0 
$ 23,452 
 
 
 
 
 
 
 
 
 
Rollforward of Credit-Related Other-than-temporary Impairment Recognized in Earnings (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
 
 
 
 
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Beginning Balance
$ 75,475 
$ 72,057 
$ 75,228 
$ 76,131 
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment
552 
135 
552 
248 
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses
0 
723 
247 
4,332 
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold
0 
0 
0 
(7,796)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Ending Balance
$ 76,027 
$ 72,915 
$ 76,027 
$ 72,915 
Securities Fair Value Option Securities (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Schedule of Fair Value Option Securities [Line Items]
 
 
 
Fair Value Option Securities, Fair Value
$ 205,756 
$ 284,296 
$ 325,177 
Fair Value Option Securities, Unrealized Gain or Loss
(8,056)
4,770 
8,994 
U.S. agency residential mortgage-backed securities [Member]
 
 
 
Schedule of Fair Value Option Securities [Line Items]
 
 
 
Fair Value Option Securities, Fair Value
203,816 
257,040 
299,467 
Fair Value Option Securities, Unrealized Gain or Loss
(8,048)
3,314 
8,373 
Corporate Debt Securities [Member]
 
 
 
Schedule of Fair Value Option Securities [Line Items]
 
 
 
Fair Value Option Securities, Fair Value
0 
26,486 
25,710 
Fair Value Option Securities, Unrealized Gain or Loss
0 
1,409 
621 
Other debt securities [Member]
 
 
 
Schedule of Fair Value Option Securities [Line Items]
 
 
 
Fair Value Option Securities, Fair Value
1,940 
770 
0 
Fair Value Option Securities, Unrealized Gain or Loss
$ (8)
$ 47 
$ 0 
Derivatives, Fair Value of Derivatives Contracts (Details) (USD $)
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Derivative Asset, Fair Value, Net [Abstract]
 
 
 
Derivative Asset, Fair Value, Net of Cash Collateral
$ 546,206,000 
$ 338,106,000 
$ 366,204,000 
Derivative Liability, Fair Value, Net [Abstract]
 
 
 
Derivative Liability, Fair Value, Net of Cash Collateral
521,991,000 
283,589,000 
370,053,000 
Increase in cash margin obligation for derivative holdings with a decrease in credit rating from A1 to below investment grade
29,000,000 
 
 
Not Designated as Hedging Instrument [Member]
 
 
 
Notional Amount of Derivatives [Abstract]
 
 
 
Derivative Asset, Notional Amount
19,831,867,000 1
16,188,105,000 1
17,225,157,000 1
Derivative Liability, Notional Amount
19,906,435,000 1
16,547,182,000 1
17,023,801,000 1
Derivative Asset, Fair Value, Net [Abstract]
 
 
 
Derivative Asset, Fair Value, Gross Asset
859,432,000 
404,875,000 
534,862,000 
Derivative Asset, Netting Adjustments
(308,121,000)
(63,305,000)
(118,036,000)
Derivative Assets, Net Fair Value Before Cash Collateral
551,311,000 
341,570,000 
416,826,000 
Derivative Asset, Fair Value, Cash Collateral
(5,105,000)
(3,464,000)
(50,622,000)
Derivative Asset, Fair Value, Net of Cash Collateral
546,206,000 
338,106,000 
366,204,000 
Derivative Liability, Fair Value, Net [Abstract]
 
 
 
Derivative Liability, Fair Value, Gross Liability
855,358,000 
396,263,000 
530,648,000 
Derivative Liability, Netting Adjustments
(308,121,000)
(63,305,000)
(118,036,000)
Derivative Liability, Net Fair Value Before Cash Collateral
547,237,000 
332,958,000 
412,612,000 
Derivative Liability, Fair Value, Cash Collateral
(25,246,000)
(49,369,000)
(42,559,000)
Derivative Liability, Fair Value, Net of Cash Collateral
521,991,000 
283,589,000 
370,053,000 
Not Designated as Hedging Instrument [Member] |
TBA Residential Mortgage-Backed Securities Contracts [Member]
 
 
 
Notional Amount of Derivatives [Abstract]
 
 
 
Derivative Asset, Notional Amount
16,351,395,000 1
12,850,805,000 1
13,724,514,000 1
Derivative Liability, Notional Amount
16,439,531,000 1
13,239,078,000 1
13,579,184,000 1
Derivative Asset, Fair Value, Net [Abstract]
 
 
 
Derivative Asset, Fair Value, Gross Asset
545,290,000 
46,113,000 
144,158,000 
Derivative Asset, Netting Adjustments
(268,087,000)
(15,656,000)
(39,377,000)
Derivative Assets, Net Fair Value Before Cash Collateral
277,203,000 
30,457,000 
104,781,000 
Derivative Asset, Fair Value, Cash Collateral
0 
0 
0 
Derivative Asset, Fair Value, Net of Cash Collateral
277,203,000 
30,457,000 
104,781,000 
Derivative Liability, Fair Value, Net [Abstract]
 
 
 
Derivative Liability, Fair Value, Gross Liability
540,540,000 
43,064,000 
140,873,000 
Derivative Liability, Netting Adjustments
(268,087,000)
(15,656,000)
(39,377,000)
Derivative Liability, Net Fair Value Before Cash Collateral
272,453,000 
27,408,000 
101,496,000 
Derivative Liability, Fair Value, Cash Collateral
0 
(15,467,000)
0 
Derivative Liability, Fair Value, Net of Cash Collateral
272,453,000 
11,941,000 
101,496,000 
Not Designated as Hedging Instrument [Member] |
Interest Rate Swap Contracts [Member]
 
 
 
Notional Amount of Derivatives [Abstract]
 
 
 
Derivative Asset, Notional Amount
1,381,836,000 1
1,319,827,000 1
1,271,138,000 1
Derivative Liability, Notional Amount
1,381,836,000 1
1,319,827,000 1
1,271,138,000 1
Derivative Asset, Fair Value, Net [Abstract]
 
 
 
Derivative Asset, Fair Value, Gross Asset
51,745,000 
72,201,000 
77,121,000 
Derivative Asset, Netting Adjustments
0 
0 
0 
Derivative Assets, Net Fair Value Before Cash Collateral
51,745,000 
72,201,000 
77,121,000 
Derivative Asset, Fair Value, Cash Collateral
0 
0 
0 
Derivative Asset, Fair Value, Net of Cash Collateral
51,745,000 
72,201,000 
77,121,000 
Derivative Liability, Fair Value, Net [Abstract]
 
 
 
Derivative Liability, Fair Value, Gross Liability
52,095,000 
72,724,000 
77,671,000 
Derivative Liability, Netting Adjustments
0 
0 
0 
Derivative Liability, Net Fair Value Before Cash Collateral
52,095,000 
72,724,000 
77,671,000 
Derivative Liability, Fair Value, Cash Collateral
(19,381,000)
(31,945,000)
(29,090,000)
Derivative Liability, Fair Value, Net of Cash Collateral
32,714,000 
40,779,000 
48,581,000 
Not Designated as Hedging Instrument [Member] |
Energy Contracts [Member]
 
 
 
Notional Amount of Derivatives [Abstract]
 
 
 
Derivative Asset, Notional Amount
1,501,959,000 1
1,346,780,000 1
1,667,819,000 1
Derivative Liability, Notional Amount
1,441,957,000 1
1,334,349,000 1
1,653,592,000 1
Derivative Asset, Fair Value, Net [Abstract]
 
 
 
Derivative Asset, Fair Value, Gross Asset
65,414,000 
82,349,000 
150,754,000 
Derivative Asset, Netting Adjustments
(35,376,000)
(44,485,000)
(75,129,000)
Derivative Assets, Net Fair Value Before Cash Collateral
30,038,000 
37,864,000 
75,625,000 
Derivative Asset, Fair Value, Cash Collateral
(2,537,000)
(3,464,000)
(50,622,000)
Derivative Asset, Fair Value, Net of Cash Collateral
27,501,000 
34,400,000 
25,003,000 
Derivative Liability, Fair Value, Net [Abstract]
 
 
 
Derivative Liability, Fair Value, Gross Liability
63,515,000 
83,654,000 
156,690,000 
Derivative Liability, Netting Adjustments
(35,376,000)
(44,485,000)
(75,129,000)
Derivative Liability, Net Fair Value Before Cash Collateral
28,139,000 
39,169,000 
81,561,000 
Derivative Liability, Fair Value, Cash Collateral
(5,865,000)
(1,769,000)
(13,246,000)
Derivative Liability, Fair Value, Net of Cash Collateral
22,274,000 
37,400,000 
68,315,000 
Not Designated as Hedging Instrument [Member] |
Agriculture Contracts [Member]
 
 
 
Notional Amount of Derivatives [Abstract]
 
 
 
Derivative Asset, Notional Amount
207,439,000 1
212,434,000 1
140,722,000 1
Derivative Liability, Notional Amount
207,329,000 1
212,135,000 1
140,255,000 1
Derivative Asset, Fair Value, Net [Abstract]
 
 
 
Derivative Asset, Fair Value, Gross Asset
5,871,000 
3,638,000 
4,655,000 
Derivative Asset, Netting Adjustments
(4,658,000)
(3,164,000)
(3,530,000)
Derivative Assets, Net Fair Value Before Cash Collateral
1,213,000 
474,000 
1,125,000 
Derivative Asset, Fair Value, Cash Collateral
0 
0 
0 
Derivative Asset, Fair Value, Net of Cash Collateral
1,213,000 
474,000 
1,125,000 
Derivative Liability, Fair Value, Net [Abstract]
 
 
 
Derivative Liability, Fair Value, Gross Liability
5,824,000 
3,571,000 
4,604,000 
Derivative Liability, Netting Adjustments
(4,658,000)
(3,164,000)
(3,530,000)
Derivative Liability, Net Fair Value Before Cash Collateral
1,166,000 
407,000 
1,074,000 
Derivative Liability, Fair Value, Cash Collateral
0 
(188,000)
(223,000)
Derivative Liability, Fair Value, Net of Cash Collateral
1,166,000 
219,000 
851,000 
Not Designated as Hedging Instrument [Member] |
Foreign Exchange Contracts [Member]
 
 
 
Notional Amount of Derivatives [Abstract]
 
 
 
Derivative Asset, Notional Amount
177,643,000 1
180,318,000 1
136,815,000 1
Derivative Liability, Notional Amount
177,187,000 1
179,852,000 1
136,483,000 1
Derivative Asset, Fair Value, Net [Abstract]
 
 
 
Derivative Asset, Fair Value, Gross Asset
177,643,000 
180,318,000 
136,815,000 
Derivative Asset, Netting Adjustments
0 
0 
0 
Derivative Assets, Net Fair Value Before Cash Collateral
177,643,000 
180,318,000 
136,815,000 
Derivative Asset, Fair Value, Cash Collateral
0 
0 
0 
Derivative Asset, Fair Value, Net of Cash Collateral
177,643,000 
180,318,000 
136,815,000 
Derivative Liability, Fair Value, Net [Abstract]
 
 
 
Derivative Liability, Fair Value, Gross Liability
177,187,000 
179,852,000 
136,483,000 
Derivative Liability, Netting Adjustments
0 
0 
0 
Derivative Liability, Net Fair Value Before Cash Collateral
177,187,000 
179,852,000 
136,483,000 
Derivative Liability, Fair Value, Cash Collateral
0 
0 
0 
Derivative Liability, Fair Value, Net of Cash Collateral
177,187,000 
179,852,000 
136,483,000 
Not Designated as Hedging Instrument [Member] |
Equity Option Contracts [Member]
 
 
 
Notional Amount of Derivatives [Abstract]
 
 
 
Derivative Asset, Notional Amount
211,595,000 1
211,941,000 1
218,149,000 1
Derivative Liability, Notional Amount
211,595,000 1
211,941,000 1
218,149,000 1
Derivative Asset, Fair Value, Net [Abstract]
 
 
 
Derivative Asset, Fair Value, Gross Asset
13,469,000 
12,593,000 
13,726,000 
Derivative Asset, Netting Adjustments
0 
0 
0 
Derivative Assets, Net Fair Value Before Cash Collateral
13,469,000 
12,593,000 
13,726,000 
Derivative Asset, Fair Value, Cash Collateral
(2,568,000)
0 
0 
Derivative Asset, Fair Value, Net of Cash Collateral
10,901,000 
12,593,000 
13,726,000 
Derivative Liability, Fair Value, Net [Abstract]
 
 
 
Derivative Liability, Fair Value, Gross Liability
13,469,000 
12,593,000 
13,726,000 
Derivative Liability, Netting Adjustments
0 
0 
0 
Derivative Liability, Net Fair Value Before Cash Collateral
13,469,000 
12,593,000 
13,726,000 
Derivative Liability, Fair Value, Cash Collateral
0 
0 
0 
Derivative Liability, Fair Value, Net of Cash Collateral
13,469,000 
12,593,000 
13,726,000 
Not Designated as Hedging Instrument [Member] |
Customer Risk Management Programs [Member]
 
 
 
Notional Amount of Derivatives [Abstract]
 
 
 
Derivative Asset, Notional Amount
19,831,867,000 1
16,122,105,000 1
17,159,157,000 1
Derivative Liability, Notional Amount
19,859,435,000 1
16,497,182,000 1
16,998,801,000 1
Derivative Asset, Fair Value, Net [Abstract]
 
 
 
Derivative Asset, Fair Value, Gross Asset
859,432,000 
397,212,000 
527,229,000 
Derivative Asset, Netting Adjustments
(308,121,000)
(63,305,000)
(118,036,000)
Derivative Assets, Net Fair Value Before Cash Collateral
551,311,000 
333,907,000 
409,193,000 
Derivative Asset, Fair Value, Cash Collateral
(5,105,000)
(3,464,000)
(50,622,000)
Derivative Asset, Fair Value, Net of Cash Collateral
546,206,000 
330,443,000 
358,571,000 
Derivative Liability, Fair Value, Net [Abstract]
 
 
 
Derivative Liability, Fair Value, Gross Liability
852,630,000 
395,458,000 
530,047,000 
Derivative Liability, Netting Adjustments
(308,121,000)
(63,305,000)
(118,036,000)
Derivative Liability, Net Fair Value Before Cash Collateral
544,509,000 
332,153,000 
412,011,000 
Derivative Liability, Fair Value, Cash Collateral
(25,246,000)
(49,369,000)
(42,559,000)
Derivative Liability, Fair Value, Net of Cash Collateral
519,263,000 
282,784,000 
369,452,000 
Not Designated as Hedging Instrument [Member] |
Interest Rate Risk Management Programs [Member]
 
 
 
Notional Amount of Derivatives [Abstract]
 
 
 
Derivative Asset, Notional Amount
0 1
66,000,000 1
66,000,000 1
Derivative Liability, Notional Amount
47,000,000 1
50,000,000 1
25,000,000 1
Derivatives, Notional Amount
47,000,000 1
 
 
Derivative Asset, Fair Value, Net [Abstract]
 
 
 
Derivative Asset, Fair Value, Gross Asset
0 
7,663,000 
7,633,000 
Derivative Asset, Netting Adjustments
0 
0 
0 
Derivative Assets, Net Fair Value Before Cash Collateral
0 
7,663,000 
7,633,000 
Derivative Asset, Fair Value, Cash Collateral
0 
0 
0 
Derivative Asset, Fair Value, Net of Cash Collateral
0 
7,663,000 
7,633,000 
Derivative Liability, Fair Value, Net [Abstract]
 
 
 
Derivative Liability, Fair Value, Gross Liability
2,728,000 
805,000 
601,000 
Derivative Liability, Netting Adjustments
0 
0 
0 
Derivative Liability, Net Fair Value Before Cash Collateral
2,728,000 
805,000 
601,000 
Derivative Liability, Fair Value, Cash Collateral
0 
0 
0 
Derivative Liability, Fair Value, Net of Cash Collateral
$ 2,728,000 
$ 805,000 
$ 601,000 
Derivatives, Derivatives Instruments Gain (Loss) in Income Statement (Details) (Not Designated as Hedging Instrument [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
 
 
 
 
Brokergage and Trading Revenue
$ 5,169 
$ 4,222 
$ 8,000 
$ 8,863 
Gain (Loss) on Derivatives, Net
(2,527)
2,345 
(3,468)
(128)
TBA Residential Mortgage-Backed Securities Contracts [Member]
 
 
 
 
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
 
 
 
 
Brokergage and Trading Revenue
1,716 
186 
1,701 
1,307 
Gain (Loss) on Derivatives, Net
0 
0 
0 
0 
Interest Rate Swap Contracts [Member]
 
 
 
 
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
 
 
 
 
Brokergage and Trading Revenue
768 
1,231 
1,535 
2,144 
Gain (Loss) on Derivatives, Net
0 
0 
0 
0 
Energy Commodity [Member]
 
 
 
 
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
 
 
 
 
Brokergage and Trading Revenue
2,436 
2,588 
4,219 
4,898 
Gain (Loss) on Derivatives, Net
0 
0 
0 
0 
Agricultural Contracts [Member]
 
 
 
 
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
 
 
 
 
Brokergage and Trading Revenue
77 
92 
185 
183 
Gain (Loss) on Derivatives, Net
0 
0 
0 
0 
Foreign Exchange [Member]
 
 
 
 
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
 
 
 
 
Brokergage and Trading Revenue
172 
125 
360 
331 
Gain (Loss) on Derivatives, Net
0 
0 
0 
0 
Equity Option [Member]
 
 
 
 
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
 
 
 
 
Brokergage and Trading Revenue
0 
0 
0 
0 
Gain (Loss) on Derivatives, Net
0 
0 
0 
0 
Customer Risk Management Programs [Member]
 
 
 
 
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
 
 
 
 
Brokergage and Trading Revenue
5,169 
4,222 
8,000 
8,863 
Gain (Loss) on Derivatives, Net
0 
0 
0 
0 
Interest Rate Risk Management Programs [Member]
 
 
 
 
Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract]
 
 
 
 
Brokergage and Trading Revenue
0 
0 
0 
0 
Gain (Loss) on Derivatives, Net
$ (2,527)
$ 2,345 
$ (3,468)
$ (128)
Loans and Allowance for Credit Losses Part 1 (Details) (USD $)
6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Jun. 30, 2013
Commercial [Member]
Dec. 31, 2012
Commercial [Member]
Jun. 30, 2012
Commercial [Member]
Jun. 30, 2013
Commercial [Member]
Energy [Member]
Jun. 30, 2013
Commercial [Member]
Services [Member]
Jun. 30, 2013
Commercial Real Estate [Member]
Dec. 31, 2012
Commercial Real Estate [Member]
Jun. 30, 2012
Commercial Real Estate [Member]
Jun. 30, 2013
Residential Mortgage [Member]
Dec. 31, 2012
Residential Mortgage [Member]
Jun. 30, 2012
Residential Mortgage [Member]
Jun. 30, 2013
Residential Mortgage [Member]
Permanent mortgage [Member]
Jun. 30, 2013
Residential Mortgage [Member]
Permanent mortgages guaranteed by U.S. government agencies [Member]
Jun. 30, 2013
Residential Mortgage [Member]
Home equity [Member]
Jun. 30, 2013
Consumer [Member]
Dec. 31, 2012
Consumer [Member]
Jun. 30, 2012
Consumer [Member]
Loan receivables disclosure [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Loans receivables with fixed rate of interest
$ 7,032,286,000 
$ 6,926,021,000 
$ 6,360,082,000 
$ 4,265,136,000 
$ 4,158,548,000 
$ 3,571,513,000 
 
 
$ 855,806,000 
$ 845,023,000 
$ 882,100,000 
$ 1,768,607,000 
$ 1,747,038,000 
$ 1,708,164,000 
 
 
 
$ 142,737,000 
$ 175,412,000 
$ 198,305,000 
Loans receivables with variable rate of interest
5,286,363,000 
5,251,025,000 
5,071,867,000 
3,422,115,000 
3,458,897,000 
3,429,493,000 
 
