BOK FINANCIAL CORP ET AL, 10-K filed on 2/28/2012
Annual Report
Document And Entity Information (USD $)
12 Months Ended
Dec. 31, 2011
Jan. 31, 2012
Jun. 30, 2011
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
No 
 
 
Entity Filer Category
Large Accelerated Filer 
 
 
Entity Public Float
 
 
$ 1,400,000,000 
Entity Common Stock, Shares Outstanding
 
68,006,390 
 
Document Fiscal Year Focus
2010 
 
 
Document Fiscal Period Focus
FY 
 
 
Document Type
10-K 
 
 
Amendment Flag
false 
 
 
Document Period End Date
Dec. 31, 2011 
 
 
Consolidated Statements of Earnings (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Interest revenue
 
 
 
Loans
$ 504,989 
$ 522,559 
$ 562,367 
Residential mortgage loans held for sale
6,492 
9,261 
10,102 
Trading securities
1,836 
2,172 
2,883 
Taxable securities
12,581 
7,229 
107 
Tax-exempt securities
4,768 
6,402 
7,571 
Total investment securities
17,349 
13,631 
7,678 
Taxable securities
259,871 
283,583 
314,264 
Tax-exempt securities
2,394 
2,446 
2,572 
Total available for sale securities
262,265 
286,029 
316,836 
Fair value option securities
18,649 
17,403 
14,626 
Funds sold and resell agreements
15 
27 
77 
Total interest revenue
811,595 
851,082 
914,569 
Interest expense
 
 
 
Deposits
88,890 
106,265 
164,362 
Borrowed funds
8,826 
13,334 
17,545 
Subordinated debentures
22,385 
22,431 
22,298 
Total interest expense
120,101 
142,030 
204,205 
Net interest revenue
691,494 
709,052 
710,364 
Provision for (reduction of ) allowances for credit losses
(6,050)
105,139 
195,900 
Net interest revenue after provision (reduction of) allowances for credit losses
697,544 
603,913 
514,464 
Other operating revenue
 
 
 
Brokerage and trading revenue
104,181 
101,471 
91,677 
Transaction card revenue
116,757 
112,302 
105,517 
Trust fees and commissions
73,290 
68,976 
66,177 
Deposit service charges and fees
95,872 
103,611 
115,791 
Mortgage banking revenue
91,643 
87,600 
64,980 
Bank-owned life insurance
11,280 
12,066 
10,239 
Other revenue
35,620 
30,368 
26,131 
Total fees and commissions
528,643 
516,394 
480,512 
Gain (loss) on other assets, net
5,885 
(1,161)
4,134 
Gain (loss) on derivatives, net
2,686 
4,271 
(3,365)
Gain (loss) on fair value option securities, net
24,413 
7,331 
(13,198)
Gain on available for sale securities, net
34,144 
21,882 
59,320 
Total other-than-temporary impairment losses
(10,578)
(29,960)
(129,154)
Portion of loss recognized in (reclassified from) other comprehensive income
(12,929)
2,151 
94,741 
Net impairment losses recognized in earnings
(23,507)
(27,809)
(34,413)
Total other operating revenue
572,264 
520,908 
492,990 
Other operating expense
 
 
 
Personnel
429,986 
401,864 
380,517 
Business promotion
20,549 
17,726 
19,582 
Contribution to BOKF Charitable Foundation
4,000 
0 
0 
Professional fees and services
28,798 
30,217 
30,243 
Net occupancy and equipment
64,611 
63,969 
65,715 
Insurance
16,799 
24,320 
24,040 
FDIC special assessment
0 
0 
11,773 
Data processing and communications
97,976 
87,752 
81,292 
Printing, postage and supplies
14,085 
13,665 
15,960 
Net losses and operating expenses of repossessed assets
23,715 
34,483 
11,400 
Amortization of intangible assets
3,583 
5,336 
6,970 
Mortgage banking costs
34,942 
40,739 
36,304 
Change in fair value of mortgage servicing rights
40,447 
(3,661)
(12,124)
Other expense
41,982 
36,760 
25,061 
Total other operating expense
821,473 
753,170 
696,733 
Income before taxes
448,335 
371,651 
310,721 
Federal and state income tax
158,511 
123,357 
106,705 
Net income
289,824 
248,294 
204,016 
Net income attributable to non-controlling interest
3,949 
1,540 
3,438 
Net income attributable to BOK Financial Corp.
$ 285,875 
$ 246,754 
$ 200,578 
Basic (in dollars per share)
$ 4.18 
$ 3.63 
$ 2.96 
Diluted (in dollars per share)
$ 4.17 
$ 3.61 
$ 2.96 
Basic (in shares)
67,787,676 
67,627,735 
67,375,387 
Diluted (in shares)
68,038,763 
67,831,734 
67,487,944 
Dividends declared per share
$ 1.13 
$ 0.99 
$ 0.945 
Consolidated Balance Sheets (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Assets
 
 
Cash and due from banks
$ 976,191 
$ 1,247,946 
Funds sold and resell agreements
10,174 
21,458 
Trading securities
76,800 
55,467 
Investment securities
439,236 
339,553 
Available for sale securities
10,179,365 
9,096,277 
Available for sale securities pledged to creditors
0 
139,344 
Total available for sale securities
10,179,365 
9,235,621 
Fair value option securities
651,226 
428,021 
Residential mortgage loans held for sale
188,125 
263,413 
Loans
11,269,743 
10,643,036 
Less allowance for loan losses
(253,481)
(292,971)
Loans, net of allowance
11,016,262 
10,350,065 
Premises and equipment, net
262,735 
265,465 
Receivables
123,257 
148,940 
Goodwill
335,601 
335,601 
Intangible assets, net
10,219 
13,803 
Mortgage servicing rights
86,783 
115,723 
Real estate and other repossessed assets
122,753 
141,394 
Bankers' acceptances
1,881 
1,222 
Derivative contracts, assets
293,859 1
270,445 1
Cash surrender value of bank-owned life insurance
263,318 
255,442 
Receivable on unsettled securities trades
75,151 
135,059 
Other assets
381,010 
316,965 
Total assets
25,493,946 
23,941,603 
Liabilities and shareholders' equity
 
 
Noninterest-bearing demand deposits
5,799,785 
4,220,764 
Interest-bearing deposits:
 
 
Transaction
9,354,456 
9,255,362 
Savings
226,357 
193,767 
Time
3,381,982 
3,509,168 
Total deposits
18,762,580 
17,179,061 
Funds purchased
1,063,318 
1,025,018 
Repurchase agreements
1,233,064 
1,258,762 
Other borrowings
74,485 
833,578 
Subordinated debentures
398,881 
398,701 
Accrued interest, taxes and expense
149,508 
134,107 
Bankers' acceptances
1,881 
1,222 
Due on unsettled securities trades
653,371 
160,425 
Derivative contracts
236,522 1
215,420 1
Other liabilities
133,684 
191,431 
Total liabilities
22,707,294 
21,397,725 
Common stock
4 
4 
Capital surplus
818,817 
782,805 
Retained earnings
1,953,332 
1,743,880 
Treasury stock
(150,664)
(112,802)
Accumulated other comprehensive income
128,979 
107,839 
Total shareholders' equity
2,750,468 
2,521,726 
Non-controlling interest
36,184 
22,152 
Total equity
2,786,652 
2,543,878 
Total liabilities and equity
$ 25,493,946 
$ 23,941,603 
Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Assets
 
 
Investment securities, fair value
$ 462,657 
$ 346,105 
Real estate and other repossessed assets, allowance
32,911 
26,208 
Interest-bearing deposits:
 
 
Interest bearing deposit liabilities measured at fair value
$ 0 
$ 27,414 
Shareholders' equity:
 
 
Common stock, par value (in dollars per share)
$ 0.00006 
$ 0.00006 
Common stock, shares authorized (in shares)
2,500,000,000 
2,500,000,000 
Common stock, shares issued (in shares)
71,533,354 
70,815,563 
Common stock, shares outstanding (in shares)
71,533,354 
70,815,563 
Treasury stock, shares (in shares)
3,380,310 
2,607,874 
Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Cash Flows From Operating Activities:
 
 
 
Net income
$ 289,824 
$ 248,294 
$ 204,016 
Provision for (reduction of) allowances for credit losses
(6,050)
105,139 
195,900 
Change in fair value of mortgage servicing rights
40,447 
(3,661)
(12,124)
Unrealized (gains) losses from derivatives
(9,651)
(18,882)
23,000 
Depreciation and amortization
49,967 
58,987 
60,347 
Change in bank-owned life insurance
(11,280)
(12,066)
(10,239)
Tax expense (benefit) on exercise of stock options
(659)
(425)
276 
Stock-based compensation
9,396 
8,160 
5,862 
Net amortization (accretion) of securities discounts and premiums
112,227 
105,680 
35,636 
Net realized losses (gains) on financial instruments and other assets
(3,589)
1,420 
(46,318)
Mortgage loans originated for resale
(2,293,436)
(2,256,943)
(2,676,868)
Proceeds from sale of mortgage loans held for resale
2,369,895 
2,246,228 
2,619,399 
Capitalized mortgage servicing rights
(26,251)
(27,603)
(39,869)
Change in trading and fair value option securities
(247,386)
(139,319)
102,121 
Change in receivables
24,236 
(40,118)
(12,149)
Change in other assets
16,469 
9,023 
(166,487)
Change in accrued interest, taxes and expense
63,827 
22,227 
(21,340)
Change in other liabilities
(50,198)
59,037 
(7,571)
Net cash provided by operating activities
327,788 
365,178 
253,592 
Cash Flows From Investing Activities:
 
 
 
Proceeds from sales of available for sale securities
2,725,760 
2,013,620 
3,242,282 
Proceeds from maturities of investment securities
68,020 
111,976 
91,562 
Proceeds from maturities of available for sale securities
3,650,900 
3,185,131 
1,600,165 
Purchases of investment securities
(37,085)
(211,312)
(89,816)
Purchases of available for sale securities
(7,504,261)
(5,565,931)
(6,966,218)
Change in amount receivable on unsettled security transactions
59,908 
(135,059)
0 
Loans originated or acquired net of principal collected
(598,499)
469,223 
1,328,731 
Net payments or proceeds on derivative asset contracts
4,994 
201,289 
497,034 
Proceeds from disposition of assets
122,314 
38,640 
26,640 
Purchase of mortgage servicing rights
0 
(31,321)
0 
Purchases of other assets
(56,195)
(33,595)
(53,718)
Net cash provided by (used in) investing activities
(1,564,144)
42,661 
(323,338)
Cash Flows From Financing Activities:
 
 
 
Net change in demand deposits, transaction deposits and savings accounts
1,710,705 
1,919,658 
1,950,871 
Net change in time deposits
(127,026)
(257,586)
(1,407,380)
Net change in other borrowings, subsidiary bank
(941,834)
(1,487,742)
112,797 
Change in amount due on unsettled security transactions
492,946 
(51,910)
451,809 
Issuance of common and treasury stock, net
14,541 
8,552 
5,198 
Pay down of other borrowings, holding companies
(7,217)
0 
(55,150)
Net change in derivative margin accounts
(102,262)
70,340 
(162,138)
Net payments or proceeds on derivative liability contracts
15,674 
(194,831)
(535,759)
Tax benefit on exercise of stock options
659 
425 
(276)
Repurchase of common stock
(26,446)
0 
0 
Dividends paid
(76,423)
(66,557)
(63,952)
Net cash provided by (used in) financing activities
953,317 
(59,651)
296,020 
Net increase (decrease) in cash and cash equivalents
(283,039)
348,188 
226,274 
Cash and cash equivalents at beginning of period
1,269,404 
921,216 
694,942 
Cash and cash equivalents at end of period
986,365 
1,269,404 
921,216 
Cash paid for interest
122,166 
144,095 
230,841 
Cash paid for taxes
156,465 
133,551 
124,547 
Net loans and bank premises transferred to repossessed real estate
87,476 
72,845 
132,758 
Increase in U.S. government guaranteed loans eligible for repurchase
154,134 
0 
0 
Increase in Receivables from conveyance of other real estate owned guaranteed by U.S. government agencies
$ 14,501 
$ 0 
$ 0 
Consolidated Statements of Changes in Shareholders' Equity and Non-controlling Interest (USD $)
In Thousands, except Share data, unless otherwise specified
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 at Dec. 31, 2008
$ 1,860,112 
$ 4 
$ (222,886)
$ 743,411 
$ 1,427,057 
$ (101,329)
$ 1,846,257 
$ 13,855 
Balance (in shares) at Dec. 31, 2008
 
69,885 
 
 
 
2,412 
 
 
Comprehensive income:
 
 
 
 
 
 
 
 
Net income attributable to BOKF
200,578 
0 
0 
0 
200,578 
0 
200,578 
0 
Net income attributable to non-controlling interest
3,438 
0 
0 
0 
0 
0 
0 
3,438 
Other comprehensive income, net of tax
212,146 
0 
212,146 
0 
0 
0 
212,146 
0 
Comprehensive income
416,162 
 
 
 
 
 
412,724 
3,438 
Exercise of stock options
5,198 
0 
0 
9,726 
0 
(4,528)
5,198 
0 
Exercise of stock options (in shares)
 
427 
 
 
 
97 
 
 
Tax benefit on exercise of stock options
(276)
0 
0 
(276)
0 
0 
(276)
0 
Stock-based compensation
5,862 
0 
0 
5,862 
0 
0 
5,862 
0 
Cash dividends on common stock
(63,952)
0 
0 
0 
(63,952)
0 
(63,952)
0 
Capital calls and distributions, net
2,268 
0 
0 
0 
0 
0 
0 
2,268 
Balance at Dec. 31, 2009
2,225,374 
4 
(10,740)
758,723 
1,563,683 
(105,857)
2,205,813 
19,561 
Balance (in shares) at Dec. 31, 2009
 
70,312 
 
 
 
2,509 
 
 
Comprehensive income:
 
 
 
 
 
 
 
 
Net income attributable to BOKF
246,754 
0 
0 
0 
246,754 
0 
246,754 
0 
Net income attributable to non-controlling interest
1,540 
0 
0 
0 
0 
0 
0 
1,540 
Other comprehensive income, net of tax
118,579 
0 
118,579 
0 
0 
0 
118,579 
0 
Comprehensive income
366,873 
 
 
 
 
 
365,333 
1,540 
Exercise of stock options
8,552 
0 
0 
15,497 
0 
(6,945)
8,552 
0 
Exercise of stock options (in shares)
 
504 
 
 
 
99 
 
 
Tax benefit on exercise of stock options
425 
0 
0 
425 
0 
0 
425 
0 
Stock-based compensation
8,160 
0 
0 
8,160 
0 
0 
8,160 
0 
Cash dividends on common stock
(66,557)
0 
0 
0 
(66,557)
0 
(66,557)
0 
Capital calls and distributions, net
1,051 
0 
0 
0 
0 
0 
0 
1,051 
Balance at Dec. 31, 2010
2,543,878 
4 
107,839 
782,805 
1,743,880 
(112,802)
2,521,726 
22,152 
Balance (in shares) at Dec. 31, 2010
 
70,816 
 
 
 
2,608 
 
 
Comprehensive income:
 
 
 
 
 
 
 
 
Net income attributable to BOKF
285,875 
0 
0 
0 
285,875 
0 
285,875 
0 
Net income attributable to non-controlling interest
3,949 
0 
0 
0 
0 
0 
0 
3,949 
Other comprehensive income, net of tax
21,140 
0 
21,140 
0 
0 
0 
21,140 
0 
Comprehensive income
310,964 
 
 
 
 
 
307,015 
3,949 
Treasury stock purchases
(26,446)
0 
0 
0 
0 
(26,446)
(26,446)
0 
Treasury stock purchases (in shares)
 
 
 
 
 
562 
 
 
Exercise of stock options
14,541 
0 
0 
25,957 
0 
(11,416)
14,541 
0 
Exercise of stock options (in shares)
 
717 
 
 
 
210 
 
 
Tax benefit on exercise of stock options
659 
0 
0 
659 
0 
0 
659 
0 
Stock-based compensation
9,396 
0 
0 
9,396 
0 
0 
9,396 
0 
Cash dividends on common stock
(76,423)
0 
0 
0 
(76,423)
0 
(76,423)
0 
Capital calls and distributions, net
10,083 
0 
0 
0 
0 
0 
0 
10,083 
Balance at Dec. 31, 2011
$ 2,786,652 
$ 4 
$ 128,979 
$ 818,817 
$ 1,953,332 
$ (150,664)
$ 2,750,468 
$ 36,184 
Balance (in shares) at Dec. 31, 2011
 
71,533 
 
 
 
3,380 
 
 
Significant Accounting Policies
Significant Accounting Policies
(1) Significant Accounting Policies

Basis of Presentation
 
The Consolidated Financial Statements of BOK Financial Corporation (“BOK Financial” or “the Company”) have been prepared in conformity with accounting principles generally accepted in the United States, including general practices of the banking industry. The consolidated financial statements include the accounts of BOK Financial and its subsidiaries, principally BOKF, NA (“the Bank”), BOSC, Inc. and Cavanal Hill Investment Management, Inc.  All significant intercompany transactions are eliminated in consolidation.  Certain prior year amounts have been reclassified to conform to the current year presentation.

The consolidated financial statements include the assets, liabilities, non-controlling interests and results of operations of variable interest entities (“VIEs”) when BOK Financial is determined to be the primary beneficiary.  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.  See additional discussion of variable interest entities at Note 14 following.

Nature of Operations
 
BOK Financial, through its subsidiaries, provides a wide range of financial services to commercial and industrial customers, other financial institutions and consumers.  These services include depository and cash management; lending and lease financing; mortgage banking; securities brokerage, trading and underwriting; and personal and corporate trust.

The Bank operates as Bank of Oklahoma primarily in Tulsa and Oklahoma City metropolitan areas of the state of Oklahoma and Bank of Texas primarily in the Dallas, Fort Worth and Houston metropolitan areas of the state of Texas.  In addition, the Bank does business as Bank of Albuquerque in Albuquerque, New Mexico; Colorado State Bank and Trust in Denver, Colorado; Bank of Arizona in Phoenix, Arizona and Bank of Kansas City in Kansas City, Missouri/Kansas.  The Bank also operates the TransFund electronic funds network.

Use of Estimates
 
Preparation of BOK Financial's consolidated financial statements requires management to make estimates of future economic activities, including loan collectability, prepayments and cash flows from customer accounts. These estimates are based upon current conditions and information available to management. Actual results may differ significantly from these estimates.

Acquisitions
 
Assets and liabilities acquired, including identifiable intangible assets, are recorded at fair value on the acquisition dates. Goodwill is recognized as the excess of the purchase price over the net fair value of assets acquired and liabilities assumed.  The Consolidated Statements of Earnings include the results of operations from the dates of acquisition.

Goodwill and Intangible Assets
 
Goodwill and intangible assets generally result from business combinations and are evaluated for each of BOK Financial's reporting units for impairment annually or more frequently if conditions indicate impairment. The evaluation of possible impairment of intangible assets involves significant judgment based upon short-term and long-term projections of future performance.

The fair value of BOK Financial's reporting units is estimated by the discounted future earnings method. Income growth is projected for each reporting unit and a terminal value is computed. This projected income stream is converted to current fair value by using a discount rate that reflects a rate of return required by a willing buyer.  Assumptions used to determine the fair value of the reporting units are compared to observable inputs, such as the market value of BOK Financial common stock.  However, determination of the fair value of individual reporting units requires the use of significant unobservable inputs.  There have been no changes in the techniques used to value goodwill.

Core deposit intangible assets are amortized using accelerated methods over the estimated lives of the acquired deposits.  These assets generally have a weighted average life of 5 years.  Other intangible assets are amortized using accelerated or straight-line methods, as appropriate, over the estimated benefit periods.  These periods range from 5 years to 20 years.  The net book values of core deposit intangible assets are evaluated for impairment when economic conditions indicate impairment may exist.
 
Cash Equivalents
 
Due from banks, funds sold (generally federal funds sold for one-day periods) and resell agreements (which generally mature within one to 30 days) are considered cash equivalents.

Securities
 
Securities are identified as trading, investment (held to maturity) or available for sale at the time of purchase based upon the intent of management, liquidity and capital requirements, regulatory limitations and other relevant factors. Trading securities, which are acquired for profit through resale, are carried at fair value with unrealized gains and losses included in current period earnings. Investment securities are carried at amortized cost. Amortization is computed by methods that approximate level yield and is adjusted for changes in prepayment estimates. Securities identified as available for sale are carried at fair value. Unrealized gains and losses are recorded, net of deferredincome taxes, as accumulated other comprehensive income in shareholders' equity.  Available for sale securities are separately identified as pledged to creditors if the creditor has the right to sell or re-pledge the collateral.

The purchase or sale of securities is recognized on a trade date basis. Realized gains and losses on sales of securities are based upon specific identification of the security sold.  A receivable or payable is recognized for subsequent transaction settlement. BOK Financial will periodically commit to purchase to-be-announced residential mortgage-backed securities. These commitments are carried at fair value if they are considered derivative contracts.  Investment securities may be sold or transferred to trading or available for sale classification in certain limited circumstances specified in generally accepted accounting principles.  Securities meeting certain criteria may also be transferred from the available for sale classification to the investment securities portfolio at fair value on the date of transfer.  The unrealized 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 of accretion of the discount on the transferred securities.
 
On a quarterly basis, the Company performs separate evaluations of impaired debt and equity investment and available for sale securities to determine if the decline in fair value below the amortized cost is other-than-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 and securities portfolio management.  If the Company intends to sell or it is more likely than not that it will be required to sell the impaired debt security, a charge is recognized against earnings for the entire unrealized loss.  For all impaired debt securities for which there is no intent or expected requirement to sell, the evaluation considers all available evidence to assess whether it is more likely than not that all amounts due would not be collected according to the security's contractual terms.  Any expected credit loss due to the inability to collect all amounts due according to the security's contractual terms is recognized as a charge against earning.  Any remaining unrealized loss related to other factors would be recognized in other comprehensive income, net of taxes.

For equity securities, management evaluates various factors including cause, severity and duration of the decline in value of the security and prospects for recovery, as well as the Company's intent and ability not to sell the security until the fair value exceeds amortized cost.  If an unrealized loss is determined to be other-than-temporary, a charge is recognized against earnings for the difference between the security's amortized cost and fair value.

BOK Financial has elected to carry certain non-trading securities at fair value with changes in fair value recognized in current period income.  These securities are held with the intent that gains or losses will offset changes in the fair value of mortgage servicing rights or certain derivative instruments.

Derivative Instruments
 
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.  The determination of fair value of derivative instruments considers changes in interest rates, commodity prices and foreign exchange rates.  Credit risk is also considered in determining fair value.  Deterioration in the credit rating of customers or other counterparties reduces the fair value of asset contracts.  Deterioration of our credit rating to below investment grade or the credit ratings of other counterparties could decrease the fair value of our derivative liabilities.  Changes in fair value are generally reported in income as they occur.

Derivative instruments used to manage interest rate risk consist primarily of interest rate swaps.  These contracts modify the interest income or expense of certain assets or liabilities.  Amounts receivable from or payable to counterparties are reported in interest income or expense using the accrual method.  Changes in fair value of interest rate swaps are reported in other operating revenue – gain (loss) on derivatives, net.

In certain circumstances, an interest rate swap may be designated as a fair value hedge and may qualify for hedge accounting.  In these circumstances, changes in the full fair value of the hedged asset or liability, not only changes in fair value due to changes in the benchmark interest rate, is also recognized in earnings and may partially or completely offset changes in fair value of the interest rate swap.  A fair value hedge is considered effective if the cumulative fair value adjustment of the interest rate swap is within a range of 80% to 120% of the cumulative change in the fair value of the hedged asset or liability.  Any ineffectiveness, including ineffectiveness due to credit risk or ineffectiveness created when the fixed rate of the hedged asset or liability does not match the fixed rate of the interest rate swap, is recognized in earnings and reported Gain (loss) on derivatives, net.

Interest rate swaps may be designated as cash flow hedges of variable rate assets or liabilities, or of anticipated transactions.  Changes in the fair value of interest rate swaps designated as cash flow hedges are recorded in accumulated other comprehensive income to the extent they are effective.  The amount recorded in other comprehensive income is reclassified to earnings in the same periods as the hedged cash flows impact earnings.  The ineffective portion of changes in fair value is reported in current earnings.

If a derivative instrument that had been designated as a fair value hedge is terminated or if the hedge designation is removed or deemed to no longer be effective, the difference between the hedged items carrying value and its face amount is recognized into income over the remaining original hedge period.  Similarly, if a derivative instrument that had been designated as a cash flow hedge is terminated or if the hedge designation is removed or deemed to no longer be effective, the amount remaining in accumulated other comprehensive income is reclassified to earnings in the same period as the hedged item.

BOK Financial also enters into mortgage loan commitments that are considered derivative instruments.  Forward sales contracts are used to hedge these mortgage loan commitments as well as mortgage loans held for sale.  Mortgage loan commitments are carried at fair value based upon quoted prices.  Changes in fair value of the mortgage loan commitments and forward sales contracts are reported in other operating revenue – mortgage banking revenue.

BOK Financial offers programs that permit its customers to manage various risks, including fluctuations in energy, cattle and other agricultural products, interest rates and foreign exchanges rates with derivative contracts.  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.

When bilateral netting agreements 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 counterparty basis.

Derivative contracts may also 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.

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.

Performing loans may be renewed under then current collateral value, debt service ratio and other underwriting standards.   Nonperforming loans may be renewed and will remain on nonaccrual status.  Nonperforming loans renewed will be evaluated and may be charged off if the loan balance is no longer covered by the paying capacity of the borrower based on an evaluation of available cash resources and collateral value.

Interest is accrued at the applicable interest rate on the principal amount outstanding. Loans are placed on nonaccrual status when, in the opinion of management, full collection of principal or interest is uncertain.  Internally risk graded loans are individually evaluated for nonaccrual status quarterly.  Non-risk graded loans are generally placed on nonaccrual status when more than 90 days past due.  Interest previously accrued but not collected is charged against interest income when the loan is placed on nonaccrual status. Payments on nonaccrual loans are applied to principal or reported 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.

All distressed commercial and commercial real estate loans are placed on nonaccrual status.  Modification of nonaccruing loans to distressed borrowers generally consists of extension of payment terms, renewal of matured nonaccruing loans or interest rate concessions.  Principle and accrued but unpaid interest is not forgiven.  Renewed or modified nonaccruing loans are charged-off when the loan balance is no longer covered by the paying capacity of the borrower based on a quarterly evaluation of cash resources and collateral value.  Renewed or modified nonperforming loans generally remain on nonaccrual status until full collection of principal and interest in accordance with original terms, including principal previously charged off, is probable.  Consumer loans to troubled borrowers are not voluntarily modified.

Residential mortgage loans are primarily modified in accordance with U.S. government agency guidelines by reducing interest rates and extending the number of payments.  No unpaid principal or interest is forgiven.  Interest guaranteed by U.S. government agencies under residential mortgage loan programs continues to accrue based on the modified terms of the loan.  Renegotiated loans may be sold after a period of satisfactory performance.  If it becomes probable that all amounts due according to the modified loan terms will not be collected, the loan is placed on nonaccrual status and included in nonaccrual loans.

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.

Certain residential mortgage loans originated by the Company are held for sale and are carried at fair value based on sales commitments or market quotes and are reported separately in the Consolidated Balance Sheets. Changes in fair value are recorded in other operating revenue – mortgage banking revenue in the Consolidated Statements of Earnings.

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 credits 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.


Allowance for Loan Losses and Off-Balance Sheet Credit Losses

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

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 based on estimated loss rates by loan class and nonspecific allowances based on general economic, risk concentration and related factors.  There were no changes to accounting policies related to the allowance for loan loss and accrual for off-balance sheet credit losses during 2011.  Effective with the fourth quarter of 2011, the Company enhanced its methodology to include specific loss rates by loan class.  There were no other changes to the Company's methodology during 2011.

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 an evaluation of the borrowers' ability to repay.  Risk grades are updated quarterly.  Non-risk graded loans are collectively evaluated for impairment.  Certain commercial loans and most residential mortgage and consumer loans are small balance, homogeneous pools of loans that are not risk graded.

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.  This is substantially the same criteria used to determine when a loan should be placed on nonaccrual status.  All commercial and commercial real estate loans that have been modified in a troubled debt restructuring are considered to be impaired and remain classified as nonaccrual.  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 not adjusted by the Company.  Collateral value of mineral rights is generally determined by our internal staff of engineers based on projected cash flows from proven oil and gas reserves under existing economic and operating conditions.  The value of other collateral is generally determined by our special assets staff based on projected liquidation cash flows under current market conditions.  Collateral values and available cash resources that support impaired loans are evaluated quarterly.  Updated appraisals are obtained at least annually or more frequently if market conditions indicate collateral values have declined.  Historical statistics may be used in limited situations to assist in estimating future cash flows or collateral values, such as when a collateral dependent impaired loan is identified at the end of a reporting period.  Historical statistics are used as a practical way to estimate impairment 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 are subject to volatility.

General allowances for unimpaired loans are based on an estimated loss rate by loan class.  For risk graded loans, estimated loss rates are developed using historical gross loss rates, as adjusted for changes in risk grading and inherent risk identified by loan class.  Loss rates for each loan class are determined by the current loss rate based on the most recent twelve months or a long-term gross loss rate that most appropriately represents the current economic environment.  For each loan class, average risk grades for the most recent twelve month are compared to long-term average risk grades to determine if risk is increasing or decreasing.  Loss rates are accordingly adjusted upward or downward in proportion to increasing or decreasing risk.  Historical loss rates may be further adjusted for inherent risks identified for the given loan class which have not yet been captured in the actual gross loss rates or risk grading.

Nonspecific allowances are maintained for risks beyond factors specific to a particular loan or loan class.  These factors include trends in the economy in our primary lending areas, overall growth in the loan portfolio and other relevant factors.  Nonspecific allowances may also be utilized to adjust loss rates based on historical information, including consideration of the duration of the business cycle on loss rates.

An accrual for off-balance sheet credit losses is included in Other liabilities.  The appropriateness of the accrual is determined in the same manner as the allowance for loan losses.  Changes in the accrual for off-balance sheet credit losses are recognized through the provision for credit losses.

A provision for credit losses is charged against or credited to earnings in amounts necessary to maintain appropriate allowances for loan and accrual for off-balance sheet credit losses. All loans are charged off when the loan balance or a portion of the loan balance is no longer covered by the paying capacity of the borrower based on an evaluation of available cash resources and collateral value.  Internally risk graded loans are evaluated quarterly and charge-offs are taken in the quarter in which the loss is identified.  Non-risk graded loans that are past due between 60 days and 180 days, based on the loan product, are charged off. Recoveries of loans previously charged off are added to the allowance.
 
Transfers of Financial Assets
 
BOK Financial transfers financial assets as part of its mortgage banking activities and periodically may transfer other financial assets.  Transfers are recorded as sales when the criteria for surrender of control are met.  BOK Financial retains an obligation under underwriting representations and warranties related to residential mortgage loans transferred and generally retain the right to service the loans.  The Company may incur a recourse obligation in limited circumstances.  The Company may also retain a residual interest in excess cash flows generated by the assets.  All assets obtained, including cash, servicing rights and residual interests, and all liabilities incurred, including recourse obligations, are initially recognized at fair value, all assets transferred are derecognized and any gain or loss on the sale is recognized in earnings.  Subsequently, servicing rights and residual interests are carried at fair value with changes in fair value recognized

in earnings as they occur.  A separate accrual is maintained as part of Other liabilities in the Consolidated Balance Sheets for the Company's credit risk on loans transferred subject to a recourse obligation.  Other liabilities also include an accrual for obligations related to residential mortgage loans transferred under certain underwriting representations and warranties.  The Company may also retain right to reacquire certain residential mortgage previously sold to investors when certain delinquency criteria are met.  Because of this repurchase right, the Company is deemed to have regained effective control over these loans when the criteria are met and must be included in the loans and a corresponding liability in the Consolidated Balance Sheets of the Company.