 
1,402,597,000 
1,323,350,000 
1,187,416,000 
230,644,000 
251,394,000 
271,994,000 
 
 
 
231,007,000 
217,384,000 
182,964,000 
Loan receivable non-accrual
122,133,000 
134,410,000 
144,482,000 
20,869,000 
24,467,000 
34,529,000 
 
 
58,693,000 
60,626,000 
80,214,000 
40,534,000 
46,608,000 
22,727,000 
 
 
 
2,037,000 
2,709,000 
7,012,000 
Total
12,440,782,000 
12,311,456,000 
11,576,431,000 
7,708,120,000 
7,641,912,000 
7,035,535,000 
2,400,000,000 
2,200,000,000 
2,317,096,000 
2,228,999,000 
2,149,730,000 
2,039,785,000 
2,045,040,000 
2,002,885,000 
 
 
787,000,000 
375,781,000 
395,505,000 
388,281,000 
Accruing loans past due (90 days)
2,460,000 
3,925,000 
691,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Loans receivable, other information [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Amount of total loan portfolio to businesses and individuals in Oklahoma
5,300,000,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Percentage of total loan portfolio to businesses and individuals in Oklahoma (in hundredths)
42.00% 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Amount of total loan portfolio to businesses and individuals in Texas
4,000,000,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Percentage of total loan portfolio to businesses and individuals in Texas (in hundredths)
32.00% 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Amount of loan portfolio to businesses in Oklahoma
 
 
 
3,000,000,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Percentage of loan portfolio to businesses in Oklahoma (in hundredths)
 
 
 
39.00% 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Amount of loan portfolio to businesses in Texas
 
 
 
2,800,000,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Percentage of loan portfolio to businesses in Texas (in hundredths)
 
 
 
37.00% 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Percentage of energy loans in loan portfolio
 
 
 
 
 
 
19.00% 
 
 
 
 
 
 
 
 
 
 
 
 
 
Amount of loans to energy producers
 
 
 
 
 
 
2,100,000,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
Percentage of committed energy production loans secured by oil
 
 
 
 
 
 
59.00% 
 
 
 
 
 
 
 
 
 
 
 
 
 
Percentage of committed energy production loans secured by natural gas
 
 
 
 
 
 
41.00% 
 
 
 
 
 
 
 
 
 
 
 
 
 
Amount of loans with individual balances less than $10 million
 
 
 
 
 
 
 
1,100,000,000 
 
 
 
 
 
 
 
 
 
 
 
 
Maximum loan amount for certain individual loans in category
 
 
 
 
 
 
 
10,000,000 
 
 
 
 
 
 
 
 
 
 
 
 
Percentage of loan portfolio secured by property in Texas (in hundredths)
 
 
 
 
 
 
 
 
35.00% 
 
 
 
 
 
 
 
 
 
 
 
Percentage of loan portfolio secured by property in Oklahoma (in hundredths)
 
 
 
 
 
 
 
 
25.00% 
 
 
 
 
 
 
 
 
 
 
 
Minimum FICO required for jumbo loan approval
 
 
 
 
 
 
 
 
 
 
 
 
 
 
720 
 
 
 
 
 
Maximum debt-to-income ratio on jumbo loans (in hundredths)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
38.00% 
 
 
 
 
 
Minimum loan-to-value ratio on jumbo loans (in hundredths)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
60.00% 
 
 
 
 
 
Maximum loan-to-value ratio on jumbo loans (in hundredths)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
100.00% 
 
 
 
 
 
Minimum period for fixed rate on variable rate jumbo loans (in years)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3 years 
 
 
 
 
 
Maximum period for fixed rate on variable rate jumbo loans (in years)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
10 years 
 
 
 
 
 
Amount of loans guaranteed by US government and previously sold into GNMA mortgage pools
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
157,000,000 
 
 
 
 
Percentage of home equity portfolio comprised of junior lien loans
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
30.00% 
 
 
 
Percentage of home equity portfolio comprised of first lien loans
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
70.00% 
 
 
 
Percentage of junior lien home equity loans that are amortizing term loans
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
76.00% 
 
 
 
Percentage of junior lien home equity loans that are revolving lines of credit
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
24.00% 
 
 
 
Home equity loans, description
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Home equity loans generally require a minimum FICO score of 700 and a maximum DTI of 40%. 
 
 
 
Home equity loans, maximum
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
400,000 
 
 
 
Home equity loans, revolving period
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
5 years 
 
 
 
Home equity loans, amortization period following revolving period
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
15 years 
 
 
 
Home equity loans, discretionary additional revolving period
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
5 years 
 
 
 
Credit Commitments [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Outstanding commitments to extend credit
7,000,000,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Outstanding standby letters of credit
454,000,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Outstanding commercial letters of credit
$ 11,000,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Loans and Allowances for Credit Losses Part 2 (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Allowance for loan losses [Roll Forward]
 
 
 
 
 
Beginning balance
$ 205,965 
$ 244,209 
$ 215,507 
$ 253,481 
 
Provision for loan losses
(499)
(7,699)
(7,689)
(8,486)
 
Loans charged off
(8,552)
(11,543)
(17,461)
(25,217)
 
Recoveries
6,210 
6,702 
12,767 
11,891 
 
Ending balance
203,124 
231,669 
203,124 
231,669 
 
Allowance for off-balance sheet credit losses [Roll Forward]
 
 
 
 
 
Beginning balance
1,105 
10,048 
1,915 
9,261 
 
Provision for off-balance sheet credit losses
499 
(301)
(311)
486 
 
Ending balance
1,604 
9,747 
1,604 
9,747 
 
Total provision for credit losses
0 
(8,000)
(8,000)
(8,000)
 
Recorded investment [Abstract]
 
 
 
 
 
Collectively measured for impairment, recorded investment
12,318,732 
11,431,948 
12,318,732 
11,431,948 
12,177,046 
Individually measured for impairment, recorded investment
122,050 
144,483 
122,050 
144,483 
134,410 
Total
12,440,782 
11,576,431 
12,440,782 
11,576,431 
12,311,456 
Related allowance [Abstract]
 
 
 
 
 
Collectively measured for impairment, related allowance
158,631 
188,976 
158,631 
188,976 
167,087 
Individually measured for impairment, related allowance
2,044 
1,835 
2,044 
1,835 
4,233 
Total measured for impairment, related allowance
203,124 
231,669 
203,124 
231,669 
 
Commercial [Member]
 
 
 
 
 
Allowance for loan losses [Roll Forward]
 
 
 
 
 
Beginning balance
66,419 
85,972 
65,280 
83,443 
 
Provision for loan losses
223 
(2,526)
(1,733)
991 
 
Loans charged off
(4,538)
(4,094)
(4,836)
(7,028)
 
Recoveries
1,940 
4,125 
5,333 
6,071 
 
Ending balance
64,044 
83,477 
64,044 
83,477 
 
Allowance for off-balance sheet credit losses [Roll Forward]
 
 
 
 
 
Beginning balance
405 
8,362 
475 
7,906 
 
Provision for off-balance sheet credit losses
(3)
(138)
(73)
318 
 
Ending balance
402 
8,224 
402 
8,224 
 
Total provision for credit losses
220 
(2,664)
(1,806)
1,309 
 
Recorded investment [Abstract]
 
 
 
 
 
Collectively measured for impairment, recorded investment
7,687,251 
7,001,006 
7,687,251 
7,001,006 
7,617,445 
Individually measured for impairment, recorded investment
20,869 
34,529 
20,869 
34,529 
24,467 
Total
7,708,120 
7,035,535 
7,708,120 
7,035,535 
7,641,912 
Related allowance [Abstract]
 
 
 
 
 
Collectively measured for impairment, related allowance
63,492 
83,199 
63,492 
83,199 
65,050 
Individually measured for impairment, related allowance
552 
278 
552 
278 
230 
Total measured for impairment, related allowance
64,044 
83,477 
64,044 
83,477 
 
Commercial Real Estate [Member]
 
 
 
 
 
Allowance for loan losses [Roll Forward]
 
 
 
 
 
Beginning balance
48,528 
62,742 
54,884 
67,034 
 
Provision for loan losses
(1,118)
(6,264)
(3,798)
(5,143)
 
Loans charged off
(450)
(1,216)
(5,250)
(7,941)
 
Recoveries
2,727 
544 
3,851 
1,856 
 
Ending balance
49,687 
55,806 
49,687 
55,806 
 
Allowance for off-balance sheet credit losses [Roll Forward]
 
 
 
 
 
Beginning balance
618 
1,575 
1,353 
1,250 
 
Provision for off-balance sheet credit losses
560 
(150)
(175)
175 
 
Ending balance
1,178 
1,425 
1,178 
1,425 
 
Total provision for credit losses
(558)
(6,414)
(3,973)
(4,968)
 
Recorded investment [Abstract]
 
 
 
 
 
Collectively measured for impairment, recorded investment
2,258,403 
2,069,516 
2,258,403 
2,069,516 
2,168,373 
Individually measured for impairment, recorded investment
58,693 
80,214 
58,693 
80,214 
60,626 
Total
2,317,096 
2,149,730 
2,317,096 
2,149,730 
2,228,999 
Related allowance [Abstract]
 
 
 
 
 
Collectively measured for impairment, related allowance
48,493 
54,526 
48,493 
54,526 
51,775 
Individually measured for impairment, related allowance
1,194 
1,280 
1,194 
1,280 
3,109 
Total measured for impairment, related allowance
49,687 
55,806 
49,687 
55,806 
 
Residential Mortgage [Member]
 
 
 
 
 
Allowance for loan losses [Roll Forward]
 
 
 
 
 
Beginning balance
40,222 
41,628 
41,703 
46,476 
 
Provision for loan losses
597 
4,371 
323 
898 
 
Loans charged off
(2,057)
(4,061)
(3,836)
(5,847)
 
Recoveries
444 
750 
1,016 
1,161 
 
Ending balance
39,206 
42,688 
39,206 
42,688 
 
Allowance for off-balance sheet credit losses [Roll Forward]
 
 
 
 
 
Beginning balance
72 
82 
78 
91 
 
Provision for off-balance sheet credit losses
(66)
(2)
(72)
(11)
 
Ending balance
6 
80 
6 
80 
 
Total provision for credit losses
531 
4,369 
251 
887 
 
Recorded investment [Abstract]
 
 
 
 
 
Collectively measured for impairment, recorded investment
1,999,334 
1,980,158 
1,999,334 
1,980,158 
1,998,432 
Individually measured for impairment, recorded investment
40,451 
22,727 
40,451 
22,727 
46,608 
Total
2,039,785 
2,002,885 
2,039,785 
2,002,885 
2,045,040 
Related allowance [Abstract]
 
 
 
 
 
Collectively measured for impairment, related allowance
39,028 
42,453 
39,028 
42,453 
40,934 
Individually measured for impairment, related allowance
178 
235 
178 
235 
769 
Total measured for impairment, related allowance
39,206 
42,688 
39,206 
42,688 
 
Consumer [Member]
 
 
 
 
 
Allowance for loan losses [Roll Forward]
 
 
 
 
 
Beginning balance
7,984 
9,517 
9,453 
10,178 
 
Provision for loan losses
162 
212 
(743)
260 
 
Loans charged off
(1,507)
(2,172)
(3,539)
(4,401)
 
Recoveries
1,099 
1,283 
2,567 
2,803 
 
Ending balance
7,738 
8,840 
7,738 
8,840 
 
Allowance for off-balance sheet credit losses [Roll Forward]
 
 
 
 
 
Beginning balance
10 
29 
9 
14 
 
Provision for off-balance sheet credit losses
8 
(11)
9 
4 
 
Ending balance
18 
18 
18 
18 
 
Total provision for credit losses
170 
201 
(734)
264 
 
Recorded investment [Abstract]
 
 
 
 
 
Collectively measured for impairment, recorded investment
373,744 
381,268 
373,744 
381,268 
392,796 
Individually measured for impairment, recorded investment
2,037 
7,013 
2,037 
7,013 
2,709 
Total
375,781 
388,281 
375,781 
388,281 
395,505 
Related allowance [Abstract]
 
 
 
 
 
Collectively measured for impairment, related allowance
7,618 
8,798 
7,618 
8,798 
9,328 
Individually measured for impairment, related allowance
120 
42 
120 
42 
125 
Total measured for impairment, related allowance
7,738 
8,840 
7,738 
8,840 
 
Total Portfolio Segment Allocation [Member]
 
 
 
 
 
Allowance for loan losses [Roll Forward]
 
 
 
 
 
Beginning balance
 
 
 
 
171,320 
Ending balance
160,675 
190,811 
160,675 
190,811 
171,320 
Recorded investment [Abstract]
 
 
 
 
 
Collectively measured for impairment, recorded investment
12,318,732 
11,431,948 
12,318,732 
11,431,948 
12,177,046 
Individually measured for impairment, recorded investment
122,050 
144,483 
122,050 
144,483 
134,410 
Total
12,440,782 
11,576,431 
12,440,782 
11,576,431 
12,311,456 
Related allowance [Abstract]
 
 
 
 
 
Collectively measured for impairment, related allowance
158,631 
188,976 
158,631 
188,976 
167,087 
Individually measured for impairment, related allowance
2,044 
1,835 
2,044 
1,835 
4,233 
Total measured for impairment, related allowance
160,675 
190,811 
160,675 
190,811 
171,320 
Nonspecific allowance [Member]
 
 
 
 
 
Allowance for loan losses [Roll Forward]
 
 
 
 
 
Beginning balance
42,812 
44,350 
44,187 
46,350 
 
Provision for loan losses
(363)
(3,492)
(1,738)
(5,492)
 
Loans charged off
0 
0 
0 
0 
 
Recoveries
0 
0 
0 
0 
 
Ending balance
42,449 
40,858 
42,449 
40,858 
 
Allowance for off-balance sheet credit losses [Roll Forward]
 
 
 
 
 
Beginning balance
0 
0 
0 
0 
 
Provision for off-balance sheet credit losses
0 
0 
0 
0 
 
Ending balance
0 
0 
0 
0 
 
Total provision for credit losses
(363)
(3,492)
(1,738)
(5,492)
 
Recorded investment [Abstract]
 
 
 
 
 
Collectively measured for impairment, recorded investment
0 
0 
0 
0 
0 
Individually measured for impairment, recorded investment
0 
0 
0 
0 
0 
Total
0 
0 
0 
0 
0 
Related allowance [Abstract]
 
 
 
 
 
Collectively measured for impairment, related allowance
0 
0 
0 
0 
0 
Individually measured for impairment, related allowance
0 
0 
0 
0 
0 
Total measured for impairment, related allowance
$ 42,449 
$ 40,858 
$ 42,449 
$ 40,858 
 
Loans and Allowances for Credit Losses Part 3 (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
$ 10,480,793 
 
$ 10,350,320 
$ 9,650,883 
 
 
Non-Graded, Recorded Investment
1,959,989 
 
1,961,136 
1,925,548 
 
 
Total
12,440,782 
 
12,311,456 
11,576,431 
 
 
Related Allowance [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Allowance
118,586 
 
127,322 
147,045 
 
 
Non-Graded, Allowance
42,089 
 
43,998 
43,766 
 
 
Allowance For Financing Receivable Total
203,124 
205,965 
215,507 
231,669 
244,209 
253,481 
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
10,303,771 
 
10,111,255 
9,365,144 
 
 
Non-Graded, Recorded Investment
1,924,100 
 
1,924,879 
1,907,383 
 
 
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
90,778 
 
140,912 
159,422 
 
 
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
86,244 
 
98,153 
126,317 
 
 
Non-Graded, Recorded Investment
35,889 
 
36,257 
18,165 
 
 
Commercial [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
7,689,954 
 
7,624,442 
7,017,925 
 
 
Non-Graded, Recorded Investment
18,166 
 
17,470 
17,610 
 
 
Total
7,708,120 
 
7,641,912 
7,035,535 
 
 
Related Allowance [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Allowance
62,830 
 
64,181 
82,357 
 
 
Non-Graded, Allowance
1,214 
 
1,099 
1,120 
 
 
Allowance For Financing Receivable Total
64,044 
 
65,280 
83,477 
 
 
Commercial [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
7,624,152 
 
7,533,757 
6,908,788 
 
 
Non-Graded, Recorded Investment
18,105 
 
17,406 
17,510 
 
 
Commercial [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
44,994 
 
66,282 
74,708 
 
 
Commercial [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
20,808 
 
24,403 
34,429 
 
 
Non-Graded, Recorded Investment
61 
 
64 
100 
 
 
Commercial [Member] |
Energy [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
2,384,746 
 
2,460,659 
2,268,852 
 
 
Commercial [Member] |
Energy [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
2,378,187 
 
2,448,954 
2,254,806 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial [Member] |
Energy [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
4,282 
 
9,245 
10,959 
 
 
Commercial [Member] |
Energy [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
2,277 
 
2,460 
3,087 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial [Member] |
Services [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
2,204,253 
 
2,164,186 
1,988,330 
 
 
Commercial [Member] |
Services [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
2,170,695 
 
2,119,734 
1,937,953 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial [Member] |
Services [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
26,110 
 
32,362 
40,254 
 
 
Commercial [Member] |
Services [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
7,448 
 
12,090 
10,123 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial [Member] |
Wholesale/retail [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
1,175,543 
 
1,106,439 
946,684 
 
 
Commercial [Member] |
Wholesale/retail [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
1,167,215 
 
1,093,413 
930,912 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial [Member] |
Wholesale/retail [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
1,628 
 
9,949 
11,597 
 
 
Commercial [Member] |
Wholesale/retail [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
6,700 
 
3,077 
4,175 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial [Member] |
Manufacturing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
386,133 
 
348,484 
347,086 
 
 
Commercial [Member] |
Manufacturing [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
381,729 
 
337,132 
325,024 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial [Member] |
Manufacturing [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
3,528 
 
9,345 
9,832 
 
 
Commercial [Member] |
Manufacturing [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
876 
 
2,007 
12,230 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial [Member] |
Integrated food services [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
163,551 
 
191,106 
206,269 
 
 
Commercial [Member] |
Integrated food services [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
158,674 
 
190,422 
205,573 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial [Member] |
Integrated food services [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
4,877 
 
0 
696 
 
 
Commercial [Member] |
Integrated food services [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
0 
 
684 
0 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial [Member] |
Healthcare [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
1,118,810 
 
1,081,406 
984,340 
 
 
Commercial [Member] |
Healthcare [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
1,116,089 
 
1,077,773 
979,985 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial [Member] |
Healthcare [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
51 
 
467 
1,045 
 
 
Commercial [Member] |
Healthcare [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
2,670 
 
3,166 
3,310 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial [Member] |
Other commercial and industrial [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
275,084 
 
289,632 
293,974 
 
 
Commercial [Member] |
Other commercial and industrial [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
251,563 
 
266,329 
274,535 
 
 
Non-Graded, Recorded Investment
18,105 
 
17,406 
17,510 
 
 
Commercial [Member] |
Other commercial and industrial [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
4,518 
 
4,914 
325 
 
 
Commercial [Member] |
Other commercial and industrial [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
837 
 
919 
1,504 
 
 
Non-Graded, Recorded Investment
61 
 
64 
100 
 
 
Commercial Real Estate [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
2,317,096 
 
2,228,999 
2,149,724 
 
 
Non-Graded, Recorded Investment
0 
 
0 
6 
 
 
Total
2,317,096 
 
2,228,999 
2,149,730 
 
 
Related Allowance [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Allowance
49,687 
 
54,884 
55,806 
 
 
Non-Graded, Allowance
0 
 
0 
0 
 
 
Allowance For Financing Receivable Total
49,687 
 
54,884 
55,806 
 
 
Commercial Real Estate [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
2,218,338 
 
2,105,105 
2,001,253 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial Real Estate [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
40,065 
 
63,268 
68,263 
 
 
Commercial Real Estate [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
58,693 
 
60,626 
80,208 
 
 
Non-Graded, Recorded Investment
0 
 
0 
6 
 
 
Commercial Real Estate [Member] |
Construction and land development [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
225,654 
 
253,093 
292,097 
 
 
Commercial Real Estate [Member] |
Construction and land development [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
184,216 
 
204,010 
219,301 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial Real Estate [Member] |
Construction and land development [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
20,303 
 
22,952 
26,746 
 
 
Commercial Real Estate [Member] |
Construction and land development [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
21,135 
 
26,131 
46,050 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial Real Estate [Member] |
Retail [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
553,412 
 
522,786 
506,146 
 
 
Commercial Real Estate [Member] |
Retail [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
540,872 
 
508,342 
489,948 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial Real Estate [Member] |
Retail [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
4,134 
 
6,327 
8,290 
 
 
Commercial Real Estate [Member] |
Retail [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
8,406 
 
8,117 
7,908 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial Real Estate [Member] |
Office [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
459,558 
 
427,872 
395,339 
 
 
Commercial Real Estate [Member] |
Office [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
450,790 
 
405,763 
372,398 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial Real Estate [Member] |
Office [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
940 
 
15,280 
12,352 
 
 
Commercial Real Estate [Member] |
Office [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
7,828 
 
6,829 
10,589 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial Real Estate [Member] |
Multifamily [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
500,452 
 
402,896 
358,416 
 
 
Commercial Real Estate [Member] |
Multifamily [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
491,864 
 
393,566 
348,520 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial Real Estate [Member] |
Multifamily [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
2,141 
 
6,624 
6,677 
 
 
Commercial Real Estate [Member] |
Multifamily [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
6,447 
 
2,706 
3,219 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial Real Estate [Member] |
Industrial [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
253,990 
 
245,994 
228,725 
 
 
Commercial Real Estate [Member] |
Industrial [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
253,732 
 
241,761 
228,452 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial Real Estate [Member] |
Industrial [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
258 
 
265 
273 
 
 
Commercial Real Estate [Member] |
Industrial [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
0 
 
3,968 
0 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial Real Estate [Member] |
Other commercial real estate [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
324,030 
 
376,358 
369,007 
 
 
Commercial Real Estate [Member] |
Other commercial real estate [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
296,864 
 
351,663 
342,634 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Commercial Real Estate [Member] |
Other commercial real estate [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
12,289 
 
11,820 
13,925 
 
 
Commercial Real Estate [Member] |
Other commercial real estate [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
14,877 
 
12,875 
12,442 
 
 
Non-Graded, Recorded Investment
0 
 
0 
6 
 
 
Residential Mortgage [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
230,359 
 
265,503 
286,499 
 
 
Non-Graded, Recorded Investment
1,809,426 
 
1,779,537 
1,716,386 
 
 
Total
2,039,785 
 
2,045,040 
2,002,885 
 
 
Related Allowance [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Allowance
3,753 
 
5,270 
6,987 
 
 
Non-Graded, Allowance
35,453 
 
36,433 
35,701 
 
 
Allowance For Financing Receivable Total
39,206 
 
41,703 
42,688 
 
 
Residential Mortgage [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
219,222 
 
242,823 
265,891 
 
 
Non-Graded, Recorded Investment
1,775,240 
 
1,745,338 
1,700,869 
 
 
Residential Mortgage [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
4,789 
 
10,271 
13,398 
 
 
Residential Mortgage [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
6,348 
 
12,409 
7,210 
 
 
Non-Graded, Recorded Investment
34,186 
 
34,199 
15,517 
 
 
Residential Mortgage [Member] |
Permanent mortgage [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
1,095,871 
 
1,123,965 
1,144,839 
 
 
Residential Mortgage [Member] |
Permanent mortgage [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
219,222 
 
242,823 
265,891 
 
 
Non-Graded, Recorded Investment
839,113 
 
831,008 
847,414 
 
 
Residential Mortgage [Member] |
Permanent mortgage [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
4,789 
 
10,271 
13,398 
 
 
Residential Mortgage [Member] |
Permanent mortgage [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
6,348 
 
12,409 
7,210 
 
 
Non-Graded, Recorded Investment
26,399 
 
27,454 
10,926 
 
 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
156,887 
 
160,444 
162,240 
 
 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
0 
 
0 
0 
 
 
Non-Graded, Recorded Investment
156,804 
 
159,955 
162,240 
 
 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
0 
 
0 
0 
 
 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
0 
 
0 
0 
 
 
Non-Graded, Recorded Investment
83 
 
489 
0 
 
 
Residential Mortgage [Member] |
Home equity [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
787,027 
 
760,631 
695,806 
 
 
Residential Mortgage [Member] |
Home equity [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
0 
 
0 
0 
 
 
Non-Graded, Recorded Investment
779,323 
 
754,375 
691,215 
 
 
Residential Mortgage [Member] |
Home equity [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
0 
 
0 
0 
 
 
Residential Mortgage [Member] |
Home equity [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
0 
 
0 
0 
 
 
Non-Graded, Recorded Investment
7,704 
 
6,256 
4,591 
 
 
Consumer [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
243,384 
 
231,376 
196,735 
 
 
Non-Graded, Recorded Investment
132,397 
 
164,129 
191,546 
 
 
Total
375,781 
 
395,505 
388,281 
 
 
Related Allowance [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Allowance
2,316 
 
2,987 
1,895 
 
 
Non-Graded, Allowance
5,422 
 
6,466 
6,945 
 
 
Allowance For Financing Receivable Total
7,738 
 
9,453 
8,840 
 
 
Consumer [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
242,059 
 
229,570 
189,212 
 
 
Non-Graded, Recorded Investment
130,755 
 
162,135 
189,004 
 
 
Consumer [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
930 
 
1,091 
3,053 
 
 
Consumer [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
395 
 
715 
4,470 
 
 
Non-Graded, Recorded Investment
1,642 
 
1,994 
2,542 
 
 
Consumer [Member] |
Indirect automobile [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
16,555 
 
34,735 
62,938 
 
 
Consumer [Member] |
Indirect automobile [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
0 
 
0 
0 
 
 
Non-Graded, Recorded Investment
15,367 
 
33,157 
60,681 
 
 
Consumer [Member] |
Indirect automobile [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
0 
 
0 
0 
 
 
Consumer [Member] |
Indirect automobile [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
0 
 
0 
0 
 
 
Non-Graded, Recorded Investment
1,188 
 
1,578 
2,257 
 
 
Consumer [Member] |
Other consumer [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Total
359,226 
 
360,770 
325,343 
 
 
Consumer [Member] |
Other consumer [Member] |
Performing [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
242,059 
 
229,570 
189,212 
 
 
Non-Graded, Recorded Investment
115,388 
 
128,978 
128,323 
 
 
Consumer [Member] |
Other consumer [Member] |
Potential Problem [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
930 
 
1,091 
3,053 
 
 
Consumer [Member] |
Other consumer [Member] |
Nonaccrual [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
395 
 
715 
4,470 
 
 
Non-Graded, Recorded Investment
454 
 
416 
285 
 
 
Allocated Class of Receivables [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
10,480,793 
 
10,350,320 
9,650,883 
 
 
Non-Graded, Recorded Investment
1,959,989 
 
1,961,136 
1,925,548 
 
 
Total
12,440,782 
 
12,311,456 
11,576,431 
 
 
Related Allowance [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Allowance
118,586 
 
127,322 
147,045 
 
 
Non-Graded, Allowance
42,089 
 
43,998 
43,766 
 
 
Allowance For Financing Receivable Total
160,675 
 
171,320 
190,811 
 
 
Nonspecific allowance [Member]
 
 
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Recorded Investment
0 
 
0 
0 
 
 
Non-Graded, Recorded Investment
0 
 
0 
0 
 
 
Total
0 
 
0 
0 
 
 
Related Allowance [Abstract]
 
 
 
 
 
 
Internally Risk Graded, Allowance
0 
 
0 
0 
 
 
Non-Graded, Allowance
0 
 
0 
0 
 
 
Allowance For Financing Receivable Total
$ 42,449 
$ 42,812 
$ 44,187 
$ 40,858 
$ 44,350 
$ 46,350 
Loans and Allowances for Credit Losses Part 4 (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
$ 321,435 
$ 382,472 
$ 321,435 
$ 382,472 
$ 360,258 
Impaired loans, recorded investment, total
278,937 
306,723 
278,937 
306,723 
294,365 
Impaired loans, recorded investment with no related allowance
273,210 
300,528 
273,210 
300,528 
283,039 
Impaired loans, recorded investment with related allowance
5,727 
6,195 
5,727 
6,195 
11,326 
Impaired loans, related allowance
2,044 
1,835 
2,044 
1,835 
4,233 
Impaired loans, average recorded investment
285,277 
341,462 
290,244 
358,849 
 
Impaired loans, interest income recognized
1,913 
2,078 
4,011 
4,154 
 
Commercial [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
35,747 
57,285 
35,747 
57,285 
43,230 
Impaired loans, recorded investment, total
20,869 
34,529 
20,869 
34,529 
24,467 
Impaired loans, recorded investment with no related allowance
19,612 
33,082 
19,612 
33,082 
23,140 
Impaired loans, recorded investment with related allowance
1,257 
1,447 
1,257 
1,447 
1,327 
Impaired loans, related allowance
552 
278 
552 
278 
230 
Impaired loans, average recorded investment
20,366 
48,141 
22,670 
51,672 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial [Member] |
Energy [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
2,277 
3,297 
2,277 
3,297 
2,460 
Impaired loans, recorded investment, total
2,277 
3,087 
2,277 
3,087 
2,460 
Impaired loans, recorded investment with no related allowance
2,277 
3,087 
2,277 
3,087 
2,460 
Impaired loans, recorded investment with related allowance
0 
0 
0 
0 
0 
Impaired loans, related allowance
0 
0 
0 
0 
0 
Impaired loans, average recorded investment
2,327 
1,712 
2,369 
1,712 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial [Member] |
Services [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
9,631 
18,858 
9,631 
18,858 
15,715 
Impaired loans, recorded investment, total
7,448 
10,123 
7,448 
10,123 
12,090 
Impaired loans, recorded investment with no related allowance
6,283 
9,996 
6,283 
9,996 
11,940 
Impaired loans, recorded investment with related allowance
1,165 
127 
1,165 
127 
150 
Impaired loans, related allowance
493 
127 
493 
127 
149 
Impaired loans, average recorded investment
8,461 
11,507 
9,769 
13,546 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial [Member] |
Wholesale/retail [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
10,916 
5,763 
10,916 
5,763 
9,186 
Impaired loans, recorded investment, total
6,700 
4,175 
6,700 
4,175 
3,077 
Impaired loans, recorded investment with no related allowance
6,656 
4,096 
6,656 
4,096 
3,016 
Impaired loans, recorded investment with related allowance
44 
79 
44 
79 
61 
Impaired loans, related allowance
11 
20 
11 
20 
15 
Impaired loans, average recorded investment
4,470 
9,782 
4,889 
12,678 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial [Member] |
Manufacturing [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
1,168 
15,864 
1,168 
15,864 
2,447 
Impaired loans, recorded investment, total
876 
12,230 
876 
12,230 
2,007 
Impaired loans, recorded investment with no related allowance
876 
12,230 
876 
12,230 
2,007 
Impaired loans, recorded investment with related allowance
0 
0 
0 
0 
0 
Impaired loans, related allowance
0 
0 
0 
0 
0 
Impaired loans, average recorded investment
1,362 
17,816 
1,442 
17,641 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial [Member] |
Healthcare [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
3,357 
4,400 
3,357 
4,400 
4,256 
Impaired loans, recorded investment, total
2,670 
3,310 
2,670 
3,310 
3,166 
Impaired loans, recorded investment with no related allowance
2,622 
2,069 
2,622 
2,069 
2,050 
Impaired loans, recorded investment with related allowance
48 
1,241 
48 
1,241 
1,116 
Impaired loans, related allowance
48 
131 
48 
131 
66 
Impaired loans, average recorded investment
2,816 
5,628 
2,918 
4,398 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial [Member] |
Integrated food services [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
0 
0 
0 
0 
684 
Impaired loans, recorded investment, total
0 
0 
0 
0 
684 
Impaired loans, recorded investment with no related allowance
0 
0 
0 
0 
684 
Impaired loans, recorded investment with related allowance
0 
0 
0 
0 
0 
Impaired loans, related allowance
0 
0 
0 
0 
0 
Impaired loans, average recorded investment
0 
0 
342 
0 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial [Member] |
Other commercial and industrial [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
8,398 
9,103 
8,398 
9,103 
8,482 
Impaired loans, recorded investment, total
898 
1,604 
898 
1,604 
983 
Impaired loans, recorded investment with no related allowance
898 
1,604 
898 
1,604 
983 
Impaired loans, recorded investment with related allowance
0 
0 
0 
0 
0 
Impaired loans, related allowance
0 
0 
0 
0 
0 
Impaired loans, average recorded investment
930 
1,696 
941 
1,697 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial Real Estate [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
67,467 
119,669 
67,467 
119,669 
86,001 
Impaired loans, recorded investment, total
58,693 
80,214 
58,693 
80,214 
60,626 
Impaired loans, recorded investment with no related allowance
54,595 
76,125 
54,595 
76,125 
53,051 
Impaired loans, recorded investment with related allowance
4,098 
4,089 
4,098 
4,089 
7,575 
Impaired loans, related allowance
1,194 
1,280 
1,194 
1,280 
3,109 
Impaired loans, average recorded investment
61,936 
83,346 
59,661 
89,704 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial Real Estate [Member] |
Construction and land development [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
24,752 
78,447 
24,752 
78,447 
44,721 
Impaired loans, recorded investment, total
21,135 
46,050 
21,135 
46,050 
26,131 
Impaired loans, recorded investment with no related allowance
20,841 
45,477 
20,841 
45,477 
25,575 
Impaired loans, recorded investment with related allowance
294 
573 
294 
573 
556 
Impaired loans, related allowance
102 
155 
102 
155 
155 
Impaired loans, average recorded investment
22,299 
49,233 
23,633 
53,962 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial Real Estate [Member] |
Retail [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
9,827 
9,395 
9,827 
9,395 
9,797 
Impaired loans, recorded investment, total
8,406 
7,908 
8,406 
7,908 
8,117 
Impaired loans, recorded investment with no related allowance
8,406 
5,541 
8,406 
5,541 
8,117 
Impaired loans, recorded investment with related allowance
0 
2,367 
0 
2,367 
0 
Impaired loans, related allowance
0 
905 
0 
905 
0 
Impaired loans, average recorded investment
8,664 
7,051 
8,262 
7,386 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial Real Estate [Member] |
Office [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
9,245 
13,744 
9,245 
13,744 
8,949 
Impaired loans, recorded investment, total
7,828 
10,589 
7,828 
10,589 
6,829 
Impaired loans, recorded investment with no related allowance
7,820 
10,364 
7,820 
10,364 
6,604 
Impaired loans, recorded investment with related allowance
8 
225 
8 
225 
225 
Impaired loans, related allowance
8 
21 
8 
21 
21 
Impaired loans, average recorded investment
10,340 
10,661 
7,329 
11,023 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial Real Estate [Member] |
Multifamily [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
6,447 
3,333 
6,447 
3,333 
3,189 
Impaired loans, recorded investment, total
6,447 
3,219 
6,447 
3,219 
2,706 
Impaired loans, recorded investment with no related allowance
4,415 
3,219 
4,415 
3,219 
2,706 
Impaired loans, recorded investment with related allowance
2,032 
0 
2,032 
0 
0 
Impaired loans, related allowance
196 
0 
196 
0 
0 
Impaired loans, average recorded investment
5,474 
3,317 
4,577 
3,366 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial Real Estate [Member] |
Industrial [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
0 
0 
0 
0 
3,968 
Impaired loans, recorded investment, total
0 
0 
0 
0 
3,968 
Impaired loans, recorded investment with no related allowance
0 
0 
0 
0 
0 
Impaired loans, recorded investment with related allowance
0 
0 
0 
0 
3,968 
Impaired loans, related allowance
0 
0 
0 
0 
2,290 
Impaired loans, average recorded investment
1,099 
0 
1,984 
0 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Commercial Real Estate [Member] |
Other commercial real estate [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
17,196 
14,750 
17,196 
14,750 
15,377 
Impaired loans, recorded investment, total
14,877 
12,448 
14,877 
12,448 
12,875 
Impaired loans, recorded investment with no related allowance
13,113 
11,524 
13,113 
11,524 
10,049 
Impaired loans, recorded investment with related allowance
1,764 
924 
1,764 
924 
2,826 
Impaired loans, related allowance
888 
199 
888 
199 
643 
Impaired loans, average recorded investment
14,060 
13,084 
13,876 
13,967 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Residential Mortgage [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
216,118 
197,919 
216,118 
197,919 
228,149 
Impaired loans, recorded investment, total
197,338 
184,967 
197,338 
184,967 
206,563 
Impaired loans, recorded investment with no related allowance
197,086 
184,350 
197,086 
184,350 
204,264 
Impaired loans, recorded investment with related allowance
252 
617 
252 
617 
2,299 
Impaired loans, related allowance
178 
235 
178 
235 
769 
Impaired loans, average recorded investment
200,870 
202,632 
205,540 
212,208 
 
Impaired loans, interest income recognized
1,913 
2,078 
4,011 
4,154 
 
Residential Mortgage [Member] |
Permanent mortgage [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
42,983 
26,504 
42,983 
26,504 
51,153 
Impaired loans, recorded investment, total
32,747 
18,136 
32,747 
18,136 
39,863 
Impaired loans, recorded investment with no related allowance
32,495 
17,519 
32,495 
17,519 
37,564 
Impaired loans, recorded investment with related allowance
252 
617 
252 
617 
2,299 
Impaired loans, related allowance
178 
235 
178 
235 
769 
Impaired loans, average recorded investment
35,450 
20,479 
36,304 
21,751 
 
Impaired loans, interest income recognized
285 
398 
603 
795 
 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
165,431 
166,824 
165,431 
166,824 
170,740 
Impaired loans, recorded investment, total
156,887 
162,240 
156,887 
162,240 
160,444 
Impaired loans, recorded investment with no related allowance
156,887 
162,240 
156,887 
162,240 
160,444 
Impaired loans, recorded investment with related allowance
0 
0 
0 
0 
0 
Impaired loans, related allowance
0 
0 
0 
0 
0 
Impaired loans, average recorded investment
158,038 
177,537 
162,256 
185,961 
 
Impaired loans, interest income recognized
1,628 
1,680 
3,408 
3,359 
 
Residential Mortgage [Member] |
Home equity [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
7,704 
4,591 
7,704 
4,591 
6,256 
Impaired loans, recorded investment, total
7,704 
4,591 
7,704 
4,591 
6,256 
Impaired loans, recorded investment with no related allowance
7,704 
4,591 
7,704 
4,591 
6,256 
Impaired loans, recorded investment with related allowance
0 
0 
0 
0 
0 
Impaired loans, related allowance
0 
0 
0 
0 
0 
Impaired loans, average recorded investment
7,382 
4,616 
6,980 
4,496 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Consumer [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
2,103 
7,599 
2,103 
7,599 
2,878 
Impaired loans, recorded investment, total
2,037 
7,013 
2,037 
7,013 
2,709 
Impaired loans, recorded investment with no related allowance
1,917 
6,971 
1,917 
6,971 
2,584 
Impaired loans, recorded investment with related allowance
120 
42 
120 
42 
125 
Impaired loans, related allowance
120 
42 
120 
42 
125 
Impaired loans, average recorded investment
2,105 
7,343 
2,373 
5,265 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Consumer [Member] |
Indirect automobile [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
1,188 
2,257 
1,188 
2,257 
1,578 
Impaired loans, recorded investment, total
1,188 
2,257 
1,188 
2,257 
1,578 
Impaired loans, recorded investment with no related allowance
1,188 
2,257 
1,188 
2,257 
1,578 
Impaired loans, recorded investment with related allowance
0 
0 
0 
0 
0 
Impaired loans, related allowance
0 
0 
0 
0 
0 
Impaired loans, average recorded investment
1,254 
2,433 
1,383 
2,226 
 