Real Estate and Other Repossessed Assets
 
Real estate and other repossessed assets are assets acquired in partial or total forgiveness of loans. These assets are carried at the lower of cost, which is determined by fair value at date of foreclosure less estimated disposal costs, or current fair value less estimated disposal costs.  Decreases in fair value below cost are recognized as asset-specific valuation allowances which may be reversed when supported by future increases in fair value.  Fair values of real estate are based on “as is” appraisals which are updated at least annually or more frequently for certain asset types or assets located in certain distressed markets.  Fair values based on appraisals are generally considered to be based on significant other observable inputs.  The Company also considers decreases in listing price and other relevant information in quarterly evaluations and reduces the carrying value of real estate and other repossessed assets when necessary.  Fair values based on list prices and other relevant information are generally considered to be based on significant unobservable inputs.  Additional costs incurred to complete real estate and other repossessed assets may increase the carrying value, up to current fair value based on “as completed” appraisals.  The fair value of mineral rights included in repossessed assets are generally determined by our internal staff of engineers based on projected cash flows from proven oil and gas reserves under existing economic and operating conditions.  The value of other repossessed assets is generally determined by our special assets staff based on projected liquidation cash flows under current market conditions.  Income generated by these assets is recognized as received.  Operating expenses are recognized as incurred.  Gains or losses on sales of real estate and other repossessed assets are based on the cash proceeds received less the cost basis of the asset, net of any valuation allowances.

Premises and Equipment
 
Premises and equipment are carried at cost, including capitalized interest when appropriate, less accumulated depreciation and amortization. Depreciation and amortization are computed on a straight-line basis over the estimated useful lives of the assets or, for leasehold improvements, over the shorter of the estimated useful lives or remaining lease terms. Useful lives range from 5 years to 40 years for buildings and improvements, 3 years to 7 years for software and 3 years to 10 years for furniture and equipment.  Repair and maintenance costs are charged to expense as incurred.

Premises no longer used by the Company are transferred to real estate and other repossessed assets.  The transferred amount is the lower of cost less accumulated depreciation or fair value less estimated disposal costs as of the transfer date.

Rent expense for leased premises is recognized as incurred over the lease term.  The effects of rent holidays, significant rent escalations and other adjustments to rent payments are recognized on a straight-line basis over the lease term.
 
Mortgage Servicing Rights
 
Mortgage servicing rights may be purchased or 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.  All mortgage servicing rights are carried at fair value.  Changes in the fair value are recognized in earnings as they occur.

There is no active market for trading in mortgage servicing rights after origination.  A cash flow model is used to determine fair value.  Key assumptions and estimates, including projected prepayment speeds and assumed servicing costs, earnings on escrow deposits, ancillary income and discount rates, used by this model are based on current market sources.  Assumptions used to value mortgage servicing rights are considered significant unobservable inputs.  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.  Fair value estimates from outside sources are received at least annually to corroborate the results of the valuation model.

Federal and State Income Taxes
 
BOK Financial and its subsidiaries file consolidated tax returns.  The subsidiaries provide for income taxes on a separate return basis and remit to BOK Financial amounts determined to be currently payable.

Income tax expense is based on an effective tax rate that considers statutory federal and state income tax rates and permanent differences between income and expense recognition for financial reporting and income tax purposes.  The amount of income tax expense recognized in any period may differ from amounts reported to taxing authorities.

BOK Financial has an allowance for uncertain tax positions, which is included in accrued current income taxes payable, for the uncertain portion of recorded tax benefits and related interest.  These uncertainties result from the application of complex tax laws, rules, regulations and interpretations, primarily in state taxing jurisdictions.  The adequacy of this allowance is assessed quarterly and may be adjusted through current income tax expense in future periods based on changing facts and circumstances, completion of examinations by taxing authorities or expiration of a statute of limitations.  Estimated penalties and interest on uncertain tax positions are recognized in income tax expense.

Deferred tax assets and liabilities are determined based upon the difference between the values of the assets and liabilities as reflected in the financial statements and their related tax basis using enacted tax rates in effect for the year in which the differences are expected to be recovered or settled.  As changes in tax law or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.  A valuation allowance is provided when it is more likely than not that some portion or the entire deferred tax asset will not be realized.

Employee Benefit Plans
 
BOK Financial sponsors a defined benefit cash balance pension plan (“Pension Plan”), qualified profit sharing plan (“Thrift Plan”) and employee healthcare plans.  Pension Plan costs, which are based upon actuarial computations of current costs, are expensed annually.  Unrecognized prior service cost and net gains or losses are amortized on a straight-line basis over the lesser of the average remaining service periods of the participants or 10 years.  Employer contributions to the Pension Plan are in accordance with Federal income tax regulations.  Pension Plan benefits were curtailed as of April 1, 2006.  No participants may be added to the Pension Plan and no additional service benefits will be accrued.

BOK Financial recognizes the funded status of its employee benefit plans.  For a pension plan, the funded status is the difference between the fair value of plan assets and the projected benefit obligation measured as of the fiscal year-end date.  Adjustments required to recognize the Pension Plan's net funded status are made through accumulated other comprehensive income, net of deferred income taxes.

Employer contributions to the Thrift Plan, which matches employee contributions subject to percentage and years of service limits, are expensed when incurred.  BOK Financial recognizes the expense of health care benefits on the accrual method.

Stock Compensation Plans
 
BOK Financial awards stock options and non-vested common shares as compensation to certain officers.  Grant date fair value of stock options is based on the Black-Scholes option pricing model.  Stock options generally have graded vesting over 7 years.  Each tranche is considered a separate award for valuation and compensation cost recognition.  Grant date fair value of non-vested shares is based on the current market value of BOK Financial common stock.  Non-vested shares generally cliff vest in 5 years.

Compensation cost is recognized as expense over the service period, which is generally the vesting period.  Expense is reduced for estimated forfeitures over the vesting period and adjusted for actual forfeitures as they occur.  Stock-based compensation awarded to certain officers has performance conditions that affect the number of awards granted.  Compensation cost is adjusted based on the probable outcome of the performance conditions.  Excess tax benefits from share-based payments recognized in capital surplus are determined by the excess of tax benefits recognized over the tax effect of compensation cost recognized.

Certain executive officers may defer the recognition of income from stock-based compensation for income tax purposes and to diversify the deferred income into alternative investments.  Stock-based compensation granted to these officers is considered liability awards.  Changes in the fair value of liability awards are recognized as compensation expense in the period of the change.

Other Operating Revenue
 
Fees and commission revenue is recognized at the time the related services are provided or products are sold and may be accrued when necessary.  Accrued fees and commissions are reversed against revenue if amounts are subsequently deemed to be uncollectible.  Revenue is recognized on a gross basis whenever we have primary responsibility and risk in providing the services or products to our customers and on a net basis whenever we act as a broker for products or services of others.

Brokerage and trading revenue includes changes in the fair value of securities held for trading purposes and derivatives held for customer risk management programs, including credit losses on trading securities and derivatives, commissions earned from the retail sale of securities, mutual funds and other financial instruments, and underwriting and financial advisory fees.

Transaction card revenue includes merchant discounts fees, electronic funds transfer network fees and check card fees.  Merchant discount fees represent fees paid by customers for account management and electronic processing of transactions.  Merchant discount fees are recognized at the time the customer's transactions are processed or other services are performed.  The Company also maintains the TransFund electronic funds transfer network for the benefit of its members, which includes the Bank.  Electronic funds transfer fees are recognized as electronic transactions processed on behalf of its members.  Check card fees represent interchange fees paid by a merchant bank for transactions processed from cards issued by the Company.  Check card fees are recognized when transactions are processed.

Trust fees and commissions include revenue from asset management, custody, recordkeeping, investment advisory and administration services.  Revenue is recognized on an accrual basis at the time the services are performed and may be based on either the fair value of the account or the service provided.

Deposit service charges and fees are recognized at least quarterly in accordance with published deposit account agreement and disclosure statement for retail accounts or contractual agreement for commercial accounts.  Item charges for overdraft or non-sufficient funds items are recognized as items are presented for payment.  Account balance charges and activity fees are accrued monthly and collected in arrears. Commercial account activity fees may be offset by an earnings credit based on account balances.

Effect of Recently Issued Statements of Financial Accounting Standards

Financial Accounting Standards Board

FASB Accounting Standards Update No. 2010-06, Improving Disclosures About Fair Value Measurements (“ASU 2010-06”)

ASU 2010-06 amends Accounting Standards Codification (“ASC”) 820, Fair Value Measurements, to add new disclosure requirements about transfers into and out of Levels 1 and 2, as defined in ASC 820 and separate disclosures about purchases, sales, issuance and settlements relating to Level 3 measurements, as defined in ASC 820.  It also clarified existing fair value disclosures about the level of disaggregation and about inputs and valuation techniques used to measure fair value.  ASU 2010-06 was effective for the Company on January 1, 2010 with exception of the requirement to provide Level 3 activity of purchases, sales, issuances, and settlement on a gross basis, which were effective for the Company on January 1, 2011 and did not have a significant impact on the Company's financial statements.

FASB Accounting Standards Update No. 2010-20 Disclosures about the Credit Quality of Financing Receivables and the Allowance for Credit Losses (“ASU 2010-20”)

On July 21, 2010, the FASB issued ASU 2010-20 which expanded the disclosure requirements concerning the credit quality of an entity's financing receivables and its allowance for credit losses.  ASU 2010-20 was effective for the Company as of December 31, 2010 as it relates to disclosures required as of the end of the reporting period.  Disclosure related to activity during the reporting period were effective for the Company January 1, 2011 except for troubled debt restructuring as discussed below.

FASB Accounting Standards Update No. 2010-28 Intangibles – Goodwill and Other (Topic 530): When to Perform Step 2 of the Goodwill Impairment Test for Reporting Units with Zero or Negative Carrying Amounts (“ASU 2010-28”)

On December 17, 2010, the FASB issued ASU 2010-28, a consensus of the FASB Emerging Issues Task Force.  ASU 2010-28 modifies Step 1 of the goodwill impairment test for reporting units with zero or negative carrying amounts.  For those reporting units, an entity is required to perform a Step 2 of the goodwill impairment test if it is more likely than not that a goodwill impairment exists and the entity will no longer be able to assert that a reporting unit is not required to perform a Step 2 because the carrying amount of the reporting unit is zero or negative.   The amendment was effective for the Company January 1, 2011 and did not have a significant impact on the consolidated financial statements.

FASB Accounting Standards Update No. 2011-02, Receivables (Topic 310): A Creditor's Determination of Whether a Restructuring Is a Troubled Debt Restructuring (“ASU 2011-02”)
 
On April 5, 2011, the FASB issued ASU 2011-02 to provide additional guidance or clarification to help creditors in determining whether a creditor has granted a concession and whether a debtor is experiencing financial difficulties for the purposes of determining whether a restructuring constitutes a troubled debt restructuring.  ASU 2011-02 was effective for the Company on July 1, 2011.  In addition, the disclosure required by ASU 2010-20 that were temporarily deferred by FASB Accounting Standards Update No. 2011-01, Receivables (Topic 310): Deferral of the Effective Date of Disclosures about Troubled Debt Restructuring in Update No. 2010-20 are included in Note 4 for the period beginning July 1, 2011, as required.  ASU 2011-02 did not have a material impact on the Company's consolidated financial statements.
 
FASB Accounting Standards Update No. 2011-03, Reconsideration of Effective Control for Repurchase Agreements (“ASU 2011-03”)
 
On April 29, 2011, the FASB issued ASU 2011-03 that eliminates the collateral maintenance requirement under GAAP for entities to consider in determining whether a transfer of financial assets subject to repurchase agreements is accounted for as a sale or as a secured borrowing.  ASU 2011-03 was effective for the Company on January 1, 2012 and it did not have a material impact on the Company's consolidated financial statements.
 
FASB Accounting Standards Update No. 2011-04, Fair value Measurements (Topic 820): Amendment to Achieve Common Fair Value Measurements and Disclosure Requirements in U.S. GAAP and IFRSs (“ASU 2011-04”)
 
On May 12, 2011, the FASB issued ASU 2011-04 to provide clarified and converged guidance on fair value measurement and expanded disclosures concerning fair value measurements.  ASU 2011-04 is largely consistent with the existing fair value measurement principals contained in ASC 820, Fair Value Measurement.  ASU 2011-04 was effective for the Company on January 1, 2012 and did not have a material impact on the Company's financial statements.
 
FASB Accounting Standards Update No. 2011-05, Comprehensive Income (Topic 220):  Presentation of Comprehensive Income (“ASU 2011-05”)
 
On June 16, 2011, the FASB issued ASU 2011-05 which revises the manner in which entities present comprehensive income in their financial statements by removing the presentation option in ASC 220, Comprehensive Income, and requires entities to report components of comprehensive income in either a continuous statement of comprehensive income or two separate but consecutive statements.  ASU 2011-5 is effective for the Company for interim and annual period beginning after December 15, 2011 and will be applied retrospectively for all periods presented in the consolidated financial statements.  Early adoption is permitted, but has not been elected by the Company.
 
FASB Accounting Standards Update No. 2011-08, Testing Goodwill for Impairment (“ASU 2011-08”)
 
On September 15, 2011, the FASB issued ASU 2011-08 which amends the guidance in ASC 350-20, Intangibles – Goodwill and Other:  Goodwill, on testing goodwill for impairment.  Under the revised guidance, the Company has the option of performing a qualitative assessment before calculating the fair value of the reporting unit when testing goodwill for impairment.  If the company determines on the basis of qualitative factors that the fair value of the reporting unit is more likely than not less than the carry amount, the two-step impairment test, as defined in ASC 350-20 would be required.  ASU 2011-08 does not change the calculation or allocation of goodwill.  ASU 2011-08 does not revise the requirement to test goodwill annually for impairment or to test for goodwill impairment between annual tests if events or circumstances warrant.  However, ASU 2011-08 does revise examples of events and circumstances that an entity should consider.  ASU 2011-08 was effective for the Company on January 1, 2012.  Early adoption was permitted and the Company elected to early adopt effective October 1, 2011.  ASU 2011-08 did not have a material impact on the Company's consolidated financial statements.

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's 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 International Financial Reporting Standards by providing information about both gross and net exposures.  The new disclosure requirements are effective for interim and annual reporting periods beginning on or after January 1, 2013.

FASB Accounting Standards Update No. 2011-12, Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards No. 2011-05  (“ASU 2011-12”)
 
On December 23, 2011, FASB issued ASU 2011-12 which defers the requirement in ASU 2011-05 for presentation of reclassification adjustments for each component of accumulated other comprehensive income (“AOCI”) in both net income and other comprehensive income on the face of the financial statements.  This deferral will enable the FASB to address certain concerns raised with regards to presentation requirements for reclassification adjustments.  The amendment is effective at the same time as ASU 2011-05 which is effective for the company for interim and annual periods beginning January 1, 2012.
Securities
Securities
(2) Securities

Trading Securities

The fair value and net unrealized gain (loss) included in Trading securities is as follows (in thousands):

   
December 31, 2011
  
December 31, 2010
 
   
Fair Value
  
Net Unrealized Gain (Loss)
  
Fair Value
  
Net Unrealized Gain (Loss)
 
Obligations of the U.S. Government
 $22,203  $63  $3,873  $(17)
U.S. agency residential mortgage-backed securities
  12,379   59   27,271   292 
Municipal and other tax-exempt securities
  39,345   652   23,396   (214)
Other trading securities
  2,873   9   927   (2)
Total
 $76,800  $783  $55,467  $59 

Investment Securities

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

   
December 31, 2011
 
   
Amortized
  
Carrying
  
Fair
  
Gross Unrealized2
 
   
Cost
  
Value1
  
Value
  
Gain
  
Loss
 
                 
Municipal and other tax-exempt
 $128,697  $128,697  $133,670  $4,975  $(2)
U.S. agency residential mortgage-backed securities – Other
  110,062   121,704   120,536   602   (1,770)
Other debt securities
  188,835   188,835   208,451   19,616   – 
Total
 $427,594  $439,236  $462,657  $25,193  $(1,772)

   
December 31, 2010
 
   
Amortized
  
Fair
  
Gross Unrealized2
 
   
Cost
  
Value
  
Gain
  
Loss
 
              
Municipal and other tax-exempt
 $184,898  $188,577  $3,912  $(233)
U.S. agency residential mortgage-backed securities – Other
  –   –   –   – 
Other debt securities
  154,655   157,528   4,505   (1,632)
Total
 $339,553  $346,105  $8,417  $(1,865)
 
1
Carrying value includes $12 million of unrealized gain, net of amortization, that remains in Accumulated other comprehensive income (“AOCI”) in the Consolidated Balance Sheets at December 31, 2011 related to certain securities transferred during 2011 from the Available for Sale securities portfolio to the Investment securities portfolio.  The Company has the positive intent and ability to hold these securities to maturity.  At the time of transfer, the fair value of these securities totaled $131 million, amortized cost totaled $118 million and the pre-tax unrealized gain totaled $13 million.  No gain or loss was recognized in the Consolidated Statement of Earnings at the time of the transfer.
2
Gross unrealized gains and losses are not recognized in AOCI in the Consolidated Balance Sheets.
 

The amortized cost and fair values of investment securities at December 31, 2011, by contractual maturity, are as shown in the following table (dollars in thousands):

                  
Weighted
 
   
Less than
  
One to
  
Six to
  
Over
     
Average
 
   
One Year
  
Five Years
  
Ten Years
  
Ten Years
  
Total
  
Maturity²
 
                    
Municipal and other tax-exempt:
                  
Amortized cost
 $34,623  $68,029  $21,848  $4,197  $128,697   2.98 
Fair value
  34,942   70,682   23,570   4,476   133,670     
Nominal yield¹
  4.59   4.62   5.50   6.54   4.83     
Other debt securities:
                        
Amortized cost
 $8,651  $28,713  $34,784  $116,687  $188,835   10.00 
Fair value
  8,660   29,546   36,962   133,283   208,451     
Nominal yield
  3.78   5.56   5.58   6.20   5.88     
Total fixed maturity securities:
                        
Amortized cost
 $43,274  $96,742  $56,632  $120,884  $317,532   7.16 
Fair value
  46,602   100,228   60,532   137,759   342,121     
Nominal yield
  4.43   4.90   5.55   6.21   5.45     
Residential mortgage-backed securities:
                        
Carrying value
                 $121,704    3
Fair value
                  120,536     
Nominal yield4
                  2.17     
Total investment securities:
                        
Carrying value
                 $439,236     
Fair value
                  462,657     
Nominal yield
                  4.54     
 
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 2.1 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 Annual and Quarterly Financial Summary – Unaudited following for disclosure of current yields on investment securities portfolio.
 
 
Available for Sale Securities

The amortized cost and fair value of available for sale securities are as follows (in thousands):
   
December 31, 2011
 
   
Amortized
  
Fair
  
Gross Unrealized¹
    
   
Cost
  
Value
  
Gain
  
Loss
  
OTTI²
 
                 
U.S. Treasury
 $1,001  $1,006  $5  $–  $– 
Municipal and other tax-exempt
  66,435   68,837   2,543   (141)  – 
Residential mortgage-backed securities:
                 
U. S. agencies:
                    
FNMA
  5,823,972   5,987,287   163,319   (4)  – 
FHLMC
  2,756,180   2,846,215   90,035   –   – 
GNMA
  647,569   678,924   31,358   (3)  – 
Other
  69,668   75,751   6,083   –   – 
Total U.S. agencies
  9,297,389   9,588,177   290,795   (7)  – 
Privately issued:
                    
Alt-A loans
  168,461   132,242   –   –   (36,219)
Jumbo-A loans
  334,607   286,924   –   (11,096)  (36,587)
Total privately issued
  503,068   419,166   –   (11,096)  (72,806)
Total residential mortgage-backed securities
  9,800,457   10,007,343   290,795   (11,103)  (72,806)
Other debt securities
  36,298   36,495   197   –   – 
Perpetual preferred stock
  19,171   18,446   1,030   (1,755)  – 
Equity securities and mutual funds
  33,843   47,238   13,727   (332)  – 
Total
 $9,957,205  $10,179,365  $308,297  $(13,331) $(72,806)
¹
Gross unrealized gain/loss recognized 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, 2010
 
   
Amortized
  
Fair
  
Gross Unrealized¹
    
   
Cost
  
Value
  
Gain
  
Loss
  
OTTI²
 
                 
Municipal and other tax-exempt
 $72,190  $72,942  $1,172  $(315) $(105)
Residential mortgage-backed securities:
                 
U. S. agencies:
                    
FNMA
  4,791,438   4,925,693   147,024   (12,769)  – 
FHLMC
  2,545,208   2,620,066   83,341   (8,483)  – 
GNMA
  765,046   801,993   37,193   (246)  – 
Other
  92,013   99,157   7,144   –   – 
Total U.S. agencies
  8,193,705   8,446,909   274,702   (21,498)  – 
Privately issued:
                    
Alt-A loans
  220,332   186,674   –   (353)  (33,305)
Jumbo-A loans
  494,098   457,535   923   (14,067)  (23,419)
Total privately issued
  714,430   644,209   923   (14,420)  (56,724)
Total residential mortgage-backed securities
  8,908,135   9,091,118   275,625   (35,918)  (56,724)
Other debt securities
  6,401   6,401   –   –   – 
Perpetual preferred stock
  19,511   22,114   2,603   –   – 
Equity securities and mutual funds
  29,181   43,046   14,192   (327)  – 
Total
 $9,035,418  $9,235,621  $293,592  $(36,560) $(56,829)
¹
Gross unrealized gain/loss recognized 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 December 31, 2011, by contractual maturity, are as shown in the following table (dollars in thousands):

                  
Weighted
 
   
Less than
  
One to
  
Six to
  
Over
     
Average
 
   
One Year
  
Five Years
  
Ten Years
  
Ten Years6
  
Total
  
Maturity5
 
U.S. Treasury:
                  
Amortized cost
 $–  $1,001  $–  $–  $1,001   1.37 
Fair value
  –   1,006   –   –   1,006     
Nominal yield¹
  –   0.55   –   –   0.55     
Municipal and other tax-exempt:
                        
Amortized cost
 $1,009  $8,454  $11,357  $45,615  $66,435   18.98 
Fair value
  1,021   9,238   12,812   45,766   68,837     
Nominal yield¹
  4.04   4.16   4.00   2.69   3.12     
Other debt securities:
                        
Amortized cost
 $–  $30,398  $–  $5,900  $36,298   7.68 
Fair value
  –   30,595   –   5,900   36,495     
Nominal yield¹
  –   1.81   –   1.87   1.82     
Total fixed maturity securities:
                        
Amortized cost
 $1,009  $39,853  $11,357  $51,515  $103,734   14.86 
Fair value
  1,021   40,839   12,812   51,666   106,338     
Nominal yield
  4.04   2.27   4.00   2.60   2.64     
Residential mortgage-backed securities:
                        
Amortized cost
                 $9,800,457   ² 
Fair value
                  10,007,343     
Nominal yield4
                  3.33     
Equity securities and mutual funds:
                        
Amortized cost
                 $53,014   ³ 
Fair value
                  65,684     
Nominal yield
                  0.74     
Total available-for-sale securities:
                        
Amortized cost
                 $9,957,205     
Fair value
                  10,179,365     
Nominal yield
                  3.31     

¹
Calculated on a taxable equivalent basis using a 39% effective tax rate.
²
The average expected lives of residential mortgage-backed securities were 2.1 years based upon current prepayment assumptions.
³
Primarily restricted common stock of U.S. government agencies and preferred stock of corporate issuers with no stated maturity.
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 Annual and Quarterly Financial Summary – Unaudited following for disclosure of 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):

   
Year ended December 31,
 
   
2011
  
2010
  
2009
 
           
Proceeds
 $2,725,760  $2,013,620  $3,242,282 
Gross realized gains
  41,284   26,007   60,710 
Gross realized losses
  7,140   4,125   1,390 
Related federal and state income tax expense
  13,282   8,512   23,075 

In addition to securities that have been reclassified as pledged to creditors, securities with an amortized cost of $4.4 billion and $5.3 billion at December 31, 2011 and 2010, respectively, have been pledged as collateral for repurchase agreements, public and trust funds on deposit and for other purposes, as required by law. The secured parties do not have the right to sell or re-pledge these securities.


Temporarily Impaired Securities as of December 31, 2011
(In thousands)
   
Number
  
Less Than 12 Months
  
12 Months or Longer
  
Total
 
   
of
  
Fair
  
Unrealized
  
Fair
  
Unrealized
  
Fair
  
Unrealized
 
   
Securities
  
Value
  
Loss
  
Value
  
Loss
  
Value
  
Loss
 
Investment:
                     
Municipal and other tax-exempt
  1  $479  $2  $–  $–  $479  $2 
U.S. agency residential mortgage-backed securities – Other
  5   92,571   1,770   –   –   92,571   1,770 
Total investment
  6   93,050   1,772   –   –   93,050   1,772 
                              
Available for sale:
                            
Municipal and other tax-exempt
  26   5,008   7   21,659   134   26,667   141 
Residential mortgage-backed securities:
                            
U. S. agencies:
                            
 FNMA
  2   68,657   4   –   –   68,657   4 
GNMA
  1   2,072   3   –   –   2,072   3 
Total U.S. agencies
  3   70,729   7   –   –   70,729   7 
Privately issued1:
                            
Alt-A loans
  19   –   –   132,242   36,219   132,242   36,219 
Jumbo-A loans
  48   8,142   842   278,781   46,841   286,923   47,683 
Total privately issued
  67   8,142   842   411,023   83,060   419,165   83,902 
Total residential mortgage-backed securities
  70   78,871   849   411,023   83,060   489,894   83,909 
Perpetual preferred stocks
  6   11,147   1,755   –   –   11,147   1,755 
Equity securities and mutual funds
  7   221   5   2,551   327   2,772   332 
Total available for sale
  109  $95,247  $2,616  $435,233  $83,521  $530,480  $86,137 
 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
  19  $–  $–  $132,242  $36,219  $132,242  $36,219 
Jumbo-A loans
  36   3,809   256   202,874   36,331   206,683   36,587 


Temporarily Impaired Securities as of December 31, 2010
(In thousands)
   
Number
  
Less Than 12 Months
  
12 Months or Longer
  
Total
 
   
of
  
Fair
  
Unrealized
  
Fair
  
Unrealized
  
Fair
  
Unrealized
 
   
Securities
  
Value
  
Loss
  
Value
  
Loss
  
Value
  
Loss
 
Investment:
                     
Municipal and other tax- exempt
  37  $12,482  $211  $786  $22  $13,268  $233 
Other
  15   80,698   1,632   –   –   80,698   1,632 
Total investment
  52   93,180   1,843   786   22   93,966   1,865 
                              
Available for sale:
                            
Municipal and other tax-exempt1
  42   22,271   171   25,235   249   47,506   420 
Residential mortgage-backed securities:
                            
U. S. agencies:
                            
FNMA
  26   1,099,710   12,769   –   –   1,099,710   12,769 
FHLMC
  12   491,776   8,483   –   –   491,776   8,483 
GNMA
  3   5,681   246   –   –   5,681   246 
Total U.S. agencies
  41   1,597,167   21,498   –   –   1,597,167   21,498 
Privately issued1:
                            
Alt-A loans
  22   –   –   186,675   33,658   186,675   33,658 
Jumbo-A loans
  53   –   –   417,917   37,486   417,917   37,486 
Total privately issued
  75   –   –   604,592   71,144   604,592   71,144 
Total residential mortgage-backed securities
  116   1,597,167   21,498   604,592   71,144   2,201,759   92,642 
Equity securities and mutual funds
  2   –   –   2,878   327   2,878   327 
Total available for sale
  160   1,619,438   21,669   632,705   71,720   2,252,143   93,389 
¹
Includes the following securities for which an unrealized loss remains in OCI after an other-than-temporary credit loss has been recognized in income:
Municipal and other tax-exempt
  11  $10,713  $103  $–  $–  $10,713  $105 
Alt-A loans
  19   –   –   172,153   33,305   172,153   33,305 
Jumbo-A loans
  25   –   –   166,401   23,419   166,401   23,419 

 
 
On a quarterly basis, the Company performs separate evaluations of impaired debt and equity 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.  For 2011 and 2010, the Company did not intend to sell and it is more likely than not that the Company will not be required to sell impaired securities before fair value recovers to amortized cost, which may be maturity.  During 2009, the Company recognized a $1.3 million other-than-temporary charge on $91 million of impaired debt securities that it intended to sell and that were subsequently sold during that year.  At December 31, 2011 and 2010, the Company did not intend to sell and it is more-likely-than-not that the Company will not be required to sell impaired securities before fair value recovers to amortized cost, 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 December 31, 2011 or December 31, 2010.

As of December 31, 2011, 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
 
   
Amortized
  
Fair
  
Amortized
  
Fair
  
Amortized
  
Fair
  
Amortized
  
Fair
  
Amortized
  
Fair
  
Amortized
  
Fair
 
   
Cost
  
Value
  
Cost
  
Value
  
Cost
  
Value
  
Cost
  
Value
  
Cost
  
Value
  
Cost
  
Value
 
Investment:
                                    
Municipal and other  tax-exempt
 $–  $–  $50,468  $52,224  $25,892  $26,729  $–  $–  $52,337  $54,717  $128,697  $133,670 
Residential mortgage-backed securities – Other
  121,704   120,536   –   –   –   –   –   –   –   –   121,704   120,536 
Other debt securities
  –   –   180,334   199,830   600   600   –   –   7,901   8,021   188,835   208,451 
Total
 $121,704  $120,536  $230,802  $252,054  $26,492  $27,329  $–  $–  $60,238  $62,738  $439,236  $462,657 
                                                  
Available for Sale:
                                                
U.S. Treasury
 $1,001  $1,006  $–  $–  $–  $–  $–  $–  $–  $–  $1,001  $1,006 
Municipal and other tax-exempt
  –   –   40,419   42,574   11,579   11,692   13,026   13,026   1,411   1,545   66,435   68,837 
Residential mortgage-backed securities:
                                                
U. S. agencies:
                                                
FNMA
  5,823,972   5,987,287   –   –   –   –   –   –   –   –   5,823,972   5,987,287 
FHLMC
  2,756,180   2,846,215   –   –   –   –   –   –   –   –   2,756,180   2,846,215 
GNMA
  647,569   678,924   –   –   –   –   –   –   –   –   647,569   678,924 
Other
  69,668   75,751   –   –   –   –   –   –   –   –   69,668   75,751 
Total U.S. agencies
  9,297,389   9,588,177   –   –   –   –   –   –   –   –   9,297,389   9,588,177 
Privately issued:
                                                
Alt-A loans
  –   –   –   –   –   –   168,461   132,242   –   –   168,461   132,242 
Jumbo-A loans
  –   –   23,221   20,654   19,390   17,167   291,996   249,103   –   –   334,607   286,924 
Total privately issued
  –   –   23,221   20,654   19,390   17,167   460,457   381,345   –   –   503,068   419,166 
Total residential  mortgage-backed securities
  9,297,389   9,588,177   23,221   20,654   19,390   17,167   460,457   381,345    –    –   9,800,457   10,007,343 
Other debt securities
  –   –   5,900   5,900   30,398   30,595   –   –           36,298   36,495 
Perpetual preferred stock
  –   –   –   –   19,171   18,446   –   –   –   –   19,171   18,446 
Equity securities and mutual funds
  –   –   –   –   –   –   –   –   33,843   47,238   33,843   47,238 
Total
 $9,298,390  $9,589,183  $69,540  $69,128  $80,538  $77,900  $473,483  $394,371  $35,254  $48,783  $9,957,205  $10,179,365 
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 December 31, 2011, approximately $460 million of the portfolio of privately issued mortgage-backed securities (based on amortized cost after impairment charges) was rated below investment grade by at least one of the nationally-recognized rating agencies.  The aggregate unrealized loss on these securities totaled $79 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 by at least one of the nationally-recognized rating agencies was evaluated to determine if management expects 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:

·  
Unemployment rates – increasing to 9.5% over the next 12 months, dropping to 8% over the following 21 months, and holding at 8% thereafter.  At December 31, 2010, we assumed that unemployment rate would increase to 10% over the next 12 months, dropping to 8% over the following 21 months and holding at 8% thereafter.
·  
Housing price depreciation – starting with current depreciated housing prices based on information derived from the Federal Housing Finance Agency (“FHFA”) data, decreasing by an additional 8% over the next twelve months and growing at 2% per year thereafter.  At December 31, 2010, we assumed that housing prices would decrease an additional 5% over the next twelve months and hold at that level thereafter.
·  
Estimated Liquidation Costs – reflect actual historical liquidation costs observed on Jumbo and Alt-A residential mortgage loans in the securities owned by the Company.  At December 31, 2011, held constant at 25% to 30% for Jumbo-A loans and 35% to 38% for Alt-A loans of the then-current depreciated housing price at estimated foreclosure date.
·  
Discount rates – estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields.  At December 31, 2010, estimated cash flows were discounted at rates that range from 2.69% to 6.00% 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 residential 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 doubled 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 losses and the estimated credit losses on these securities was charged against other comprehensive income, net of deferred taxes.