Impaired loans, interest income recognized
0 
0 
0 
0 
 
Consumer [Member] |
Other consumer [Member]
 
 
 
 
 
Impaired loans [Abstract]
 
 
 
 
 
Impaired loans, unpaid principal balance
915 
5,342 
915 
5,342 
1,300 
Impaired loans, recorded investment, total
849 
4,756 
849 
4,756 
1,131 
Impaired loans, recorded investment with no related allowance
729 
4,714 
729 
4,714 
1,006 
Impaired loans, recorded investment with related allowance
120 
42 
120 
42 
125 
Impaired loans, related allowance
120 
42 
120 
42 
125 
Impaired loans, average recorded investment
851 
4,910 
990 
3,039 
 
Impaired loans, interest income recognized
$ 0 
$ 0 
$ 0 
$ 0 
 
Loans and Allowances for Credit Losses Part 5 (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
$ 109,050 
$ 74,929 
$ 109,050 
$ 74,929 
$ 97,985 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
38,768 
34,340 
38,768 
34,340 
48,126 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
70,282 
40,589 
70,282 
40,589 
49,859 
Troubled Debt Restructuring, Specific allowance
395 
253 
395 
253 
273 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
208 
916 
1,176 
5,257 
 
Accruing [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
48,733 
28,415 
48,733 
28,415 
38,515 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
12,598 
11,347 
12,598 
11,347 
8,755 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
36,135 
17,068 
36,135 
17,068 
29,760 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
32 
0 
112 
 
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
60,317 
46,514 
60,317 
46,514 
59,470 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
26,170 
22,993 
26,170 
22,993 
39,371 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
34,147 
23,521 
34,147 
23,521 
20,099 
Troubled Debt Restructuring, Specific allowance
395 
253 
395 
253 
273 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
208 
884 
1,176 
5,145 
 
Commercial [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
4,993 
5,168 
4,993 
5,168 
5,521 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
1,867 
2,886 
1,867 
2,886 
3,525 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
3,126 
2,282 
3,126 
2,282 
1,996 
Troubled Debt Restructuring, Specific allowance
240 
20 
240 
20 
60 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
0 
0 
 
Commercial [Member] |
Energy [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
0 
0 
0 
0 
0 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
0 
0 
0 
0 
0 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
0 
0 
0 
0 
0 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
0 
0 
 
Commercial [Member] |
Services [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
3,065 
2,700 
3,065 
2,700 
2,492 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
710 
1,381 
710 
1,381 
2,099 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
2,355 
1,319 
2,355 
1,319 
393 
Troubled Debt Restructuring, Specific allowance
228 
0 
228 
0 
45 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
0 
0 
 
Commercial [Member] |
Wholesale/retail [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
1,107 
1,612 
1,107 
1,612 
2,290 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
968 
1,428 
968 
1,428 
1,362 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
139 
184 
139 
184 
928 
Troubled Debt Restructuring, Specific allowance
12 
20 
12 
20 
15 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
0 
0 
 
Commercial [Member] |
Manufacturing [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
0 
0 
0 
0 
0 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
0 
0 
0 
0 
0 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
0 
0 
0 
0 
0 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
0 
0 
 
Commercial [Member] |
Healthcare [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
0 
77 
0 
77 
64 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
0 
77 
0 
77 
64 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
0 
0 
0 
0 
0 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
0 
0 
 
Commercial [Member] |
Integrated food services [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
0 
0 
0 
0 
0 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
0 
0 
0 
0 
0 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
0 
0 
0 
0 
0 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
0 
0 
 
Commercial [Member] |
Other commercial and industrial [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
821 
779 
821 
779 
675 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
189 
0 
189 
0 
0 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
632 
779 
632 
779 
675 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
0 
0 
 
Commercial Real Estate [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
32,639 
30,952 
32,639 
30,952 
30,599 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
8,798 
12,278 
8,798 
12,278 
21,043 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
23,841 
18,674 
23,841 
18,674 
9,556 
Troubled Debt Restructuring, Specific allowance
23 
179 
23 
179 
76 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
131 
769 
758 
5,030 
 
Commercial Real Estate [Member] |
Construction and land development [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
11,734 
18,217 
11,734 
18,217 
14,898 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
1,934 
4,238 
1,934 
4,238 
9,989 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
9,800 
13,979 
9,800 
13,979 
4,909 
Troubled Debt Restructuring, Specific allowance
23 
76 
23 
76 
76 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
54 
769 
54 
2,579 
 
Commercial Real Estate [Member] |
Retail [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
5,681 
3,618 
5,681 
3,618 
6,785 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
1,604 
3,618 
1,604 
3,618 
5,735 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
4,077 
0 
4,077 
0 
1,050 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
627 
0 
 
Commercial Real Estate [Member] |
Office [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
5,488 
3,387 
5,488 
3,387 
3,899 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
1,313 
2,489 
1,313 
2,489 
1,920 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
4,175 
898 
4,175 
898 
1,979 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
77 
0 
77 
269 
 
Commercial Real Estate [Member] |
Multifamily [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
990 
0 
990 
0 
0 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
208 
0 
208 
0 
0 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
782 
0 
782 
0 
0 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
0 
0 
 
Commercial Real Estate [Member] |
Industrial [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
0 
0 
0 
0 
0 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
0 
0 
0 
0 
0 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
0 
0 
0 
0 
0 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
0 
0 
 
Commercial Real Estate [Member] |
Other commercial real estate [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
8,746 
5,730 
8,746 
5,730 
5,017 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
3,739 
1,933 
3,739 
1,933 
3,399 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
5,007 
3,797 
5,007 
3,797 
1,618 
Troubled Debt Restructuring, Specific allowance
0 
103 
0 
103 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
0 
2,182 
 
Residential Mortgage [Member] |
Accruing [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
48,733 
28,415 
48,733 
28,415 
38,515 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
12,598 
11,347 
12,598 
11,347 
8,755 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
36,135 
17,068 
36,135 
17,068 
29,760 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
32 
0 
112 
 
Residential Mortgage [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
21,143 
6,892 
21,143 
6,892 
20,490 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
14,181 
4,327 
14,181 
4,327 
12,214 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
6,962 
2,565 
6,962 
2,565 
8,276 
Troubled Debt Restructuring, Specific allowance
54 
54 
54 
54 
54 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
77 
115 
417 
115 
 
Residential Mortgage [Member] |
Permanent mortgage [Member] |
Accruing [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
0 
3,655 
0 
3,655 
0 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
0 
2,466 
0 
2,466 
0 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
0 
1,189 
0 
1,189 
0 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
32 
0 
112 
 
Residential Mortgage [Member] |
Permanent mortgage [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
17,639 
6,892 
17,639 
6,892 
20,490 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
10,917 
4,327 
10,917 
4,327 
12,214 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
6,722 
2,565 
6,722 
2,565 
8,276 
Troubled Debt Restructuring, Specific allowance
54 
54 
54 
54 
54 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
8 
115 
348 
115 
 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member] |
Accruing [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
48,733 
24,760 
48,733 
24,760 
38,515 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
12,598 
8,881 
12,598 
8,881 
8,755 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
36,135 
15,879 
36,135 
15,879 
29,760 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
0 
0 
 
Residential Mortgage [Member] |
Home equity [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
3,504 
0 
3,504 
0 
0 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
3,264 
0 
3,264 
0 
0 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
240 
0 
240 
0 
0 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
69 
0 
69 
0 
 
Consumer [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
1,542 
3,502 
1,542 
3,502 
2,860 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
1,324 
3,502 
1,324 
3,502 
2,589 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
218 
0 
218 
0 
271 
Troubled Debt Restructuring, Specific allowance
78 
0 
78 
0 
83 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
1 
0 
 
Consumer [Member] |
Indirect automobile [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
986 
0 
986 
0 
532 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
926 
0 
926 
0 
492 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
60 
0 
60 
0 
40 
Troubled Debt Restructuring, Specific allowance
0 
0 
0 
0 
0 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
0 
0 
1 
0 
 
Consumer [Member] |
Other consumer [Member] |
Nonaccrual [Member]
 
 
 
 
 
Financing Receivable, Modifications [Line Items]
 
 
 
 
 
Troubled Debt Restructuring, Recorded Investment
556 
3,502 
556 
3,502 
2,328 
Troubled Debt Restructuring, Performing in Accordance With Modified Terms
398 
3,502 
398 
3,502 
2,097 
Troubled Debt Restructuring, Not Performing in Accordance With Modified Terms
158 
0 
158 
0 
231 
Troubled Debt Restructuring, Specific allowance
78 
0 
78 
0 
83 
Financing Receivables, Impaired, Troubled Debt Restructuring, Charge-offs
$ 0 
$ 0 
$ 0 
$ 0 
 
Loans and Allowances for Credit Losses Part 6 (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
$ 22,457 
$ 2,648 
$ 32,099 
$ 15,357 
Troubled Debt Restructurings, Recorded Balance With Payment Default
41,927 
1,718 
46,872 
7,127 
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
8,896 
1,350 
17,643 
4,287 
Troubled Debt Restructurings, Recorded Balance With Payment Default
22,784 
492 
26,767 
2,096 
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
3,087 
0 
8,694 
0 
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
5,809 
1,350 
8,949 
4,287 
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
13,561 
1,298 
14,456 
11,070 
Troubled Debt Restructurings, Recorded Balance With Payment Default
19,143 
1,226 
20,105 
5,031 
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
1,275 
234 
5,552 
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
9,854 
0 
9,914 
1,636 
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
3,707 
23 
4,308 
3,882 
Commercial [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
1,140 
72 
1,320 
149 
Troubled Debt Restructurings, Recorded Balance With Payment Default
2,007 
0 
2,040 
0 
Commercial [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
1,140 
72 
1,320 
149 
Troubled Debt Restructurings, Recorded Balance With Payment Default
2,007 
0 
2,040 
0 
Commercial [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
72 
147 
72 
Commercial [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
1,140 
0 
1,173 
0 
Commercial [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
77 
Commercial [Member] |
Energy [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Energy [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Energy [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Energy [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Energy [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Energy [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Energy [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Energy [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Services [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
1,140 
72 
1,173 
72 
Troubled Debt Restructurings, Recorded Balance With Payment Default
2,007 
0 
2,007 
0 
Commercial [Member] |
Services [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Services [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Services [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Services [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
1,140 
72 
1,173 
72 
Troubled Debt Restructurings, Recorded Balance With Payment Default
2,007 
0 
2,007 
0 
Commercial [Member] |
Services [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
72 
0 
72 
Commercial [Member] |
Services [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
1,140 
0 
1,173 
0 
Commercial [Member] |
Services [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Wholesale/retail [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Wholesale/retail [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Wholesale/retail [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Wholesale/retail [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Wholesale/retail [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Wholesale/retail [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Wholesale/retail [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Wholesale/retail [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Manufacturing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Manufacturing [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Manufacturing [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Manufacturing [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Manufacturing [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Manufacturing [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Manufacturing [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Manufacturing [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Healthcare [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
77 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Healthcare [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Healthcare [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Healthcare [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Healthcare [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
77 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Healthcare [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Healthcare [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Healthcare [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
77 
Commercial [Member] |
Integrated food services [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Integrated food services [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Integrated food services [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Integrated food services [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Integrated food services [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Integrated food services [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Integrated food services [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Integrated food services [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Other commercial and industrial [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
147 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
33 
0 
Commercial [Member] |
Other commercial and industrial [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial [Member] |
Other commercial and industrial [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Other commercial and industrial [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Other commercial and industrial [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
147 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
33 
0 
Commercial [Member] |
Other commercial and industrial [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
147 
0 
Commercial [Member] |
Other commercial and industrial [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial [Member] |
Other commercial and industrial [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
8,714 
1,203 
8,714 
6,743 
Troubled Debt Restructurings, Recorded Balance With Payment Default
14,862 
1,203 
15,603 
5,008 
Commercial Real Estate [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial Real Estate [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
8,714 
1,203 
8,714 
6,743 
Troubled Debt Restructurings, Recorded Balance With Payment Default
14,862 
1,203 
15,603 
5,008 
Commercial Real Estate [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
1,203 
0 
5,107 
Commercial Real Estate [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
8,714 
0 
8,714 
1,636 
Commercial Real Estate [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Construction and land development [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
1,203 
0 
1,302 
Troubled Debt Restructurings, Recorded Balance With Payment Default
6,889 
1,203 
6,889 
1,203 
Commercial Real Estate [Member] |
Construction and land development [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial Real Estate [Member] |
Construction and land development [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Construction and land development [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Construction and land development [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
1,203 
0 
1,302 
Troubled Debt Restructurings, Recorded Balance With Payment Default
6,889 
1,203 
6,889 
1,203 
Commercial Real Estate [Member] |
Construction and land development [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
1,203 
0 
1,302 
Commercial Real Estate [Member] |
Construction and land development [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Construction and land development [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Retail [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
612 
0 
612 
2,418 
Troubled Debt Restructurings, Recorded Balance With Payment Default
612 
0 
612 
2,418 
Commercial Real Estate [Member] |
Retail [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial Real Estate [Member] |
Retail [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Retail [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Retail [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
612 
0 
612 
2,418 
Troubled Debt Restructurings, Recorded Balance With Payment Default
612 
0 
612 
2,418 
Commercial Real Estate [Member] |
Retail [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
2,418 
Commercial Real Estate [Member] |
Retail [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
612 
0 
612 
0 
Commercial Real Estate [Member] |
Retail [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Office [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
3,181 
0 
3,181 
1,387 
Troubled Debt Restructurings, Recorded Balance With Payment Default
3,181 
0 
3,181 
1,387 
Commercial Real Estate [Member] |
Office [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial Real Estate [Member] |
Office [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Office [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Office [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
3,181 
0 
3,181 
1,387 
Troubled Debt Restructurings, Recorded Balance With Payment Default
3,181 
0 
3,181 
1,387 
Commercial Real Estate [Member] |
Office [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
1,387 
Commercial Real Estate [Member] |
Office [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
3,181 
0 
3,181 
0 
Commercial Real Estate [Member] |
Office [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Multifamily [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
990 
0 
990 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
782 
0 
990 
0 
Commercial Real Estate [Member] |
Multifamily [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial Real Estate [Member] |
Multifamily [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Multifamily [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Multifamily [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
990 
0 
990 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
782 
0 
990 
0 
Commercial Real Estate [Member] |
Multifamily [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Multifamily [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
990 
0 
990 
0 
Commercial Real Estate [Member] |
Multifamily [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Industrial [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial Real Estate [Member] |
Industrial [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial Real Estate [Member] |
Industrial [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Industrial [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Industrial [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial Real Estate [Member] |
Industrial [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Industrial [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Industrial [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Other commercial real estate [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
3,931 
0 
3,931 
1,636 
Troubled Debt Restructurings, Recorded Balance With Payment Default
3,398 
0 
3,931 
0 
Commercial Real Estate [Member] |
Other commercial real estate [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Commercial Real Estate [Member] |
Other commercial real estate [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Other commercial real estate [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Other commercial real estate [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
3,931 
0 
3,931 
1,636 
Troubled Debt Restructurings, Recorded Balance With Payment Default
3,398 
0 
3,931 
0 
Commercial Real Estate [Member] |
Other commercial real estate [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Commercial Real Estate [Member] |
Other commercial real estate [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
3,931 
0 
3,931 
1,636 
Commercial Real Estate [Member] |
Other commercial real estate [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Residential Mortgage [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
11,826 
1,373 
21,155 
5,097 
Troubled Debt Restructurings, Recorded Balance With Payment Default
24,973 
515 
29,107 
2,119 
Residential Mortgage [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
8,896 
1,350 
17,643 
4,287 
Troubled Debt Restructurings, Recorded Balance With Payment Default
22,784 
492 
26,767 
2,096 
Residential Mortgage [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
3,087 
0 
8,694 
0 
Residential Mortgage [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
5,809 
1,350 
8,949 
4,287 
Residential Mortgage [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
2,930 
23 
3,512 
810 
Troubled Debt Restructurings, Recorded Balance With Payment Default
2,189 
23 
2,340 
23 
Residential Mortgage [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Residential Mortgage [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
27 
0 
Residential Mortgage [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
2,930 
23 
3,485 
810 
Residential Mortgage [Member] |
Permanent mortgage [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
1,132 
23 
1,404 
4,946 
Troubled Debt Restructurings, Recorded Balance With Payment Default
1,949 
23 
1,969 
23 
Residential Mortgage [Member] |
Permanent mortgage [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
4,136 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Residential Mortgage [Member] |
Permanent mortgage [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Residential Mortgage [Member] |
Permanent mortgage [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
4,136 
Residential Mortgage [Member] |
Permanent mortgage [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
1,132 
23 
1,404 
810 
Troubled Debt Restructurings, Recorded Balance With Payment Default
1,949 
23 
1,969 
23 
Residential Mortgage [Member] |
Permanent mortgage [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Residential Mortgage [Member] |
Permanent mortgage [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
27 
0 
Residential Mortgage [Member] |
Permanent mortgage [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
1,132 
23 
1,377 
810 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
8,896 
1,350 
17,643 
151 
Troubled Debt Restructurings, Recorded Balance With Payment Default
22,784 
492 
26,767 
2,096 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
8,896 
1,350 
17,643 
151 
Troubled Debt Restructurings, Recorded Balance With Payment Default
22,784 
492 
26,767 
2,096 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
3,087 
0 
8,694 
0 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
5,809 
1,350 
8,949 
151 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Residential Mortgage [Member] |
Home equity [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
1,798 
0 
2,108 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
240 
0 
371 
0 
Residential Mortgage [Member] |
Home equity [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Residential Mortgage [Member] |
Home equity [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Residential Mortgage [Member] |
Home equity [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Residential Mortgage [Member] |
Home equity [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
1,798 
0 
2,108 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
240 
0 
371 
0 
Residential Mortgage [Member] |
Home equity [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Residential Mortgage [Member] |
Home equity [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Residential Mortgage [Member] |
Home equity [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
1,798 
0 
2,108 
0 
Consumer [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
777 
0 
910 
3,368 
Troubled Debt Restructurings, Recorded Balance With Payment Default
85 
0 
122 
0 
Consumer [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Consumer [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Consumer [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Consumer [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
777 
0 
910 
3,368 
Troubled Debt Restructurings, Recorded Balance With Payment Default
85 
0 
122 
0 
Consumer [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
87 
373 
Consumer [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Consumer [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
777 
0 
823 
2,995 
Consumer [Member] |
Indirect automobile [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
719 
0 
725 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
61 
0 
98 
0 
Consumer [Member] |
Indirect automobile [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Consumer [Member] |
Indirect automobile [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Consumer [Member] |
Indirect automobile [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Consumer [Member] |
Indirect automobile [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
719 
0 
725 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
61 
0 
98 
0 
Consumer [Member] |
Indirect automobile [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Consumer [Member] |
Indirect automobile [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Consumer [Member] |
Indirect automobile [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
719 
0 
725 
0 
Consumer [Member] |
Other consumer [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
58 
0 
185 
3,368 
Troubled Debt Restructurings, Recorded Balance With Payment Default
24 
0 
24 
0 
Consumer [Member] |
Other consumer [Member] |
Accruing [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Troubled Debt Restructurings, Recorded Balance With Payment Default
0 
0 
0 
0 
Consumer [Member] |
Other consumer [Member] |
Accruing [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Consumer [Member] |
Other consumer [Member] |
Accruing [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Consumer [Member] |
Other consumer [Member] |
Nonaccrual [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
58 
0 
185 
3,368 
Troubled Debt Restructurings, Recorded Balance With Payment Default
24 
0 
24 
0 
Consumer [Member] |
Other consumer [Member] |
Nonaccrual [Member] |
Interest Rate Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
87 
373 
Consumer [Member] |
Other consumer [Member] |
Nonaccrual [Member] |
Payment Stream Modification [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
0 
0 
0 
0 
Consumer [Member] |
Other consumer [Member] |
Nonaccrual [Member] |
Combination & Other Modifications [Member]
 
 
 
 
Accounts, Notes, Loans and Financing Receivable [Line Items]
 
 
 
 
Troubled Debt Restructurings, Recorded Balance Modified During The Period
$ 58 
$ 0 
$ 98 
$ 2,995 
Loans and Allowances for Credit Losses Part 7 (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
$ 12,160,578 
$ 12,014,834 
$ 11,245,244 
Past due 30 to 89 days
38,805 
37,938 
58,888 
Past due 90 days or more
119,266 
124,274 
127,817 
Nonaccrual
122,133 
134,410 
144,482 
Total
12,440,782 
12,311,456 
11,576,431 
Commercial [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
7,681,836 
7,611,023 
6,987,698 
Past due 30 to 89 days
2,974 
5,994 
13,171 
Past due 90 days or more
2,441 
428 
137 
Nonaccrual
20,869 
24,467 
34,529 
Total
7,708,120 
7,641,912 
7,035,535 
Commercial [Member] |
Energy [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
2,382,377 
2,454,928 
2,263,505 
Past due 30 to 89 days
92 
3,071 
2,260 
Past due 90 days or more
0 
200 
0 
Nonaccrual
2,277 
2,460 
3,087 
Total
2,384,746 
2,460,659 
2,268,852 
Commercial [Member] |
Services [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
2,192,771 
2,150,386 
1,974,465 
Past due 30 to 89 days
1,769 
1,710 
3,705 
Past due 90 days or more
2,265 
0 
37 
Nonaccrual
7,448 
12,090 
10,123 
Total
2,204,253 
2,164,186 
1,988,330 
Commercial [Member] |
Wholesale/retail [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
1,168,686 
1,103,307 
940,975 
Past due 30 to 89 days
0 
5 
1,534 
Past due 90 days or more
157 
50 
0 
Nonaccrual
6,700 
3,077 
4,175 
Total
1,175,543 
1,106,439 
946,684 
Commercial [Member] |
Manufacturing [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
385,257 
346,442 
334,856 
Past due 30 to 89 days
0 
35 
0 
Past due 90 days or more
0 
0 
0 
Nonaccrual
876 
2,007 
12,230 
Total
386,133 
348,484 
347,086 
Commercial [Member] |
Healthcare [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
1,115,187 
1,077,022 
980,750 
Past due 30 to 89 days
953 
1,040 
180 
Past due 90 days or more
0 
178 
100 
Nonaccrual
2,670 
3,166 
3,310 
Total
1,118,810 
1,081,406 
984,340 
Commercial [Member] |
Integrated food services [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
163,551 
190,416 
201,366 
Past due 30 to 89 days
0 
6 
4,903 
Past due 90 days or more
0 
0 
0 
Nonaccrual
0 
684 
0 
Total
163,551 
191,106 
206,269 
Commercial [Member] |
Other commercial and industrial [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
274,007 
288,522 
291,781 
Past due 30 to 89 days
160 
127 
589 
Past due 90 days or more
19 
0 
0 
Nonaccrual
898 
983 
1,604 
Total
275,084 
289,632 
293,974 
Commercial Real Estate [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
2,253,864 
2,159,287 
2,058,102 
Past due 30 to 89 days
4,539 
5,657 
11,414 
Past due 90 days or more
0 
3,429 
0 
Nonaccrual
58,693 
60,626 
80,214 
Total
2,317,096 
2,228,999 
2,149,730 
Commercial Real Estate [Member] |
Construction and land development [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
204,519 
226,962 
245,246 
Past due 30 to 89 days
0 
0 
801 
Past due 90 days or more
0 
0 
0 
Nonaccrual
21,135 
26,131 
46,050 
Total
225,654 
253,093 
292,097 
Commercial Real Estate [Member] |
Retail [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
542,946 
514,252 
492,612 
Past due 30 to 89 days
2,060 
349 
5,626 
Past due 90 days or more
0 
68 
0 
Nonaccrual
8,406 
8,117 
7,908 
Total
553,412 
522,786 
506,146 
Commercial Real Estate [Member] |
Office [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
451,730 
417,866 
384,225 
Past due 30 to 89 days
0 
3,177 
525 
Past due 90 days or more
0 
0 
0 
Nonaccrual
7,828 
6,829 
10,589 
Total
459,558 
427,872 
395,339 
Commercial Real Estate [Member] |
Multifamily [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
492,306 
400,151 
354,455 
Past due 30 to 89 days
1,699 
39 
742 
Past due 90 days or more
0 
0 
0 
Nonaccrual
6,447 
2,706 
3,219 
Total
500,452 
402,896 
358,416 
Commercial Real Estate [Member] |
Industrial [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
253,990 
242,026 
228,333 
Past due 30 to 89 days
0 
0 
392 
Past due 90 days or more
0 
0 
0 
Nonaccrual
0 
3,968 
0 
Total
253,990 
245,994 
228,725 
Commercial Real Estate [Member] |
Other commercial real estate [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
308,373 
358,030 
353,231 
Past due 30 to 89 days
780 
2,092 
3,328 
Past due 90 days or more
0 
3,361 
0 
Nonaccrual
14,877 
12,875 
12,448 
Total
324,030 
376,358 
369,007 
Residential Mortgage [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
1,853,635 
1,854,347 
1,820,679 
Past due 30 to 89 days
28,810 
23,687 
31,814 
Past due 90 days or more
116,806 
120,398 
127,665 
Nonaccrual
40,534 
46,608 
22,727 
Total
2,039,785 
2,045,040 
2,002,885 
Residential Mortgage [Member] |
Permanent mortgage [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
1,054,435 
1,075,687 
1,111,078 
Past due 30 to 89 days
8,689 
8,366 
15,130 
Past due 90 days or more
0 
49 
495 
Nonaccrual
32,747 
39,863 
18,136 
Total
1,095,871 
1,123,965 
1,144,839 
Residential Mortgage [Member] |
Permanent mortgages guaranteed by U.S. government agencies [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
22,328 
26,560 
20,641 
Past due 30 to 89 days
17,670 
13,046 
14,473 
Past due 90 days or more
116,806 
120,349 
127,126 
Nonaccrual
83 
489 
0 
Total
156,887 
160,444 
162,240 
Residential Mortgage [Member] |
Home equity [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
776,872 
752,100 
688,960 
Past due 30 to 89 days
2,451 
2,275 
2,211 
Past due 90 days or more
0 
0 
44 
Nonaccrual
7,704 
6,256 
4,591 
Total
787,027 
760,631 
695,806 
Consumer [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
371,243 
390,177 
378,765 
Past due 30 to 89 days
2,482 
2,600 
2,489 
Past due 90 days or more
19 
19 
15 
Nonaccrual
2,037 
2,709 
7,012 
Total
375,781 
395,505 
388,281 
Consumer [Member] |
Indirect automobile [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
14,827 
31,869 
58,909 
Past due 30 to 89 days
540 
1,273 
1,771 
Past due 90 days or more
0 
15 
1 
Nonaccrual
1,188 
1,578 
2,257 
Total
16,555 
34,735 
62,938 
Consumer [Member] |
Other consumer [Member]
 
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
 
Current
356,416 
358,308 
319,856 
Past due 30 to 89 days
1,942 
1,327 
718 
Past due 90 days or more
19 
4 
14 
Nonaccrual
849 
1,131 
4,755 
Total
$ 359,226 
$ 360,770 
$ 325,343 
Mortgage Banking Activities, Components of Loans Held For Sale (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Schedule of Residential Mortgage Loans Held For Sale [Line Items]
 
 
 
 
 
Components of Residential Mortgages Held For Sale Gross, Fair Value
$ 301,057 
$ 259,174 
$ 301,057 
$ 259,174 
$ 293,762 
Number of days for past due loans (in days)
90 days 
 
90 days 
 
 
Mortgage and Marketing Revenue [Abstract]
 
 
 
 
 
Originating and marketing revenue
26,356 
29,689 
56,266 
52,770 
 
Servicing revenue
10,240 
9,859 
20,306 
19,856 
 
Mortgage banking revenue
36,596 
39,548 
76,572 
72,626 
 
Residential Mortgage Loans Held For Sale Gross [Member]
 
 
 
 
 
Schedule of Residential Mortgage Loans Held For Sale [Line Items]
 
 
 
 
 
Residential Mortgage Loans Held For Sale Unpaid Principal Balance, Gross
284,454 
236,160 
284,454 
236,160 
269,718 
Components of Residential Mortgages Held For Sale Gross, Fair Value
280,962 
247,893 
280,962 
247,893 
281,935 
Number of days for past due loans (in days)
90 days 
90 days 
90 days 
90 days 
90 days 
Residential mortgage loans held for sale, nonperforming
0 
0 
0 
0 
0 
Credit losses recognized on residential mortgage loans held for sale
0 
0 
 
 
 
Mortgage and Marketing Revenue [Abstract]
 
 
 
 
 
Originating and marketing revenue
17,763 
27,706 
47,998 
44,798 
 
Residential Mortgage Loan Commitments [Member]
 
 
 
 
 
Schedule of Residential Mortgage Loans Held For Sale [Line Items]
 
 
 
 
 
Residential Mortgage Derivatives Notional Amount
547,508 
392,247 
547,508 
392,247 
356,634 
Components of Residential Mortgages Held For Sale Gross, Fair Value
(1,709)
15,807 
(1,709)
15,807 
12,733 
Minimum Number of Days Outstanding For Residential Mortgage Commitments
60 days 
60 days 
60 days 
60 days 
60 days 
Maximum Number of Days Outstanding For Residential Mortgage Commitments
90 days 
90 days 
90 days 
90 days 
90 days 
Mortgage and Marketing Revenue [Abstract]
 
 
 
 
 
Originating and marketing revenue
(15,052)
6,900 
(14,442)
9,210 
 
Forward Sales Contracts[Member]
 
 
 
 
 
Schedule of Residential Mortgage Loans Held For Sale [Line Items]
 
 
 
 
 
Residential Mortgage Derivatives Notional Amount
740,752 
605,856 
740,752 
605,856 
598,442 
Components of Residential Mortgages Held For Sale Gross, Fair Value
21,804 
(4,526)
21,804 
(4,526)
(906)
Minimum Number of Days for Delivery of Forward Sales Contracts
60 days 
60 days 
60 days 
60 days 
60 days 
Maximum Number of Days for Delivery of Forward Sales Contracts
90 days 
90 days 
90 days 
90 days 
90 days 
Mortgage and Marketing Revenue [Abstract]
 
 
 
 
 
Originating and marketing revenue
$ 23,645 
$ (4,917)
$ 22,710 
$ (1,238)
 
Mortgage Banking Activities, Mortgage Servicing Rights (Details) (USD $)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Summary of Mortgage Servicing Rights [Abstract]
 
 
 
 
 
Number of residential mortgage loans serviced
101,498 
96,772 
101,498 
96,772 
98,246 
Outstanding principal balance of residential mortgage loans serviced for others
$ 12,741,651,000 
$ 11,564,643,000 
$ 12,741,651,000 
$ 11,564,643,000 
$ 11,981,624,000 
Weighted average interest rate (in hundredths)
 
 
4.47% 
4.99% 
4.71% 
Remaining term (in months)
291 months 
289 months 
291 months 
289 months 
289 months 
Servicing Asset at Fair Value, Amount [Roll Forward]
 
 
 
 
 
Beginning balance
109,840,000 
98,138,000 
100,812,000 
86,783,000 
86,783,000 
Additions, net
14,499,000 
9,275,000 
25,932,000 
17,647,000 
 
Change in fair value due to loan runoff
(5,765,000)
(4,180,000)
(10,828,000)
(8,324,000)
 
Change in fair value due to market changes
14,315,000 
(11,450,000)
16,973,000 
(4,323,000)
 
Ending balance
132,889,000 
91,783,000 
132,889,000 
91,783,000 
100,812,000 
Servicing Assets at Fair Value, Assumptions Used to Estimate Fair Value [Abstract]
 
 
 
 
 
Discount rate - risk-free rate plus a market premium (in hundredths)
 
 
10.25% 
10.33% 
10.29% 
Prepayment rate - estimated based upon loan interest rate, original term and loan type, minimum (in hundredths)
 
 
7.00% 
11.44% 
8.38% 
Prepayment rate - estimated based upon loan interest rate, original term and loan type, maximum (in hundredths)
 
 
32.30% 
53.10% 
43.94% 
Loan servicing costs - annually per loan based upon loan type, performing, minimum (in dollars per loan)
 
 
58 
55 
55 
Loan servicing costs - annually per loan based upon loan type, performing, maximum (in dollars per loan)
 
 
105 
105 
105 
Loan servicing costs - annually per loan based upon loan type, delinquent, minimum (in dollars per loan)
 
 
135 
135 
135 
Loan servicing costs - annually per loan based upon loan type, delinquent, maximum (in dollars per loan)
 
 
500 
500 
500 
Loan servicing costs - annually per loan based upon loan type, foreclosure, minimum (in dollars per loan)
 
 
875 
875 
875 
Loan servicing costs - annually per loan based upon loan type, foreclosure, maximum (in dollars per loan)
 
 
4,250 
3,750 
4,250 
Escrow earnings rate - indexed to rates paid on deposit accounts with comparable average life (in hundredths)
 
 
1.56% 
1.28% 
0.87% 
Purchased [Member]
 
 
 
 
 
Servicing Asset at Fair Value, Amount [Roll Forward]
 
 
 
 
 
Beginning balance
13,203,000 
21,204,000 
12,976,000 
18,903,000 
18,903,000 
Additions, net
0 
0 
0 
0 
 
Change in fair value due to loan runoff
(940,000)
(950,000)
(1,811,000)
(1,960,000)
 
Change in fair value due to market changes
3,319,000 
(3,893,000)
4,417,000 
(582,000)
 
Ending balance
15,582,000 
16,361,000 
15,582,000 
16,361,000 
 
Originated [Member]
 
 
 
 
 
Servicing Asset at Fair Value, Amount [Roll Forward]
 
 
 
 
 
Beginning balance
96,637,000 
76,934,000 
87,836,000 
67,880,000 
67,880,000 
Additions, net
14,499,000 
9,275,000 
25,932,000 
17,647,000 
 
Change in fair value due to loan runoff
(4,825,000)
(3,230,000)
(9,017,000)
(6,364,000)
 
Change in fair value due to market changes
10,996,000 
(7,557,000)
12,556,000 
(3,741,000)
 
Ending balance
$ 117,307,000 
$ 75,422,000 
$ 117,307,000 
$ 75,422,000 
 
Mortgage Banking Activities, Loan Servicing Portfolio (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
 
 
Fair value
$ 132,889 
$ 109,840 
$ 100,812 
$ 91,783 
$ 98,138 
$ 86,783 
Outstanding principal of loans serviced for others
12,741,651 
 
 
 
 
 
Weighted average prepayment rate (in hundredths)
11.31% 
 
 
 
 
 
Increase in Fair Value Of Mortgage Servicing Rights Due To 50 Basis Point Increase In Mortgage Interest Rates
207 
 
 
 
 
 
Decrease in Fair Value Of Mortgage Servicing Rights Due To 50 Basis Point Decrease In Mortgage Interest Rates
586 
 
 
 
 
 
Interest Rate Range Less than 4.00% [Member]
 
 
 
 
 
 
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
 
 
Fair value
57,807 
 
 
 
 
 
Outstanding principal of loans serviced for others
5,075,651 
 
 
 
 
 
Weighted average prepayment rate (in hundredths)
7.00% 
 
 
 
 
 
Interest Rate Range 4.00% to 4.99% [Member]
 
 
 
 
 
 
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
 
 
Fair value
41,673 
 
 
 
 
 
Outstanding principal of loans serviced for others
3,739,420 
 
 
 
 
 
Weighted average prepayment rate (in hundredths)
8.51% 
 
 
 
 
 
Interest Rate Range 5.00% to 5.99% [Member]
 
 
 
 
 
 
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
 
 
Fair value
26,815 
 
 
 
 
 
Outstanding principal of loans serviced for others
2,551,306 
 
 
 
 
 
Weighted average prepayment rate (in hundredths)
12.70% 
 
 
 
 
 
Interest Rate Range Greater than 5.99% [Member]
 
 
 
 
 
 
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
 
 
Fair value
6,594 
 
 
 
 
 
Outstanding principal of loans serviced for others
$ 1,375,274 
 
 
 
 
 
Weighted average prepayment rate (in hundredths)
32.30% 
 
 
 
 
 
Mortgage Banking Activities Mortgage Banking Activities, Loans Serviced for Others (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Financing Receivable, Recorded Investment, Aging [Abstract]
 
Loans Serviced For Others, Current
$ 12,409,493 
Loans Serviced For Others, 30 To 59 Days Past Due
211,961 
Loans Serviced For Others, 60 To 89 Days Past Due
47,529 
Loans Serviced For Others, Greater Than 90 Days or More Past Due
72,668 
Loans Serviced For Others
12,741,651 
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]
 
Financing Receivable, Recorded Investment, Aging [Abstract]
 
Loans Serviced For Others, Current
4,496,062 
Loans Serviced For Others, 30 To 59 Days Past Due
41,399 
Loans Serviced For Others, 60 To 89 Days Past Due
9,992 
Loans Serviced For Others, Greater Than 90 Days or More Past Due
36,381 
Loans Serviced For Others
4,583,834 
Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]
 
Financing Receivable, Recorded Investment, Aging [Abstract]
 
Loans Serviced For Others, Current
3,409,245 
Loans Serviced For Others, 30 To 59 Days Past Due
24,891 
Loans Serviced For Others, 60 To 89 Days Past Due
5,136 
Loans Serviced For Others, Greater Than 90 Days or More Past Due
16,941 
Loans Serviced For Others
3,456,213 
Government National Mortgage Association Certificates and Obligations (GNMA) [Member]
 
Financing Receivable, Recorded Investment, Aging [Abstract]
 
Loans Serviced For Others, Current
4,245,789 
Loans Serviced For Others, 30 To 59 Days Past Due
143,568 
Loans Serviced For Others, 60 To 89 Days Past Due
31,781 
Loans Serviced For Others, Greater Than 90 Days or More Past Due
13,973 
Loans Serviced For Others
4,435,111 
Other Investor Loans [Member]
 
Financing Receivable, Recorded Investment, Aging [Abstract]
 
Loans Serviced For Others, Current
258,397 
Loans Serviced For Others, 30 To 59 Days Past Due
2,103 
Loans Serviced For Others, 60 To 89 Days Past Due
620 
Loans Serviced For Others, Greater Than 90 Days or More Past Due
5,373 
Loans Serviced For Others
$ 266,493 
Mortgage Banking Activities, Loans Sold With Recourse (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Residential Mortgage Loans Sold With Recourse [Abstract]
 
 
 
 
 
Carrying amount of residential mortgage loans sold and subject to recourse
$ 212,000,000 
$ 241,000,000 
$ 212,000,000 
$ 241,000,000 
$ 227,000,000 
Percentage of loans sold with recourse and either more than 90 days past due or in bankruptcy or foreclosure (in hundredths)
6.00% 
 
6.00% 
 
 
Principal balance of loans sold with recourse and either 90 days or more past due or in bankruptcy or foreclosure
12,000,000 
 
12,000,000 
 
 
Percentage of loans sold with recourse and 30 to 89 days past due (in hundredths)
6.00% 
 
6.00% 
 
 
Principal balance of loans sold with recourse and 30 to 89 days past due
13,000,000 
 
13,000,000 
 
 
Activity in the allowance for losses on loans sold with recourse [Roll forward]
 
 
 
 
 