Based upon projected decline in expected cash flows from certain private-label residential mortgage-backed securities, the Company recognized $21.9 million of credit loss impairments in earnings during 2011.  The Company recognized $26.5 million of credit loss impairment in earnings on certain private-label residential mortgage-backed securities during 2010.

A distribution of the amortized cost (after recognition of the other-than-temporary impairment) and fair value by credit rating for our private-label residential mortgage-backed securities is as follows (in thousands):

            
Credit Losses Recognized
 
            
Year ended
December 31, 2011
  
Life-to-date
 
   
Number of Securities
  
Amortized
Cost
  
Fair Value
  
Number of
Securities
  
Amount
  
Number of Securities
  
Amount
 
Alt-A loans:
                     
Below Investment Grade
  19  $168,461  $132,242   18  $8,209   19  $49,931 
                              
Jumbo-A loans:
                            
AAA – AA
  3   23,221   20,654   –   –   –   – 
A – BBB
  2   19,390   17,167   –   –   –   – 
Below Investment Grade
  43   291,996   249,103   32   13,740   36   23,623 
Total Jumbo-A loans
  48   334,607   286,924   32   13,740   36   23,623 
                              
Total
  67  $503,068  $419,166   50  $21,949   55  $73,554 



In addition to the other-than-temporary impairment charges on private-label residential mortgage-backed securities, the Company recognized $1.6 million of credit loss impairments in earnings for certain below investment grade municipal securities based on an assessment of the issuer's on-going financial difficulties and bankruptcy filing in the fourth quarter of 2011.  The Company recognized $1.0 million in impairment charges on these securities in 2010.  See additional discussion regarding the development of the fair value of the bonds in Note 18.

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 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 investment in relation to the severity and duration of the impairment and based on that evaluation has ability and intent to hold these investments until a recovery fair value.  Accordingly, all impairment of equity securities was considered temporary at December 31, 2011 and 2010.

The following represents the composition of net impairment losses recognized in earnings (in thousands):

   
Year Ended December 31,
 
   
2011
  
2010
  
2009
 
OTTI related to perpetual preferred stocks
 $–  $–  $(8,008)
OTTI related to equity securities and mutual funds
  –   (327)  – 
OTTI on debt securities due to change in intent to sell
  –   –   (1,263)
Total OTTI on debt securities not intended for sale
  (10,578)  (29,633)  (119,883)
Portion of loss recognized in (reclassified from) other comprehensive income
  (12,929)  2,151    94,741 
Net impairment losses recognized in earnings related to credit losses on debt securities not intended for sale
  (23,507)  (27,482)  (25,142)
Total impairment losses recognized in earnings
 $(23,507) $(27,809) $(34,413)

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):

   
Year Ended December 31,
 
   
2011
  
2010
 
Balance of credit-related OTTI recognized on available for sale debt securities, beginning of period
 $52,624  $25,142 
Additions for credit-related OTTI not previously recognized
  3,368   3,514 
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
  20,139   23,968 
Balance of credit-related OTTI recognized on available for sale debt securities, end of period
 $76,131  $52,624 

 
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 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):

   
December 31, 2011
  
December 31, 2010
 
   
Fair Value
  
Net Unrealized Gain (Loss)
  
Fair Value
  
Net Unrealized Gain (Loss)
 
U.S. agency residential mortgage-backed securities
 $626,109  $19,233  $428,021  $(5,641)
Corporate debt securities
  25,117   18   –   – 
Total
 $651,226  $19,251  $428,021  $(5,641)



Derivatives
Derivatives
(3) Derivatives
 
The following table summarizes the fair values of derivative contracts recorded as “derivative contracts” assets and liabilities in the balance sheet at December 31, 2011 (in thousands):
 
   
Gross Basis
  
Net Basis²
 
   
Assets
  
Liabilities
  
Assets
  
Liabilities
 
   
Notional¹
  
Fair Value
  
Notional¹
  
Fair Value
  
Fair Value
  
Fair Value
 
Customer risk management programs:
                  
Interest rate contracts3
 $10,391,244  $182,450  $10,324,244  $181,102  $149,780  $148,432 
Energy contracts
  1,554,400   158,625   1,799,367   171,050   62,945   75,370 
Agricultural contracts
  146,252   4,761   148,924   4,680   782   701 
Foreign exchange contracts
  73,153   73,153   72,928   72,928   73,153   72,928 
Equity options
  208,647   12,508   208,647   12,508   12,508   12,508 
Total customer derivatives before cash collateral
  12,373,696   431,497   12,554,110   442,268   299,168   309,939 
Less: cash collateral
  –   –   –   –   (11,690)  (73,712)
Total customer derivatives
  12,373,696   431,497   12,554,110   442,268   287,478   236,227 
                          
Interest rate risk management programs
  44,000   6,381   25,000   295   6,381   295 
Total derivative contracts
 $12,417,696  $437,878  $12,579,110  $442,563  $293,859  $236,522 
¹
Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.
²
Derivative contracts are recorded on a net basis in the balance sheet in recognition of master netting agreements that enable the Company to settle all derivative positions with a given counterparty in total and to offset the net derivative position with the related cash collateral.
3
Includes interest rate swaps used by borrowers to modify interest rate terms of their loans and to be announced residential mortgage-backed securities used by mortgage banking customers to hedge their loan production.

When bilateral netting agreements 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 counterparty basis.

Derivative contracts may also 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.  As of December 31, 2011, a decrease in credit rating from A1 to below investment grade would increase our obligation to post cash margin on existing contracts by approximately $51 million.
 
The following table summarizes the fair values of derivative contracts recorded as “derivative contracts” assets and liabilities in the balance sheet at December 31, 2010 (in thousands):
 
   
Gross Basis
  
Net Basis²
 
   
Assets
  
Liabilities
  
Assets
  
Liabilities
 
   
Notional¹
  
Fair Value
  
Notional¹
  
Fair Value
  
Fair Value
  
Fair Value
 
Customer risk management programs:
                  
Interest rate contracts3
 $11,664,409  $235,961  $11,524,077  $233,421  $141,279  $138,739 
Energy contracts
  1,914,519   188,655   2,103,923   191,075   76,746   79,166 
Agricultural contracts
  183,250   10,616   186,709   10,534   4,226   4,144 
Foreign exchange contracts
  45,014   45,014   45,014   45,014   45,014   45,014 
Equity options
  160,535   16,247   160,535   16,247   16,247   16,247 
Total customer derivatives before cash collateral
  13,967,727   496,493   14,020,258   496,291   283,512   283,310 
Less: cash collateral
  –   –   –   –   (15,017)  (68,987)
Total customer derivatives
  13,967,727   496,493   14,020,258   496,291   268,495   214,323 
                          
Interest rate risk management programs
  124,000   1,950   17,977   1,097   1,950   1,097 
Total derivative contracts
 $14,091,727  $498,443  $14,038,235  $497,388  $270,445  $215,420 
¹
Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.
²
Derivative contracts are recorded on a net basis in the balance sheet in recognition of master netting agreements that enable the Company to settle all derivative positions with a given counterparty in total and to offset the net derivative position with the related cash collateral.
3
Includes interest rate swaps used by borrowers to modify interest rate terms of their loans and to be announced residential mortgage-backed securities used by mortgage banking customers to hedge their loan production.


The following summarizes the pre-tax net gains (losses) on derivative instruments and where they are recorded in the income statement (in thousands):
   
Year ended December 31,
 
   
2011
  
2010
 
   
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
 $(854) $–  $2,784  $– 
Energy contracts
  5,262   –   7,951   – 
Agriculture contracts
  341   –   629   – 
Foreign exchange contracts
  565   –   375   – 
Equity options
  –   –   –   – 
Total customer derivatives
  5,314   –   11,739   – 
Interest rate risk management programs
  –   2,526   –   3,032 
Total derivative contracts
 $5,314  $2,526  $11,739  $3,032 

 
Net interest revenue increased $1.6 million in 2011, $4.0 million in 2010 and $13.1 million in 2009 from periodic settlements of amounts receivable or payable on interest rate swaps.

As discussed in Note 7, 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 in the Consolidated Balance Sheets.  See Note 7 for additional discussion of notional, fair value and impact on earnings of these contracts.

None of these derivative contracts have been designated as hedging instruments.
Loans and Allowances for Credit Losses
Loans
(4) Loans and Allowances for Credit Losses

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

   
December 31,
 
   
2011
  
2010
 
   
Fixed
  
Variable
  
Non-
     
Fixed
  
Variable
  
Non-
    
   
Rate
  
Rate
  
accrual
  
Total
  
Rate
  
Rate
  
accrual
  
Total
 
                          
Commercial
 $3,272,862  $3,229,781  $68,811  $6,571,454  $2,883,905  $3,011,636  $38,455  $5,933,996 
Commercial real estate
  887,923   1,292,793   99,193   2,279,909   829,836   1,297,148   150,366   2,277,350 
Residential mortgage
  992,556   948,138   29,767   1,970,461   851,048   939,774   37,426   1,828,248 
Consumer
  241,955   202,449   3,515   447,919   369,364   229,511   4,567   603,442 
Total
 $5,395,296  $5,673,161  $201,286  $11,269,743  $4,934,153  $5,478,069  $230,814  $10,643,036 
Accruing loans past due (90 days)1
             $2,496              $7,966 
Foregone interest on nonaccrual loans
             $11,726              $16,818 
1  
Excludes residential mortgage loans guaranteed by agencies of the U.S. government

At December 31, 2011, $5.0 billion or 44% of the total loan portfolio was to businesses and individuals in Oklahoma and $3.4 billion or 31% of our total loan portfolio was to businesses and individuals in Texas.  This geographic concentration subjects the loan portfolio to the general economic conditions within this area.  At December 31, 2010, $4.9 billion or 46% of the total loan portfolio was to businesses and individuals in Oklahoma and $3.0 billion or 28% of our total loan portfolio was to businesses and individuals in Texas.

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 December 31, 2011, commercial loans to businesses in Oklahoma totaled $2.7 billion or 41% of the commercial loan portfolio and loans to businesses in Texas totaled $2.2 billion or 34% of the commercial loan portfolio segment.  The commercial loan portfolio segment is further divided into loan classes.  The energy loan class totaled $2.0 billion or 18% of total loans at December 31, 2011, including $1.7 billion of outstanding loans to energy producers.  Approximately 51% of the committed production loans are secured by properties


primarily producing oil and 47% are secured by properties primarily producing natural gas.  The services loan class totaled $1.7 billion at December 31, 2011.  Approximately $993 million of loans in the services category consisted of loans with individual balances of less than $10 million.  Businesses included in the service class include community foundations, communications, education, gaming and transportation.

At December 31, 2010 commercial loans to business in Oklahoma totaled $2.6 billion or 43% of the commercial portfolio and commercial loans to businesses in Texas totaled $1.9 billion or 32% of our commercial loan portfolio.  The energy loan class totaled $1.7 billion and the services loan class totaled $1.6 billion.  Approximately $1.0 billion of loans in the services category consisted of loans with individual balances of less than $10 million.

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 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 December 31, 2011, 36% of commercial real estate loans were secured by properties in the Dallas, Fort Worth and Houston metropolitan areas of Texas and 26% of commercial real estate loans were secured by properties located primarily in the Tulsa and Oklahoma City metropolitan areas of Oklahoma.  At December 31, 2010, 32% of commercial real estate loans were secured by properties located in Oklahoma and 30% of commercial real estate loans wee secured by properties located in Texas.

Residential Mortgage and Consumer

Residential mortgage loans provide funds for our customer 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, with exception 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 December 31, 2011 and 2010, residential mortgage loans included $185 million and $72 million, respectively, of loans guaranteed by agencies of the U.S. government previously sold into Ginnie Mae (“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 $635 million at December 31, 2011 and $553 million at December 31, 2010.  Approximately 66% of the home equity loan portfolio is comprised of junior lien loans and 34% of the home equity loan portfolio is comprised of first lien loans.  Substantially all of the increase in total outstanding home equity loan balance is from the first lien product.  These loans generally result from refinancing of existing loans at terms of 15 years or less.  Junior lien loans are distributed 78% to amortizing term loans and 22% 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.

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 December 31, 2011, outstanding commitments totaled $6.1 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 December 31, 2011, outstanding standby letters of credit totaled $37 million.  Commercial letters of credit are used to facilitate customer trade transactions with the drafts being drawn when the underlying transaction is consummated. At December 31, 2011, outstanding commercial letters of credit totaled $7.4 million.

Allowances for Credit Losses

BOK Financial maintains separate allowances for loan losses and for off-balance sheet credit risk related to commitments to extend credit and standby letters of credit.  As discussed in greater detail in Note 7, the Company also has separate accruals related to off-balance sheet credit risk related to residential mortgage loans sold with full or partial recourse and for residential mortgage loans sold to government sponsored agencies under standard representation and warranties.

The allowance for loan losses is assessed by management on a quarterly basis and consists of specific amounts attributed to impaired loans that have not been charged down to amounts we expect to recover, general allowances based on loss rates by loan class for unimpaired loans and non-specific allowances based on general economic conditions and related factors.  Impairment is individually measured for certain impaired loans and collectively measured for all other loans.  The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment measurement method at December 31, 2011 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
 $6,502,695  $81,907  $68,759  $1,536  $6,571,454  $83,443 
Commercial real estate
  2,180,716   63,092   99,193   3,942   2,279,909   67,034 
Residential mortgage
  1,963,020   38,909   7,441   298   1,970,461   39,207 
Consumer
  446,823   17,447   1,096   –   447,919   17,447 
Total
  11,093,254   201,355   176,489   5,776   11,269,743   207,131 
                          
Nonspecific allowance
  –   –   –   –   –   46,350 
                          
Total
 $11,093,254  $201,355  $176,489  $5,776  $11,269,743  $253,481 

The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment measurement method at December 31, 2010 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
 $5,895,674  $102,565  $38,322  $2,066  $5,933,996  $104,631 
Commercial real estate
  2,126,984   94,502   150,366   4,207   2,277,350   98,709 
Residential mortgage
  1,816,184   49,500   12,064   781   1,828,248   50,281 
Consumer
  601,691   12,536   1,751   78   603,442   12,614 
Total
  10,440,533   259,103   202,503   7,132   10,643,036   266,235 
                          
Nonspecific allowance
  –   –   –   –   –   26,736 
                          
Total
 $10,440,533  $259,103  $202,503  $7,132  $10,643,036  $292,971 



The activity in the combined allowance for loan losses and off-balance sheet credit losses related to loan commitments and standby letters of credit by portfolio segments for the year ended December 31, 2011 is summarized as follows (in thousands):

   
Commercial
  
Commercial Real Estate
  
Residential Mortgage
  
Consumer
  
Nonspecific allowance
  
Total
 
                    
Allowance for loans losses:
                  
Beginning balance
 $104,631  $98,709  $50,281  $12,614  $26,736  $292,971 
Provision for (reduction of) allowance for loan losses
  (13,830)  (18,482)  699   10,959   19,614   (1,040)
Loans charged off
  (14,836)  (15,973)  (14,107)  (11,884)  –   (56,800)
Recoveries
  7,478   2,780   2,334   5,758   –   18,350 
Ending balance
 $83,443  $67,034  $39,207  $17,447  $46,350  $253,481 
Allowance for off-balance sheet credit losses:
                        
Beginning balance
 $13,456  $443  $131  $241  $–  $14,271 
Provision for (reduction of) allowance for off-balance sheet credit losses
  (5,550)  807   (40)  (227)  –   (5,010)
Ending balance
 $7,906  $1,250  $91  $14  $–  $9,261 
                          
Combined provision for (reduction of) allowances for credit losses
 $(19,380) $(17,675) $659  $10,732  $19,614  $(6,050)

The activity in the combined allowance for loan losses and off-balance sheet credit losses related to loan commitments and standby letters of credit is summarized as follows (in thousands):

   
Year ended December 31,
 
   
2010
  
2009
 
Allowance for loans losses:
      
Beginning balance
 $292,095  $233,236 
Provision for loan losses
  105,256   196,678 
Loans charged off
  (123,988)  (148,499)
Recoveries
  19,608   10,680 
Ending balance
 $292,971  $292,095 
Allowance for loans off-balance sheet credit losses:
        
Beginning balance
 $$14,388  $15,166 
Reduction of the allowance for off-balance sheet credit losses
  (117)  (778)
Ending balance
 $14,271  $14,388 
          
Total provision for credit losses
 $105,139  $195,900 


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 December 31, 2011 is as follows (in thousands):

   
Internally Risk Graded
  
Non-Graded
  
Total
 
   
Recorded Investment
  
Related Allowance
  
Recorded Investment
  
Related Allowance
  
Recorded Investment
  
Related
Allowance
 
                    
Commercial
 $6,552,986  $82,263  $18,468  $1,180  $6,571,454  $83,443 
Commercial real estate
  2,279,909   67,034   –   –   2,279,909   67,034 
Residential mortgage
  314,475   8,262   1,655,986   30,945   1,970,461   39,207 
Consumer
  216,271   2,527   231,648   14,920   447,919   17,447 
Total
  9,363,641   160,086   1,906,102   47,045   11,269,743   207,131 
                          
Nonspecific allowance
  –   –   –   –   –   46,350 
                          
Total
 $9,363,641  $160,086  $1,906,102  $47,045  $11,269,743  $253,481 



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, 2010 is as follows (in thousands):

   
Internally Risk Graded
  
Non-Graded
  
Total
 
   
Recorded Investment
  
Related Allowance
  
Recorded Investment
  
Related Allowance
  
Recorded Investment
  
Related
Allowance
 
                    
Commercial
 $5,914,178  $102,259  $19,818  $2,372  $5,933,996  $104,631 
Commercial real estate
  2,277,350   98,709   –   –   2,277,350   98,709 
Residential mortgage
  451,874   8,356   1,376,374   41,925   1,828,248   50,281 
Consumer
  246,350   1,881   357,092   10,733   603,442   12,614 
Total
  8,889,752   211,205   1,753,284   55,030   10,643,036   266,235 
                          
Nonspecific allowance
  –   –   –   –   –   26,736 
                          
Total
 $8,889,752  $211,205  $1,753,284  $55,030  $10,643,036  $292,971 

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 guidelines.  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 nonaccrual status.  Known information does, however, cause concern as to the borrowers' continued compliance with current repayment terms.  Nonaccrual 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 December 31, 2011 by loan class and the risk grade categories (in thousands):
 
   
Internally Risk Graded
  
Non-Graded
    
   
Performing
  
Potential Problem
  
Nonaccrual
  
Performing
  
Nonaccrual
  
Total
 
                    
Commercial:
                  
Energy
 $2,013,866  $1,417  $336  $–  $–  $2,015,619 
Services
  1,696,883   31,338   16,968   –   –   1,745,189 
Wholesale/retail
  907,648   34,156   21,180   –   –   962,984 
Manufacturing
  325,393   2,390   23,051   –   –   350,834 
Healthcare
  967,581   3,414   5,486   –   –   976,481 
Integrated food services
  207,982   756   –   –   –   208,738 
Other commercial and industrial
  291,393   10   1,738   18,416   52   311,609 
Total commercial
  6,410,746   73,481   68,759   18,416   52   6,571,454 
                          
Commercial real estate:
                        
Construction and land development
  238,362   27,244   61,874   –   –   327,480 
Retail
  499,636   3,244   6,863   –   –   509,743 
Office
  382,503   12,548   11,457   –   –   406,508 
Multifamily
  356,927   8,079   3,513   –   –   368,519 
Industrial
  277,453   280   –   –   –   277,733 
Other commercial real estate
  358,597   15,843   15,486   –   –   389,926 
Total commercial real estate
  2,113,478   67,238   99,193   –   –   2,279,909 
                          
Residential mortgage:
                        
Permanent mortgage
  291,155   15,879   7,441   817,921   17,925   1,150,321 
Permanent mortgages guaranteed by U.S. government agencies
  –   –   –   184,973   –   184,973 
Home equity
  –   –   –   630,766   4,401   635,167 
Total residential mortgage
  291,155   15,879   7,441   1,633,660   22,326   1,970,461 
                          
Consumer:
                        
Indirect automobile
  –   –   –   102,955   2,194   105,149 
Other consumer
  211,226   3,949   1,096   126,274   225   342,770 
Total consumer
  211,226   3,949   1,096   229,229   2,419   447,919 
                          
Total
 $9,026,605  $160,547  $176,489  $1,881,305  $24,797  $11,269,743 

 

The following table summarizes the Company's loan portfolio at December 31, 2010 by loan class and risk grade categories (in thousands):
 
   
Internally Risk Graded
  
Non-Graded
    
   
Performing
  
Potential Problem
  
Nonaccrual
  
Performing
  
Nonaccrual
  
Total
 
                    
Commercial:
                  
Energy
 $1,704,401  $6,543  $465  $–  $–  $1,711,409 
Services
  1,531,239   30,420   19,262   –   –   1,580,921 
Wholesale/retail
  956,397   45,363   8,486   –   –   1,010,246 
Manufacturing
  319,075   4,000   2,116   –   –   325,191 
Healthcare
  801,525   4,566   3,534   –   –   809,625 
Integrated food services
  202,885   1,385   13   –   –   204,283 
Other commercial and industrial
  267,949   108   4,446   19,685   133   292,321 
Total commercial
  5,783,471   92,385   38,322   19,685   133   5,933,996 
                          
Commercial real estate:
                        
Construction and land development
  326,769   21,516   99,579   –   –   447,864 
Retail
  395,094   5,468   4,978   –   –   405,540 
Office
  420,899   16,897   19,654   –   –   457,450 
Multifamily
  355,733   6,784   6,725   –   –   369,242 
Industrial
  177,712   294   4,087   –   –   182,093 
Other commercial real estate
  390,969   8,849   15,343   –   –   415,161 
Total commercial real estate
  2,067,176   59,808   150,366   –   –   2,277,350 
                          
Residential mortgage:
                        
Permanent mortgage
  420,407   19,403   12,064   730,638   20,047   1,274,944 
Permanent mortgages guaranteed by U.S. government agencies
  –   –   –   72,385   –   72,385 
Home equity
  –   –   –   547,989   5,315   553,304 
Total residential mortgage
  420,407   19,403   12,064   1,351,012   25,362   1,828,248 
                          
Consumer:
                        
Indirect automobile
  –   –   –   237,050   2,526   239,576 
Other consumer
  240,243   4,356   1,751   117,226   290   363,866 
Total consumer
  240,243   4,356   1,751   354,276   2,816   603,442 
                          
Total
 $8,511,297  $175,952  $202,503  $1,724,973  $28,311  $10,643,036 



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.

A summary of internally risk graded impaired loans follows (in thousands):
 
   
As of December 31, 2011
  
Year ended
 
      
Recorded Investment
     
December 31, 2011
 
   
Unpaid
Principal
Balance
  
Total
  
With No
Allowance
  
With Allowance
  
Related Allowance
  
Average
Recorded
Investment
  
Interest
Income
Recognized
 
                       
Commercial:
                     
Energy
 $336  $336  $336  $–  $–  $401  $– 
Services
  26,916   16,968   16,200   768   360   18,115   – 
Wholesale/retail
  24,432   21,180   19,702   1,478   1,102   14,833   – 
Manufacturing
  26,186   23,051   23,051   –   –   12,584   – 
Healthcare
  6,825   5,486   5,412   74   74   4,510   – 
Integrated food services
  –   –   –   –   –   7   – 
Other commercial and industrial
  9,237   1,738   1,738   –   –   3,092   – 
Total commercial
  93,932   68,759   66,439   2,320   1,536   53,542   – 
                              
Commercial real estate:
                            
Construction and land development
  98,053   61,874   56,740   5,134   1,777   80,727   – 
Retail
  8,645   6,863   4,373   2,490   1,062   5,921   – 
Office
  14,588   11,457   9,567   1,890   291   15,556   – 
Multifamily
  3,512   3,513   3,513   –   –   5,119   – 
Industrial
  –   –   –   –   –   2,044   – 
Other real estate loans
  16,702   15,486   7,887   7,599   812   15,415   – 
Total commercial real estate
  141,500   99,193   82,080   17,113   3,942   124,782   – 
                              
Residential mortgage:
                            
Permanent mortgage
  8,697   7,441   4,980   2,461   298   9,753   – 
Home equity
  –   –   –   –   –   –   – 
Total residential mortgage
  8,697   7,441   4,980   2,461   298   9,753   – 
                              
Consumer:
                            
Indirect automobile
  –   –   –   –   –   –   – 
Other consumer
  1,727   1,096   1,096   –   –   1,424   – 
Total consumer
  1,727   1,096   1,096   –   –   1,424   – 
                              
Total
 $245,856  $176,489  $154,595  $21,894  $5,776  $189,501  $– 

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


A summary of internally risk graded impaired loans at December 31, 2010 follows (in thousands):

      
Recorded Investment
    
   
Unpaid
Principal
Balance
  
Total
  
With No
Allowance
  
With Allowance
  
Related Allowance
 
                 
Commercial:
               
Energy
 $559  $465  $404  $61  $60 
Services
  28,579   19,262   15,985   3,277   1,227 
Wholesale/retail
  14,717   8,486   7,562   924   684 
Manufacturing
  5,811   2,116   2,116   –   – 
Healthcare
  4,701   3,534   2,743   791   95 
Integrated food services
  172   13   13   –   – 
Other commercial and industrial
  13,007   4,446   4,446   –   – 
Total commercial
  67,546   38,322   33,269   5,053   2,066 
                      
Commercial real estate:
                    
Construction and land development
  138,922   99,579   84,959   14,620   2,428 
Retail
  6,111   4,978   1,968   3,010   514 
Office
  25,702   19,654   18,798   856   106 
Multifamily
  24,368   6,725   6,129   596   115 
Industrial
  4,087   4,087   –   4,087   723 
Other real estate loans
  17,129   15,343   13,802   1,541   321 
Total commercial real estate
  216,319   150,366   125,656   24,710   4,207 
                      
Residential mortgage:
                    
Permanent mortgage
  15,258   12,064   8,574   3,490   781 
Home equity
  –   –   –   –   – 
Total residential mortgage
  15,258   12,064   8,574   3,490   781 
                      
Consumer:
                    
Indirect automobile
  –   –   –   –   – 
Other consumer
  1,909   1,751   1,506   245   78 
Total consumer
  1,909   1,751   1,506   245   78 
                      
Total
 $301,032  $202,503  $169,005  $33,498  $7,132 


Investments in impaired loans were as follows (in thousands):

   
December 31,
 
   
2011
  
2010
  
2009
 
           
Investment in impaired loans
 $176,489  $202,503  $$316,666 
Impaired loans with specific allowance for loss
  21,894   33,498   204,076 
Specific allowance balance
  5,776   7,132   36,168 
Impaired loans with no specific allowance for loss
  154,595   169,005   112,590 
Average recorded investment in impaired loans
  189,501   262,368   327,935 

Interest income recognized on impaired loans during 2011, 2010 and 2009 was not significant.


Troubled Debt Restructurings

Troubled debt restructurings of internally risk graded impaired loans at December 31, 2011 were as follows (in thousands):

   
As of December 31, 2011
  
Amounts Charged-Off
 
   
Recorded
Investment
  
Performing
in Accordance With Modified Terms
  
Not Performing
in Accordance
With Modified Terms
  
Specific
Allowance
  
During the Year Ended December 31, 2011
 
                 
Commercial:
               
Energy
 $–  $–  $–  $–  $– 
Services
  3,529   1,907   1,622   –   301 
Wholesale/retail
  1,739   961   778   24   – 
Manufacturing
  –   –   –   –   – 
Healthcare
  –   –   –   –   – 
Integrated food services
  –   –   –   –   – 
Other commercial and industrial
  960   –   960   –   – 
Total commercial
  6,228   2,868   3,360   24   301 
                      
Commercial real estate:
                    
Construction and land development
  25,890   3,585   22,305   1,577   1,104 
Retail
  1,070   –   1,070   –   882 
Office
  2,496   1,134   1,362   215   527 
Multifamily
  –   –   –   –   – 
Industrial
  –   –   –   –   – 
Other real estate loans
  8,171   387   7,784   662   86 
Total commercial real estate
  37,627   5,106   32,521   2,454   2,599 
                      
Residential mortgage:
                    
Permanent mortgage
  4,103   1,396   2,707   282   54 
Home equity
  –   –   –   –   – 
Total residential mortgage
  4,103   1,396   2,707   282   54 
                      
Consumer:
                    
Indirect automobile
  –   –   –   –   – 
Other consumer
  168   168   –   –   – 
Total consumer
  168   168   –   –   – 
                      
Total
 $48,126  $9,538  $38,588  $2,760  $2,954 

The financial impact of troubled debt restructurings primarily consist of specific allowances for credit losses and principal amounts charged off.  Internally risk graded loans that have been modified in troubled debt restructuring generally remain classified as nonaccruing.  Other financial impacts, such as foregone interest, are not material to the financial statements.

Non-risk graded residential mortgage loans that are modified in troubled debt restructurings primarily consist of loans that are guaranteed by U.S. government agencies.  At December 31, 2011, approximately $13 million of the renegotiated residential mortgage loans are currently performing in accordance with the modified terms, $5.8 million are 30 to 89 days past due and $14 million are past due 90 days or more.  Restructured residential mortgage loans guaranteed by agencies of the U.S. government in accordance with agency guidelines represent $29 million of our $33 million portfolio of renegotiated loans.  All renegotiated loans past due 90 days or more are guaranteed by U.S. government agencies.