Beginning balance
10,075,000 
18,651,000 
11,359,000 
18,683,000 
 
Provision for recourse losses
430,000 
768,000 
(331,000)
2,440,000 
 
Loans charged off, net
(840,000)
(1,587,000)
(1,363,000)
(3,291,000)
 
Ending balance
9,665,000 
17,832,000 
9,665,000 
17,832,000 
 
Residenital Mortgage Loans Subject to Repurchase Under Standard Representations and Warranties [Abstract]
 
 
 
 
 
Number of mortgages purchased under repurchase agreement with government sponsored entities.
4 
 
 
 
 
Purchase price of loans purchased under repurchase agreement with government sponsored entities
575,000 
 
 
 
 
Losses incurred on actual repurchased loans from governmental sponsored entities with warranties
68,000 
 
 
 
 
Number of loans sold under standard representations and warranties indemnified
0 
 
 
 
 
Number of loans with unresolved deficiency requests
464 
 
464 
 
389 
Principal balance of loans with unresolved deficiency requests
55,517,000 
 
55,517,000 
 
44,831,000 
Unpaid principal balance of mortgage loans subject to indemnification under standard representations and warranties
1,774,000 
 
1,774,000 
 
1,233,000 
Accrual for credit losses for loan repurchase under representations and warranties
$ 6,181,000 
 
$ 6,181,000 
 
$ 5,291,000 
Employee Benefits (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Compensation And Retirment Disclosure [Abstract]
 
 
 
 
Periodic pension cost recognized in period
$ 500,000 
$ 965,000 
$ 1,000,000 
$ 1,900,000 
Pension contribution for current period
0 
0 
0 
0 
Pension Contributions, Maximum Allowable
23,000,000 
 
23,000,000 
 
Pension Contributions Minimum Required
$ 0 
 
$ 0 
 
Commitments and Contingent Liabilities (Details) (USD $)
Jun. 30, 2013
Parent Company [Member] |
Visa Membership [Member]
 
Loss Contingencies [Line Items]
 
Number of Visa Class B Shares Owned by Entity (in shares)
251,837 
Amount Deposited by Visa in Escrow for Covered Litigation
$ 150,000,000 
Current Exchange Rate For Class A shares For Each Class B Share
0.4206 
Cavanal Hill Funds [Member]
 
Loss Contingencies [Line Items]
 
Mutual Fund Investment in US Treasury Securities
860,000,000 
Mutual Fund Investment in Cash Management
1,000,000,000 
Mutual Fund Investment in Tax-Free Money Market Funds
300,000,000 
The Net Asset Value of Units in Mutual Funds (per unit)
1.00 
BOKF Equity, LLC [Member]
 
Loss Contingencies [Line Items]
 
Number of Private Equity Funds of which the Entity is a General Partner
2 
Contingent Obligations For Additional Investments in Private Equity Funds
$ 7,000,000 
Commitments and Contingent Liabilities Variable Interest Entities (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Loans VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
$ 10,000 
$ 10,000 
$ 10,000 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
26,851 
22,354 
13,626 
Other Assets VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
50,568 
51,086 
52,747 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
95,698 
87,222 
80,596 
Other Liabilities VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
39,639 
44,854 
41,453 
Other Borrowings VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
10,964 
10,964 
10,964 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Non Controlling Interest VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
35,245 
35,821 
36,787 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Private Equity Funds Variable Interest Entities [Member] |
Loans VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Private Equity Funds Variable Interest Entities [Member] |
Other Assets VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
28,379 
28,169 
31,492 
Private Equity Funds Variable Interest Entities [Member] |
Other Liabilities VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Private Equity Funds Variable Interest Entities [Member] |
Other Borrowings VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Private Equity Funds Variable Interest Entities [Member] |
Non Controlling Interest VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
23,418 
23,691 
26,648 
Tax Credit Variable Interest Entities [Member] |
Loans VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
10,000 
10,000 
10,000 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
26,851 
22,354 
13,626 
Tax Credit Variable Interest Entities [Member] |
Other Assets VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
13,706 
13,965 
14,224 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
86,327 
78,109 
71,298 
Tax Credit Variable Interest Entities [Member] |
Other Liabilities VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
37,864 
43,052 
39,510 
Tax Credit Variable Interest Entities [Member] |
Other Borrowings VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
10,964 
10,964 
10,964 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Tax Credit Variable Interest Entities [Member] |
Non Controlling Interest VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
10,000 
10,000 
10,000 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Other Variable Interest Entities [Member] |
Loans VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Other Variable Interest Entities [Member] |
Other Assets VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
8,483 
8,952 
7,031 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
9,371 
9,113 
9,298 
Other Variable Interest Entities [Member] |
Other Liabilities VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
1,775 
1,802 
1,943 
Other Variable Interest Entities [Member] |
Other Borrowings VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
0 
0 
0 
Other Variable Interest Entities [Member] |
Non Controlling Interest VIE [Member]
 
 
 
Variable Interest Entity [Line Items]
 
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net
1,827 
2,130 
139 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net
$ 0 
$ 0 
$ 0 
Commitments and Contingent Liabilities Guarantor Obligations (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Guarantor Obligations [Line Items]
 
Purchase price of tax credits
$ 13 
Property Lease Guarantee [Member]
 
Guarantor Obligations [Line Items]
 
Total amount of guaranteed rents
28.7 
Contingent Obligation For Guaranteed Rents
12.8 
Guaranteed Percentage To Be Received (in hundredths)
80.00% 
Maximum Amount To Be Received Under Rent Agreement With City Of Tulsa
$ 4.5 
Shareholders' Equity (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 6 Months Ended 1 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Accumulated Net Unrealized Gain (Loss) on Available for Sale Securities [Member]
Jun. 30, 2012
Accumulated Net Unrealized Gain (Loss) on Available for Sale Securities [Member]
Jun. 30, 2013
Accumulated Unrealized Gain on Investment Securities Transferred from AFS [Member]
Jun. 30, 2012
Accumulated Unrealized Gain on Investment Securities Transferred from AFS [Member]
Jun. 30, 2013
Accumulated Unrealized Gain (Loss) on Employee Benefit Plans [Member]
Jun. 30, 2012
Accumulated Unrealized Gain (Loss) on Employee Benefit Plans [Member]
Jun. 30, 2013
Accumulated Loss on Effective Cash Flow Hedges [Member]
Jun. 30, 2012
Accumulated Loss on Effective Cash Flow Hedges [Member]
Apr. 30, 2013
Dividend Declared [Member]
Dividends declared (in dollars per share)
$ 0.38 
$ 0.38 
$ 0.76 
$ 0.71 
 
 
 
 
 
 
 
 
$ 0.38 
Schedule of Accumulated Other Income (Loss) [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
Balance, Beginning of Period
 
 
$ 149,920 
$ 128,979 
$ 155,553 
$ 135,740 
$ 3,078 
$ 6,673 
$ (8,296)
$ (12,742)
$ (415)
$ (692)
 
Net change in unrealized gain (loss)
(183,186)
(15,401)
(204,545)
40,034 
(204,545)
40,325 
0 
0 
0 
(291)
0 
0 
 
Reclassification Adjustments Included in Earnings [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
Interest revenue, Investment securities, Taxable securities
(873)
(1,633)
(2,021)
(3,421)
0 
0 
(2,021)
(3,421)
0 
0 
0 
0 
 
Interest Expense, Subordinated debentures
72 
279 
124 
331 
0 
0 
0 
0 
0 
0 
124 
331 
 
Net impairment losses recognized in earnings
552 
858 
799 
4,580 
799 
4,580 
0 
0 
0 
0 
0 
0 
 
Gain on available for sale securities, net
(3,753)
(20,481)
(8,608)
(24,812)
(8,608)
(24,812)
0 
0 
0 
0 
0 
0 
 
Other comprehensive income (loss), before income taxes
(187,188)
(36,378)
(214,251)
16,712 
(212,354)
20,093 
(2,021)
(3,421)
0 
(291)
124 
331 
 
Income tax benefit (expense)
72,819 
14,150 
83,345 1
(6,501)1
82,605 1
(7,816)1
788 1
1,331 1
0 1
113 1
(48)1
(129)1
 
Other comprehensive income (loss), net of income taxes
(114,369)
(22,228)
(130,906)
10,211 
(129,749)
12,277 
(1,233)
(2,090)
0 
(178)
76 
202 
 
Balance, End of Period
$ 19,014 
$ 139,190 
$ 19,014 
$ 139,190 
$ 25,804 
$ 148,017 
$ 1,845 
$ 4,583 
$ (8,296)
$ (12,920)
$ (339)
$ (490)
 
Earnings Per Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Numerator: [Abstract]:
 
 
 
 
Net income attributable to BOK Financial Corporation shareholders
$ 79,931 
$ 97,628 
$ 167,895 
$ 181,243 
Earnings allocated to participating securities
854 
977 
1,825 
1,716 
Numerator for basic earnings per share - income available to common shareholders
79,077 
96,651 
166,070 
179,527 
Effect of reallocating undistributed earnings of participating securities
2 
3 
4 
5 
Numerator for diluted earnings per share - income available to common shareholders
$ 79,079 
$ 96,654 
$ 166,074 
$ 179,532 
Denominator: [Abstract]
 
 
 
 
Weighted average shares outstanding (in shares)
68,719,694 
68,152,242 
68,645,247 
68,214,648 
Less: Participating securities included in weighted average shares (in shares)
725,872 
679,577 
740,648 
641,368 
Denominator for basic earnings per common share (in shares)
67,993,822 
67,472,665 
67,904,599 
67,573,280 
Dilutive effect of employee stock compensation plans (in shares)
218,675 
272,163 
222,152 
274,379 
Denominator for diluted earnings per common share (in shares)
68,212,497 
67,744,828 
68,126,751 
67,847,659 
Basic earnings per share (per share)
$ 1.16 
$ 1.43 
$ 2.45 
$ 2.66 
Diluted earnings per share (per share)
$ 1.16 
$ 1.43 
$ 2.44 
$ 2.65 
Excludes employee stock options with exercise prices greater than current market price.
0 
366,407 
0 
361,558 
Reportable Segments (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Segment Reporting Information [Line Items]
 
 
 
 
Net interest revenue from external sources
$ 167,156 
$ 181,361 
$ 337,561 
$ 354,930 
Net interest revenue (expense) from internal sources
0 
0 
0 
0 
Net interest revenue
167,156 
181,361 
337,561 
354,930 
Provision for credit losses
0 
(8,000)
(8,000)
(8,000)
Net interest revenue after provision for credit losses
167,156 
189,361 
345,561 
362,930 
Other operating revenue
150,761 
186,260 
309,835 
323,541 
Operating expense
196,606 
223,011 
397,930 
405,148 
Net income before taxes
121,311 
152,610 
257,466 
281,323 
Federal and state income taxes
41,423 
53,149 
88,519 
98,669 
Net income
79,888 
99,461 
168,947 
182,654 
Net income attributable to non-controlling interest
(43)
1,833 
1,052 
1,411 
Net income attributable to BOK Financial Corporation shareholders
79,931 
97,628 
167,895 
181,243 
Average assets
27,659,324 
25,538,517 
27,586,781 
25,527,550 
Average invested capital
3,027,654 
2,868,733 
3,012,828 
2,851,983 
Performance measurements: [Abstract]
 
 
 
 
Return on average assets
1.16% 
1.54% 
1.23% 
1.43% 
Return on average invested capital
10.59% 
13.69% 
11.24% 
12.78% 
Efficiency ratio
63.11% 
61.98% 
62.07% 
60.42% 
Commercial [Member]
 
 
 
 
Segment Reporting Information [Line Items]
 
 
 
 
Net interest revenue from external sources
90,505 
93,549 
181,349 
183,041 
Net interest revenue (expense) from internal sources
(9,375)
(11,439)
(18,502)
(23,488)
Net interest revenue
81,130 
82,110 
162,847 
159,553 
Provision for credit losses
86 
748 
1,107 
7,140 
Net interest revenue after provision for credit losses
81,044 
81,362 
161,740 
152,413 
Other operating revenue
43,411 
52,158 
84,843 
90,950 
Operating expense
59,746 
62,625 
118,826 
118,485 
Net income before taxes
64,709 
70,895 
127,757 
124,878 
Federal and state income taxes
25,172 
27,578 
49,697 
48,578 
Net income
39,537 
43,317 
78,060 
76,300 
Net income attributable to non-controlling interest
 
 
0 
0 
Net income attributable to BOK Financial Corporation shareholders
39,537 
43,317 
78,060 
76,300 
Average assets
10,359,660 
9,865,389 
10,486,541 
9,939,627 
Average invested capital
899,088 
862,816 
895,749 
883,408 
Performance measurements: [Abstract]
 
 
 
 
Return on average assets
1.53% 
1.77% 
1.50% 
1.54% 
Return on average invested capital
17.64% 
20.19% 
17.57% 
17.37% 
Efficiency ratio
48.00% 
52.23% 
47.99% 
50.19% 
Consumer [Member]
 
 
 
 
Segment Reporting Information [Line Items]
 
 
 
 
Net interest revenue from external sources
24,830 
25,723 
48,925 
52,310 
Net interest revenue (expense) from internal sources
5,167 
4,803 
10,650 
9,683 
Net interest revenue
29,997 
30,526 
59,575 
61,993 
Provision for credit losses
1,402 
4,221 
2,332 
5,653 
Net interest revenue after provision for credit losses
28,595 
26,305 
57,243 
56,340 
Other operating revenue
47,993 
74,520 
105,135 
124,760 
Operating expense
43,320 
75,602 
95,690 
122,913 
Net income before taxes
33,268 
25,223 
66,688 
58,187 
Federal and state income taxes
12,941 
9,812 
25,942 
22,635 
Net income
20,327 
15,411 
40,746 
35,552 
Net income attributable to non-controlling interest
 
 
0 
0 
Net income attributable to BOK Financial Corporation shareholders
20,327 
15,411 
40,746 
35,552 
Average assets
5,695,098 
5,660,601 
5,709,448 
5,722,627 
Average invested capital
297,675 
289,443 
297,376 
286,420 
Performance measurements: [Abstract]
 
 
 
 
Return on average assets
1.43% 
1.09% 
1.44% 
1.25% 
Return on average invested capital
27.39% 
21.41% 
27.63% 
24.96% 
Efficiency ratio
63.10% 
67.66% 
61.19% 
65.08% 
Wealth Management [Member]
 
 
 
 
Segment Reporting Information [Line Items]
 
 
 
 
Net interest revenue from external sources
6,557 
7,137 
13,073 
14,277 
Net interest revenue (expense) from internal sources
5,093 
5,194 
10,371 
10,051 
Net interest revenue
11,650 
12,331 
23,444 
24,328 
Provision for credit losses
931 
521 
1,449 
1,171 
Net interest revenue after provision for credit losses
10,719 
11,810 
21,995 
23,157 
Other operating revenue
55,164 
51,556 
107,767 
97,949 
Operating expense
61,692 
53,264 
118,701 
104,589 
Net income before taxes
4,191 
10,102 
11,061 
16,517 
Federal and state income taxes
1,630 
3,930 
4,303 
6,425 
Net income
2,561 
6,172 
6,758 
10,092 
Net income attributable to non-controlling interest
 
 
0 
0 
Net income attributable to BOK Financial Corporation shareholders
2,561 
6,172 
6,758 
10,092 
Average assets
4,543,947 
4,166,137 
4,615,054 
4,167,268 
Average invested capital
206,216 
176,703 
204,158 
175,376 
Performance measurements: [Abstract]
 
 
 
 
Return on average assets
0.23% 
0.59% 
0.29% 
0.49% 
Return on average invested capital
4.99% 
14.01% 
6.66% 
11.60% 
Efficiency ratio
92.43% 
83.80% 
90.87% 
85.73% 
Funds Management and Other [Member]
 
 
 
 
Segment Reporting Information [Line Items]
 
 
 
 
Net interest revenue from external sources
45,264 
54,952 
94,214 
105,302 
Net interest revenue (expense) from internal sources
(885)
1,442 
(2,519)
3,754 
Net interest revenue
44,379 
56,394 
91,695 
109,056 
Provision for credit losses
(2,419)
(13,490)
(12,888)
(21,964)
Net interest revenue after provision for credit losses
46,798 
69,884 
104,583 
131,020 
Other operating revenue
4,193 
8,026 
12,090 
9,882 
Operating expense
31,848 
31,520 
64,713 
59,161 
Net income before taxes
19,143 
46,390 
51,960 
81,741 
Federal and state income taxes
1,680 
11,829 
8,577 
21,031 
Net income
17,463 
34,561 
43,383 
60,710 
Net income attributable to non-controlling interest
(43)
1,833 
1,052 
1,411 
Net income attributable to BOK Financial Corporation shareholders
17,506 
32,728 
42,331 
59,299 
Average assets
7,060,619 
5,846,390 
6,775,738 
5,698,028 
Average invested capital
$ 1,624,675 
$ 1,539,771 
$ 1,615,545 
$ 1,506,779 
Fair Value Measurements, Fair Value Of Financial Instruments as Measured On a Recurring Basis (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Fair Value Option Securities [Abstract]
 
 
 
 
 
 
Mortgage servicing rights, Fair Value Disclosure
$ 132,889 
$ 109,840 
$ 100,812 
$ 91,783 
$ 98,138 
$ 86,783 
Derviative contracts, net of cash margin, assets, Fair Value Disclosure
546,206 
 
338,106 
366,204 
 
 
Liabilities [Abstract]
 
 
 
 
 
 
Derivative contracts net of cash margin, liabilities, Fair Value DIsclosure
521,991 
 
283,589 
370,053 
 
 
Fair Value, Measurements, Recurring [Member]
 
 
 
 
 
 
Trading Securities [Abstract]
 
 
 
 
 
 
U.S. Government Agency Debentures, Trading Securities, Fair Value Disclosure
60,713 
 
16,545 
53,514 
 
 
U.S. Agency Residential Mortgage-backed Securities, Trading Securities, Fair Value Disclosure
43,858 
 
86,361 
46,502 
 
 
Municipal And Other-tax Exempt Securities, Trading Securities, Fair Value Disclosure
53,819 
 
90,326 
44,632 
 
 
Other Trading Securities, Trading Securities, Fair Value Disclosure
32,201 
 
20,870 
4,669 
 
 
Trading Securities, Fair Value Disclosure
190,591 
 
214,102 
149,317 
 
 
Available for sale securities [Abstract]
 
 
 
 
 
 
U.S. Treasury Securities, Available for Sale Securities, Fair Value DIsclosure
1,060 
 
1,002 
1,003 
 
 
Municipal and Other Tax-exempt Securities, Available for Sale Securities, Fair Value Disclosure
95,103 
 
87,142 
88,458 
 
 
U.S. Agency Residential Mortgage-backed Securities. Available for Sale Securities, Fair Value Disclosure
8,372,795 
 
9,889,821 
9,903,532 
 
 
Privately Issued Residential Mortgage-backed Securities, Available for Sale Securities, Fair Value Disclosure
297,175 
 
325,163 
317,761 
 
 
Commercial Mortgage-backed Securities, Available for Sale Securities, Fair Value Disclosure
1,846,943 
 
895,075 
 
 
 
Other Debt Securities, Available for Sale Securities, Fair Value Disclosure
35,894 
 
36,389 
36,286 
 
 
Perpetual Preferred Stock, Available for Sale Securities, Fair Value Disclosure
25,583 
 
25,072 
23,431 
 
 
Equity Securities and Mutual Funds, Available for Sale Securities, Fair Value Disclosure
23,521 
 
27,557 
24,944 
 
 
Available for Sale Securities, Fair Value Disclosure
10,698,074 
 
11,287,221 
10,395,415 
 
 
Fair Value Option Securities [Abstract]
 
 
 
 
 
 
U.S. Agency Residential Mortgage-backed Securities, Fair Value Option Securities, Fair Value Disclosure
203,816 
 