Nonaccrual & Past Due Loans

Past due status for all loans 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 30 to 89 days past due and accruing, loans 90 days or more past due and accruing and nonaccrual loans as of December 31, 2011 is as follows (in thousands):
 
      
Past Due
       
   
Current
  
30 to 89
Days
  
90 Days
or More
  
Nonaccrual
  
Total
 
                 
Commercial:
               
Energy
 $2,013,770  $1,065  $448  $336  $2,015,619 
Services
  1,713,426   13,608   1,187   16,968   1,745,189 
Wholesale/retail
  941,334   470   –   21,180   962,984 
Manufacturing
  327,129   654   –   23,051   350,834 
Healthcare
  969,586   1,362   47   5,486   976,481 
Integrated food services
  208,733   –   5   –   208,738 
Other commercial and industrial
  307,853   1,966   –   1,790   311,609 
Total commercial
  6,481,831   19,125   1,687   68,811   6,571,454 
                      
Commercial real estate:
                    
Construction and land development
  264,327   1,279   –   61,874   327,480 
Retail
  502,508   372   –   6,863   509,743 
Office
  394,812   239   –   11,457   406,508 
Multifamily
  364,968   38   –   3,513   368,519 
Industrial
  277,733   –   –   –   277,733 
Other real estate loans
  370,859   3,444   137   15,486   389,926 
Total commercial real estate
  2,175,207   5,372   137   99,193   2,279,909 
                      
Residential mortgage:
                    
Permanent mortgage
  1,107,095   17,259   601   25,366   1,150,321 
Permanent mortgages guaranteed by U.S. government agencies
  17,509   12,163   155,301   –   184,973 
Home equity
  627,688   3,036   42   4,401   635,167 
Total residential mortgage
  1,752,292   32,458   155,944   29,767   1,970,461 
                      
Consumer:
                    
Indirect automobile
  98,345   4,581   29   2,194   105,149 
Other consumer
  339,163   2,286   –   1,321   342,770 
Total consumer
  437,508   6,867   29   3,515   447,919 
                      
Total
 $10,846,838  $63,822  $157,797  $201,286  $11,269,743 

 


A summary of loans currently performing, loans 30 to 89 days past due and accruing, loans 90 days or more past due and accruing and nonaccrual loans as of December 31, 2010 is as follows (in thousands):
 
      
Past Due
       
   
Current
  
30 to 89
Days
  
90 Days
or More
  
Nonaccrual
  
Total
 
                 
Commercial:
               
Energy
 $1,707,466  $507  $2,971  $465  $1,711,409 
Services
  1,558,120   3,196   343   19,262   1,580,921 
Wholesale/retail
  1,001,422   315   23   8,486   1,010,246 
Manufacturing
  321,102   168   1,805   2,116   325,191 
Healthcare
  805,124   75   892   3,534   809,625 
Integrated food services
  204,199   71   –   13   204,283 
Other commercial and industrial
  287,357   111   274   4,579   292,321 
Total commercial
  5,884,790   4,443   6,308   38,455   5,933,996 
                      
Commercial real estate:
                    
Construction and land development
  344,016   3,170   1,099   99,579   447,864 
Retail
  394,445   6,117   –   4,978   405,540 
Office
  437,496   300   –   19,654   457,450 
Multifamily
  362,517   –   –   6,725   369,242 
Industrial
  177,660   346   –   4,087   182,093 
Other real estate loans
  395,320   4,301   197   15,343   415,161 
Total commercial real estate
  2,111,454   14,234   1,296   150,366   2,277,350 
                      
Residential mortgage:
                    
Permanent mortgage
  1,148,271   22,177   –   32,111   1,202,559 
Permanent mortgages guaranteed by U.S. government agencies
  10,451   4,342   57,592   –   72,385 
Home equity
  546,384   1,605   –   5,315   553,304 
Total residential mortgage
  1,705,106   28,124   57,592   37,426   1,828,248 
                      
Consumer:
                    
Indirect automobile
  225,601   11,382   67   2,526   239,576 
Other consumer
  360,603   927   295   2,041   363,866 
Total consumer
  586,204   12,309   362   4,567   603,442 
                      
Total
 $10,287,554  $59,110  $65,558  $230,814  $10,643,036 
 
Premises and Equipment
Premises and Equipment
(5) Premises and Equipment

Premises and equipment at December 31 are summarized as follows (in thousands):

   
December 31,
 
   
2011
  
2010
 
        
Land
 $73,638  $72,643 
Buildings and improvements
  232,440   226,234 
Software
  82,801   69,303 
Furniture and equipment
  141,743   133,732 
Subtotal
  530,622   501,912 
Less accumulated depreciation
  267,887   236,447 
Total
 $262,735  $265,465 

Depreciation expense of premises and equipment was $32 million, $33 million and $33 million for the years ended December 31, 2011, 2010 and 2009, respectively.


Goodwill and Intangible Assets
Goodwill and Intangible Assets
(6) Goodwill and Intangible Assets

The following table presents the original cost and accumulated amortization of intangible assets (in thousands):

   
December 31,
 
   
2011
  
2010
 
        
Core deposit premiums
 $109,417  $109,417 
Less accumulated amortization
  107,023   104,795 
Net core deposit premiums
  2,394   4,622 
          
Other identifiable intangible assets
  17,291   17,291 
Less accumulated amortization
  9,466   8,110 
Net other identifiable intangible assets
  7,825   9,181 
          
Total intangible assets, net
 $10,219  $13,803 

Expected amortization expense for intangible assets that will continue to be amortized (in thousands):

   
Core
  
Other
    
   
Deposit
  
Identifiable
    
   
Premiums
  
Intangible Assets
  
Total
 
           
2012
 $815  $1,385  $2,200 
2013
  485   1,061   1,546 
2014
  432   334   766 
2015
  392   334   726 
2016
  248   334   582 
Thereafter
  22   4,377   4,399 
   $2,394  $7,825  $10,219 

The net amortized cost of goodwill and identifiable intangible assets assigned to the Company's geographic markets as follows (in thousands):
   
December 31,
 
   
2011
  
2010
 
Core deposit premiums:
      
Texas
 $1,817  $3,408 
Colorado
  548   1,058 
Arizona
  29   156 
Total core deposit premiums
 $2,394  $4,622 
          
Other identifiable intangible assets:
        
Oklahoma
 $5,548  $6,048 
Colorado
  1,487   2,343 
Kansas/Missouri
  790   790 
Total other identifiable intangible assets
 $7,825  $9,181 
          
Goodwill:
        
Oklahoma
 $8,173  $8,173 
Texas
  240,122   240,122 
New Mexico
  15,273   15,273 
Colorado
  55,611   55,611 
Arizona
  16,422   16,422 
Total goodwill
 $335,601  $335,601 

The carrying value of goodwill by operating segment as of December 31, 2011 and 2010 is as follows (in thousands):

   
Commercial
  
Consumer
  
Wealth
Management
  
Total
 
Goodwill
 $266,728  $39,251  $29,850  $335,829 
Accumulated Impairment
  –   (228)  –   (228)
Net goodwill balance
 $266,728  $39,023  $29,850  $335,601 

The annual goodwill evaluations for 2011 and 2010 did not indicate impairment for any reporting unit.  Economic conditions did not indicate that impairment existed for any identifiable intangible assets and therefore no impairment evaluation was performed.  As a result of the annual goodwill evaluation, the Company recorded an impairment charge of $228 thousand related to the consumer banking operating segment in the Arizona market in 2009.
Mortgage Banking Activities
Mortgage Banking Activities
(7) Mortgage Banking Activities

Residential Mortgage Loan Production

The Company originates and markets 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 or market quotes.  Changes in the fair value are recorded in Other operating revenue – mortgage banking revenue in the Consolidated Statements of Earnings.  Residential mortgage loans held for sale in the Consolidated Balance Sheets also include the fair value of residential mortgage loan commitments and forward sales commitments which are considered derivative contracts that have not been designated as hedging instruments.  The volume and rate spread of mortgage loans originated for sale 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 mortgage loan to when the closed loan is sold to an investor.  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 mortgage loan 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):
 
   
December 31, 2011
  
December 31, 2010
 
   
Notional /
Unpaid Principal Balance
  
Fair Value
  
Notional / Unpaid Principal Balance
  
Fair Value
 
              
Residential mortgage loans held for sale
 $177,319  $184,816  $253,778  $254,669 
Residential mortgage loan commitments
  189,770   6,597   138,870   2,251 
Forward sales contracts
  349,447   (3,288)  396,422   6,493 
       $188,125      $263,413 

No residential mortgage loans held for sale were 90 days or more past due or considered impaired at of December 31, 2011 or 2010.  No credit losses were recognized on residential mortgage loans held for sale for the years ended December 31, 2011 and 2010.

Mortgage banking revenue was as follows (in thousands):

   
Year ended December 31,
 
   
2011
  
2010
  
2009
 
Originating and marketing revenue:
         
Residential mortgages loan held for sale
 $57,418  $45,243  $40,849 
Residential mortgage loan commitments
  4,345   1,755   (1,673)
Forward sales contracts
  (9,781)  2,440   5,786 
Total originating and marketing revenue
  51,982   49,438   44,962 
Servicing revenue
  39,661   38,162   20,018 
Total mortgage banking revenue
 $91,643  $87,600  $64,980 

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 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 and 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):

   
Dec. 31, 2011
  
Dec. 31, 2010
  
Dec. 31, 2009
 
Number of residential mortgage loans serviced for others
  95,841   96,443   61,199 
Outstanding principal balance of residential mortgage loans serviced for others
 $11,300,986  $11,194,582  $6,603,132 
Weighted average interest rate
  5.19%  5.44%  5.83%
Remaining term (in months)
  290   292   321 

Activity in capitalized mortgage servicing rights and related valuation allowance during 2009, 2010 and 2011 is as follows (in thousands):

   
Purchased
  
Originated
  
Total
 
Balance at December 31, 2008
 $6,353  $36,399  $42,752 
Additions, net
  –   39,869   39,869 
Change in fair value due to loan runoff
  (2,526)  (18,395)  (20,921)
Change in fair value due to market changes
  4,001   8,123   12,124 
Balance at December 31, 2009
 $7,828  $65,996  $73,824 
Additions, net
  31,321   27,603   58,924 
Change in fair value due to loan runoff
  (6,791)  (13,895)  (20,686)
Gain on purchase of mortgage servicing rights
  11,832   –   11,832 
Change in fair value due to market changes
  (6,290)  (1,881)  (8,171)
Balance at December 31, 2010
 $37,900  $77,823  $115,723 
Additions, net
  –   26,251   26,251 
Change in fair value due to loan runoff
  (4,699)  (10,045)  (14,744)
Change in fair value due to market changes
  (14,298)  (26,149)  (40,447)
Balance at December 31, 2011
 $18,903  $67,880  $86,783 

During the first quarter of 2010, the Company purchased the rights to service approximately 34 thousand residential mortgage loans with an outstanding principal balance of $4.2 billion.  The loans to be serviced are primarily concentrated in New Mexico and predominately held by Fannie Mae, Ginnie Mae, and Freddie Mac.  The cash purchase price was $32 million.  The acquisition date fair value of the mortgage servicing rights was approximately $43.7 million based upon independent valuation analyses which were further supported by assumptions and models the Company regularly uses to value its existing portfolio of servicing rights.  The $11.8 million difference between the purchase price and acquisition date fair value was directly attributable to the seller's distressed financial condition.

Changes in the fair value of mortgage servicing rights are included in Other Operating Expenses in the Consolidated Statement of Earnings.  Changes in fair value due to loan runoff are included in mortgage banking costs.  Changes in the 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 trading in mortgage servicing rights after origination.  Fair value is determined by discounting the projected net cash flows. Significant assumptions considered significant unobservable inputs used to determine fair value are:

   
December 31, 2011
  
December 31, 2010
 
Discount rate – risk-free rate plus a market premium
  10.34%  10.36%
Prepayment rate – based upon loan interest rate, original term and loan type
  10.88% - 49.68%  6.53% - 23.03%
Loan servicing costs – annually per loan based upon loan type
 $55 - $105  $35 - $60 
Escrow earnings rate – indexed to rates paid on deposit accounts with comparable average life
  1.21%  2.21%

The Company is exposed to interest rate risk as benchmark 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 mortgage loan-servicing portfolio, outstanding principal of loans serviced and weighted average prepayment rate by interest rate at December 31, 2011 follows (in thousands):

   
< 4.50%
   4.50% - 5.49%  5.50% - 6.49% 
> 6.49%
  
Total
                  
Fair value
 $19,911  $50,637  $12,736  $3,499  $86,783 
 
Outstanding principal of loans serviced for others
 $2,125,412  $5,227,723  $2,822,476  $1,125,375  $11,300,986 
 
Weighted average prepayment rate1
  10.88%  14.42%  39.40%  49.68%  23.50%
1  
Annual prepayment estimates based upon loan interest rate, original term and loan type
 

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 December 31, 2011, a 50 basis point increase in mortgage interest rates is expected to decrease the fair value of our mortgage servicing rights, net of economic hedge, by $740 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 $4.8 million.  In our model, changes in the value of our servicing rights due to changes in interest rates assume stable relationships between mortgage rates and prepayment speeds.  Changes in market condition can cause variation 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 December 31, 2011 follows (in thousands):

      
Past Due
    
   
Current
  
30 to 59
Days
  
60 to 89 Days
  
90 Days or More
  
Total
 
FHLMC
 $5,254,662  $56,789  $15,965  $57,076  $5,384,492 
FNMA
  1,564,151   27,623   8,786   26,871   1,627,431 
GNMA
  3,593,523   159,869   40,185   38,508   3,832,085 
Other
  425,770   14,480   3,526   13,202   456,978 
Total
 $10,838,106  $258,761  $68,462  $135,657  $11,300,986 

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 $259 million at December 31, 2011 and $289 million at December 31, 2010.  A separate accrual for these off-balance sheet commitments is included in Other liabilities in the Consolidated Balance Sheets totaling $19 million at December 31, 2011 and $17 million at December 31, 2010.  At December 31, 2011, approximately 6% of the loans sold with recourse with an outstanding principal balance of $15 million were either delinquent more than 90 days, in bankruptcy or in foreclosure and 7% with an outstanding balance of $18 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):

   
2011
  
2010
  
2009
 
Beginning balance
 $16,667  $13,781  $8,767 
Provision for recourse losses
  8,611   7,895   12,210 
Loans charged off, net
  (6,595)  (5,009)  (7,196)
Ending balance
 $18,683  $$16,667  $13,781 

The Company also has off-balance sheet credit risk for residential mortgage loans sold to government sponsored entities due to standard representations and warranties made under contractual agreements.  At December 31, 2011, the Company had unresolved deficiency requests from the agencies on 247 loans with an aggregate outstanding balance of $37 million.  At December 31, 2010 the Company had unresolved deficiency requests from the agencies on 140 loans with an aggregate outstanding balance of $22 million.  The Company repurchased 10 loans from the agencies during 2011 for $1.0 million and recognized $295 thousand in losses.  The Company provided indemnification for 10 additional loans with an unpaid principal balance of $1.1 million.  The Company repurchased 11 loans for approximately $301 thousand from the agencies during 2010, which resulted in no losses to the Company.  During 2010, the Company established an accrual for credit losses related to potential loan repurchases under representations and warranties which is included in Other liabilities in the Consolidated Balance Sheets and in Mortgage banking costs in the Consolidated Statements of Earnings.  This accrual totaled $2.2 million at December 31, 2011.
Deposits
Deposits
(8) Deposits
 
Interest expense on deposits is summarized as follows (in thousands):
 
   
2011
  
2010
  
2009
 
Transaction deposits
 $23,415  $38,886  $51,607 
Savings
  719   719   614 
Time:
            
Certificates of deposits under $100,000
  26,476   31,210    57,486 
Certificates of deposits $100,000 and over
  21,175   19,235    37,193 
Other time deposits
  17,105   16,215   17,462 
Total time
  64,756   66,660   112,141 
Total
 $88,890  $106,265  $164,362 

 
The aggregate amounts of time deposits in denominations of $100,000 or more at December 31, 2011 and 2010 were $2.1 billion and $2.2 billion, respectively.

Time deposit maturities are as follows:  2012 – $1.8 billion, 2013 – $465 million, 2014 – $112 million, 2015 – $249 million, 2016 – $323 million and $479 million thereafter.  At December 31, 2011 and 2010, the Company had $219 million and $210 million, respectively, in fixed rate, brokered certificates of deposits.  The weighted-average interest rate paid on these certificates was 3.62% in 2011 and 3.82% in 2010.

Interest expense on time deposits was reduced by $1.6 million in 2011, $4.0 million in 2010 and $11.5 million in 2009 from the net accrued settlement of interest rate swaps.

The aggregate amount of overdrawn transaction deposits that have been reclassified as loan balances was $7.5 million at December 31, 2011 and $13.5 million at December 31, 2010.
Other Borrowings
Other Borrowings
(9) Other Borrowings
 
Information relating to other borrowings is summarized as follows (dollars in thousands):

                             
   
2011
  
2010
  
2009
 
         
Maximum
        
Maximum
        
Maximum
 
         
Outstanding
        
Outstanding
        
Outstanding
 
         
At Any
        
At Any
        
At Any
 
   
Balance
  
Rate
  
Month End
  
Balance
  
Rate
  
Month End
  
Balance
  
Rate
  
Month End
 
                             
Parent Company and Other Non-Bank Subsidiaries:
                           
Revolving, unsecured line
 $–   –% $–  $–   –% $–  $–   –% $50,000 
Trust preferred debt
  –   –   8,763   7,217   6.42   7,217   7,217   6.42   12,372 
Total Parent Company and Other Non-Bank Subsidiaries
  –           7,217           7,217         
                                      
Subsidiary Bank:
                                    
Funds purchased
  1,063,318   0.07   1,706,893   1,025,018   0.11   1,465,983   1,315,133   0.14   2,002,285 
Repurchase agreements
  1,233,064   0.12   1,393,237   1,258,762   0.59   1,258,762   1,156,610   0.46   1,156,610 
Federal Home Loan Bank advances
  4,837   0.38   201,674   801,797   0.14   2,277,977   1,253,051   0.23   2,053,130 
Federal Reserve advances
  –   –   –   –   –   400,000   850,000   0.25   1,100,000 
Subordinated debentures
  398,881   5.74   398,881   398,701   5.78   398,701   398,539   5.53   398,539 
GNMA repurchase liability
  53,082   5.79   118,595   –   –   –   –   –   – 
Other
  16,566   3.23   45,366   24,564   0.46   25,326   23,089   0.22   31,577 
Total subsidiary banks
  2,769,748   1.06       3,508,842   0.95       4,996,422   0.70     
                                      
Total other borrowings
 $2,769,748   1.07%     $3,516,059   0.98%     $5,003,639   0.72%    



Aggregate annual principal repayments at December 31, 2011 are as follows (in thousands):

   
Parent
  
Subsidiary
 
   
Company
  
Bank
 
        
2012
 $–  $2,353,579 
2013
  –   1,722 
2014
  –   525 
2015
  –   525 
2016
  –   149,666 
Thereafter
  –   263,731 
Total
 $–  $2,769,748 

Funds purchased are unsecured and generally mature within one to ninety days from the transaction date. Securities repurchase agreements are recorded as secured borrowings that generally mature within ninety days and are secured by certain available for sale securities.  There was no outstanding accrued interest payable related to repurchase agreements at December 31, 2011.  Accrued interest payable related to repurchase agreements totaled $186 thousand at December 31, 2010.

Additional information relating to securities sold under agreements to repurchase and related liabilities at December 31, 2011 and 2010 is as follows (dollars in thousands):
 
   
December 31, 2011
 
   
Amortized
  
Market
  
Repurchase
  
Average
 
Security Sold/Maturity
 
Cost
  
Value
  
Liability1
  
Rate
 
 
U.S. Agency Securities:
            
Overnight1
 $1,583,958  $1,628,547  $1,231,426   0.09%
Long-term
  –   –   –   – 
Total Agency Securities
 $1,583,958  $1,628,547  $1,231,426   0.09%
     
   
December 31, 2010
 
   
Amortized
  
Market
  
Repurchase
  
Average
 
Security Sold/Maturity
 
Cost
  
Value
  
Liability1
  
Rate
 
 
U.S. Agency Securities:
                
Overnight1
 $1,357,440  $1,399,570  $1,108,769   0.25%
Long-term
  132,130   139,344   170,155   4.72 
Total Agency Securities
 $1,489,570  $1,538,914  $1,278,924   0.85%
1
BOK Financial maintains control over the securities underlying overnight repurchase agreements and generally transfers control over securities underlying longer-term dealer repurchase agreements to the respective counterparty.

Borrowings from the Federal Home Loan Banks are used for funding purposes. In accordance with policies of the Federal Home Loan Banks, BOK Financial has granted a blanket pledge of eligible assets (generally unencumbered U.S. Treasury and residential mortgage-backed securities, 1-4 family loans and multifamily loans) as collateral for these advances.  The Federal Home Loan Banks have issued letters of credit totaling $311 million to secure BOK Financial's obligations to depositors of public funds.  The unused credit available to BOK Financial at December 31, 2011 pursuant to the Federal Home Loan Bank's collateral policies is $1.6 billion.

On June 9, 2011, the Company terminated its unsecured revolving credit agreement with George B. Kaiser, its Chairman and principal shareholder.  There were no amounts outstanding under this credit agreement and no penalties or costs were paid by the Company for termination of the agreement.  The credit agreement was replaced with a $100 million senior unsecured 364 day revolving credit facility with Wells Fargo Bank, National Association, administrative agent and other commercial banks (“the Credit Facility”).  Interest on amounts outstanding under the Credit Facility is to be paid at a defined base rate minus 1.25% or LIBOR plus 1.50% based upon the Company's option.  A commitment fee equal to 0.20% shall be paid quarterly on the unused portion of the credit commitment under the Credit Facility and there are no prepayment penalties.  Any amounts outstanding at the end of the Credit Facility term shall be converted into a term loan which, except for amounts borrowed for certain acquisitions, shall be payable June 7, 2012.  The Credit Facility contains customary representations and warranties, as well as affirmative and negative covenants, including limits on the Company's ability to borrow additional funds, make investments or sell assets.  These covenants also require BOKF to maintain minimum capital levels.  No amounts were outstanding under the Credit Facility at December 31, 2011 and the Company met all of the covenants.

In 2007, the Bank issued $250 million of subordinated debt due May 15, 2017.  Interest on this debt is based upon a fixed rate of 5.75% through May 14, 2012 and on a floating rate of three-month LIBOR plus 0.69% thereafter.  The proceeds of this debt were used to fund the Worth National Bank and First United Bank acquisitions and to fund continued asset growth.

In 2005, the Bank issued $150 million of 10-year, fixed rate subordinated debt.  The cost of this subordinated debt, including issuance discounts and hedge loss is 5.56%.  The proceeds of this debt were used to repay $95 million of BOK Financial's unsecured revolving line of credit and to provide additional capital to support asset growth.  During 2006, a $150 million notional amount interest rate swap was designated as a hedge of changes in fair value of the subordinated debt due to changes in interest rates.  The Company received a fixed rate of 5.257% and paid a variable rate based on 1-month LIBOR.  This fair value hedging relationship was discontinued and the interest rate swap was terminated in April 2007.


The Company has a liability related to the repurchase of certain delinquent residential mortgage loans previously sold into GNMA mortgage pools.  Interest is payable at rates contractually due to investors.
Federal and State Income Taxes
Federal and State Income Taxes
(10) Federal and State Income Taxes

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of deferred tax assets and liabilities are as follows (in thousands):

   
December 31,
 
   
2011
  
2010
 
Deferred tax liabilities:
      
Available for sale securities mark-to-market
 $86,400  $77,700 
Depreciation
  29,400   17,400 
Mortgage servicing rights
  48,900   43,800 
Lease financing
  13,200   14,700 
Other
  18,400   13,600 
Total deferred tax liabilities
  196,300   167,200 
Deferred tax assets:
        
Stock-based compensation
  10,100   8,300 
Credit loss allowances
  102,700   116,900 
Valuation adjustments
  42,300   36,400 
Deferred book income
  9,200   12,700 
Deferred compensation
  29,500   22,300 
Book expense in excess of pension    contribution
  1,900   1,000 
Other
  38,500   27,700 
Total deferred tax assets
  234,200   225,300 
Deferred tax assets in excess of deferred tax liabilities
 $37,900  $58,100 

The significant components of the provision for income taxes attributable to continuing operations for BOK Financial are shown below (in thousands):

 
   
Year ended December 31,
 
   
2011
  
2010
  
2009
 
Current tax expense:
         
Federal
 $137,802  $132,165  $112,163 
State
  16,085   17,618   16,759 
Total current tax expense
  153,887   149,783   128,922 
Deferred tax (benefit):
            
Federal
  3,882   (24,714)  (19,835)
State
  742   (1,712)  (2,382)
Total deferred tax (benefit)
  4,624   (26,426)  (22,217)
Total income tax expense
 $158,511  $123,357  $106,705 

The reconciliations of income attributable to continuing operations computed at the U.S. federal statutory tax rates to income tax expense are as follows (in thousands):

   
Year ended December 31,
 
   
2011
  
2010
  
2009
 
Amount:
         
Federal statutory tax
 $156,917  $130,078  $108,752 
Tax exempt revenue
  (5,357)  (5,404)  (4,616)
Effect of state income taxes, net of federal benefit
  11,198   9,740   9,165 
Non-controlling interest
  (1,382)  (539)  (1,204)
Utilization of tax credits
  (2,972)  (6,317)  (1,327)
Bank-owned life insurance
  (3,879)  (4,133)  (3,424)
Reduction of tax accrual
  (1,764)  (2,245)  – 
Other, net
  5,750   2,177   (641)
Total
 $158,511  $123,357  $106,705 

Due to the favorable resolution of certain tax issues for the tax periods ended December 31, 2007and December 31, 2006, BOK Financial reduced its tax accrual by $1.8 million and $2.2 million in 2011 and 2010, respectively, which was credited against current income tax expense.



   
Year ended December 31,
 
   
2011
  
2010
  
2009
 
Percent of pretax income:
         
Federal statutory rate
  35%  35%  35%
Tax-exempt revenue
  (1)  (1)  (2)
Effect of state income taxes,  net of federal benefit
  2   3   3 
Non-controlling interest
  –   –   (1)
Utilization of tax credits
  (1)  (2)  – 
Bank-owned life insurance
  (1)  (1)  (1)
Reduction of tax accrual
  –   (1)  – 
Other
  1   –   – 
Total
  35%  33%  34%

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):

   
2011
  
2010
  
2009
 
Balance as of January 1
 $11,900  $12,300  $13,200 
Additions for tax for current year positions
  6,390   3,700   4,050 
Settlements during the period
  (2,510)  –   – 
Decreases in tax for prior year positions
  –   –   (700)
Lapses of applicable statute of limitations
  (3,550)  (4,100)  (4,250)
Balance as of December 31
 $12,230  $11,900  $12,300 

Any of the above unrecognized tax benefits, if recognized, would affect the effective tax rate.

BOK Financial recognizes interest and penalties accrued related to unrecognized tax benefits in income tax expense.  The Company recognized $1.9 million for 2011, $1.3 million for 2010 and $1.4 million for 2009, in interest and penalties.  The Company had approximately $3.4 million and $3 million for the payment of interest and penalties accrued as of December 31, 2011 and 2010, respectively.  Federal statutes remain open for federal tax returns filed in the previous three reporting periods.  Various state income tax statutes remain open for the previous three to six reporting periods.

The Internal Revenue Service is currently auditing the federal income tax return of BOK Financial for the year ended December 31, 2008.  Management does not anticipate a material impact to the financial statements as a result of the audit.
Employee Benefits
Employee Benefits
(11) Employee Benefits
 
BOK Financial sponsors a defined benefit cash balance Pension Plan for all employees who satisfy certain age and service requirements. Pension Plan benefits were curtailed as of April 1, 2006.  No participants may be added to the plan and no additional service benefits will be accrued.  Interest accrues on employees' account balances at 5.25%.

The following table presents information regarding this plan (dollars in thousands):

   
December 31,
 
   
2011
  
2010
 
Change in projected benefit obligation:
      
Projected benefit obligation at beginning of year
 $48,373  $46,581 
Interest cost
  2,157   2,257 
Actuarial loss
  2,461   1,489 
Benefits paid
  (2,778)  (1,954)
Projected benefit obligation at end of year1,2
 $50,213  $48,373 
          
Change in plan assets:
        
Plan assets at fair value at beginning of year
 $44,477  $41,689 
Actual return on plan assets
  2,160   4,742 
Benefits paid
  (2,778)  (1,954)
Plan assets at fair value at end of year
 $43,859  $44,477 
          
Funded status of the plan
 $(6,354) $(3,896)
          
Components of net periodic benefit costs:
        
Interest cost
 $2,157  $2,257 
Expected return on plan assets
  (1,957)  (2,126)
Amortization of unrecognized net loss
  3,659   2,912 
Net periodic pension cost
 $3,859  $3,043 
1
Projected benefit obligation equals accumulated benefit obligation.
2
Projected benefit obligation is based on a January 1 measurement date.

 
Weighted-average assumptions as of December 31:
 
2011
  
2010
 
Discount rate
  4.11%  4.75%
Expected return on plan assets
  5.25%  5.25%
Rate of compensation increase
  N/A   N/A 

As of December 31, 2011, expected future benefit payments related to the Pension Plan were as follows (in thousands):
 
2012
 $6,337 
2013
  3,735 
2014
  3,749 
2015
  3,813 
2016
  3,817 
2017 through 2019
  16,887 
   $38,338 

Assets of the Pension Plan consist primarily of shares in the Cavanal Hill Balanced Fund. The stated objective of this fund is to provide an attractive total return through a broadly diversified mix of equities and bonds. The typical portfolio mix is approximately 60% equities and 40% bonds. The net asset value of shares in the Cavanal Hill Funds is reported daily based on market quotations for the Fund's securities.  If market quotations are not readily available, the securities' fair values are determined by the Fund's pricing committee.  The inception-to-date return on the fund, which is used as an indicator when setting the expected return on plan assets, was 6.80%.  As of December 31, 2011, the expected return on plan assets for 2012 is 5.25%.  The maximum allowed Pension Plan contribution for 2011 was $26 million.  No minimum contribution was required for 2011.  The minimum contribution was made for 2010 and 2009.  We expect approximately $3.9 million of net pension costs currently in accumulated other comprehensive income to be recognized as net periodic pension cost in 2012.

Employee contributions to the Thrift Plan are eligible for Company matching equal to 6% of base compensation, as defined in the plan.  The Company-provided matching contribution rates range from 50% for employees with less than four years of service to 200% for employees with 15 or more years of service.  Additionally, a maximum Company-provided, non-elective annual contribution of up to $750 is made for employees whose annual base compensation is less than $40,000.  Total non-elective contributions were $933 thousand for 2011, $1.0 million for 2010 and $998 thousand in 2009.

Participants may direct investments in their accounts to a variety of options, including a BOK Financial common stock fund.  Employer contributions, which are invested in accordance with the participant's investment options, vest over five years.  Thrift Plan expenses were $15.4 million for 2011, $14.3 million for 2010 and $13.0 million for 2009.

BOK Financial also sponsors a defined benefit post-retirement employee medical plan, which pays 50 percent of annual medical insurance premiums for retirees who meet certain age and service requirements. Assets of the retiree medical plan consist primarily of shares in a cash manage­ment fund. The post-retirement medical plan is limited to current retirees and certain employees who were age 60 or older at the time the plan was frozen in 1993. The net obligation recognized under the plan was $2.2 million at December 31, 2011 and December 31, 2010. A 1% change in medical expense trends would not significantly affect the net obligation or cost of this plan.

BOK Financial offers numerous incentive compensation plans that are aligned with the Company's growth strategy.  Compensation awarded under these plans may be based on defined formulas, other performance criteria or discretionary.  Incentive compensation is designed to motivate and reinforce sales and customer service behavior in all markets.  Earnings were charged $117.8 million in 2011,
$104.0 million in 2010 and $91.2 million in 2009 for incentive compensation plans.
Stock Compensation Plans
Stock Compensation Plans
(12) Stock Compensation Plans

The shareholders and Board of Directors of BOK Financial have approved various stock-based compensation plans. An independent compensation committee of the Board of Directors determines the number of awards granted to the Chief Executive Officer and other senior executives.  Stock-based compensation is granted to other officers and employees and is approved by the independent compensation committee upon recommendation of the Chairman of the Board and the Chief Executive Officer.

These awards include stock options subject to vesting requirements and non-vested shares.  Generally, one-seventh of the options awarded vest annually and expire three years after vesting.  Additionally, stock options that vest in two years and expire 45 days after vesting have been awarded.  Non-vested shares vest five years after the grant date.  The holders of these non-vested shares may be required to retain the shares for a three-year period after vesting.

The Chief Executive Officer and other senior executives participate in an Executive Incentive Plan.  The number of options and non-vested shares may increase or decrease based upon the Company's growth in earnings per share over a three-year period compared to the median growth in earnings per share for a designated peer group of financial institutions and other individual performance factors.

On April 26, 2011 shareholders approved the BOK Financial Corporation 2011 True-up Plan.  The True-Up Plan was intended to address inequality in the Executive Incentive Plan as a result of certain peer banks that performed poorly during the most recent economic cycle.  The True-Up Plan was designed to allow for adjustment upward or downward of certain executive officers annual and long-term compensation levels based on comparable executives at peer banks with similar earnings per share performance for the years 2006 through 2013.  Compensation is determined by ranking the BOK Financial's earning per share performance to peer banks and then aligning compensation with the peer bank that most closely relates to the BOK Financial's earnings per share performance.


The following table presents stock options outstanding during 2011, 2010 and 2009 under these plans (in thousands, except for per share data):

      
Weighted-
    
      
Average
  
Aggregate
 
      
Exercise
  
Intrinsic
 
   
Number
  
Price
  
Value
 
Options outstanding at December 31, 2008
  3,575,468  $45.77  $19,200 
Options awarded
  913,880   37.24     
Options exercised
  (280,572)  33.49     
Options forfeited
  (487,793)  44.83     
Options expired
  (199,220)  51.76     
Options outstanding at December 31, 2009
  3,521,763  $44.58  $10,359 
Options awarded
  345,945   48.30     
Options exercised
  (486,280)  39.29     
Options forfeited
  (97,443)  46.89     
Options expired
  (148,651)  51.35     
Options outstanding at December 31, 2010
  3,135,334  $45.62  $24,405 
Options awarded
  185,007   55.94     
Options exercised
  (576,518)  44.35     
Options forfeited
  (60,005)  47.93     
Options expired
  (62,471)  54.13     
Options outstanding at December 31, 2011
  2,621,347  $47.01  $20,769 
              
Options vested at:
            
December 31, 2009
  903,380  $43.37  $3,745 
December 31, 2010
  805,781  $45.26  $6,556 
December 31, 2011
  825,682  $46.72  $6,779 

The following table summarizes information concerning currently outstanding and vested stock options:

Options Outstanding
  
Options Vested
 
      
Weighted
          
      
Average
  
Weighted
     
Weighted
 
Range of
     
Remaining
  
Average
     
Average
 
Exercise
  
Number
  
Contractual
  
Exercise
  
Number
  
Exercise
 
Prices
  
Outstanding
  
Life (years)
  
Price
  
Vested
  
Price
 
                 
$30.50 – 30.87   30,044   0.95  $30.79   30,044  $30.79 
 36.65   536,106   4.00   36.65   65,348   36.65 
 37.74   81,535   1.50   37.74   81,535   37.74 
 45.15 – 47.34   217,277   2.00   47.31   139,202   47.30 
 47.05 – 48.53   274,770   2.50   47.05   125,948   47.05 
 47.67   27,484   0.12   47.67   27,484   47.67 
 48.30   220,072   5.00   48.30   8,942   48.30 
 48.46   523,725   3.50   48.46   159,411   48.46 
 54.33   429,016   3.00   54.33   187,768   54.33 
 55.94   281,318   6.00   55.94   –   – 

The aggregate intrinsic value of options exercised was $5.5 million for 2011, $6.1 million for 2010 and $3.8 million for 2009.


Compensation expense for stock options is generally recognized based on the fair value of options granted over the options' vesting period.  The fair value of options was determined as of the date of grant using a Black-Scholes option pricing model with the following weighted average assumptions:

   
2011
  
2010
  
2009
 
           
Average risk-free interest rate1
  1.87%  2.36%  1.32%
Dividend yield
  1.80%  2.00%  2.50%
Volatility factors
  0.268   0.261   0.218 
Weighted average expected life
 
4.9 years
  
4.9 years
  
4.9 years
 
Weighted average fair value
 $11.92  $10.17  $5.36 
1
Average risk-free interest rate represents U.S. Treasury rates matched to the expected life of the options.

Stock option expense totaled $10.0 million for 2011, $8.3 million for 2010 and $5.9 million for 2009.  Compensation cost of stock options granted that may be recognized as compensation expense in future years totaled $4.9 million at December 31, 2011.  Subject to adjustments for forfeitures, we expect to recognize compensation expense for current outstanding options of $2.2 million in 2012, $1.3 million in 2013, $758 thousand in 2014, $394 thousand in 2015, $183 thousand in 2016 and $63 thousand thereafter.

The following represents a summary of the non-vested stock awards as of December 31, 2011 (in thousands):

   
Shares
  
Weighted
Average
Grant Date
Fair Value
 
Non-vested at January 1, 2011
  415,508    
Granted
  142,756  $55.94 
Vested
  (44,887)  55.07 
Forfeited
  (9,639)  46.84 
Non-vested at December 31, 2011
  503,738     

Unrecognized compensation cost of non-vested shares totaled $10.9 million at December 31, 2011.  Subject to adjustment for forfeitures, we expect to recognize compensation expense of $3.6 million in 2012, $3.3 million in 2013, $2.6 million in 2014 and $1.4 million in 2015 and $47 thousand in 2016.

BOK Financial permits certain executive officers to defer recognition of taxable income from their stock-based compensation. Deferred compensation may also be diversified into investments other than BOK Financial common stock.

Stock-based compensation subject to these deferral plans is recognized as a liability award rather than as an equity award.  Compensation expense is based on the fair value of the award recognized over the vesting period.  The recorded obligation for liability awards totaled $1.3 million at December 31, 2011 and $2.0 million at December 31, 2010.  Compensation cost of liability awards was an expense of $760 thousand in 2011, $1.9 million in 2010 and $1.3 million in 2009.

Based on the most recent available information, the Company recorded $9.5 million of additional compensation expense for liability awards related to the True-Up Plan during 2011.  In the present economic environment, performance measurement through 2013 may be volatile and could result in future adjustments upward or downward to compensation expense.

During January 2012, BOK Financial awarded the following stock-based compensation:

 
      
Exercise
  
Fair Value /
 
   
Number
  
Price
  
Award
 
           
Equity awards:
         
Stock options
  87,748  $58.76  $11.48 
Non-vested stock
  148,887   –   58.76 
Total equity awards
  236,635         
Total stock-based awards
  236,635         

 
The aggregate compensation cost of these awards totaled approximately $9.8 million.  This cost will be recognized over the vesting periods, subject to adjustments for forfeitures.  None of the stock-based compensation awards in January 2012 are subject to deferred compensation plans.
Related Parties
Related Parties
(13) Related Parties

In compliance with applicable regulations, the Company may extend credit to certain executive officers, directors, principal shareholders and their affiliates (collectively referred to as “related parties”) in the ordinary course of business under substantially the same terms as comparable third-party lending arrangements.  The Company's loans to related parties do not involve more than the normal credit risk and there are no nonaccrual or impaired related party loans outstanding at December 31, 2011 or 2010.  Activity in loans to related parties is summarized as follows (in thousands):

 
   
2011
  
2010
 
Beginning balance
 $168,935  $217,698 
Advances
  300,080   510,663 
Payments
  (285,909)  (544,977)
Adjustments1
  (83,766)  (14,449)
Ending balance
 $99,340  $168,935 
1
Adjustments generally consist of changes in status as a related party.

Certain related parties are customers of the Company for services other than loans, including consumer banking, corporate banking, risk management, wealth management, brokerage and trading, or fiduciary/trust services.  The Company engages in transactions with related parties in the ordinary course of business in compliance with applicable regulations.

The Company had an unsecured revolving credit agreement with George B. Kaiser, its Chairman and principal shareholder which was terminated during 2010 as more fully described in Note 9.  The Company also rents office space in facilities owned by affiliates of Mr. Kaiser.  Lease payments totaled $1.1 million for 2011, $1.1 million for 2010 and $1.0 million for 2009.

In 2008, the Company entered into a $25 million loan commitment with the Tulsa Community Foundation (“TCF”) to be secured by tax-exempt bonds purchased from the Tulsa Stadium Trust (the “Stadium Trust”) by TCF.  The Stadium Trust is an Oklahoma public trust, of which the City of Tulsa is the sole beneficiary.  Stanley A. Lybarger, President and CEO of the Company, is Chairman of the Stadium Trust.

Cavanal Hill Investment Management, Inc., a wholly-owned subsidiary of the Bank, is the administrator to and investment advisor for the Cavanal Hill Funds (the "Funds"), a diversified, open-ended investment company established as a business trust under the Investment Company Act of 1940 (the "1940 Act").  The Bank is custodian and BOSC, Inc. is distributor for the Funds.  The Funds' products are offered to customers, employee benefit plans, trusts and the general public in the ordinary course of business.  Approximately 99% of the Funds' assets of $2.9 billion are held for the Company's clients.  A Company executive officer serves on the Funds' board of trustees and officers of the Bank serve as president and secretary of the Funds.  A majority of the members of the Funds' board of trustees are, however, independent of the Company and the Funds are managed by its board of trustees.
Commitments and Contingent Liabilities
Commitments and Contingent Liabilities
(14) Commitments and Contingent Liabilities

Litigation Contingencies

BOSC, Inc. was joined as a defendant in a class action brought on behalf of unit holders of SemGroup Energy Partners, LP in the United States District Court for the Northern District of Oklahoma pursuant to Sections 11 and 12(a)(2) of the Securities Act of 1933 against all of the underwriters of issuances of partnership units.  During 2011, the action was settled and dismissed with prejudice at no material loss to BOSC.

In 2010, the Bank was named as a defendant in three putative class actions alleging that the manner in which the bank posted charges to its consumer demand deposit accounts breached an implied obligation of good faith and fair dealing and violates the Oklahoma Consumer Protection Act.  The actions also alleged that the manner in which the bank posted charges to its consumer demand deposit accounts is unconscionable, constituted conversion and unjustly enriched the bank.  Two of the actions were pending in the District Court of Tulsa County.  The third action, originally brought in the United States District Court for the Western District of Oklahoma, was transferred to Multi-District Litigation in the Southern District of Florida.  Each of the actions sought to establish a class consisting of all consumer customers of the Bank.  The actions were combined into one class action and on November 23, 2011, the Company settled the class action lawsuit for $19 million, subject to approval of the settlement by the District Court in the Multi-District Litigation.  Management was advised by counsel that, in its opinion, the Company's overdraft practices meet all requirements of law.  In the settlement, the Bank has not agreed to change its overdraft practices.  The Company chose to settle and resolve the litigation to avoid further expense and distraction.  The amount of the settlement has been fully accrued as of December 31, 2011.

The Bank was named as a defendant in an action in the Eastern District of Texas, Tyler Division, by a patent holder alleging that the check image capture processes used by the Bank infringe upon its patent.  The Bank resolved the dispute by taking a license from the plaintiff patent holder at no material cost.

In an opinion dated October 11, 2011, the Oklahoma Supreme Court invalidated, pursuant to a petition brought by certain taxpayers, a $7.1 million settlement agreement between the Bank and the City of Tulsa (“the City”).  The agreement had settled claims asserted by the Bank against the City and against the Tulsa Airports Improvement Trust related to a defaulted loan made by the Bank to a start-up airline.  The

Trust agreed to purchase the loan and its collateral from the Bank in the event of a default by the airline.  Counsel to the taxpayers has filed a motion to reconsider the opinion related to a claim by such counsel for attorney fees and the matter is still pending in the Supreme Court.  If and when a mandate is issued on the opinion without material change as is anticipated, the Company intends to return the $7.1 million to the City and pursue its claims against the Trust.  The settlement amount is included in the accrual for off-balance sheet credit risk.

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.  This contingent liability totaled $774 thousand at December 31, 2011.  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 recognized a $774 thousand receivable for its proportionate share of this escrow account.

BOK Financial currently owns 251,837 Visa Class B shares which are convertible into Visa Class A shares at the later of three years after the date of Visa's initial public offering or the final settlement of all covered litigation.  The current exchange rate is approximately 0.4881 Class A shares for each Class B share.  However, the Company's 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 currently been 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 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 either the variable interest model or voting 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.  The Funds generally invested 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 $10 million as of December 31, 2011.  Substantially all of the obligations are offset by limited partner commitments.  The Company does not accrue its contingent liability to fund investments.

Consolidated tax credit entities represent the Company's interest in entities earning federal new market tax credits related to qualifying loans for which 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 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 December 31, 2011 and 2010 follows (in thousands):
 
   
December 31, 2011
 
   
Loans
  
Other
assets
  
Other
liabilities
  
Other
borrowings
  
Non-controlling
interest
 
Consolidated:
               
Private equity funds
 $–  $30,902  $–  $–  $26,042 
Tax credit entities
  10,000   14,483   –   10,964   10,000 
Other
  –   7,206   –   –   142 
Total consolidated
 $10,000  $52,591  $–  $10,964  $36,184 
                      
Unconsolidated:
                    
Tax credit entities
 $–  $37,890  $16,084  $–  $– 
Other
  –   10,950   2,194   –   – 
Total unconsolidated
 $–  $48,840  $18,278  $–  $– 

 
   
December 31, 2010
 
   
Loans
  
Other
assets
  
Other
liabilities
  
Other
borrowings
  
Non-controlling
interest
 
Consolidated:
               
Private equity funds
 $–  $25,436  $–  $–  $21,957 
Tax credit entities
  –   –   –   –   – 
Other
  –   7,516   –   –   195 
Total consolidated
 $–  $32,952  $–  $–  $22,152 
                      
Unconsolidated:
                    
Tax credit entities
 $–  $28,580  $15,668  $–  $– 
Other
  –   9,880   2,974   –   – 
Total unconsolidated
 $–  $38,460  $18,642  $–  $– 


Other Commitments and Contingencies

At December 31, 2011 Cavanal Hill Funds' assets included $1.4 billion of U.S. Treasury, $883 million of cash management, and $343 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 December 31, 2011.  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 2011, 2010 or 2009.

Cottonwood Valley Ventures, Inc. (“CVV, Inc.”), an indirect 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. generates 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.  In the event the OTC disallows any such credits, CVV, Inc. would be required to indemnify purchasers for the tax credits disallowed.  Management does not anticipate that this audit will have a material adverse impact to the consolidated financial statements.

The Bank is obligated under a long-term lease for its bank premises owned by Williams Companies, Inc. and located in downtown Tulsa. The former Chairman and CEO of the Williams Companies, Inc. is a director of BOK Financial Corporation.  The lease term, which began November 1, 1976, is for fifty-seven years with options to terminate in 2014 and 2024. Annual base rent is $3.2 million.  The Bank subleased a portion of this space in 2009 & 2010.  Net rent expense on this lease for those years was $3.0 million.  Total rent expense for BOK Financial was $20.6 million in 2011, $21.2 million in 2010 and $21.4 million in 2009.

At December 31, 2011, future minimum lease payments for equipment and premises under operating leases were as follows:  $19.1 million in 2012, $17.8 million in 2013, $17.0 million in 2014, $16.2 million in 2015, $14.3 million in 2016 and $85.9 million thereafter.  Premises leases may include options to renew at then current market rates and may include escalation provisions based upon changes in the consumer price index or similar benchmarks.

The Federal Reserve Bank requires member banks to maintain certain minimum average cash balances. These balances were $968 million and $950 million at December 31, 2011 and 2010, respectively.

BOSC, Inc., a wholly-owned subsidiary of BOK Financial, is an introducing broker to Pershing, LLC for retail equity investment transactions.  As such, it has indemnified Pershing, LLC against losses due to a customer's failure to settle a transaction or to repay a


margin loan.  All unsettled transactions and margin loans are secured as required by applicable regulation.  The amount of customer balances subject to indemnification totaled $4.3 million at December 31, 2011.

The Company agreed to guarantee rents totaling $28.7 million through September of 2017 to the City of Tulsa (“City”) 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 $17.1 million at December 31, 2011.  Current leases expire or are subject to lessee termination options at various dates in 2012 and 2014.  Our obligation under the agreement would be affected by lessee decisions to exercise these options.  In return for this guarantee, Bank of Oklahoma will receive 80% of the net cash flow as defined in an agreement with the City 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. 
Shareholders' Equity
Shareholders' Equity
(15) Shareholders' Equity

Preferred Stock
 
One billion shares of preferred stock with a par value of $0.00005 per share are authorized.  The Series A Preferred Stock has no voting rights except as otherwise provided by Oklahoma corporate law and may be converted into one share of Common Stock for each 36 shares of Series A Preferred Stock at the option of the holder. Dividends are cumulative at an annual rate of ten percent of the $0.06 per share liquidation preference value when declared and are payable in cash. Aggregate liquidation preference is $15 million.  No Series A Preferred Stock was outstanding in 2011, 2010 or 2009.
 
Common Stock
 
Common stock consists of 2.5 billion authorized shares with a $0.00006 par value. Holders of common shares are entitled to one vote per share at the election of the Board of Directors and on any question arising at any shareholders' meeting and to receive dividends when and as declared.  Additionally, regulations restrict the ability of national banks and bank holding companies to pay dividends.
 
Subsidiary Bank
 
The amounts of dividends that BOK Financial's subsidiary bank can declare and the amounts of loans the subsidiary bank can extend to affiliates are limited by various federal banking regulations and state corporate law. Generally, dividends declared during a calendar year are limited to net profits, as defined, for the year plus retained profits for the preceding two years. The amounts of dividends are further restricted by minimum capital requirements.  Based on the most restrictive limitations as well as management's internal capital policy, at December 31, 2011, BOKF subsidiaries could declare up to $15 million of dividends without regulatory approval.  The subsidiary bank declared and paid dividends of $270 million in 2011, $280 million in 2010 and $172 million in 2009.

As defined by banking regulations, loan commitments and equity investments to a single affiliate may not exceed 10% of unimpaired capital and surplus and loan commitments and equity investments to all affiliates may not exceed 20% of unimpaired capital and surplus.   All loans to affiliates must be fully secured by eligible collateral.  At December 31, 2011, loan commitments and equity investments were limited to $241 million to a single affiliate and $481 million to all affiliates.  The largest loan commitment and equity investment to a single affiliate was $240 million and the aggregate loan commitments and equity investments to all affiliates were $323 million.  The largest outstanding amount to a single affiliate was $29 million and the total outstanding amounts to all affiliates were $50 million.  At December 31, 2010, total loan commitments and equity investments to all affiliates were $253 million.  Total outstanding amounts to all affiliates were $68 million.

Regulatory Capital

BOK Financial and the Bank are subject to various capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and additional discretionary actions by regulators that could have a material effect on BOK Financial's operations. These capital requirements include quantitative measures of assets, liabilities and certain off-balance sheet items. The capital standards are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.

For a banking institution to qualify as well capitalized, Tier I, Total and Leverage capital ratios must be at least 6%, 10% and 5%, respectively. Tier I capital consists primarily of common stockholders' equity, excluding unrealized gains or losses on available for sale securities, less goodwill, core deposit premiums and certain other intangible assets.  Total capital consists primarily of Tier I capital plus preferred stock, subordinated debt and allowances for credit losses, subject to certain limitations.  The Bank exceeded the regulatory definition of well capitalized.


A summary of regulatory capital levels as of December 31, 2011 follows (dollars in thousands):

Total Capital (to Risk Weighted Assets):
      
Consolidated
 $2,851,099   16.49%
BOKF, NA
  2,329,670   13.53 
Tier I Capital (to Risk Weighted Assets):
        
Consolidated
 $2,295,061   13.27%
BOKF, NA
  1,775,182   10.31 
Tier I Capital (to Average Assets):
        
Consolidated
 $2,295,061   9.15%
BOKF, NA
  1,775,182   7.11 

On January 1, 2011 the Company effected an affiliated merger of the Company's wholly-owned subsidiary banks, Bank of Texas, N.A., Bank of Albuquerque, N.A., Bank of Arkansas, N.A., Colorado State Bank and Trust, N.A., Bank of Arizona, N.A. and Bank of Kansas City, N.A. into Bank of Oklahoma, N.A., as approved by the Office of the Comptroller of the Currency on October 6, 2010.  The resulting subsidiary bank is name BOKF, NA.  The Bank operates as distinct geographical regions using the trade names of the former charters.  The merger allows the Company to more efficiently utilize capital.

A summary of regulatory capital levels of the former subsidiary banks as of December 31, 2010 follows (dollars in thousands):

Total Capital (to Risk Weighted Assets):
      
Consolidated
 $2,651,771   16.20%
Bank of Oklahoma
  1,528,078   13.47 
Bank of Texas
  479,682   12.26 
Bank of Albuquerque
  143,225   18.45 
Bank of Arkansas
  38,065   18.18 
Colorado State Bank and Trust
  97,592   13.76 
Bank of Arizona
  31,298   12.05 
Bank of Kansas City
  20,408   19.45 
Tier I Capital (to Risk Weighted Assets):
        
Consolidated
 $2,076,525   12.69%
Bank of Oklahoma
  1,017,458   8.97 
Bank of Texas
  430,534   11.00 
Bank of Albuquerque
  133,487   17.20 
Bank of Arkansas
  35,423   16.92 
Colorado State Bank and Trust
  88,723   12.51 
Bank of Arizona
  27,977   10.77 
Bank of Kansas City
  19,247   18.34 
Tier I Capital (to Average Assets):
        
Consolidated
 $2,076,525   8.74%
Bank of Oklahoma
  1,017,458   5.80 
Bank of Texas
  430,534   8.06 
Bank of Albuquerque
  133,487   7.19 
Bank of Arkansas
  35,423   11.91 
Colorado State Bank and Trust
  88,723   6.85 
Bank of Arizona
  27,977   10.16 
Bank of Kansas City
  19,247   6.21 

 
Accumulated Other Comprehensive Income (Loss)

Accumulated other comprehensive income (loss) (“AOCI”) includes unrealized gains and losses on available for sale (“AFS”) securities.  Unrealized gain (loss) on available for sale securities also includes 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 during 2011.  Such amounts will be amortized over the estimated remaining life of the security as an adjustment to yield, offsetting the related accretion of discount 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 rate lock hedge of the 2005 subordinated debenture issuance will be reclassified into income over the ten-year life of the debt.  Gains and losses in AOCI are net of deferred income taxes.

   
Unrealized Gain (Loss) on
       
      
Investment
     
Loss on
    
   
Available for
  
Securities
     
Effective
    
   
Sale
  
Transferred
  
Employee
  
Cash Flow
    
   
Securities
  
from AFS
  
Benefit Plans
  
Hedges
  
Total
 
Balance at December 31, 2008
 $(204,648) $–  $(17,039) $(1,199) $(222,886)
Net change in unrealized gain (loss)
  369,104   –   926   –   370,030 
Other-than-temporary impairment losses recognized in earnings
  34,413   –   –   –   34,413 
Reclassification adjustment for net (gains) losses realized and included in earnings
  (59,320)  –   –   262   (59,058)
Income tax expense (benefit)
  (132,777)  –   (360)  (102)  (133,239)
Balance at December 31, 2009
  6,772   –   (16,473)  (1,039)  (10,740)
Net change in unrealized gain (loss)
  181,051   –   4,412   –   185,463 
Other-than-temporary impairment losses recognized in earnings
  27,809   –   –   –   27,809 
Reclassification adjustment for net (gains) losses realized and included in earnings
  (21,882)  –   –   264   (21,618)
Income tax expense (benefit)
  (71,256)  –   (1,716)  (103)  (73,075)
Balance at December 31, 2010
  122,494   –   (13,777)  (878)  107,839 
Net change in unrealized gain (loss)
  45,593   –   1,694   –   47,287 
Other-than-temporary impairment losses recognized in earnings
  23,507   –   –   –   23,507 
Transfer of net unrealized gain from AFS to Investment securities
  (12,999)  12,999   –   –   – 
Amortization of unrealized gain on investment securities transferred from AFS
  –   (1,357)  –   –   (1,357)
Reclassification adjustment for net (gains) losses realized and included in earnings
  (34,144)  –   –   304   (33,840)
Income tax benefit (expense)
  (8,711)  (4,969)  (659)  (118)  (14,457)
Balance at December 31, 2011
 $135,740  $6,673  $(12,742) $(692) $128,979 

Earnings Per Share
Earnings Per Share
(16) Earnings per Share

Effective January 1, 2009, unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and shall be included in the computation of earnings per share pursuant to the two-class method. The Company has determined that its outstanding non-vested stock awards are participating securities.  Accordingly, earnings per common share are computed using the two-class method.  The following table presents the computation of basis and diluted earnings per share (dollar in thousands, except per share data):
 
   
Year ended December 31,
 
   
2011
  
2010
  
2009
 
Numerator:
         
Net income
 $285,875  $246,754  $200,578 
Earnings allocated to participating securities
  (2,214)  (1,583)  (818)
Numerator for basic earnings per share – income available to common shareholders
  283,661   245,171   199,760 
Effect of reallocating undistributed earnings of participating securities
  6   3   1 
Numerator for diluted earnings per share – income available to common shareholders
 $283,667  $245,174  $199,761 
Denominator:
            
Weighted average shares outstanding
  68,313,898   68,062,047   67,653,035 
Less:  Participating securities included in weighted average shares outstanding
  (526,222)  (434,312)  (277,648)
Denominator for basic earnings per common share
  67,787,676   67,627,735   67,375,387 
Dilutive effect of employee stock compensation plans 1
  251,087   203,999   112,557 
Denominator for diluted earnings per common share
  68,038,763   67,831,734   67,487,944 
Basic earnings per share
 $4.18  $3.63  $2.96 
Diluted earnings per share
 $4.17  $3.61  $2.96 
1Excludes employee stock options with exercise prices greater than current market price.
  769,041   1,245,483    2,735,375 



Reportable Segments
Reportable Segments
(17) Reportable Segments

BOK Financial operates three principal lines of business: commercial banking, consumer banking and wealth management.  Commercial banking includes lending, treasury and cash management services and customer risk management products to small businesses, middle market and larger commercial customers.  Commercial banking also includes the TransFund ATM network.  Consumer banking includes retail lending and deposit services and all mortgage banking activities.  Wealth management provides fiduciary services, brokerage and trading, private bank services and investment advisory services in all markets.  Wealth management also originates loans for high net worth clients.

In addition to its lines of business, BOK Financial has a funds management unit.  The primary purpose of this unit is to manage the overall liquidity needs and interest rate risk.  Each line of business borrows funds from and provides funds to the funds management unit as needed to support their operations.  Operating results for funds management and other include the effect of interest rate risk positions and risk management activities, securities gains and losses including impairment charges, the provision for credit losses in excess of net loans charged off, tax planning strategies and certain executive compensation costs that are not attributed to the lines of business.  Funds management and other also included the FDIC special assessment charge in the second quarter of 2009.  Regular FDIC insurance assessments are charged to the business units.

BOK Financial allocates resources and evaluates performance of its lines of business after allocation of funds, certain indirect expenses, taxes based on statutory rates, actual net credit losses and capital costs. The cost of funds borrowed from the funds management unit by the operating lines of business is transfer priced at rates that approximate market for funds with similar duration.  Market is generally based on the applicable LIBOR or interest rate swap rates, adjusted for prepayment risk.  This method of transfer-pricing funds that support assets of the operating lines of business tends to insulate them from interest rate risk.

The value of funds provided by the operating lines of business to the funds management unit is based on rates which approximate the wholesale market rates for funds with similar duration and re-pricing characteristics.  Market rates are generally based on LIBOR or interest rate swap rates.  The funds credit formula applied to deposit products with indeterminate maturities is established based on their re-pricing characteristics reflected in a combination of the short-term LIBOR rates and a moving average of an intermediate term swap rate, with an appropriate spread applied to both.  Shorter duration products are weighted towards the short-term LIBOR rate and longer duration products are weighted towards intermediate swap rates.  The expected duration ranges from 30 days for certain rate-sensitive deposits to five years.

Economic capital is assigned to the business units by a capital allocation model that reflects management's assessment of risk.  This model assigns capital based upon credit, operating, interest rate and market risk inherent in our business lines and recognizes the diversification benefits among the units.  The level of assigned economic capital is a combination of the risk taken by each business line, based on its actual exposures and calibrated to its own loss history where possible.  Average invested capital includes economic capital and amounts we have invested in the lines of business.

Substantially all revenue is from domestic customers. No single external customer accounts for more than 10% of total revenue.

Net loans charged off and provision for credit losses represents net loans charged off as attributed to the lines of business and the provision for credit losses in excess of net charge-offs included attributed to Funds Management and Other.