257,040 
299,467 
 
 
Corporate Debt Securities, Fair Value Option Securities, Fair Value Disclosure
 
 
26,486 
25,710 
 
 
Other Securities, Fair Value Option Securities, Fair Value Disclosure
1,940 
 
770 
 
 
 
Fair Value Option Securities, Fair Value Disclosure
205,756 
 
284,296 
325,177 
 
 
Residential mortgage loans held for sale, Fair Value Disclosure
301,057 
 
293,762 
259,174 
 
 
Mortgage servicing rights, Fair Value Disclosure
132,889 1
 
100,812 1
91,783 1
 
 
Derviative contracts, net of cash margin, assets, Fair Value Disclosure
546,206 2
 
338,106 2
366,204 2
 
 
Other assets - private equity funds, Fair Value Disclosure
28,379 
 
28,169 
31,492 
 
 
Liabilities [Abstract]
 
 
 
 
 
 
Derivative contracts net of cash margin, liabilities, Fair Value DIsclosure
521,991 2
 
283,589 2
370,053 2
 
 
Fair Value, Measurements, Recurring [Member] |
Fair Value, Inputs, Level 1 [Member]
 
 
 
 
 
 
Trading Securities [Abstract]
 
 
 
 
 
 
U.S. Government Agency Debentures, Trading Securities, Fair Value Disclosure
0 
 
0 
992 
 
 
U.S. Agency Residential Mortgage-backed Securities, Trading Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Municipal And Other-tax Exempt Securities, Trading Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Other Trading Securities, Trading Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Trading Securities, Fair Value Disclosure
0 
 
0 
992 
 
 
Available for sale securities [Abstract]
 
 
 
 
 
 
U.S. Treasury Securities, Available for Sale Securities, Fair Value DIsclosure
1,060 
 
1,002 
1,003 
 
 
Municipal and Other Tax-exempt Securities, Available for Sale Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
U.S. Agency Residential Mortgage-backed Securities. Available for Sale Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Privately Issued Residential Mortgage-backed Securities, Available for Sale Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Commercial Mortgage-backed Securities, Available for Sale Securities, Fair Value Disclosure
0 
 
0 
 
 
 
Other Debt Securities, Available for Sale Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Perpetual Preferred Stock, Available for Sale Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Equity Securities and Mutual Funds, Available for Sale Securities, Fair Value Disclosure
5,119 
 
4,165 
6,912 
 
 
Available for Sale Securities, Fair Value Disclosure
6,179 
 
5,167 
7,915 
 
 
Fair Value Option Securities [Abstract]
 
 
 
 
 
 
U.S. Agency Residential Mortgage-backed Securities, Fair Value Option Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Corporate Debt Securities, Fair Value Option Securities, Fair Value Disclosure
 
 
0 
0 
 
 
Other Securities, Fair Value Option Securities, Fair Value Disclosure
0 
 
0 
 
 
 
Fair Value Option Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Residential mortgage loans held for sale, Fair Value Disclosure
0 
 
0 
0 
 
 
Mortgage servicing rights, Fair Value Disclosure
0 1
 
0 1
0 1
 
 
Derviative contracts, net of cash margin, assets, Fair Value Disclosure
17,588 2
 
11,597 2
802 2
 
 
Other assets - private equity funds, Fair Value Disclosure
0 
 
0 
0 
 
 
Liabilities [Abstract]
 
 
 
 
 
 
Derivative contracts net of cash margin, liabilities, Fair Value DIsclosure
0 2
 
0 2
251 2
 
 
Fair Value, Measurements, Recurring [Member] |
Fair Value, Inputs, Level 2 [Member]
 
 
 
 
 
 
Trading Securities [Abstract]
 
 
 
 
 
 
U.S. Government Agency Debentures, Trading Securities, Fair Value Disclosure
60,713 
 
16,545 
52,522 
 
 
U.S. Agency Residential Mortgage-backed Securities, Trading Securities, Fair Value Disclosure
43,858 
 
86,361 
46,502 
 
 
Municipal And Other-tax Exempt Securities, Trading Securities, Fair Value Disclosure
53,819 
 
90,326 
44,632 
 
 
Other Trading Securities, Trading Securities, Fair Value Disclosure
32,201 
 
20,870 
4,545 
 
 
Trading Securities, Fair Value Disclosure
190,591 
 
214,102 
148,201 
 
 
Available for sale securities [Abstract]
 
 
 
 
 
 
U.S. Treasury Securities, Available for Sale Securities, Fair Value DIsclosure
0 
 
0 
0 
 
 
Municipal and Other Tax-exempt Securities, Available for Sale Securities, Fair Value Disclosure
56,256 
 
46,440 
46,796 
 
 
U.S. Agency Residential Mortgage-backed Securities. Available for Sale Securities, Fair Value Disclosure
8,372,795 
 
9,889,821 
9,903,532 
 
 
Privately Issued Residential Mortgage-backed Securities, Available for Sale Securities, Fair Value Disclosure
297,175 
 
325,163 
317,761 
 
 
Commercial Mortgage-backed Securities, Available for Sale Securities, Fair Value Disclosure
1,846,943 
 
895,075 
 
 
 
Other Debt Securities, Available for Sale Securities, Fair Value Disclosure
30,701 
 
30,990 
30,898 
 
 
Perpetual Preferred Stock, Available for Sale Securities, Fair Value Disclosure
25,583 
 
25,072 
23,431 
 
 
Equity Securities and Mutual Funds, Available for Sale Securities, Fair Value Disclosure
16,155 
 
21,231 
18,032 
 
 
Available for Sale Securities, Fair Value Disclosure
10,645,608 
 
11,233,792 
10,340,450 
 
 
Fair Value Option Securities [Abstract]
 
 
 
 
 
 
U.S. Agency Residential Mortgage-backed Securities, Fair Value Option Securities, Fair Value Disclosure
203,816 
 
257,040 
299,467 
 
 
Corporate Debt Securities, Fair Value Option Securities, Fair Value Disclosure
 
 
26,486 
25,710 
 
 
Other Securities, Fair Value Option Securities, Fair Value Disclosure
1,940 
 
770 
 
 
 
Fair Value Option Securities, Fair Value Disclosure
205,756 
 
284,296 
325,177 
 
 
Residential mortgage loans held for sale, Fair Value Disclosure
301,057 
 
293,762 
259,174 
 
 
Mortgage servicing rights, Fair Value Disclosure
0 1
 
0 1
0 1
 
 
Derviative contracts, net of cash margin, assets, Fair Value Disclosure
528,618 2
 
326,509 2
365,402 2
 
 
Other assets - private equity funds, Fair Value Disclosure
0 
 
0 
0 
 
 
Liabilities [Abstract]
 
 
 
 
 
 
Derivative contracts net of cash margin, liabilities, Fair Value DIsclosure
521,991 2
 
283,589 2
369,802 2
 
 
Fair Value, Measurements, Recurring [Member] |
Fair Value, Inputs, Level 3 [Member]
 
 
 
 
 
 
Trading Securities [Abstract]
 
 
 
 
 
 
U.S. Government Agency Debentures, Trading Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
U.S. Agency Residential Mortgage-backed Securities, Trading Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Municipal And Other-tax Exempt Securities, Trading Securities, Fair Value Disclosure
0 
 
0 
1,852 
 
 
Other Trading Securities, Trading Securities, Fair Value Disclosure
0 
 
0 
124 
 
 
Trading Securities, Fair Value Disclosure
0 
 
0 
1,976 
 
 
Available for sale securities [Abstract]
 
 
 
 
 
 
U.S. Treasury Securities, Available for Sale Securities, Fair Value DIsclosure
0 
 
0 
0 
 
 
Municipal and Other Tax-exempt Securities, Available for Sale Securities, Fair Value Disclosure
38,847 
 
40,702 
41,662 
 
 
U.S. Agency Residential Mortgage-backed Securities. Available for Sale Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Privately Issued Residential Mortgage-backed Securities, Available for Sale Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Commercial Mortgage-backed Securities, Available for Sale Securities, Fair Value Disclosure
0 
 
0 
 
 
 
Other Debt Securities, Available for Sale Securities, Fair Value Disclosure
5,193 
 
5,399 
5,388 
 
 
Perpetual Preferred Stock, Available for Sale Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Equity Securities and Mutual Funds, Available for Sale Securities, Fair Value Disclosure
2,247 
 
2,161 
0 
 
 
Available for Sale Securities, Fair Value Disclosure
46,287 
 
48,262 
47,050 
 
 
Fair Value Option Securities [Abstract]
 
 
 
 
 
 
U.S. Agency Residential Mortgage-backed Securities, Fair Value Option Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Corporate Debt Securities, Fair Value Option Securities, Fair Value Disclosure
 
 
0 
0 
 
 
Other Securities, Fair Value Option Securities, Fair Value Disclosure
0 
 
0 
 
 
 
Fair Value Option Securities, Fair Value Disclosure
0 
 
0 
0 
 
 
Residential mortgage loans held for sale, Fair Value Disclosure
0 
 
0 
0 
 
 
Mortgage servicing rights, Fair Value Disclosure
132,889 1
 
100,812 1
91,783 1
 
 
Derviative contracts, net of cash margin, assets, Fair Value Disclosure
0 2
 
0 2
0 2
 
 
Other assets - private equity funds, Fair Value Disclosure
28,379 
 
28,169 
31,492 
 
 
Liabilities [Abstract]
 
 
 
 
 
 
Derivative contracts net of cash margin, liabilities, Fair Value DIsclosure
$ 0 2
 
$ 0 2
$ 0 2
 
 
Fair Value Measurements, Measured On Recurring Basis Significant Unobservable Inputs (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Available-for-sale Securities [Member] |
Municipal and other tax-exempt securities [Member]
 
 
 
 
Fair Value Assets Measured on Recurring Basis Unobservable Reconciliation [Roll Forward]
 
 
 
 
Balance at beginning of period
$ 39,007 
$ 41,977 
$ 40,702 
$ 42,353 
Purchases and capital calls
0 
0 
0 
0 
Redemptions and distributions
0 
(363)
(98)
(463)
Gain (loss) recognized in earnings [Abstract]
 
 
 
 
Gain on other assets, net
0 
0 
0 
0 
Gain on available for sale securities net
0 
0 
0 
1 
Other-than-temporary impairment losses
0 
0 
0 
0 
Other comprehensive gain (loss)
(160)
48 
(1,757)
(229)
Balance at end of period
38,847 
41,662 
38,847 
41,662 
Available-for-sale Securities [Member] |
Other debt securities [Member]
 
 
 
 
Fair Value Assets Measured on Recurring Basis Unobservable Reconciliation [Roll Forward]
 
 
 
 
Balance at beginning of period
5,193 
5,900 
5,399 
5,900 
Purchases and capital calls
0 
0 
0 
0 
Redemptions and distributions
0 
(500)
0 
(500)
Gain (loss) recognized in earnings [Abstract]
 
 
 
 
Gain on other assets, net
0 
0 
0 
0 
Gain on available for sale securities net
0 
0 
0 
0 
Other-than-temporary impairment losses
0 
0 
0 
0 
Other comprehensive gain (loss)
0 
(12)
(206)
(12)
Balance at end of period
5,193 
5,388 
5,193 
5,388 
Available-for-sale Securities [Member] |
Equity Securities and Mutual Funds [Member]
 
 
 
 
Fair Value Assets Measured on Recurring Basis Unobservable Reconciliation [Roll Forward]
 
 
 
 
Balance at beginning of period
2,472 
 
2,161 
 
Purchases and capital calls
0 
 
0 
 
Redemptions and distributions
0 
 
0 
 
Gain (loss) recognized in earnings [Abstract]
 
 
 
 
Gain on other assets, net
0 
 
0 
 
Gain on available for sale securities net
0 
 
0 
 
Other-than-temporary impairment losses
0 
 
0 
 
Other comprehensive gain (loss)
(225)
 
86 
 
Balance at end of period
2,247 
 
2,247 
 
Other Assets [Member] |
Private Equity Funds [Member]
 
 
 
 
Fair Value Assets Measured on Recurring Basis Unobservable Reconciliation [Roll Forward]
 
 
 
 
Balance at beginning of period
29,216 
30,993 
28,169 
30,902 
Purchases and capital calls
148 
820 
640 
1,909 
Redemptions and distributions
(1,005)
(2,559)
(1,835)
(3,166)
Gain (loss) recognized in earnings [Abstract]
 
 
 
 
Gain on other assets, net
20 
2,238 
1,405 
1,847 
Gain on available for sale securities net
0 
0 
0 
0 
Other-than-temporary impairment losses
0 
0 
0 
0 
Other comprehensive gain (loss)
0 
0 
0 
0 
Balance at end of period
$ 28,379 
$ 31,492 
$ 28,379 
$ 31,492 
Fair Value Measurements Fair Value Measurements, Financial Instruments Measured On a Recurring Basis, Quantitative Information (Details) (Fair Value, Inputs, Level 3 [Member], USD $)
In Thousands, unless otherwise specified
6 Months Ended 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Municipal and other tax-exempt securities [Member]
 
 
 
Fair Value Inputs, Assets, Quantitative Information [Line Items]
 
 
 
Fair Value Inputs, Asset, Par Value
$ 45,470 
$ 46,100 
$ 45,570 
Fair Value Inputs, Asset, Amortized Cost
40,759 1
42,394 1
40,857 1
Fair Value Inputs, Asset, Fair Value
38,847 
41,662 
40,702 
Municipal and other tax-exempt securities [Member] |
External Credit Rating, Investment Grade [Member]
 
 
 
Fair Value Inputs, Assets, Quantitative Information [Line Items]
 
 
 
Fair Value Inputs, Asset, Par Value
28,470 
29,100 
28,570 
Fair Value Inputs, Asset, Amortized Cost
28,375 1
28,998 1
28,473 1
Fair Value Inputs, Asset, Fair Value
27,116 
28,858 
28,318 
Fair Value Measurements, Valuation Techniques
Discounted cash flows 2
Discounted cash flows 2
Discounted cash flows 2
Fair Value Measurements, Significant Unobservable Input
Interest rate spread 
Interest rate spread 
Interest rate spread 
Fair Value Inputs, Assets, Discount Rate, Minimum
4.99% 3
1.00% 4
1.00% 4
Fair Value Inputs, Assets, Discount Rate, Maximum
5.49% 3
1.50% 4
1.50% 4
Fair Value Inputs, Assets, Discount Rate, Weighted Average
5.24% 3
1.25% 4
1.25% 4
Fair Value Inputs, Assets, Fair Value As Percentage of Par Value, Minimum
95.01% 5
98.88% 5
98.83% 5
Fair Value Inputs, Assets, Fair Value As Percentage of Par Value, Maximum
95.60% 5
99.49% 5
99.43% 5
Fair Value Inputs, Fair Value As Percentage of Par Value, Weighted Average
95.25% 5
99.17% 5
99.12% 5
Investment Grade Tax Exempt Securities Yield Spread Over Comparable Securities Minimum
457 
75 
75 
Investment Grade Tax Exempt Securities Yield Spread Over Comparable Securities Maximum
520 
80 
80 
Additional Decrease in Fair Value From a 100 Basis Point Increase in Interest Rate Spread
(262)
 
 
Municipal and other tax-exempt securities [Member] |
External Credit Rating, Non Investment Grade [Member]
 
 
 
Fair Value Inputs, Assets, Quantitative Information [Line Items]
 
 
 
Fair Value Inputs, Asset, Par Value
17,000 
17,000 
17,000 
Fair Value Inputs, Asset, Amortized Cost
12,384 1
13,396 1
12,384 1
Fair Value Inputs, Asset, Fair Value
11,731 
12,804 
12,384 
Fair Value Measurements, Valuation Techniques
Discounted cash flows 2
Discounted cash flows 2
Discounted cash flows 2
Fair Value Measurements, Significant Unobservable Input
Interest rate spread 
Interest rate spread 
Interest rate spread 
Fair Value Inputs, Assets, Discount Rate, Minimum
9.15% 6
6.20% 7
7.21% 6
Fair Value Inputs, Assets, Discount Rate, Maximum
11.19% 6
9.16% 7
9.83% 6
Fair Value Inputs, Assets, Discount Rate, Weighted Average
9.87% 6
6.87% 7
7.82% 6
Fair Value Inputs, Assets, Fair Value As Percentage of Par Value, Minimum
68.91% 5
75.21% 5
72.79% 5
Fair Value Inputs, Assets, Fair Value As Percentage of Par Value, Maximum
69.09% 5
75.49% 5
73.00% 5
Fair Value Inputs, Fair Value As Percentage of Par Value, Weighted Average
69.01% 5
75.32% 5
72.85% 5
Below Investment Grade Tax Exempt Securities Yield Spread Over Comparable Securities
700 
600 
700 
Additional Decrease in Fair Value From a 100 Basis Point Increase in Interest Rate Spread
(330)
 
 
Other debt securities [Member]
 
 
 
Fair Value Inputs, Assets, Quantitative Information [Line Items]
 
 
 
Fair Value Inputs, Asset, Par Value
5,400 
5,400 
5,400 
Fair Value Inputs, Asset, Amortized Cost
5,400 1
5,400 1
5,400 1
Fair Value Inputs, Asset, Fair Value
5,193 
5,388 
5,399 
Fair Value Measurements, Valuation Techniques
Discounted cash flows 2
Discounted cash flows 2
Discounted cash flows 2
Fair Value Measurements, Significant Unobservable Input
Interest rate spread 
Interest rate spread 
Interest rate spread 
Fair Value Inputs, Assets, Discount Rate, Minimum
4.41% 8
1.74% 8
1.65% 8
Fair Value Inputs, Assets, Discount Rate, Maximum
5.69% 8
1.75% 8
1.71% 8
Fair Value Inputs, Assets, Discount Rate, Weighted Average
5.48% 8
1.74% 8
1.70% 8
Fair Value Inputs, Assets, Fair Value As Percentage of Par Value, Minimum
96.13% 5
98.72% 5
100.00% 5
Fair Value Inputs, Assets, Fair Value As Percentage of Par Value, Maximum
96.16% 5
100.00% 5
100.00% 5
Fair Value Inputs, Fair Value As Percentage of Par Value, Weighted Average
96.16% 5
99.78% 5
100.00% 5
Average Yields On Comparable Short-term Taxable Securities Maximum
1.00% 
1.00% 
1.00% 
Additional Decrease in Fair Value From a 100 Basis Point Increase in Interest Rate Spread
(50)
 
 
Equity securities and mutual funds [Member]
 
 
 
Fair Value Inputs, Assets, Quantitative Information [Line Items]
 
 
 
Fair Value Inputs, Asset, Amortized Cost
2,420 1
 
2,161 1
Fair Value Inputs, Asset, Fair Value
2,247 
 
2,161 
Fair Value Measurements, Valuation Techniques
Tangible book value per share of publicly traded financial institutions of similar size, less liquidity discount. 9
 
Tangible book value per share of publicly traded financial institutions of similar size, less liquidity discount. 9
Fair Value Measurements, Significant Unobservable Input
Peer group tangible book per share and liquidity discount. 
 
Peer group tangible book per share and liquidity discount. 
Fair Value Inputs, Assets, Liquidity Discount
20.00% 
 
20.00% 
Other assets - private equity funds [Member]
 
 
 
Fair Value Inputs, Assets, Quantitative Information [Line Items]
 
 
 
Fair Value Inputs, Asset, Fair Value
$ 28,379 
$ 31,492 
$ 28,169 
Fair Value Measurements, Valuation Techniques
Net asset value reported by underlying fund 
Net asset value reported by underlying fund 
Net asset value reported by underlying fund 
Fair Value Measurements, Significant Unobservable Input
Net asset value reported by underlying fund 
Net asset value reported by underlying fund 
Net asset value reported by underlying fund 
Fair Value Measurements, Fair Value Measured On a Nonrecurring Basis (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Fair Value, Impaired Loans [Member]
 
 
 
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
 
 
 
 
Gross charge-offs against allowance for loan losses
$ 5,060 
$ 4,406 
$ 6,601 
$ 10,826 
Net losses and expenses of repossessed assets, net
0 
0 
0 
0 
Fair Value, Real estate and other repossessed assets [Member]
 
 
 
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
 
 
 
 
Gross charge-offs against allowance for loan losses
0 
0 
0 
0 
Net losses and expenses of repossessed assets, net
863 
4,488 
1,014 
6,876 
Fair Value, Inputs, Level 1 [Member] |
Fair Value, Impaired Loans [Member]
 
 
 
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
 
 
 
 
Assets, Fair Value Disclosure, Nonrecurring
0 
0 
0 
0 
Fair Value, Inputs, Level 1 [Member] |
Fair Value, Real estate and other repossessed assets [Member]
 
 
 
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
 
 
 
 
Assets, Fair Value Disclosure, Nonrecurring
0 
0 
0 
0 
Fair Value, Inputs, Level 2 [Member] |
Fair Value, Impaired Loans [Member]
 
 
 
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
 
 
 
 
Assets, Fair Value Disclosure, Nonrecurring
10,245 
29,369 
10,245 
29,369 
Fair Value, Inputs, Level 2 [Member] |
Fair Value, Real estate and other repossessed assets [Member]
 
 
 
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
 
 
 
 
Assets, Fair Value Disclosure, Nonrecurring
7,949 
27,474 
7,949 
27,474 
Fair Value, Inputs, Level 3 [Member] |
Fair Value, Impaired Loans [Member]
 
 
 
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
 
 
 
 
Assets, Fair Value Disclosure, Nonrecurring
4,930 
2,881 
4,930 
2,881 
Fair Value, Inputs, Level 3 [Member] |
Fair Value, Real estate and other repossessed assets [Member]
 
 
 
 
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
 
 
 
 
Assets, Fair Value Disclosure, Nonrecurring
$ 271 
$ 3,035 
$ 271 
$ 3,035 
Fair Value Measurements Fair Value Measurement, Measured On Non-Recurring Basis, Signfiicant Unobservable Inputs, Quantitative Information (Details) (Fair Value, Measurements, Nonrecurring [Member], Fair Value, Inputs, Level 3 [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Fair Value, Impaired Loans [Member]
 
 
Fair Value Inputs, Assets, Quantitative Information [Line Items]
 
 
Assets, Fair Value Disclosure, Nonrecurring
$ 4,930 
$ 2,881 
Fair Value Measurements, Valuation Techniques
Appraised value, as adjusted 
Appraised value, as adjusted 
Fair Value Measurements, Significant Unobservable Input
Broker quotes and management's knowledge of industry and collateral. 
Broker quotes and management's knowledge of industry and collateral. 
Fair Value, Real estate and other repossessed assets [Member]
 
 
Fair Value Inputs, Assets, Quantitative Information [Line Items]
 
 
Assets, Fair Value Disclosure, Nonrecurring
271 
3,035 
Fair Value Measurements, Valuation Techniques
Listing value, less cost to sell 
Listing value, less cost to sell 
Fair Value Measurements, Significant Unobservable Input
Marketability adjustments off appraised value 
Marketability adjustments off appraised value 
Fair Value Measurement, Percentage of Appraised Value, Minimum
71.00% 1
58.00% 2
Fair Value Measurement, Percentage of Appraised Value, Maximum
81.00% 1
85.00% 2
Fair Value Measurement, Percentage of Appraised Value, Weighted Average
76.00% 1
71.00% 2
Fair Value Measurement, Fair Value With No Third Party Appraisal
 
$ 887 
Fair Value Measurements, Financial Instruments (Details) (USD $)
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Investment securities [Abstract]
 
 
 
 
 
 
Total investment securities
$ 615,790,000 1
 
$ 499,534,000 2
$ 412,479,000 3
 
 
Fair Value Option Securities [Abstract]
 
 
 
 
 
 
Residential mortgage loans held for sale
301,057,000 
 
293,762,000 
259,174,000 
 
 
Loans [Abstract]
 
 
 
 
 
 
Total
12,440,782,000 
 
12,311,456,000 
11,576,431,000 
 
 
Allowance for loan losses
(203,124,000)
(205,965,000)
(215,507,000)
(231,669,000)
(244,209,000)
(253,481,000)
Loans, net of allowance
12,237,658,000 
 
12,095,949,000 
11,344,762,000 
 
 
Mortgage servicing rights, Fair Value Disclosure
132,889,000 
109,840,000 
100,812,000 
91,783,000 
98,138,000 
86,783,000 
Derviative contracts, net of cash margin, assets, Fair Value Disclosure
546,206,000 
 
338,106,000 
366,204,000 
 
 
Time deposits
2,767,972,000 
 
2,967,992,000 
3,107,950,000 
 
 
Subordinated debentures
347,716,000 
 
347,633,000 
353,378,000 
 
 
Derivative contracts net of cash margin, liabilities, Fair Value DIsclosure
521,991,000 
 
283,589,000 
370,053,000 
 
 
Fair Value Assumptions and Methodology for Assets and Liabilities [Abstract]
 
 
 
 
 
 
Specific allocation of allowance for loan losses included in fair value of loans
161,000,000 
 
171,000,000 
191,000,000 
 
 
Carrying (Reported) Amount, Fair Value Disclosure [Member]
 
 
 
 
 
 
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
 
 
 
 
 
 
Cash and cash equivalents
1,078,385,000 
 
1,286,239,000 
639,263,000 
 
 
Trading Securities [Abstract]
 
 
 
 
 
 
U.S. Government Agency Debentures, Trading Securities, Fair Value Disclosure
60,713,000 
 
16,545,000 
53,514,000 
 
 
U.S. Agency Residential Mortgage-backed Securities, Trading Securities, Fair Value Disclosure
43,858,000 
 
86,361,000 
46,502,000 
 
 
Municipal And Other-tax Exempt Securities, Trading Securities, Fair Value Disclosure
53,819,000 
 
90,326,000 
44,632,000 
 
 
Other Trading Securities, Trading Securities, Fair Value Disclosure
32,201,000 
 
20,870,000 
4,669,000 
 
 
Trading Securities, Fair Value Disclosure
190,591,000 
 
214,102,000 
149,317,000 
 
 
Investment securities [Abstract]
 
 
 
 
 
 
Municipal and other tax-exempt
375,317,000 
 
232,700,000 
126,168,000 
 
 
U.S. agency residential mortgage-backed securities
64,172,000 
 
82,767,000 
102,347,000 
 
 
Other debt securities
176,301,000 
 
184,067,000 
183,964,000 
 
 
Total investment securities
615,790,000 
 
499,534,000 
412,479,000 
 
 
Available for sale securities [Abstract]
 
 
 
 
 
 
U.S. Treasury Securities, Available for Sale Securities, Fair Value DIsclosure
1,060,000 
 
1,002,000 
1,003,000 
 
 
Municipal and Other Tax-exempt Securities, Available for Sale Securities, Fair Value Disclosure
95,103,000 
 
87,142,000 
88,458,000 
 
 
U.S. Agency Residential Mortgage-backed Securities. Available for Sale Securities, Fair Value Disclosure
8,372,795,000 
 
9,889,821,000 
9,903,532,000 
 
 
Privately Issued Residential Mortgage-backed Securities, Available for Sale Securities, Fair Value Disclosure
297,175,000 
 
325,163,000 
317,761,000 
 
 
Commercial Mortgage-backed Securities, Available for Sale Securities, Fair Value Disclosure
1,846,943,000 
 
895,075,000 
 
 
 
Other Debt Securities, Available for Sale Securities, Fair Value Disclosure
35,894,000 
 
36,389,000 
36,286,000 
 
 
Perpetual Preferred Stock, Available for Sale Securities, Fair Value Disclosure
25,583,000 
 
25,072,000 
23,431,000 
 
 
Equity Securities and Mutual Funds, Available for Sale Securities, Fair Value Disclosure
23,521,000 
 
27,557,000 
24,944,000 
 
 
Available for Sale Securities, Fair Value Disclosure
10,698,074,000 
 
11,287,221,000 
10,395,415,000 
 
 
Fair Value Option Securities [Abstract]
 
 
 
 
 
 
U.S. Agency Residential Mortgage-backed Securities, Fair Value Option Securities, Fair Value Disclosure
203,816,000 
 
257,040,000 
299,467,000 
 
 
Corporate Debt Securities, Fair Value Option Securities, Fair Value Disclosure
 
 
26,486,000 
25,710,000 
 
 
Other Securities, Fair Value Option Securities, Fair Value Disclosure
1,940,000 
 
770,000 
 
 
 
Fair Value Option Securities, Fair Value Disclosure
205,756,000 
 
284,296,000 
325,177,000 
 
 
Residential mortgage loans held for sale
301,057,000 
 
293,762,000 
259,174,000 
 
 
Loans [Abstract]
 
 
 
 
 
 
Commercial
7,708,120,000 
 
7,641,912,000 
7,035,535,000 
 
 
Commercial real estate
2,317,096,000 
 
2,228,999,000 
2,149,730,000 
 
 
Residential mortgage
2,039,785,000 
 
2,045,040,000 
2,002,885,000 
 
 
Consumer
375,781,000 
 
395,505,000 
388,281,000 
 
 
Total
12,440,782,000 
 
12,311,456,000 
11,576,431,000 
 
 
Allowance for loan losses
(203,124,000)
 
(215,507,000)
(231,669,000)
 
 
Loans, net of allowance
12,237,658,000 
 
12,095,949,000 
11,344,762,000 
 
 
Mortgage servicing rights, Fair Value Disclosure
132,889,000 
 
100,812,000 
91,783,000 
 
 
Derviative contracts, net of cash margin, assets, Fair Value Disclosure
546,206,000 
 
338,106,000 
366,204,000 
 
 
Other assets - private equity funds
28,379,000 
 
28,169,000 
31,492,000 
 
 
Deposits with no stated maturity
16,728,258,000 
 
18,211,068,000 
15,157,587,000 
 
 
Time deposits
2,767,972,000 
 
2,967,992,000 
3,107,950,000 
 
 
Other borrowings
4,073,915,000 
 
2,706,221,000 
2,648,753,000 
 
 
Subordinated debentures
347,716,000 
 
347,633,000 
353,378,000 
 
 
Derivative contracts net of cash margin, liabilities, Fair Value DIsclosure
521,991,000 
 
283,589,000 
370,053,000 
 
 
Estimate of Fair Value, Fair Value Disclosure [Member]
 
 
 
 
 
 
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
 
 
 
 
 
 
Cash and cash equivalents
1,078,385,000 
 
1,286,239,000 
639,263,000 
 
 
Trading Securities [Abstract]
 
 
 
 
 
 
U.S. Government Agency Debentures, Trading Securities, Fair Value Disclosure
60,713,000 
 
16,545,000 
53,514,000 
 
 
U.S. Agency Residential Mortgage-backed Securities, Trading Securities, Fair Value Disclosure
43,858,000 
 
86,361,000 
46,502,000 
 
 
Municipal And Other-tax Exempt Securities, Trading Securities, Fair Value Disclosure
53,819,000 
 
90,326,000 
44,632,000 
 
 
Other Trading Securities, Trading Securities, Fair Value Disclosure
32,201,000 
 
20,870,000 
4,669,000 
 
 
Trading Securities, Fair Value Disclosure
190,591,000 
 
214,102,000 
149,317,000 
 
 
Investment securities [Abstract]
 
 
 
 
 
 
Municipal and other tax-exempt
371,690,000 
 
235,940,000 
130,308,000 
 
 
U.S. agency residential mortgage-backed securities
66,796,000 
 
85,943,000 
105,535,000 
 
 
Other debt securities
187,219,000 
 
206,575,000 
204,795,000 
 
 
Total investment securities
625,705,000 
 
528,458,000 
440,638,000 
 
 
Available for sale securities [Abstract]
 
 
 
 
 
 
U.S. Treasury Securities, Available for Sale Securities, Fair Value DIsclosure
1,060,000 
 
1,002,000 
1,003,000 
 
 
Municipal and Other Tax-exempt Securities, Available for Sale Securities, Fair Value Disclosure
95,103,000 
 
87,142,000 
88,458,000 
 
 
U.S. Agency Residential Mortgage-backed Securities. Available for Sale Securities, Fair Value Disclosure
8,372,795,000 
 
9,889,821,000 
9,903,532,000 
 
 
Privately Issued Residential Mortgage-backed Securities, Available for Sale Securities, Fair Value Disclosure
297,175,000 
 
325,163,000 
317,761,000 
 
 
Commercial Mortgage-backed Securities, Available for Sale Securities, Fair Value Disclosure
1,846,943,000 
 
895,075,000 
 
 
 
Other Debt Securities, Available for Sale Securities, Fair Value Disclosure
35,894,000 
 
36,389,000 
36,286,000 
 
 
Perpetual Preferred Stock, Available for Sale Securities, Fair Value Disclosure
25,583,000 
 
25,072,000 
23,431,000 
 
 
Equity Securities and Mutual Funds, Available for Sale Securities, Fair Value Disclosure
23,521,000 
 
27,557,000 
24,944,000 
 
 
Available for Sale Securities, Fair Value Disclosure
10,698,074,000 
 
11,287,221,000 
10,395,415,000 
 
 
Fair Value Option Securities [Abstract]
 
 
 
 
 
 
U.S. Agency Residential Mortgage-backed Securities, Fair Value Option Securities, Fair Value Disclosure
203,816,000 
 
257,040,000 
299,467,000 
 
 
Corporate Debt Securities, Fair Value Option Securities, Fair Value Disclosure
 
 
26,486,000 
25,710,000 
 
 
Other Securities, Fair Value Option Securities, Fair Value Disclosure
1,940,000 
 
770,000 
 
 
 
Fair Value Option Securities, Fair Value Disclosure
205,756,000 
 
284,296,000 
325,177,000 
 
 
Residential mortgage loans held for sale
301,057,000 
 
293,762,000 
259,174,000 
 
 
Loans [Abstract]
 
 
 
 
 
 
Commercial
7,638,327,000 
 
7,606,505,000 
6,993,377,000 
 
 
Commercial real estate
2,288,188,000 
 
2,208,217,000 
2,129,731,000 
 
 
Residential mortgage
2,038,375,000 
 
2,110,773,000 
2,040,062,000 
 
 
Consumer
369,375,000 
 
388,748,000 
383,088,000 
 
 
Total
12,334,265,000 
 
12,314,243,000 
11,546,258,000 
 
 
Allowance for loan losses
0 
 
0 
0 
 
 
Loans, net of allowance
12,334,265,000 
 
12,314,243,000 
11,546,258,000 
 
 
Mortgage servicing rights, Fair Value Disclosure
132,889,000 
 
100,812,000 
91,783,000 
 
 
Derviative contracts, net of cash margin, assets, Fair Value Disclosure
546,206,000 
 
338,106,000 
366,204,000 
 
 
Other assets - private equity funds
28,379,000 
 
28,169,000 
31,492,000 
 
 
Deposits with no stated maturity
16,728,258,000 
 
18,211,068,000 
15,157,587,000 
 
 
Time deposits
2,781,202,000 
 
3,037,708,000 
3,175,687,000 
 
 
Other borrowings
4,034,685,000 
 
2,696,574,000 
2,642,598,000 
 
 
Subordinated debentures
345,201,000 
 
345,675,000 
350,813,000 
 
 
Derivative contracts net of cash margin, liabilities, Fair Value DIsclosure
521,991,000 
 
283,589,000 
370,053,000 
 
 
Contractual Yield, Minimum [Member]
 
 
 
 
 
 
Loans [Abstract]
 
 
 
 
 
 
Commercial
0.0025 
 
0.0021 
0.0025 
 
 
Commercial real estate
0.0038 
 
0.0021 
0.0038 
 
 
Residential mortgage
0.0038 
 
0.0038 
0.0038 
 
 
Consumer
0.0038 
 
0.0038 
0.0038 
 
 
Time deposits
0.0003 
 
0.0001 
0.0001 
 
 
Other borrowings
0.0025 
 
0.0009 
0.0009 
 
 
Subordinated debentures
0.0097 
 
0.0100 
0.0116 
 
 
Contractual Yield, Maximum [Member]
 
 
 
 
 
 
Loans [Abstract]
 
 
 
 
 
 
Commercial
0.3000 
 
0.3000 
0.3000 
 
 
Commercial real estate
0.1800 
 
0.1800 
0.1800 
 
 
Residential mortgage
0.1800 
 
0.1800 
0.1800 
 
 
Consumer
0.2100 
 
0.2100 
0.2100 
 
 
Time deposits
0.0964 
 
0.0964 
0.0964 
 
 
Other borrowings
0.0525 
 
0.0525 
0.0525 
 
 
Subordinated debentures
0.0500 
 
0.0500 
0.0500 
 
 
Average Repricing [Member]
 
 
 
 
 
 
Loans [Abstract]
 
 
 
 
 
 
Commercial
0.63 
 
0.69 
0.70 
 
 
Commercial real estate
0.83 
 
0.92 
0.92 
 
 
Residential mortgage
3.64 
 
3.34 
3.10 
 
 
Consumer
0.35 
 
0.32 
0.34 
 
 
Time deposits
2.02 
 
2.15 
2.17 
 
 
Other borrowings
0.00 
 
0.00 
0.00 
 
 
Subordinated debentures
3.10 
 
3.56 
4.02 
 
 
Discount Rate, Minimum [Member]
 
 
 
 
 
 
Loans [Abstract]
 
 
 
 
 
 
Commercial
0.0059 
 
0.0051 
0.0063 
 
 
Commercial real estate
0.0123 
 
0.0126 
0.0133 
 
 
Residential mortgage
0.0070 
 
0.0086 
0.0108 
 
 
Consumer
0.0126 
 
0.0137 
0.0159 
 
 
Time deposits
0.0076 
 
0.0080 
0.0092 
 
 
Other borrowings
0.0007 
 
0.0009 
0.0009 
 
 
Subordinated debentures
0.0224 
 
0.0240 
0.0240 
 
 
Discount Rate, Maximum [Member]
 
 
 
 
 
 
Loans [Abstract]
 
 
 
 
 
 
Commercial
0.0419 
 
0.0359 
0.0368 
 
 
Commercial real estate
0.0347 
 
0.0318 
0.0333 
 
 
Residential mortgage
0.0446 
 
0.0309 
0.0352 
 
 
Consumer
0.0374 
 
0.0360 
0.0379 
 
 
Time deposits
0.0130 
 
0.0115 
0.0131 
 
 
Other borrowings
0.0266 
 
0.0267 
0.0270 
 
 
Subordinated debentures
$ 0.0224 
 
$ 0.0240 
$ 0.0240 
 
 
Federal and State Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Amount [Abstract]
 
 
 
 
Federal statutory tax
$ 42,459 
$ 53,414 
$ 90,113 
$ 98,463 
Tax exempt revenue
(1,803)
(1,334)
(3,545)
(2,598)
Effect of state income taxes, net of federal benefit
3,122 
3,572 
6,500 
6,570 
Utilization of tax credits
(1,826)
(1,467)
(3,548)
(2,564)
Bank-owned life insurance
(993)
(976)
(1,878)
(1,955)
Other, net
464 
(60)
877 
753 
Total
$ 41,423 
$ 53,149 
$ 88,519 
$ 98,669 
Percent of pretax income [Abstract]
 
 
 
 
Federal statutory tax (in hundredths)
35.00% 
35.00% 
35.00% 
35.00% 
Tax exempt revenue (in hundredths)
(1.00%)
(1.00%)
(1.00%)
(1.00%)
Effect of state income taxes, net of federal benefit (in hundredths)
3.00% 
3.00% 
2.00% 
2.00% 
Utilization of tax credits (in hundredths)
(2.00%)
(1.00%)
(1.00%)
(1.00%)
Bank-owned life insurance (in hundredths)
(1.00%)
(1.00%)
(1.00%)
(1.00%)
Other, net (in hundredths)
0.00% 
0.00% 
0.00% 
1.00% 
Total (in hundredths)
34.00% 
35.00% 
34.00% 
35.00%