Reportable segments reconciliation to the Consolidated Financial Statements for the year ended December 31, 2011 is as follows (in thousands):

   
Commercial
  
Consumer
  
Wealth
Management
  
Funds Management and Other
  
BOK
Financial
Consolidated
 
Net interest revenue from external sources
 $346,861  $89,745  $26,785  $228,103  $691,494 
Net interest revenue (expense) from internal sources
  (29,919)  33,109   15,783   (18,973)  – 
Net interest revenue
  316,942   122,854   42,568   209,130   691,494 
Provision for (reduction of) allowances for credit losses
  21,007   13,451   2,860   (43,368)  (6,050)
Net interest revenue after provision for (reduction of) allowances for credit losses
  295,935   109,403   39,708   252,498   697,544 
Other operating revenue
  150,012   224,875   171,490   25,887   572,264 
Other operating expense
  234,342   279,444   188,200   119,487   821,473 
Income before taxes
  211,605   54,834   22,998   158,898   448,335 
Federal and state income tax
  82,314   21,330   8,946   45,921   158,511 
Net income
  129,291   33,504   14,052   112,977   289,824 
Net income attributable to non-controlling interest
  –   –   –   3,949   3,949 
Net income attributable to BOK Financial Corp.
 $129,291  $33,504  $14,052  $109,028  $285,875 
                      
Average assets
 $9,627,257  $5,937,585  $3,829,894  $5,100,125  $24,494,861 
Average invested capital
  884,326   273,809   174,927   1,348,803   2,681,865 
                      
Performance measurements:
                    
Return on average assets
  1.34%  0.56%  0.37%      1.17%
Return on average invested capital
  14.62%  12.24%  8.03%      10.66%
Efficiency ratio
  50.27%  74.66%  88.15%      63.27%

 
Reportable segments reconciliation to the Consolidated Financial Statements for the year ended December 31, 2010 is as follows (in thousands):
 
   
Commercial
  
Consumer
  
Wealth
Management
  
Funds Management and Other
  
BOK
Financial
Consolidated
 
Net interest revenue from external sources
 $343,241  $86,291  $31,161  $248,359  $709,052 
Net interest revenue (expense) from internal sources
  (45,144)  47,624   12,373   (14,853)  – 
Net interest revenue
  298,097   133,915   43,534   233,506   709,052 
Provision for credit losses
  70,752   24,705   10,569   (887)  105,139 
Net interest revenue after provision for credit losses
  227,345   109,210   32,965   234,393   603,913 
Other operating revenue
  140,317   215,506   165,204   (119)  520,908 
Other operating expense
  233,455   242,511   177,609   99,595   753,170 
Income before taxes
  134,207   82,205   20,560   134,679   371,651 
Federal and state income tax
  52,207   31,978   7,998   31,174   123,357 
Net income
  82,000   50,227   12,562   103,505   248,294 
Net income attributable to non-controlling interest
  –   –   –   1,540   1,540 
Net income attributable to BOK Financial Corp.
 $82,000  $50,227  $12,562  $101,965  $246,754 
                      
Average assets
 $9,007,403  $6,243,519  $3,499,115  $4,768,821  $23,518,858 
Average invested capital
  899,005   277,837   169,775   1,078,026   2,424,643 
                      
Performance measurements:
                    
Return on average assets
  0.91%  0.80%  0.36%      1.05%
Return on average invested capital
  9.12%  18.08%  7.40%      10.18%
Efficiency ratio
  53.05%  72.82%  85.39%      60.83%
 

Reportable segments reconciliation to the Consolidated Financial Statements for the year ended December 31, 2009 is as follows (in thousands):
 
   
Commercial
  
Consumer
  
Wealth
Management
  
Funds Management and Other
  
BOK
Financial
Consolidated
 
Net interest revenue from external sources
 $346,608  $57,647  $24,665  $281,444  $710,364 
Net interest revenue (expense) from internal sources
  (50,989)  73,796   19,165   (41,972)  – 
Net interest revenue
  295,619   131,443   43,830   239,472   710,364 
Provision for credit losses
  101,120   21,062   11,028   62,690   195,900 
Net interest revenue after provision for credit losses
  194,499   110,381   32,802   176,782   514,464 
Other operating revenue
  133,390   169,622   156,329   33,649   492,990 
Other operating expense
  230,224   242,981   171,158   52,370   696,733 
Income before taxes
  97,665   37,022   17,973   158,061   310,721 
Federal and state income tax
  37,992   14,402   6,991   47,320   106,705 
Net income
  59,673   22,620   10,982   110,741   204,016 
Net income attributable to non-controlling interest
  –   –   –   3,438   3,438 
Net income attributable to BOK Financial Corp.
 $59,673  $22,620  $10,982  $107,303  $200,578 
                      
Average assets
 $10,102,655  $6,148,067  $3,027,312  $3,618,007  $22,896,040 
Average invested capital
  950,684   253,233   160,276   712,848   2,077,041 
                      
Performance measurements:
                    
Return on average assets
  0.59%  0.37%  0.36%      0.88%
Return on average invested capital
  6.28%  8.93%  6.85%      9.66%
Efficiency ratio
  53.66%  81.26%  85.83%      59.07%

Fair Value Measurements
Fair Value Measurements
(18) Fair Value of Financial Instruments

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.  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.

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, 2011 (dollars in thousands):
 
      
Range of
  
Average
     
Estimated
 
   
Carrying
  
Contractual
  
Re-pricing
  
Discount
  
Fair
 
   
Value
  
Yields
  
(in years)
  
Rate
  
Value
 
Cash and cash equivalents
 $986,365           $986,365 
Trading securities
  76,800            76,800 
                   
Investment securities:
                 
Municipal and other tax-exempt
  128,697            133,670 
U.S. agency residential mortgage-backed securities
  121,704            120,536 
Other debt securities
  188,835            208,451 
Total investment securities
  439,236            462,657 
                   
Available for sale securities:
                 
U.S. Treasury
  1,006            1,006 
Municipal and other tax-exempt
  68,837            68,837 
U.S. agency residential mortgage-backed securities
  9,588,177            9,588,177 
Privately issued residential mortgage-backed securities
  419,166            419,166 
Other debt securities
  36,495            36,495 
Perpetual preferred stock
  18,446            18,446 
Equity securities and mutual funds
  47,238            47,238 
Total available for sale securities
  10,179,365            10,179,365 
                   
Fair value option securities
  651,226            651,226 
Residential mortgage loans held for sale
  188,125   –   –   –   188,125 
                      
Loans:
                    
Commercial
  6,571,454   0.25 –30.00%  0.57   0.63 – 3.85%  6,517,795 
Commercial real estate
  2,279,909   0.38 –18.00   1.26   0.28 – 3.51   2,267,375 
Residential mortgage
  1,970,461   0.38 –18.00   3.26   1.14 – 3.70   2,034,898 
Consumer
  447,919   0.38 –21.00   0.42   1.88 – 3.88   436,490 
Total loans
  11,269,743               11,256,558 
Allowance for loan losses
  (253,481)              – 
Net loans
  11,016,262               11,256,558 
                      
Mortgage servicing rights
  86,783               86,783 
Derivative instruments with positive fair value, net of cash margin
  293,859               293,859 
Other assets – private equity funds
  30,902               30,902 
Deposits with no stated maturity
  15,380,598               15,380,598 
Time deposits
  3,381,982   0.01 –9.64   2.07   1.02 – 1.43   3,441,610 
Other borrowings
  2,370,867   0.25 –6.58   0.00   0.04 – 2.76   2,369,224 
Subordinated debentures
  398,881   5.19 –5.82   1.44   3.29   411,243 
Derivative instruments with negative fair value, net of cash margin
  236,522               236,522 
 

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, 2010 (dollars in thousands):

      
Range of
  
Average
     
Estimated
 
   
Carrying
  
Contractual
  
Re-pricing
  
Discount
  
Fair
 
   
Value
  
Yields
  
(in years)
  
Rate
  
Value
 
Cash and cash equivalents
 $1,269,404           $1,269,404 
Trading securities
  55,467            55,467 
                   
Investment securities:
                 
Municipal and other tax-exempt
  184,898            188,577 
Other debt securities
  154,655            157,528 
Total investment securities
  339,553            346,105 
                   
Available for sale securities:
                 
Municipal and other tax-exempt
  72,942            72,942 
U.S. agency residential mortgage-backed securities
  8,446,908            8,446,908 
Privately issued residential mortgage-backed securities
  644,210            644,210 
Other debt securities
  6,401            6,401 
Perpetual preferred stock
  22,114            22,114 
Equity securities and mutual funds
  43,046            43,046 
Total available for sale securities
  9,235,621            9,235,621 
                   
Mortgage trading securities
  428,021            428,021 
Residential mortgage loans held for sale
  263,413   –   –   –   263,413 
                      
Loans:
                    
Commercial
  5,933,996   0.25 –18.00%  0.57   0.72 – 4.67%  5,849,443 
Commercial real estate
  2,277,350   0.38 –18.00   1.17   0.29 – 3.81   2,221,443 
Residential mortgage
  1,828,248   0.38 –18.00   3.65   0.79 – 4.58   1,860,913 
Consumer
  603,442   0.38 –21.00   0.67   1.98 – 3.91   605,656 
Total loans
  10,643,036               10,537,455 
Allowance for loan losses
  (292,971)              – 
Net loans
  10,350,065               10,537,455 
                      
Mortgage servicing rights
  115,723               115,723 
Derivative instruments with positive fair value, net of cash margin
  270,445               270,445 
Other assets – private equity funds
  25,436               25,436 
Deposits with no stated maturity
  13,669,893               13,669,893 
Time deposits
  3,509,168   0.01 –9.64   1.85   0.82 – 1.56   2,979,505 
Other borrowings
  3,117,358   0.13 –6.58   0.02   0.13 – 2.73   2,982,460 
Subordinated debentures
  398,701   5.19 –5.82   2.30   3.72   413,328 
Derivative instruments with negative fair value, net of cash margin
  215,420               215,420 


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 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.  Fair values for a portion of the securities portfolio are based on significant unobservable inputs, including projected cash flows discounted as rates indicated by comparison to securities with similar credit and liquidity risk.


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 inputs.
 
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.
 
Loans
 
The fair value of loans, excluding mortgage 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.  The fair values of loans were estimated to approximate their discounted cash flows less loan loss allowances allocated to these loans of $207 million and $266 million at December 31, 2011 and 2010, respectively.
 
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.  Private equity fund assets are long-term, illiquid investments.  No secondary market exists for these assets.  They may only be realized through cash distributions from the underlying funds.
 
Deposits
 
The fair values of time deposits are based on discounted cash flow analyses using interest rates currently being offered on similar transactions.  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 this table.
 
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.
 
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 December 31, 2011 and 2010.
 

Assets and liabilities recorded at fair value in the financial statement on a recurring and non-recurring basis are grouped into three broad levels as follows:

Quoted Prices in active Markets for Identical Instruments – Fair value is based on unadjusted quoted prices in active markets for identical assets or liabilities.

Significant Other Observable Inputs – Fair value is based on significant other observable inputs are generally determined based on a single price for each financial instrument provided to us by an applicable third-party pricing service and are 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 – 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.

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 this evaluation, we determined that the results represent prices that would be received to sell assets or paid to transfer liabilities in orderly transactions in the current market.

Fair Value of Financial Instruments Measured on a Recurring Basis

The fair value of financial assets and liabilities that are measured on a recurring basis are as follows as of December 31, 2011 (in thousands):
 
   
Total
  
Quoted Prices in Active Markets for Identical Instruments
  
Significant Other Observable Inputs
  
Significant Unobservable Inputs
 
Assets:
            
Trading securities
 $76,800  $–  $76,623  $177 
                  
Available for sale securities:
                
U.S. Treasury
  1,006   1,006   –   – 
Municipal and other tax-exempt
  68,837   –   26,484   42,353 
U.S. agency residential mortgage-backed securities
  9,588,177   –   9,588,177   – 
Privately issued residential mortgage-backed securities
  419,166   –   419,166   – 
Other debt securities
  36,495   –   30,595   5,900 
Perpetual preferred stock
  18,446   –   18,446   – 
Equity securities and mutual funds
  47,238   23,596   23,642   – 
Total available for sale securities
  10,179,365   24,602   10,106,510   48,253 
                  
Fair value option securities
  651,226   –   651,226   – 
Residential mortgage loans held for sale
  188,125   –   188,125   – 
Mortgage servicing rights
  86,783   –   –   86,7831
Derivative contracts, net of cash margin2
  293,859   457   293,402   – 
Other assets – private equity funds
  30,902   –   –   30,902 
                  
Liabilities:
                
Derivative contracts, net of cash margin2
  236,522   –   236,522   – 
                  
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 7, Mortgage Banking Activities.
2
See Note 3 for detail of fair value of derivative contracts by contract type.
 

The fair value of financial assets and liabilities that are measured on a recurring basis are as follows as of December 31, 2010 (in thousands):
   
Total
  
Quoted Prices in Active Markets for Identical Instruments
  
Significant Other Observable Inputs
  
Significant Unobservable Inputs
 
Assets:
            
Trading securities
 $55,467  $877  $54,590  $– 
                  
Available for sale securities:
                
Municipal and other tax-exempt
  72,942   –   25,849   47,093 
U.S. agency residential mortgage-backed securities
  8,446,908   –   8,446,908   – 
Privately issued residential mortgage-backed securities
  644,210   –   644,210   – 
Other debt securities
  6,401   –   1   6,400 
Perpetual preferred stock
  22,114   –   22,114   – 
Equity securities and mutual funds
  43,046   22,344   20,702   – 
Total available for sale securities
  9,235,621   22,344   9,159,784   53,493 
                  
Fair value option securities
  428,021   –   428,021   – 
Residential mortgage loans held for sale
  263,413   –   263,413   – 
Mortgage servicing rights
  115,723   –   –   115,7231
Derivative contracts, net of cash margin2
  270,445   –   270,445   – 
Other assets – private equity funds
  25,436   –   –   25,436 
                  
Liabilities:
                
Certificates of deposit – fair value election
  27,414   –   27,414   – 
Derivative contracts, net of cash margin2
  215,420   –   215,420   – 
                  
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 7, Mortgage Banking Activities.
2
See Note 3 for detail of fair value of derivative contracts by contract type.

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 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.

These securities may be either investment grade or below investment grade.  As of December 31, 2011, taxable securities rated investment grade by all nationally recognized rating agencies were generally valued to yield 1.60% to 1.80%.  Average yields on comparable short-term taxable securities were generally less than 1%.  Tax-exempt securities rated investment grade by all nationally recognized rating agencies were generally value to yield a range of 1.00% to 1.50% which represented a spread of 75 to 80 basis points over average yields of comparable tax-exempt securities as of December 31, 2011.  The resulting estimated fair value of securities rated investment grade ranges from 98.79% to 100% of par at December 31, 2011.

Taxable securities rated investment grade by all nationally recognized rating agencies were generally valued at par to yield 1.76% at December 31, 2010.  Average yields on comparable short-term taxable securities were generally less than 1%.  Tax-exempt securities rated investment grade by all nationally recognized rating agencies were generally valued to yield a range of 1.15% to 1.45% at December 31, 2010.  This represented a spread of 75 to 80 basis points over average yields of comparable securities.  The resulting estimated fair value of tax-exempt securities rated investments grade ranges from 99.08% to 100% of par value at December 31, 2010.

After other-than-temporary impairment charges, $13 million of municipal and other tax-exempt securities were rated below investment grade by at least one of the three nationally recognized rating agencies at December 31, 2011.  The fair value of these securities was determined based on yields ranging from 6.25% to 9.58%.  These yields were determined using a spread of 600 basis points over comparable municipal securities of varying durations.  The resulting estimated fair value of securities rated below investment grade ranges from 76.45% to 76.92% of par value as of December 31, 2011.

After other-than-temporary impairment charges, approximately $11 million of our municipal and other tax-exempt securities were rated below investment grade by at least one of the three nationally recognized rating agencies at December 31, 2010.  The fair value of these securities was determined based on yields ranging from 4.62% to 8.93%.  These yields were determined using a spread of 425 basis points over average yields for comparable municipal securities of varying durations.  The resulting estimated fair value of securities rated below investment grade ranges from 85.13% to 85.34% of par value as of December 31, 2010.

All of these securities are currently paying contractual interest in accordance with their respective terms at December 31, 2011 and 2010.

During the year ended December 31, 2011, there were no transfers in or out of quoted prices in active markets for identical instruments, significant observable inputs or significant unobservable inputs.  The following represents the changes for the year ended December 31, 2011 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 at December 31, 2010
 $47,093  $6,400  $25,436 
Purchases and capital calls
  7,520   –   4,052 
Redemptions and distributions
  (10,625)  (500)  (3,903)
Gain (loss) recognized in earnings
            
Brokerage and trading revenue
  (576)  –   – 
Gain on other assets, net
  –   –   5,317 
Gain on securities, net
  21   –   – 
Other-than-temporary impairment losses
  (1,558)  –   – 
Other comprehensive income
  478   –   – 
Balance December 31, 2011
 $42,353  $5,900  $30,902 

The following represents the changes for the year ended December 31, 2010 related to assets measured at fair value on a recurring basis using significant unobservable inputs (in thousands):

      
Available for Sale Securities
    
   
Trading Securities
  
Municipal and other tax-exempt
  
Other debt securities
  
Other assets – private equity funds
 
              
Balance at December 31, 2009
 $9,800  $36,598  $17,116  $22,917 
Transfer from trading to available for sale
  (13,090)  12,990   100   – 
Purchases, sales, issuances and settlements, net
  3,555   (1,468)  (11,081)  2,479 
Gain (loss) recognized in earnings
                
Brokerage and trading revenue
  (265)  –   –   – 
Gain on other assets, net
  –   –   –   40 
Gain on securities, net
  –   7   259   – 
Other-than-temporary impairment losses
  –   (1,019)  –   – 
Other comprehensive income (loss)
  –   (15)  6   – 
Balance December 31, 2010
 $–  $47,093  $6,400  $25,436 

All trading securities with fair values based on significant unobservable inputs were transferred to available for sale to comply with banking regulations that prohibit national banks from purchasing below-investment grade securities.  These securities were purchased at par into the trading securities portfolio to accommodate customer liquidity needs and written down to fair value through earnings.  These securities were transferred at fair value to the holding company and reclassified to the available for sale portfolio consistent with the Company's intent at acquisition.

There were no transfers from quoted prices in active markets for identical instruments to significant other observable inputs during the year ended December 31, 2011 and 2010.

 
Fair Value of Financial Instruments Measured on a Non-Recurring Basis

Assets measured at fair value on a non-recurring basis include pension plan assets, 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 adjusted to fair value during the year ended December 31, 2011 (in thousands):

   
Carrying Value at December 31, 2011
  
Fair Value Adjustments for the Year Ended December 31, 2011 Recognized In:
 
   
Quoted Prices
in Active Markets for Identical Instruments
  
Significant
Other
Observable
Inputs
  
Significant
Unobservable
Inputs
  
Gross charge-offs against allowance for loan loss
  
Gross charge-offs against allowance for recourse loans
  
Net losses and expenses of repossessed assets, net
 
Impaired loans
 $–  $52,421  $1,447  $13,829  $1,368  $– 
Real estate and other repossessed assets
  –   57,160   13,100   –   –   14,077 

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 adjusted to fair value during the year ended December 31, 2010 (in thousands):

   
Carrying Value at December 31, 2010
  
Fair Value Adjustments for the Year Ended
December 31, 2010 Recognized In:
 
   
Quoted Prices
in Active Markets for Identical Instruments
  
Significant
Other
Observable
Inputs
  
Significant
Unobservable
Inputs
  
Gross charge-offs against allowance for loan loss
  
Gross charge-offs against allowance for recourse loans
  
Net losses and expenses of repossessed assets, net
  
Other
expense
 
Impaired loans
 $–  $77,665  $–  $51,058  $265  $–  $– 
Real estate and other repossessed assets
  –   72,113   1,607   –   –   25,020   – 
Other assets – alternative investments
  –   –   3,910   –   –   –   1,750 

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 observable 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.

The fair value of pension plan assets was approximately $44 million at both December 31, 2011 and 2010, determined by significant other observable inputs.  Fair value adjustments of pension plan assets along with changes in projected benefit obligation are recognized in other comprehensive income.

Intangible assets, which consist primarily of goodwill, core deposit intangible assets and other acquired intangibles, for each business unit are evaluated for impairment annually as of October 1st or more frequently if conditions indicate that impairment may have occurred.  The evaluation of possible impairment of intangible assets involves significant judgment based upon short-term and long-term projections of future performance.

The fair value of each of our reporting units is estimated by the discounted future earnings method.  Income growth is projected for each of our reporting units over five years and a terminal value is computed.  The projected income stream is converted to current fair value by using a discount rate that reflects a rate of return required by a willing buyer.  Assumptions used to value our business units are based on growth rates, volatility, discount rate and market risk premium inherent in our current stock price.  These assumptions are to be significant unobservable inputs and represent our best estimate of assumptions that market participants would use to determine fair value of the respective reporting units.  Critical assumptions in our evaluation were:

   
2011
  
2010
 
Average expected long-term growth rate
  10.00%  11.00%
Volatility factor for BOKF common stock
  0.90%  0.75%
Discount rate
  13.03%  11.73%
Market risk premium
  12.34%  12.26%
 
In general, the growth rate for all reporting units for 2011 and 2010 is based primarily upon continued expected improvements in credit quality, with steady growth in future years based on the expectation of improving overall economic growth.

Fair Value Election

Certain certificates of deposit were designated as carried at fair value.  This determination is made based on the Company's intent to convert these certificates from fixed interest rates to variable interest rates based on LIBOR with interest rate swaps that have not been designated as hedging instruments.  The fair value election for these liabilities better represents the economic effect of these instruments on the Company.  At December 31, 2011, there were no certificates of deposit that were designated as carried at fair value.  At December 31, 2010, the fair value and contractual principal amounts of these certificates was $27 million and $27 million, respectively.  Changes in the fair value of these certificates of deposit are included in Gain (Loss) on Derivatives, net in the Consolidated Statement of Earnings and increased pre-tax net income by $1.2 million in 2010 and $7.9 million in 2009.

As more fully disclosed in Note 2 and Note 7 to the Consolidated Financial Statements, the Company has elected to carry certain 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 which have been economically hedges by derivative contracts and residential mortgage loans held for sale at fair value.  Changes in the fair value of these financial instruments are recognized in earnings.
Parent Company Only Financial Statements
Parent Company Only Financial Statements
(19) Parent Company Only Financial Statements
 
 
Summarized financial information for BOK Financial – Parent Company Only follows:

Balance Sheets
(In thousands)
 
December 31,
 
   
2011
  
2010
 
        
Assets
      
Cash and cash equivalents
 $386,695  $207,453 
Available for sale securities
  40,766   59,115 
Investment in subsidiaries
  2,317,900   2,255,222 
Other assets
  8,682   25,846 
Total assets
 $2,754,043  $2,547,636 
          
Liabilities and Shareholders' Equity
        
Other liabilities
 $3,575  $25,910 
Total liabilities
  3,575   25,910 
Shareholders' equity:
        
Common stock
  4   4 
Capital surplus
  818,817   782,805 
Retained earnings
  1,953,332   1,743,880 
Treasury stock
  (150,664)  (112,802)
Accumulated other comprehensive income
  128,979   107,839 
Total shareholders' equity
  2,750,468   2,521,726 
Total liabilities and shareholders' equity
 $2,754,043  $2,547,636 

Statements of Earnings
(In thousands)
         
   
2011
  
2010
  
2009
 
           
Dividends, interest and fees received from subsidiaries
 $270,474  $280,125  $172,023 
Other revenue
  2,128   1,883   674 
Other-than-temporary impairment losses recognized in earnings
  (2,098)  (1,679)  –  
Total revenue
  270,504   280,329   172,697 
              
Interest expense
  354   507   581 
Professional fees and services
  538   795   – 
Other operating expense
  7,688   (47)  – 
Total expense
  8,580   1,255   581 
              
Income before taxes and equity in undistributed
            
income of subsidiaries
  261,924   279,074   172,116 
Federal and state income tax expense (benefit)
  (3,169)  415   738 
Income before equity in undistributed income of subsidiaries
  265,093   278,659   171,378 
Equity in undistributed income of subsidiaries
  20,782   (31,905)  29,200 
Net income
 $285,875  $246,754  $200,578 


Statements of Cash Flows
(In thousands)
 
   
2011
  
2010
  
2009
 
           
Cash flows from operating activities:
         
Net income
 $285,875  $246,754  $200,578 
Adjustments to reconcile net income to net cash
            
provided by operating activities:
            
Equity in undistributed income of subsidiaries
  (20,782)  31,905   (29,200)
Tax (expense) benefit on exercise of stock options
  659   (425)  (276)
Change in other assets
  15,249   20,713   (47,732)
Change in other liabilities
  (18,884)  (20,216)  47,333 
Net cash provided by operating activities
  262,117   278,731   170,703 
              
Cash flows from investing activities:
            
Purchases of available for sale securities
  (3,797)  (10,669)  (36,685)
Sales of available for sale securities
  16,500   –   – 
Investment in subsidiaries
  (7,250)  (21,692)  (26,500)
Net cash provided by (used in) investing activities
  5,453   (32,361)  (63,185)
              
Cash flows from financing activities:
            
Net change in other borrowings
  –   –   (50,000)
Issuance of common and treasury stock, net
  14,541   8,552   5,198 
Dividends paid
  (76,423)  (66,557)  (63,952)
Repurchase of common stock
  (26,446)  –   – 
Net cash used in financing activities
  (88,328)  (58,005)  (108,754)
Net increase (decrease) in cash and cash equivalents
  179,242   188,365   (1,236)
Cash and cash equivalents at beginning of period
  207,453   19,088   20,324 
Cash and cash equivalents at end of period
 $386,695  $207,453  $19,088 
              
Cash paid for interest
 $354  $507  $589 

Subsequent Events
Subsequent Events
(20) Subsequent Events

The Company evaluated events from the date of the consolidated financial statements on December 31, 2011 through the issuance of those consolidated financial statements included in this Annual Report on Form 10-K.  No additional events were identified requiring recognition in and/or disclosure in the consolidated financial statements.


Significant Accounting Policies (Policies)
Basis of Presentation 
Basis of Presentation
 
The Consolidated Financial Statements of BOK Financial Corporation (“BOK Financial” or “the Company”) have been prepared in conformity with accounting principles generally accepted in the United States, including general practices of the banking industry. The consolidated financial statements include the accounts of BOK Financial and its subsidiaries, principally BOKF, NA (“the Bank”), BOSC, Inc. and Cavanal Hill Investment Management, Inc.  All significant intercompany transactions are eliminated in consolidation.  Certain prior year amounts have been reclassified to conform to the current year presentation.

The consolidated financial statements include the assets, liabilities, non-controlling interests and results of operations of variable interest entities (“VIEs”) when BOK Financial is determined to be the primary beneficiary.  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.  See additional discussion of variable interest entities at Note 14 following.
Use of Estimates 
Use of Estimates
 
Preparation of BOK Financial's consolidated financial statements requires management to make estimates of future economic activities, including loan collectability, prepayments and cash flows from customer accounts. These estimates are based upon current conditions and information available to management. Actual results may differ significantly from these estimates.
Acquisitions 
Acquisitions
 
Assets and liabilities acquired, including identifiable intangible assets, are recorded at fair value on the acquisition dates. Goodwill is recognized as the excess of the purchase price over the net fair value of assets acquired and liabilities assumed.  The Consolidated Statements of Earnings include the results of operations from the dates of acquisition.
Goodwill and Intangible Assets 
Goodwill and Intangible Assets
 
Goodwill and intangible assets generally result from business combinations and are evaluated for each of BOK Financial's reporting units for impairment annually or more frequently if conditions indicate impairment. The evaluation of possible impairment of intangible assets involves significant judgment based upon short-term and long-term projections of future performance.

The fair value of BOK Financial's reporting units is estimated by the discounted future earnings method. Income growth is projected for each reporting unit and a terminal value is computed. This projected income stream is converted to current fair value by using a discount rate that reflects a rate of return required by a willing buyer.  Assumptions used to determine the fair value of the reporting units are compared to observable inputs, such as the market value of BOK Financial common stock.  However, determination of the fair value of individual reporting units requires the use of significant unobservable inputs.  There have been no changes in the techniques used to value goodwill.

Core deposit intangible assets are amortized using accelerated methods over the estimated lives of the acquired deposits.  These assets generally have a weighted average life of 5 years.  Other intangible assets are amortized using accelerated or straight-line methods, as appropriate, over the estimated benefit periods.  These periods range from 5 years to 20 years.  The net book values of core deposit intangible assets are evaluated for impairment when economic conditions indicate impairment may exist.
Cash Equivalents 
Cash Equivalents
 
Due from banks, funds sold (generally federal funds sold for one-day periods) and resell agreements (which generally mature within one to 30 days) are considered cash equivalents.
Securities 
Securities
 
Securities are identified as trading, investment (held to maturity) or available for sale at the time of purchase based upon the intent of management, liquidity and capital requirements, regulatory limitations and other relevant factors. Trading securities, which are acquired for profit through resale, are carried at fair value with unrealized gains and losses included in current period earnings. Investment securities are carried at amortized cost. Amortization is computed by methods that approximate level yield and is adjusted for changes in prepayment estimates. Securities identified as available for sale are carried at fair value. Unrealized gains and losses are recorded, net of deferredincome taxes, as accumulated other comprehensive income in shareholders' equity.  Available for sale securities are separately identified as pledged to creditors if the creditor has the right to sell or re-pledge the collateral.

The purchase or sale of securities is recognized on a trade date basis. Realized gains and losses on sales of securities are based upon specific identification of the security sold.  A receivable or payable is recognized for subsequent transaction settlement. BOK Financial will periodically commit to purchase to-be-announced residential mortgage-backed securities. These commitments are carried at fair value if they are considered derivative contracts.  Investment securities may be sold or transferred to trading or available for sale classification in certain limited circumstances specified in generally accepted accounting principles.  Securities meeting certain criteria may also be transferred from the available for sale classification to the investment securities portfolio at fair value on the date of transfer.  The unrealized 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 of accretion of the discount on the transferred securities.
 
On a quarterly basis, the Company performs separate evaluations of impaired debt and equity investment and available for sale securities to determine if the decline in fair value below the amortized cost is other-than-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 and securities portfolio management.  If the Company intends to sell or it is more likely than not that it will be required to sell the impaired debt security, a charge is recognized against earnings for the entire unrealized loss.  For all impaired debt securities for which there is no intent or expected requirement to sell, the evaluation considers all available evidence to assess whether it is more likely than not that all amounts due would not be collected according to the security's contractual terms.  Any expected credit loss due to the inability to collect all amounts due according to the security's contractual terms is recognized as a charge against earning.  Any remaining unrealized loss related to other factors would be recognized in other comprehensive income, net of taxes.

For equity securities, management evaluates various factors including cause, severity and duration of the decline in value of the security and prospects for recovery, as well as the Company's intent and ability not to sell the security until the fair value exceeds amortized cost.  If an unrealized loss is determined to be other-than-temporary, a charge is recognized against earnings for the difference between the security's amortized cost and fair value.

BOK Financial has elected to carry certain non-trading securities at fair value with changes in fair value recognized in current period income.  These securities are held with the intent that gains or losses will offset changes in the fair value of mortgage servicing rights or certain derivative instruments.
Derivative Instruments 
Derivative Instruments
 
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.  The determination of fair value of derivative instruments considers changes in interest rates, commodity prices and foreign exchange rates.  Credit risk is also considered in determining fair value.  Deterioration in the credit rating of customers or other counterparties reduces the fair value of asset contracts.  Deterioration of our credit rating to below investment grade or the credit ratings of other counterparties could decrease the fair value of our derivative liabilities.  Changes in fair value are generally reported in income as they occur.

Derivative instruments used to manage interest rate risk consist primarily of interest rate swaps.  These contracts modify the interest income or expense of certain assets or liabilities.  Amounts receivable from or payable to counterparties are reported in interest income or expense using the accrual method.  Changes in fair value of interest rate swaps are reported in other operating revenue – gain (loss) on derivatives, net.

In certain circumstances, an interest rate swap may be designated as a fair value hedge and may qualify for hedge accounting.  In these circumstances, changes in the full fair value of the hedged asset or liability, not only changes in fair value due to changes in the benchmark interest rate, is also recognized in earnings and may partially or completely offset changes in fair value of the interest rate swap.  A fair value hedge is considered effective if the cumulative fair value adjustment of the interest rate swap is within a range of 80% to 120% of the cumulative change in the fair value of the hedged asset or liability.  Any ineffectiveness, including ineffectiveness due to credit risk or ineffectiveness created when the fixed rate of the hedged asset or liability does not match the fixed rate of the interest rate swap, is recognized in earnings and reported Gain (loss) on derivatives, net.

Interest rate swaps may be designated as cash flow hedges of variable rate assets or liabilities, or of anticipated transactions.  Changes in the fair value of interest rate swaps designated as cash flow hedges are recorded in accumulated other comprehensive income to the extent they are effective.  The amount recorded in other comprehensive income is reclassified to earnings in the same periods as the hedged cash flows impact earnings.  The ineffective portion of changes in fair value is reported in current earnings.

If a derivative instrument that had been designated as a fair value hedge is terminated or if the hedge designation is removed or deemed to no longer be effective, the difference between the hedged items carrying value and its face amount is recognized into income over the remaining original hedge period.  Similarly, if a derivative instrument that had been designated as a cash flow hedge is terminated or if the hedge designation is removed or deemed to no longer be effective, the amount remaining in accumulated other comprehensive income is reclassified to earnings in the same period as the hedged item.

BOK Financial also enters into mortgage loan commitments that are considered derivative instruments.  Forward sales contracts are used to hedge these mortgage loan commitments as well as mortgage loans held for sale.  Mortgage loan commitments are carried at fair value based upon quoted prices.  Changes in fair value of the mortgage loan commitments and forward sales contracts are reported in other operating revenue – mortgage banking revenue.

BOK Financial offers programs that permit its customers to manage various risks, including fluctuations in energy, cattle and other agricultural products, interest rates and foreign exchanges rates with derivative contracts.  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.

When bilateral netting agreements 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 counterparty basis.

Derivative contracts may also 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.
Loans 
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.

Performing loans may be renewed under then current collateral value, debt service ratio and other underwriting standards.   Nonperforming loans may be renewed and will remain on nonaccrual status.  Nonperforming loans renewed will be evaluated and may be charged off if the loan balance is no longer covered by the paying capacity of the borrower based on an evaluation of available cash resources and collateral value.

Interest is accrued at the applicable interest rate on the principal amount outstanding. Loans are placed on nonaccrual status when, in the opinion of management, full collection of principal or interest is uncertain.  Internally risk graded loans are individually evaluated for nonaccrual status quarterly.  Non-risk graded loans are generally placed on nonaccrual status when more than 90 days past due.  Interest previously accrued but not collected is charged against interest income when the loan is placed on nonaccrual status. Payments on nonaccrual loans are applied to principal or reported 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.

All distressed commercial and commercial real estate loans are placed on nonaccrual status.  Modification of nonaccruing loans to distressed borrowers generally consists of extension of payment terms, renewal of matured nonaccruing loans or interest rate concessions.  Principle and accrued but unpaid interest is not forgiven.  Renewed or modified nonaccruing loans are charged-off when the loan balance is no longer covered by the paying capacity of the borrower based on a quarterly evaluation of cash resources and collateral value.  Renewed or modified nonperforming loans generally remain on nonaccrual status until full collection of principal and interest in accordance with original terms, including principal previously charged off, is probable.  Consumer loans to troubled borrowers are not voluntarily modified.

Residential mortgage loans are primarily modified in accordance with U.S. government agency guidelines by reducing interest rates and extending the number of payments.  No unpaid principal or interest is forgiven.  Interest guaranteed by U.S. government agencies under residential mortgage loan programs continues to accrue based on the modified terms of the loan.  Renegotiated loans may be sold after a period of satisfactory performance.  If it becomes probable that all amounts due according to the modified loan terms will not be collected, the loan is placed on nonaccrual status and included in nonaccrual loans.

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.

Certain residential mortgage loans originated by the Company are held for sale and are carried at fair value based on sales commitments or market quotes and are reported separately in the Consolidated Balance Sheets. Changes in fair value are recorded in other operating revenue – mortgage banking revenue in the Consolidated Statements of Earnings.

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 credits 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.
Allowance for Loan Losses and Off-Balance Sheet Credit Losses 
Allowance for Loan Losses and Off-Balance Sheet Credit Losses

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

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 based on estimated loss rates by loan class and nonspecific allowances based on general economic, risk concentration and related factors.  There were no changes to accounting policies related to the allowance for loan loss and accrual for off-balance sheet credit losses during 2011.  Effective with the fourth quarter of 2011, the Company enhanced its methodology to include specific loss rates by loan class.  There were no other changes to the Company's methodology during 2011.

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 an evaluation of the borrowers' ability to repay.  Risk grades are updated quarterly.  Non-risk graded loans are collectively evaluated for impairment.  Certain commercial loans and most residential mortgage and consumer loans are small balance, homogeneous pools of loans that are not risk graded.

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.  This is substantially the same criteria used to determine when a loan should be placed on nonaccrual status.  All commercial and commercial real estate loans that have been modified in a troubled debt restructuring are considered to be impaired and remain classified as nonaccrual.  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 not adjusted by the Company.  Collateral value of mineral rights is generally determined by our internal staff of engineers based on projected cash flows from proven oil and gas reserves under existing economic and operating conditions.  The value of other collateral is generally determined by our special assets staff based on projected liquidation cash flows under current market conditions.  Collateral values and available cash resources that support impaired loans are evaluated quarterly.  Updated appraisals are obtained at least annually or more frequently if market conditions indicate collateral values have declined.  Historical statistics may be used in limited situations to assist in estimating future cash flows or collateral values, such as when a collateral dependent impaired loan is identified at the end of a reporting period.  Historical statistics are used as a practical way to estimate impairment 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 are subject to volatility.

General allowances for unimpaired loans are based on an estimated loss rate by loan class.  For risk graded loans, estimated loss rates are developed using historical gross loss rates, as adjusted for changes in risk grading and inherent risk identified by loan class.  Loss rates for each loan class are determined by the current loss rate based on the most recent twelve months or a long-term gross loss rate that most appropriately represents the current economic environment.  For each loan class, average risk grades for the most recent twelve month are compared to long-term average risk grades to determine if risk is increasing or decreasing.  Loss rates are accordingly adjusted upward or downward in proportion to increasing or decreasing risk.  Historical loss rates may be further adjusted for inherent risks identified for the given loan class which have not yet been captured in the actual gross loss rates or risk grading.

Nonspecific allowances are maintained for risks beyond factors specific to a particular loan or loan class.  These factors include trends in the economy in our primary lending areas, overall growth in the loan portfolio and other relevant factors.  Nonspecific allowances may also be utilized to adjust loss rates based on historical information, including consideration of the duration of the business cycle on loss rates.

An accrual for off-balance sheet credit losses is included in Other liabilities.  The appropriateness of the accrual is determined in the same manner as the allowance for loan losses.  Changes in the accrual for off-balance sheet credit losses are recognized through the provision for credit losses.

A provision for credit losses is charged against or credited to earnings in amounts necessary to maintain appropriate allowances for loan and accrual for off-balance sheet credit losses. All loans are charged off when the loan balance or a portion of the loan balance is no longer covered by the paying capacity of the borrower based on an evaluation of available cash resources and collateral value.  Internally risk graded loans are evaluated quarterly and charge-offs are taken in the quarter in which the loss is identified.  Non-risk graded loans that are past due between 60 days and 180 days, based on the loan product, are charged off. Recoveries of loans previously charged off are added to the allowance.
Transfers of Financial Assets 
Transfers of Financial Assets
 
BOK Financial transfers financial assets as part of its mortgage banking activities and periodically may transfer other financial assets.  Transfers are recorded as sales when the criteria for surrender of control are met.  BOK Financial retains an obligation under underwriting representations and warranties related to residential mortgage loans transferred and generally retain the right to service the loans.  The Company may incur a recourse obligation in limited circumstances.  The Company may also retain a residual interest in excess cash flows generated by the assets.  All assets obtained, including cash, servicing rights and residual interests, and all liabilities incurred, including recourse obligations, are initially recognized at fair value, all assets transferred are derecognized and any gain or loss on the sale is recognized in earnings.  Subsequently, servicing rights and residual interests are carried at fair value with changes in fair value recognized

in earnings as they occur.  A separate accrual is maintained as part of Other liabilities in the Consolidated Balance Sheets for the Company's credit risk on loans transferred subject to a recourse obligation.  Other liabilities also include an accrual for obligations related to residential mortgage loans transferred under certain underwriting representations and warranties.  The Company may also retain right to reacquire certain residential mortgage previously sold to investors when certain delinquency criteria are met.  Because of this repurchase right, the Company is deemed to have regained effective control over these loans when the criteria are met and must be included in the loans and a corresponding liability in the Consolidated Balance Sheets of the Company.
Real Estate and Other Repossessed Assets 
Real Estate and Other Repossessed Assets
 
Real estate and other repossessed assets are assets acquired in partial or total forgiveness of loans. These assets are carried at the lower of cost, which is determined by fair value at date of foreclosure less estimated disposal costs, or current fair value less estimated disposal costs.  Decreases in fair value below cost are recognized as asset-specific valuation allowances which may be reversed when supported by future increases in fair value.  Fair values of real estate are based on “as is” appraisals which are updated at least annually or more frequently for certain asset types or assets located in certain distressed markets.  Fair values based on appraisals are generally considered to be based on significant other observable inputs.  The Company also considers decreases in listing price and other relevant information in quarterly evaluations and reduces the carrying value of real estate and other repossessed assets when necessary.  Fair values based on list prices and other relevant information are generally considered to be based on significant unobservable inputs.  Additional costs incurred to complete real estate and other repossessed assets may increase the carrying value, up to current fair value based on “as completed” appraisals.  The fair value of mineral rights included in repossessed assets are generally determined by our internal staff of engineers based on projected cash flows from proven oil and gas reserves under existing economic and operating conditions.  The value of other repossessed assets is generally determined by our special assets staff based on projected liquidation cash flows under current market conditions.  Income generated by these assets is recognized as received.  Operating expenses are recognized as incurred.  Gains or losses on sales of real estate and other repossessed assets are based on the cash proceeds received less the cost basis of the asset, net of any valuation allowances.
Premises and Equipment 
Premises and Equipment
 
Premises and equipment are carried at cost, including capitalized interest when appropriate, less accumulated depreciation and amortization. Depreciation and amortization are computed on a straight-line basis over the estimated useful lives of the assets or, for leasehold improvements, over the shorter of the estimated useful lives or remaining lease terms. Useful lives range from 5 years to 40 years for buildings and improvements, 3 years to 7 years for software and 3 years to 10 years for furniture and equipment.  Repair and maintenance costs are charged to expense as incurred.

Premises no longer used by the Company are transferred to real estate and other repossessed assets.  The transferred amount is the lower of cost less accumulated depreciation or fair value less estimated disposal costs as of the transfer date.

Rent expense for leased premises is recognized as incurred over the lease term.  The effects of rent holidays, significant rent escalations and other adjustments to rent payments are recognized on a straight-line basis over the lease term.
Mortgage Servicing Rights 
Mortgage Servicing Rights
 
Mortgage servicing rights may be purchased or 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.  All mortgage servicing rights are carried at fair value.  Changes in the fair value are recognized in earnings as they occur.

There is no active market for trading in mortgage servicing rights after origination.  A cash flow model is used to determine fair value.  Key assumptions and estimates, including projected prepayment speeds and assumed servicing costs, earnings on escrow deposits, ancillary income and discount rates, used by this model are based on current market sources.  Assumptions used to value mortgage servicing rights are considered significant unobservable inputs.  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.  Fair value estimates from outside sources are received at least annually to corroborate the results of the valuation model.
Federal and State Income Taxes 
Federal and State Income Taxes
 
BOK Financial and its subsidiaries file consolidated tax returns.  The subsidiaries provide for income taxes on a separate return basis and remit to BOK Financial amounts determined to be currently payable.

Income tax expense is based on an effective tax rate that considers statutory federal and state income tax rates and permanent differences between income and expense recognition for financial reporting and income tax purposes.  The amount of income tax expense recognized in any period may differ from amounts reported to taxing authorities.

BOK Financial has an allowance for uncertain tax positions, which is included in accrued current income taxes payable, for the uncertain portion of recorded tax benefits and related interest.  These uncertainties result from the application of complex tax laws, rules, regulations and interpretations, primarily in state taxing jurisdictions.  The adequacy of this allowance is assessed quarterly and may be adjusted through current income tax expense in future periods based on changing facts and circumstances, completion of examinations by taxing authorities or expiration of a statute of limitations.  Estimated penalties and interest on uncertain tax positions are recognized in income tax expense.

Deferred tax assets and liabilities are determined based upon the difference between the values of the assets and liabilities as reflected in the financial statements and their related tax basis using enacted tax rates in effect for the year in which the differences are expected to be recovered or settled.  As changes in tax law or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.  A valuation allowance is provided when it is more likely than not that some portion or the entire deferred tax asset will not be realized.
Employee Benefit Plans 
Employee Benefit Plans
 
BOK Financial sponsors a defined benefit cash balance pension plan (“Pension Plan”), qualified profit sharing plan (“Thrift Plan”) and employee healthcare plans.  Pension Plan costs, which are based upon actuarial computations of current costs, are expensed annually.  Unrecognized prior service cost and net gains or losses are amortized on a straight-line basis over the lesser of the average remaining service periods of the participants or 10 years.  Employer contributions to the Pension Plan are in accordance with Federal income tax regulations.  Pension Plan benefits were curtailed as of April 1, 2006.  No participants may be added to the Pension Plan and no additional service benefits will be accrued.

BOK Financial recognizes the funded status of its employee benefit plans.  For a pension plan, the funded status is the difference between the fair value of plan assets and the projected benefit obligation measured as of the fiscal year-end date.  Adjustments required to recognize the Pension Plan's net funded status are made through accumulated other comprehensive income, net of deferred income taxes.

Employer contributions to the Thrift Plan, which matches employee contributions subject to percentage and years of service limits, are expensed when incurred.  BOK Financial recognizes the expense of health care benefits on the accrual method.
Stock Compensation Plans 
Stock Compensation Plans
 
BOK Financial awards stock options and non-vested common shares as compensation to certain officers.  Grant date fair value of stock options is based on the Black-Scholes option pricing model.  Stock options generally have graded vesting over 7 years.  Each tranche is considered a separate award for valuation and compensation cost recognition.  Grant date fair value of non-vested shares is based on the current market value of BOK Financial common stock.  Non-vested shares generally cliff vest in 5 years.

Compensation cost is recognized as expense over the service period, which is generally the vesting period.  Expense is reduced for estimated forfeitures over the vesting period and adjusted for actual forfeitures as they occur.  Stock-based compensation awarded to certain officers has performance conditions that affect the number of awards granted.  Compensation cost is adjusted based on the probable outcome of the performance conditions.  Excess tax benefits from share-based payments recognized in capital surplus are determined by the excess of tax benefits recognized over the tax effect of compensation cost recognized.

Certain executive officers may defer the recognition of income from stock-based compensation for income tax purposes and to diversify the deferred income into alternative investments.  Stock-based compensation granted to these officers is considered liability awards.  Changes in the fair value of liability awards are recognized as compensation expense in the period of the change.
Other Operating Revenue 
Other Operating Revenue
 
Fees and commission revenue is recognized at the time the related services are provided or products are sold and may be accrued when necessary.  Accrued fees and commissions are reversed against revenue if amounts are subsequently deemed to be uncollectible.  Revenue is recognized on a gross basis whenever we have primary responsibility and risk in providing the services or products to our customers and on a net basis whenever we act as a broker for products or services of others.

Brokerage and trading revenue includes changes in the fair value of securities held for trading purposes and derivatives held for customer risk management programs, including credit losses on trading securities and derivatives, commissions earned from the retail sale of securities, mutual funds and other financial instruments, and underwriting and financial advisory fees.

Transaction card revenue includes merchant discounts fees, electronic funds transfer network fees and check card fees.  Merchant discount fees represent fees paid by customers for account management and electronic processing of transactions.  Merchant discount fees are recognized at the time the customer's transactions are processed or other services are performed.  The Company also maintains the TransFund electronic funds transfer network for the benefit of its members, which includes the Bank.  Electronic funds transfer fees are recognized as electronic transactions processed on behalf of its members.  Check card fees represent interchange fees paid by a merchant bank for transactions processed from cards issued by the Company.  Check card fees are recognized when transactions are processed.

Trust fees and commissions include revenue from asset management, custody, recordkeeping, investment advisory and administration services.  Revenue is recognized on an accrual basis at the time the services are performed and may be based on either the fair value of the account or the service provided.

Deposit service charges and fees are recognized at least quarterly in accordance with published deposit account agreement and disclosure statement for retail accounts or contractual agreement for commercial accounts.  Item charges for overdraft or non-sufficient funds items are recognized as items are presented for payment.  Account balance charges and activity fees are accrued monthly and collected in arrears. Commercial account activity fees may be offset by an earnings credit based on account balances.


Newly Adopted and Pending Accounting Policies 
Effect of Recently Issued Statements of Financial Accounting Standards

Financial Accounting Standards Board

FASB Accounting Standards Update No. 2010-06, Improving Disclosures About Fair Value Measurements (“ASU 2010-06”)

ASU 2010-06 amends Accounting Standards Codification (“ASC”) 820, Fair Value Measurements, to add new disclosure requirements about transfers into and out of Levels 1 and 2, as defined in ASC 820 and separate disclosures about purchases, sales, issuance and settlements relating to Level 3 measurements, as defined in ASC 820.  It also clarified existing fair value disclosures about the level of disaggregation and about inputs and valuation techniques used to measure fair value.  ASU 2010-06 was effective for the Company on January 1, 2010 with exception of the requirement to provide Level 3 activity of purchases, sales, issuances, and settlement on a gross basis, which were effective for the Company on January 1, 2011 and did not have a significant impact on the Company's financial statements.

FASB Accounting Standards Update No. 2010-20 Disclosures about the Credit Quality of Financing Receivables and the Allowance for Credit Losses (“ASU 2010-20”)

On July 21, 2010, the FASB issued ASU 2010-20 which expanded the disclosure requirements concerning the credit quality of an entity's financing receivables and its allowance for credit losses.  ASU 2010-20 was effective for the Company as of December 31, 2010 as it relates to disclosures required as of the end of the reporting period.  Disclosure related to activity during the reporting period were effective for the Company January 1, 2011 except for troubled debt restructuring as discussed below.

FASB Accounting Standards Update No. 2010-28 Intangibles – Goodwill and Other (Topic 530): When to Perform Step 2 of the Goodwill Impairment Test for Reporting Units with Zero or Negative Carrying Amounts (“ASU 2010-28”)

On December 17, 2010, the FASB issued ASU 2010-28, a consensus of the FASB Emerging Issues Task Force.  ASU 2010-28 modifies Step 1 of the goodwill impairment test for reporting units with zero or negative carrying amounts.  For those reporting units, an entity is required to perform a Step 2 of the goodwill impairment test if it is more likely than not that a goodwill impairment exists and the entity will no longer be able to assert that a reporting unit is not required to perform a Step 2 because the carrying amount of the reporting unit is zero or negative.   The amendment was effective for the Company January 1, 2011 and did not have a significant impact on the consolidated financial statements.

FASB Accounting Standards Update No. 2011-02, Receivables (Topic 310): A Creditor's Determination of Whether a Restructuring Is a Troubled Debt Restructuring (“ASU 2011-02”)
 
On April 5, 2011, the FASB issued ASU 2011-02 to provide additional guidance or clarification to help creditors in determining whether a creditor has granted a concession and whether a debtor is experiencing financial difficulties for the purposes of determining whether a restructuring constitutes a troubled debt restructuring.  ASU 2011-02 was effective for the Company on July 1, 2011.  In addition, the disclosure required by ASU 2010-20 that were temporarily deferred by FASB Accounting Standards Update No. 2011-01, Receivables (Topic 310): Deferral of the Effective Date of Disclosures about Troubled Debt Restructuring in Update No. 2010-20 are included in Note 4 for the period beginning July 1, 2011, as required.  ASU 2011-02 did not have a material impact on the Company's consolidated financial statements.
 
FASB Accounting Standards Update No. 2011-03, Reconsideration of Effective Control for Repurchase Agreements (“ASU 2011-03”)
 
On April 29, 2011, the FASB issued ASU 2011-03 that eliminates the collateral maintenance requirement under GAAP for entities to consider in determining whether a transfer of financial assets subject to repurchase agreements is accounted for as a sale or as a secured borrowing.  ASU 2011-03 was effective for the Company on January 1, 2012 and it did not have a material impact on the Company's consolidated financial statements.
 
FASB Accounting Standards Update No. 2011-04, Fair value Measurements (Topic 820): Amendment to Achieve Common Fair Value Measurements and Disclosure Requirements in U.S. GAAP and IFRSs (“ASU 2011-04”)
 
On May 12, 2011, the FASB issued ASU 2011-04 to provide clarified and converged guidance on fair value measurement and expanded disclosures concerning fair value measurements.  ASU 2011-04 is largely consistent with the existing fair value measurement principals contained in ASC 820, Fair Value Measurement.  ASU 2011-04 was effective for the Company on January 1, 2012 and did not have a material impact on the Company's financial statements.
 
FASB Accounting Standards Update No. 2011-05, Comprehensive Income (Topic 220):  Presentation of Comprehensive Income (“ASU 2011-05”)
 
On June 16, 2011, the FASB issued ASU 2011-05 which revises the manner in which entities present comprehensive income in their financial statements by removing the presentation option in ASC 220, Comprehensive Income, and requires entities to report components of comprehensive income in either a continuous statement of comprehensive income or two separate but consecutive statements.  ASU 2011-5 is effective for the Company for interim and annual period beginning after December 15, 2011 and will be applied retrospectively for all periods presented in the consolidated financial statements.  Early adoption is permitted, but has not been elected by the Company.
 
FASB Accounting Standards Update No. 2011-08, Testing Goodwill for Impairment (“ASU 2011-08”)
 
On September 15, 2011, the FASB issued ASU 2011-08 which amends the guidance in ASC 350-20, Intangibles – Goodwill and Other:  Goodwill, on testing goodwill for impairment.  Under the revised guidance, the Company has the option of performing a qualitative assessment before calculating the fair value of the reporting unit when testing goodwill for impairment.  If the company determines on the basis of qualitative factors that the fair value of the reporting unit is more likely than not less than the carry amount, the two-step impairment test, as defined in ASC 350-20 would be required.  ASU 2011-08 does not change the calculation or allocation of goodwill.  ASU 2011-08 does not revise the requirement to test goodwill annually for impairment or to test for goodwill impairment between annual tests if events or circumstances warrant.  However, ASU 2011-08 does revise examples of events and circumstances that an entity should consider.  ASU 2011-08 was effective for the Company on January 1, 2012.  Early adoption was permitted and the Company elected to early adopt effective October 1, 2011.  ASU 2011-08 did not have a material impact on the Company's consolidated financial statements.

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's 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 International Financial Reporting Standards by providing information about both gross and net exposures.  The new disclosure requirements are effective for interim and annual reporting periods beginning on or after January 1, 2013.

FASB Accounting Standards Update No. 2011-12, Deferral of the Effective Date for Amendments to the Presentation of Reclassifications of Items Out of Accumulated Other Comprehensive Income in Accounting Standards No. 2011-05  (“ASU 2011-12”)
 
On December 23, 2011, FASB issued ASU 2011-12 which defers the requirement in ASU 2011-05 for presentation of reclassification adjustments for each component of accumulated other comprehensive income (“AOCI”) in both net income and other comprehensive income on the face of the financial statements.  This deferral will enable the FASB to address certain concerns raised with regards to presentation requirements for reclassification adjustments.  The amendment is effective at the same time as ASU 2011-05 which is effective for the company for interim and annual periods beginning January 1, 2012.
Securities (Policies)
Transfers of debt securities
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.
Loans and Allowances for Credit Losses (Policies)
Allowances for Credit Losses 
Allowances for Credit Losses

BOK Financial maintains separate allowances for loan losses and for off-balance sheet credit risk related to commitments to extend credit and standby letters of credit.  As discussed in greater detail in Note 7, the Company also has separate accruals related to off-balance sheet credit risk related to residential mortgage loans sold with full or partial recourse and for residential mortgage loans sold to government sponsored agencies under standard representation and warranties.

The allowance for loan losses is assessed by management on a quarterly basis and consists of specific amounts attributed to impaired loans that have not been charged down to amounts we expect to recover, general allowances based on loss rates by loan class for unimpaired loans and non-specific allowances based on general economic conditions and related factors.  Impairment is individually measured for certain impaired loans and collectively measured for all other loans. 
Loans Policy 
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 guidelines.  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 nonaccrual status.  Known information does, however, cause concern as to the borrowers' continued compliance with current repayment terms.  Nonaccrual 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.
Troubled Debt Restructurings 
Troubled Debt Restructurings

The financial impact of troubled debt restructurings primarily consist of specific allowances for credit losses and principal amounts charged off.  Internally risk graded loans that have been modified in troubled debt restructuring generally remain classified as nonaccruing.  Other financial impacts, such as foregone interest, are not material to the financial statements.

Non-risk graded residential mortgage loans that are modified in troubled debt restructurings primarily consist of loans that are guaranteed by U.S. government agencies.  At December 31, 2011, approximately $13 million of the renegotiated residential mortgage loans are currently performing in accordance with the modified terms, $5.8 million are 30 to 89 days past due and $14 million are past due 90 days or more.  Restructured residential mortgage loans guaranteed by agencies of the U.S. government in accordance with agency guidelines represent $29 million of our $33 million portfolio of renegotiated loans.  All renegotiated loans past due 90 days or more are guaranteed by U.S. government agencies.


Securities (Tables)
Trading Securities amortized cost and fair values 
The fair value and net unrealized gain (loss) included in Trading securities is as follows (in thousands):

   
December 31, 2011
  
December 31, 2010
 
   
Fair Value
  
Net Unrealized Gain (Loss)
  
Fair Value
  
Net Unrealized Gain (Loss)
 
Obligations of the U.S. Government
 $22,203  $63  $3,873  $(17)
U.S. agency residential mortgage-backed securities
  12,379   59   27,271   292 
Municipal and other tax-exempt securities
  39,345   652   23,396   (214)
Other trading securities
  2,873   9   927   (2)
Total
 $76,800  $783  $55,467  $59 

Amortized Cost and Fair Value of Investment Securities Categorized as Held-to-Maturity 
The amortized cost and fair values of investment securities are as follows (in thousands):

   
December 31, 2011
 
   
Amortized
  
Carrying
  
Fair
  
Gross Unrealized2
 
   
Cost
  
Value1
  
Value
  
Gain
  
Loss
 
                 
Municipal and other tax-exempt
 $128,697  $128,697  $133,670  $4,975  $(2)
U.S. agency residential mortgage-backed securities – Other
  110,062   121,704   120,536   602   (1,770)
Other debt securities
  188,835   188,835   208,451   19,616   – 
Total
 $427,594  $439,236  $462,657  $25,193  $(1,772)

   
December 31, 2010
 
   
Amortized
  
Fair
  
Gross Unrealized2
 
   
Cost
  
Value
  
Gain
  
Loss
 
              
Municipal and other tax-exempt
 $184,898  $188,577  $3,912  $(233)
U.S. agency residential mortgage-backed securities – Other
  –   –   –   – 
Other debt securities
  154,655   157,528   4,505   (1,632)
Total
 $339,553  $346,105  $8,417  $(1,865)
 
1
Carrying value includes $12 million of unrealized gain, net of amortization, that remains in Accumulated other comprehensive income (“AOCI”) in the Consolidated Balance Sheets at December 31, 2011 related to certain securities transferred during 2011 from the Available for Sale securities portfolio to the Investment securities portfolio.  The Company has the positive intent and ability to hold these securities to maturity.  At the time of transfer, the fair value of these securities totaled $131 million, amortized cost totaled $118 million and the pre-tax unrealized gain totaled $13 million.  No gain or loss was recognized in the Consolidated Statement of Earnings at the time of the transfer.
2
Gross unrealized gains and losses are not recognized in AOCI in the Consolidated Balance Sheets.
 

The amortized cost and fair values of investment securities at December 31, 2011, by contractual maturity, are as shown in the following table (dollars in thousands):

                  
Weighted
 
   
Less than
  
One to
  
Six to
  
Over
     
Average
 
   
One Year
  
Five Years
  
Ten Years
  
Ten Years
  
Total
  
Maturity²
 
                    
Municipal and other tax-exempt:
                  
Amortized cost
 $34,623  $68,029  $21,848  $4,197  $128,697   2.98 
Fair value
  34,942   70,682   23,570   4,476   133,670     
Nominal yield¹
  4.59   4.62   5.50   6.54   4.83     
Other debt securities:
                        
Amortized cost
 $8,651  $28,713  $34,784  $116,687  $188,835   10.00 
Fair value
  8,660   29,546   36,962   133,283   208,451     
Nominal yield
  3.78   5.56   5.58   6.20   5.88     
Total fixed maturity securities:
                        
Amortized cost
 $43,274  $96,742  $56,632  $120,884  $317,532   7.16 
Fair value
  46,602   100,228   60,532   137,759   342,121     
Nominal yield
  4.43   4.90   5.55   6.21   5.45     
Residential mortgage-backed securities:
                        
Carrying value
                 $121,704    3
Fair value
                  120,536     
Nominal yield4
                  2.17     
Total investment securities:
                        
Carrying value
                 $439,236     
Fair value
                  462,657     
Nominal yield
                  4.54     
 
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 2.1 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 Annual and Quarterly Financial Summary – Unaudited following for disclosure of current yields on investment securities portfolio.
 
Available For Sale Securities 
Available for Sale Securities

The amortized cost and fair value of available for sale securities are as follows (in thousands):
   
December 31, 2011
 
   
Amortized
  
Fair
  
Gross Unrealized¹
    
   
Cost
  
Value
  
Gain
  
Loss
  
OTTI²
 
                 
U.S. Treasury
 $1,001  $1,006  $5  $–  $– 
Municipal and other tax-exempt
  66,435   68,837   2,543   (141)  – 
Residential mortgage-backed securities:
                 
U. S. agencies:
                    
FNMA
  5,823,972   5,987,287   163,319   (4)  – 
FHLMC
  2,756,180   2,846,215   90,035   –   – 
GNMA
  647,569   678,924   31,358   (3)  – 
Other
  69,668   75,751   6,083   –   – 
Total U.S. agencies
  9,297,389   9,588,177   290,795   (7)  – 
Privately issued:
                    
Alt-A loans
  168,461   132,242   –   –   (36,219)
Jumbo-A loans
  334,607   286,924   –   (11,096)  (36,587)
Total privately issued
  503,068   419,166   –   (11,096)  (72,806)
Total residential mortgage-backed securities
  9,800,457   10,007,343   290,795   (11,103)  (72,806)
Other debt securities
  36,298   36,495   197   –   – 
Perpetual preferred stock
  19,171   18,446   1,030   (1,755)  – 
Equity securities and mutual funds
  33,843   47,238   13,727   (332)  – 
Total
 $9,957,205  $10,179,365  $308,297  $(13,331) $(72,806)
¹
Gross unrealized gain/loss recognized 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, 2010
 
   
Amortized
  
Fair
  
Gross Unrealized¹
    
   
Cost
  
Value
  
Gain
  
Loss
  
OTTI²
 
                 
Municipal and other tax-exempt
 $72,190  $72,942  $1,172  $(315) $(105)
Residential mortgage-backed securities:
                 
U. S. agencies:
                    
FNMA
  4,791,438   4,925,693   147,024   (12,769)  – 
FHLMC
  2,545,208   2,620,066   83,341   (8,483)  – 
GNMA
  765,046   801,993   37,193   (246)  – 
Other
  92,013   99,157   7,144   –   – 
Total U.S. agencies
  8,193,705   8,446,909   274,702   (21,498)  – 
Privately issued:
                    
Alt-A loans
  220,332   186,674   –   (353)  (33,305)
Jumbo-A loans
  494,098   457,535   923   (14,067)  (23,419)
Total privately issued
  714,430   644,209   923   (14,420)  (56,724)
Total residential mortgage-backed securities
  8,908,135   9,091,118   275,625   (35,918)  (56,724)
Other debt securities
  6,401   6,401   –   –   – 
Perpetual preferred stock
  19,511   22,114   2,603   –   – 
Equity securities and mutual funds
  29,181   43,046   14,192   (327)  – 
Total
 $9,035,418  $9,235,621  $293,592  $(36,560) $(56,829)
¹
Gross unrealized gain/loss recognized 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 December 31, 2011, by contractual maturity, are as shown in the following table (dollars in thousands):

                  
Weighted
 
   
Less than
  
One to
  
Six to
  
Over
     
Average
 
   
One Year
  
Five Years
  
Ten Years
  
Ten Years6
  
Total
  
Maturity5
 
U.S. Treasury:
                  
Amortized cost
 $–  $1,001  $–  $–  $1,001   1.37 
Fair value
  –   1,006   –   –   1,006     
Nominal yield¹
  –   0.55   –   –   0.55     
Municipal and other tax-exempt:
                        
Amortized cost
 $1,009  $8,454  $11,357  $45,615  $66,435   18.98 
Fair value
  1,021   9,238   12,812   45,766   68,837     
Nominal yield¹
  4.04   4.16   4.00   2.69   3.12     
Other debt securities:
                        
Amortized cost
 $–  $30,398  $–  $5,900  $36,298   7.68 
Fair value
  –   30,595   –   5,900   36,495     
Nominal yield¹
  –   1.81   –   1.87   1.82     
Total fixed maturity securities:
                        
Amortized cost
 $1,009  $39,853  $11,357  $51,515  $103,734   14.86 
Fair value
  1,021   40,839   12,812   51,666   106,338     
Nominal yield
  4.04   2.27   4.00   2.60   2.64     
Residential mortgage-backed securities:
                        
Amortized cost
                 $9,800,457   ² 
Fair value
                  10,007,343     
Nominal yield4
                  3.33     
Equity securities and mutual funds:
                        
Amortized cost
                 $53,014   ³ 
Fair value
                  65,684     
Nominal yield
                  0.74     
Total available-for-sale securities:
                        
Amortized cost
                 $9,957,205     
Fair value
                  10,179,365     
Nominal yield
                  3.31     

¹
Calculated on a taxable equivalent basis using a 39% effective tax rate.
²
The average expected lives of residential mortgage-backed securities were 2.1 years based upon current prepayment assumptions.
³
Primarily restricted common stock of U.S. government agencies and preferred stock of corporate issuers with no stated maturity.
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 Annual and Quarterly Financial Summary – Unaudited following for disclosure of 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):

   
Year ended December 31,
 
   
2011
  
2010
  
2009
 
           
Proceeds
 $2,725,760  $2,013,620  $3,242,282 
Gross realized gains
  41,284   26,007   60,710 
Gross realized losses
  7,140   4,125   1,390 
Related federal and state income tax expense
  13,282   8,512   23,075 

In addition to securities that have been reclassified as pledged to creditors, securities with an amortized cost of $4.4 billion and $5.3 billion at December 31, 2011 and 2010, respectively, have been pledged as collateral for repurchase agreements, public and trust funds on deposit and for other purposes, as required by law. The secured parties do not have the right to sell or re-pledge these securities.


Temporarily Impaired Securities as of December 31, 2011
(In thousands)
   
Number
  
Less Than 12 Months
  
12 Months or Longer
  
Total
 
   
of
  
Fair
  
Unrealized
  
Fair
  
Unrealized
  
Fair
  
Unrealized
 
   
Securities
  
Value
  
Loss
  
Value
  
Loss
  
Value
  
Loss
 
Investment:
                     
Municipal and other tax-exempt
  1  $479  $2  $–  $–  $479  $2 
U.S. agency residential mortgage-backed securities – Other
  5   92,571   1,770   –   –   92,571   1,770 
Total investment
  6   93,050   1,772   –   –   93,050   1,772 
                              
Available for sale:
                            
Municipal and other tax-exempt
  26   5,008   7   21,659   134   26,667   141 
Residential mortgage-backed securities:
                            
U. S. agencies:
                            
 FNMA
  2   68,657   4   –   –   68,657   4 
GNMA
  1   2,072   3   –   –   2,072   3 
Total U.S. agencies
  3   70,729   7   –   –   70,729   7 
Privately issued1:
                            
Alt-A loans
  19   –   –   132,242   36,219   132,242   36,219 
Jumbo-A loans
  48   8,142   842   278,781   46,841   286,923   47,683 
Total privately issued
  67   8,142   842   411,023   83,060   419,165   83,902 
Total residential mortgage-backed securities
  70   78,871   849   411,023   83,060   489,894   83,909 
Perpetual preferred stocks
  6   11,147   1,755   –   –   11,147   1,755 
Equity securities and mutual funds
  7   221   5   2,551   327   2,772   332 
Total available for sale
  109  $95,247  $2,616  $435,233  $83,521  $530,480  $86,137 
 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
  19  $–  $–  $132,242  $36,219  $132,242  $36,219 
Jumbo-A loans
  36   3,809   256   202,874   36,331   206,683   36,587 


Temporarily Impaired Securities as of December 31, 2010
(In thousands)
   
Number
  
Less Than 12 Months
  
12 Months or Longer
  
Total
 
   
of
  
Fair
  
Unrealized
  
Fair
  
Unrealized
  
Fair
  
Unrealized
 
   
Securities
  
Value
  
Loss
  
Value
  
Loss
  
Value
  
Loss
 
Investment:
                     
Municipal and other tax- exempt
  37  $12,482  $211  $786  $22  $13,268  $233 
Other
  15   80,698   1,632   –   –   80,698   1,632 
Total investment
  52   93,180   1,843   786   22   93,966   1,865 
                              
Available for sale:
                            
Municipal and other tax-exempt1
  42   22,271   171   25,235   249   47,506   420 
Residential mortgage-backed securities:
                            
U. S. agencies:
                            
FNMA
  26   1,099,710   12,769   –   –   1,099,710   12,769 
FHLMC
  12   491,776   8,483   –   –   491,776   8,483 
GNMA
  3   5,681   246   –   –   5,681   246 
Total U.S. agencies
  41   1,597,167   21,498   –   –   1,597,167   21,498 
Privately issued1:
                            
Alt-A loans
  22   –   –   186,675   33,658   186,675   33,658 
Jumbo-A loans
  53   –   –   417,917   37,486   417,917   37,486 
Total privately issued
  75   –   –   604,592   71,144   604,592   71,144 
Total residential mortgage-backed securities
  116   1,597,167   21,498   604,592   71,144   2,201,759   92,642 
Equity securities and mutual funds
  2   –   –   2,878   327   2,878   327 
Total available for sale
  160   1,619,438   21,669   632,705   71,720   2,252,143   93,389 
¹
Includes the following securities for which an unrealized loss remains in OCI after an other-than-temporary credit loss has been recognized in income:
Municipal and other tax-exempt
  11  $10,713  $103  $–  $–  $10,713  $105 
Alt-A loans
  19   –   –   172,153   33,305   172,153   33,305 
Jumbo-A loans
  25   –   –   166,401   23,419   166,401   23,419 

 
 
On a quarterly basis, the Company performs separate evaluations of impaired debt and equity 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.  For 2011 and 2010, the Company did not intend to sell and it is more likely than not that the Company will not be required to sell impaired securities before fair value recovers to amortized cost, which may be maturity.  During 2009, the Company recognized a $1.3 million other-than-temporary charge on $91 million of impaired debt securities that it intended to sell and that were subsequently sold during that year.  At December 31, 2011 and 2010, the Company did not intend to sell and it is more-likely-than-not that the Company will not be required to sell impaired securities before fair value recovers to amortized cost, 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 December 31, 2011 or December 31, 2010.

As of December 31, 2011, 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
 
   
Amortized
  
Fair
  
Amortized
  
Fair
  
Amortized
  
Fair
  
Amortized
  
Fair
  
Amortized
  
Fair
  
Amortized
  
Fair
 
   
Cost
  
Value
  
Cost
  
Value
  
Cost
  
Value
  
Cost
  
Value
  
Cost
  
Value
  
Cost
  
Value
 
Investment:
                                    
Municipal and other  tax-exempt
 $–  $–  $50,468  $52,224  $25,892  $26,729  $–  $–  $52,337  $54,717  $128,697  $133,670 
Residential mortgage-backed securities – Other
  121,704   120,536   –   –   –   –   –   –   –   –   121,704   120,536 
Other debt securities
  –   –   180,334   199,830   600   600   –   –   7,901   8,021   188,835   208,451 
Total
 $121,704  $120,536  $230,802  $252,054  $26,492  $27,329  $–  $–  $60,238  $62,738  $439,236  $462,657 
                                                  
Available for Sale:
                                                
U.S. Treasury
 $1,001  $1,006  $–  $–  $–  $–  $–  $–  $–  $–  $1,001  $1,006 
Municipal and other tax-exempt
  –   –   40,419   42,574   11,579   11,692   13,026   13,026   1,411   1,545   66,435   68,837 
Residential mortgage-backed securities:
                                                
U. S. agencies:
                                                
FNMA
  5,823,972   5,987,287   –   –   –   –   –   –   –   –   5,823,972   5,987,287 
FHLMC
  2,756,180   2,846,215   –   –   –   –   –   –   –   –   2,756,180   2,846,215 
GNMA
  647,569   678,924   –   –   –   –   –   –   –   –   647,569   678,924 
Other
  69,668   75,751   –   –   –   –   –   –   –   –   69,668   75,751 
Total U.S. agencies
  9,297,389   9,588,177   –   –   –   –   –   –   –   –   9,297,389   9,588,177 
Privately issued:
                                                
Alt-A loans
  –   –   –   –   –   –   168,461   132,242   –   –   168,461   132,242 
Jumbo-A loans
  –   –   23,221   20,654   19,390   17,167   291,996   249,103   –   –   334,607   286,924 
Total privately issued
  –   –   23,221   20,654   19,390   17,167   460,457   381,345   –   –   503,068   419,166 
Total residential  mortgage-backed securities
  9,297,389   9,588,177   23,221   20,654   19,390   17,167   460,457   381,345    –    –   9,800,457   10,007,343 
Other debt securities
  –   –   5,900   5,900   30,398   30,595   –   –           36,298   36,495 
Perpetual preferred stock
  –   –   –   –   19,171   18,446   –   –   –   –   19,171   18,446 
Equity securities and mutual funds
  –   –   –   –   –   –   –   –   33,843   47,238   33,843   47,238 
Total
 $9,298,390  $9,589,183  $69,540  $69,128  $80,538  $77,900  $473,483  $394,371  $35,254  $48,783  $9,957,205  $10,179,365 
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.

Distribution of Amortized Cost And Fair Value 
A distribution of the amortized cost (after recognition of the other-than-temporary impairment) and fair value by credit rating for our private-label residential mortgage-backed securities is as follows (in thousands):

            
Credit Losses Recognized
 
            
Year ended
December 31, 2011
  
Life-to-date
 
   
Number of Securities
  
Amortized
Cost
  
Fair Value
  
Number of
Securities
  
Amount
  
Number of Securities
  
Amount
 
Alt-A loans:
                     
Below Investment Grade
  19  $168,461  $132,242   18  $8,209   19  $49,931 
                              
Jumbo-A loans:
                            
AAA – AA
  3   23,221   20,654   –   –   –   – 
A – BBB
  2   19,390   17,167   –   –   –   – 
Below Investment Grade
  43   291,996   249,103   32   13,740   36   23,623 
Total Jumbo-A loans
  48   334,607   286,924   32   13,740   36   23,623 
                              
Total
  67  $503,068  $419,166   50  $21,949   55  $73,554 
Composition of net impairment losses recognized in earnings 
The following represents the composition of net impairment losses recognized in earnings (in thousands):

   
Year Ended December 31,
 
   
2011
  
2010
  
2009
 
OTTI related to perpetual preferred stocks
 $–  $–  $(8,008)
OTTI related to equity securities and mutual funds
  –   (327)  – 
OTTI on debt securities due to change in intent to sell
  –   –   (1,263)
Total OTTI on debt securities not intended for sale
  (10,578)  (29,633)  (119,883)
Portion of loss recognized in (reclassified from) other comprehensive income
  (12,929)  2,151    94,741 
Net impairment losses recognized in earnings related to credit losses on debt securities not intended for sale
  (23,507)  (27,482)  (25,142)
Total impairment losses recognized in earnings
 $(23,507) $(27,809) $(34,413)

Roll Forward of Amount of Credit-Related Other-than-temporary Impairment Recognized in Earnings 
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):

   
Year Ended December 31,
 
   
2011
  
2010
 
Balance of credit-related OTTI recognized on available for sale debt securities, beginning of period
 $52,624  $25,142 
Additions for credit-related OTTI not previously recognized
  3,368   3,514 
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
  20,139   23,968 
Balance of credit-related OTTI recognized on available for sale debt securities, end of period
 $76,131  $52,624 

Fair value and net unrealized gain (loss) included in Fair value option securities 
The fair value and net unrealized gain (loss) included in Fair value option securities is as follows (in thousands):

   
December 31, 2011
  
December 31, 2010
 
   
Fair Value
  
Net Unrealized Gain (Loss)
  
Fair Value
  
Net Unrealized Gain (Loss)
 
U.S. agency residential mortgage-backed securities
 $626,109  $19,233  $428,021  $(5,641)
Corporate debt securities
  25,117   18   –   – 
Total
 $651,226  $19,251  $428,021  $(5,641)
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 December 31, 2011 (in thousands):
 
   
Gross Basis
  
Net Basis²
 
   
Assets
  
Liabilities
  
Assets
  
Liabilities
 
   
Notional¹
  
Fair Value
  
Notional¹
  
Fair Value
  
Fair Value
  
Fair Value
 
Customer risk management programs:
                  
Interest rate contracts3
 $10,391,244  $182,450  $10,324,244  $181,102  $149,780  $148,432 
Energy contracts
  1,554,400   158,625   1,799,367   171,050   62,945   75,370 
Agricultural contracts
  146,252   4,761   148,924   4,680   782   701 
Foreign exchange contracts
  73,153   73,153   72,928   72,928   73,153   72,928 
Equity options
  208,647   12,508   208,647   12,508   12,508   12,508 
Total customer derivatives before cash collateral
  12,373,696   431,497   12,554,110   442,268   299,168   309,939 
Less: cash collateral
  –   –   –   –   (11,690)  (73,712)
Total customer derivatives
  12,373,696   431,497   12,554,110   442,268   287,478   236,227 
                          
Interest rate risk management programs
  44,000   6,381   25,000   295   6,381   295 
Total derivative contracts
 $12,417,696  $437,878  $12,579,110  $442,563  $293,859  $236,522 
¹
Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.
²
Derivative contracts are recorded on a net basis in the balance sheet in recognition of master netting agreements that enable the Company to settle all derivative positions with a given counterparty in total and to offset the net derivative position with the related cash collateral.
3
Includes interest rate swaps used by borrowers to modify interest rate terms of their loans and to be announced residential mortgage-backed securities used by mortgage banking customers to hedge their loan production.

 
The following table summarizes the fair values of derivative contracts recorded as “derivative contracts” assets and liabilities in the balance sheet at December 31, 2010 (in thousands):
 
   
Gross Basis
  
Net Basis²
 
   
Assets
  
Liabilities
  
Assets
  
Liabilities
 
   
Notional¹
  
Fair Value
  
Notional¹
  
Fair Value
  
Fair Value
  
Fair Value
 
Customer risk management programs:
                  
Interest rate contracts3
 $11,664,409  $235,961  $11,524,077  $233,421  $141,279  $138,739 
Energy contracts
  1,914,519   188,655   2,103,923   191,075   76,746   79,166 
Agricultural contracts
  183,250   10,616   186,709   10,534   4,226   4,144 
Foreign exchange contracts
  45,014   45,014   45,014   45,014   45,014   45,014 
Equity options
  160,535   16,247   160,535   16,247   16,247   16,247 
Total customer derivatives before cash collateral
  13,967,727   496,493   14,020,258   496,291   283,512   283,310 
Less: cash collateral
  –   –   –   –   (15,017)  (68,987)
Total customer derivatives
  13,967,727   496,493   14,020,258   496,291   268,495   214,323 
                          
Interest rate risk management programs
  124,000   1,950   17,977   1,097   1,950   1,097 
Total derivative contracts
 $14,091,727  $498,443  $14,038,235  $497,388  $270,445  $215,420 
¹
Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.
²
Derivative contracts are recorded on a net basis in the balance sheet in recognition of master netting agreements that enable the Company to settle all derivative positions with a given counterparty in total and to offset the net derivative position with the related cash collateral.
3
Includes interest rate swaps used by borrowers to modify interest rate terms of their loans and to be announced residential mortgage-backed securities used by mortgage banking customers to hedge their loan production.

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):
   
Year ended December 31,
 
   
2011
  
2010
 
   
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
 $(854) $–  $2,784  $– 
Energy contracts
  5,262   –   7,951   – 
Agriculture contracts
  341   –   629   – 
Foreign exchange contracts
  565   –   375   – 
Equity options
  –   –   –   – 
Total customer derivatives
  5,314   –   11,739   – 
Interest rate risk management programs
  –   2,526   –   3,032 
Total derivative contracts
 $5,314  $2,526  $11,739  $3,032 

Loans and Allowances for Credit Losses (Tables)
Schedule of the components of loan portfolio 
The portfolio segments of the loan portfolio are as follows (in thousands):

   
December 31,
 
   
2011
  
2010
 
   
Fixed
  
Variable
  
Non-
     
Fixed
  
Variable
  
Non-
    
   
Rate
  
Rate
  
accrual
  
Total
  
Rate
  
Rate
  
accrual
  
Total
 
                          
Commercial
 $3,272,862  $3,229,781  $68,811  $6,571,454  $2,883,905  $3,011,636  $38,455  $5,933,996 
Commercial real estate
  887,923   1,292,793   99,193   2,279,909   829,836   1,297,148   150,366   2,277,350 
Residential mortgage
  992,556   948,138   29,767   1,970,461   851,048   939,774   37,426   1,828,248 
Consumer
  241,955   202,449   3,515   447,919   369,364   229,511   4,567   603,442 
Total
 $5,395,296  $5,673,161  $201,286  $11,269,743  $4,934,153  $5,478,069  $230,814  $10,643,036 
Accruing loans past due (90 days)1
             $2,496              $7,966 
Foregone interest on nonaccrual loans
             $11,726              $16,818 
1  
Excludes residential mortgage loans guaranteed by agencies of the U.S. government

Schedule of Allowance For Loan Losses And Recorded Investment by Impairment Methodology 
 The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment measurement method at December 31, 2011 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
 $6,502,695  $81,907  $68,759  $1,536  $6,571,454  $83,443 
Commercial real estate
  2,180,716   63,092   99,193   3,942   2,279,909   67,034 
Residential mortgage
  1,963,020   38,909   7,441   298   1,970,461   39,207 
Consumer
  446,823   17,447   1,096   –   447,919   17,447 
Total
  11,093,254   201,355   176,489   5,776   11,269,743   207,131 
                          
Nonspecific allowance
  –   –   –   –   –   46,350 
                          
Total
 $11,093,254  $201,355  $176,489  $5,776  $11,269,743  $253,481 

The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment measurement method at December 31, 2010 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
 $5,895,674  $102,565  $38,322  $2,066  $5,933,996  $104,631 
Commercial real estate
  2,126,984   94,502   150,366   4,207   2,277,350   98,709 
Residential mortgage
  1,816,184   49,500   12,064   781   1,828,248   50,281 
Consumer
  601,691   12,536   1,751   78   603,442   12,614 
Total
  10,440,533   259,103   202,503   7,132   10,643,036   266,235 
                          
Nonspecific allowance
  –   –   –   –   –   26,736 
                          
Total
 $10,440,533  $259,103  $202,503  $7,132  $10,643,036  $292,971 



The activity in the combined allowance for loan losses and off-balance sheet credit losses related to loan commitments and standby letters of credit by portfolio segments for the year ended December 31, 2011 is summarized as follows (in thousands):

   
Commercial
  
Commercial Real Estate
  
Residential Mortgage
  
Consumer
  
Nonspecific allowance
  
Total
 
                    
Allowance for loans losses:
                  
Beginning balance
 $104,631  $98,709  $50,281  $12,614  $26,736  $292,971 
Provision for (reduction of) allowance for loan losses
  (13,830)  (18,482)  699   10,959   19,614   (1,040)
Loans charged off
  (14,836)  (15,973)  (14,107)  (11,884)  –   (56,800)
Recoveries
  7,478   2,780   2,334   5,758   –   18,350 
Ending balance
 $83,443  $67,034  $39,207  $17,447  $46,350  $253,481 
Allowance for off-balance sheet credit losses:
                        
Beginning balance
 $13,456  $443  $131  $241  $–  $14,271 
Provision for (reduction of) allowance for off-balance sheet credit losses
  (5,550)  807   (40)  (227)  –   (5,010)
Ending balance
 $7,906  $1,250  $91  $14  $–  $9,261 
                          
Combined provision for (reduction of) allowances for credit losses
 $(19,380) $(17,675) $659  $10,732  $19,614  $(6,050)

The activity in the combined allowance for loan losses and off-balance sheet credit losses related to loan commitments and standby letters of credit is summarized as follows (in thousands):

   
Year ended December 31,
 
   
2010
  
2009
 
Allowance for loans losses:
      
Beginning balance
 $292,095  $233,236 
Provision for loan losses
  105,256   196,678 
Loans charged off
  (123,988)  (148,499)
Recoveries
  19,608   10,680 
Ending balance
 $292,971  $292,095 
Allowance for loans off-balance sheet credit losses:
        
Beginning balance
 $$14,388  $15,166 
Reduction of the allowance for off-balance sheet credit losses
  (117)  (778)
Ending balance
 $14,271  $14,388 
          
Total provision for credit losses
 $105,139  $195,900 
Schedule Of Allowance For Loan Losses and Recorded Investment By Portfolio Segment For Risk Graded and Non-risk Graded Loans 
The following table summarizes the Company's loan portfolio at December 31, 2011 by loan class and the risk grade categories (in thousands):
 
   
Internally Risk Graded
  
Non-Graded
    
   
Performing
  
Potential Problem
  
Nonaccrual
  
Performing
  
Nonaccrual
  
Total
 
                    
Commercial:
                  
Energy
 $2,013,866  $1,417  $336  $–  $–  $2,015,619 
Services
  1,696,883   31,338   16,968   –   –   1,745,189 
Wholesale/retail
  907,648   34,156   21,180   –   –   962,984 
Manufacturing
  325,393   2,390   23,051   –   –   350,834 
Healthcare
  967,581   3,414   5,486   –   –   976,481 
Integrated food services
  207,982   756   –   –   –   208,738 
Other commercial and industrial
  291,393   10   1,738   18,416   52   311,609 
Total commercial
  6,410,746   73,481   68,759   18,416   52   6,571,454 
                          
Commercial real estate:
                        
Construction and land development
  238,362   27,244   61,874   –   –   327,480 
Retail
  499,636   3,244   6,863   –   –   509,743 
Office
  382,503   12,548   11,457   –   –   406,508 
Multifamily
  356,927   8,079   3,513   –   –   368,519 
Industrial
  277,453   280   –   –   –   277,733 
Other commercial real estate
  358,597   15,843   15,486   –   –   389,926 
Total commercial real estate
  2,113,478   67,238   99,193   –   –   2,279,909 
                          
Residential mortgage:
                        
Permanent mortgage
  291,155   15,879   7,441   817,921   17,925   1,150,321 
Permanent mortgages guaranteed by U.S. government agencies
  –   –   –   184,973   –   184,973 
Home equity
  –   –   –   630,766   4,401   635,167 
Total residential mortgage
  291,155   15,879   7,441   1,633,660   22,326   1,970,461 
                          
Consumer:
                        
Indirect automobile
  –   –   –   102,955   2,194   105,149 
Other consumer
  211,226   3,949   1,096   126,274   225   342,770 
Total consumer
  211,226   3,949   1,096   229,229   2,419   447,919 
                          
Total
 $9,026,605  $160,547  $176,489  $1,881,305  $24,797  $11,269,743 

 

The following table summarizes the Company's loan portfolio at December 31, 2010 by loan class and risk grade categories (in thousands):
 
   
Internally Risk Graded
  
Non-Graded
    
   
Performing
  
Potential Problem
  
Nonaccrual
  
Performing
  
Nonaccrual
  
Total
 
                    
Commercial:
                  
Energy
 $1,704,401  $6,543  $465  $–  $–  $1,711,409 
Services
  1,531,239   30,420   19,262   –   –   1,580,921 
Wholesale/retail
  956,397   45,363   8,486   –   –   1,010,246 
Manufacturing
  319,075   4,000   2,116   –   –   325,191 
Healthcare
  801,525   4,566   3,534   –   –   809,625 
Integrated food services
  202,885   1,385   13   –   –   204,283 
Other commercial and industrial
  267,949   108   4,446   19,685   133   292,321 
Total commercial
  5,783,471   92,385   38,322   19,685   133   5,933,996 
                          
Commercial real estate:
                        
Construction and land development
  326,769   21,516   99,579   –   –   447,864 
Retail
  395,094   5,468   4,978   –   –   405,540 
Office
  420,899   16,897   19,654   –   –   457,450 
Multifamily
  355,733   6,784   6,725   –   –   369,242 
Industrial
  177,712   294   4,087   –   –   182,093 
Other commercial real estate
  390,969   8,849   15,343   –   –   415,161 
Total commercial real estate
  2,067,176   59,808   150,366   –   –   2,277,350 
                          
Residential mortgage:
                        
Permanent mortgage
  420,407   19,403   12,064   730,638   20,047   1,274,944 
Permanent mortgages guaranteed by U.S. government agencies
  –   –   –   72,385   –   72,385 
Home equity
  –   –   –   547,989   5,315   553,304 
Total residential mortgage
  420,407   19,403   12,064   1,351,012   25,362   1,828,248 
                          
Consumer:
                        
Indirect automobile
  –   –   –   237,050   2,526   239,576 
Other consumer
  240,243   4,356   1,751   117,226   290   363,866 
Total consumer
  240,243   4,356   1,751   354,276   2,816   603,442 
                          
Total
 $8,511,297  $175,952  $202,503  $1,724,973  $28,311  $10,643,036 
Summary of Risk-Graded Impaired Loans 
A summary of internally risk graded impaired loans follows (in thousands):
 
   
As of December 31, 2011
  
Year ended
 
      
Recorded Investment
     
December 31, 2011
 
   
Unpaid
Principal
Balance
  
Total
  
With No
Allowance
  
With Allowance
  
Related Allowance
  
Average
Recorded
Investment
  
Interest
Income
Recognized
 
                       
Commercial:
                     
Energy
 $336  $336  $336  $–  $–  $401  $– 
Services
  26,916   16,968   16,200   768   360   18,115   – 
Wholesale/retail
  24,432   21,180   19,702   1,478   1,102   14,833   – 
Manufacturing
  26,186   23,051   23,051   –   –   12,584   – 
Healthcare
  6,825   5,486   5,412   74   74   4,510   – 
Integrated food services
  –   –   –   –   –   7   – 
Other commercial and industrial
  9,237   1,738   1,738   –   –   3,092   – 
Total commercial
  93,932   68,759   66,439   2,320   1,536   53,542   – 
                              
Commercial real estate:
                            
Construction and land development
  98,053   61,874   56,740   5,134   1,777   80,727   – 
Retail
  8,645   6,863   4,373   2,490   1,062   5,921   – 
Office
  14,588   11,457   9,567   1,890   291   15,556   – 
Multifamily
  3,512   3,513   3,513   –   –   5,119   – 
Industrial
  –   –   –   –   –   2,044   – 
Other real estate loans
  16,702   15,486   7,887   7,599   812   15,415   – 
Total commercial real estate
  141,500   99,193   82,080   17,113   3,942   124,782   – 
                              
Residential mortgage:
                            
Permanent mortgage
  8,697   7,441   4,980   2,461   298   9,753   – 
Home equity
  –   –   –   –   –   –   – 
Total residential mortgage
  8,697   7,441   4,980   2,461   298   9,753   – 
                              
Consumer:
                            
Indirect automobile
  –   –   –   –   –   –   – 
Other consumer
  1,727   1,096   1,096   –   –   1,424   – 
Total consumer
  1,727   1,096   1,096   –   –   1,424   – 
                              
Total
 $245,856  $176,489  $154,595  $21,894  $5,776  $189,501  $– 

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


A summary of internally risk graded impaired loans at December 31, 2010 follows (in thousands):

      
Recorded Investment
    
   
Unpaid
Principal
Balance
  
Total
  
With No
Allowance
  
With Allowance
  
Related Allowance
 
                 
Commercial:
               
Energy
 $559  $465  $404  $61  $60 
Services
  28,579   19,262   15,985   3,277   1,227 
Wholesale/retail
  14,717   8,486   7,562   924   684 
Manufacturing
  5,811   2,116   2,116   –   – 
Healthcare
  4,701   3,534   2,743   791   95 
Integrated food services
  172   13   13   –   – 
Other commercial and industrial
  13,007   4,446   4,446   –   – 
Total commercial
  67,546   38,322   33,269   5,053   2,066 
                      
Commercial real estate:
                    
Construction and land development
  138,922   99,579   84,959   14,620   2,428 
Retail
  6,111   4,978   1,968   3,010   514 
Office
  25,702   19,654   18,798   856   106 
Multifamily
  24,368   6,725   6,129   596   115 
Industrial
  4,087   4,087   –   4,087   723 
Other real estate loans
  17,129   15,343   13,802   1,541   321 
Total commercial real estate
  216,319   150,366   125,656   24,710   4,207 
                      
Residential mortgage:
                    
Permanent mortgage
  15,258   12,064   8,574   3,490   781 
Home equity
  –   –   –   –   – 
Total residential mortgage
  15,258   12,064   8,574   3,490   781 
                      
Consumer:
                    
Indirect automobile
  –   –   –   –   – 
Other consumer
  1,909   1,751   1,506   245   78 
Total consumer
  1,909   1,751   1,506   245   78 
                      
Total
 $301,032  $202,503  $169,005  $33,498  $7,132 


Investments in impaired loans were as follows (in thousands):

   
December 31,
 
   
2011
  
2010
  
2009
 
           
Investment in impaired loans
 $176,489  $202,503  $$316,666 
Impaired loans with specific allowance for loss
  21,894   33,498   204,076 
Specific allowance balance
  5,776   7,132   36,168 
Impaired loans with no specific allowance for loss
  154,595   169,005   112,590 
Average recorded investment in impaired loans
  189,501   262,368   327,935 
Summary of loans by aging status 
 
   
Internally Risk Graded
  
Non-Graded
    
   
Performing
  
Potential Problem
  
Nonaccrual
  
Performing
  
Nonaccrual
  
Total
 
                    
Commercial:
                  
Energy
 $1,704,401  $6,543  $465  $–  $–  $1,711,409 
Services
  1,531,239   30,420   19,262   –   –   1,580,921 
Wholesale/retail
  956,397   45,363   8,486   –   –   1,010,246 
Manufacturing
  319,075   4,000   2,116   –   –   325,191 
Healthcare
  801,525   4,566   3,534   –   –   809,625 
Integrated food services
  202,885   1,385   13   –   –   204,283 
Other commercial and industrial
  267,949   108   4,446   19,685   133   292,321 
Total commercial
  5,783,471   92,385   38,322   19,685   133   5,933,996 
                          
Commercial real estate:
                        
Construction and land development
  326,769   21,516   99,579   –   –   447,864 
Retail
  395,094   5,468   4,978   –   –   405,540 
Office
  420,899   16,897   19,654   –   –   457,450 
Multifamily
  355,733   6,784   6,725   –   –   369,242 
Industrial
  177,712   294   4,087   –   –   182,093 
Other commercial real estate
  390,969   8,849   15,343   –   –   415,161 
Total commercial real estate
  2,067,176   59,808   150,366   –   –   2,277,350 
                          
Residential mortgage:
                        
Permanent mortgage
  420,407   19,403   12,064   730,638   20,047   1,274,944 
Permanent mortgages guaranteed by U.S. government agencies
  –   –   –   72,385   –   72,385 
Home equity
  –   –   –   547,989   5,315   553,304 
Total residential mortgage
  420,407   19,403   12,064   1,351,012   25,362   1,828,248 
                          
Consumer:
                        
Indirect automobile
  –   –   –   237,050   2,526   239,576 
Other consumer
  240,243   4,356   1,751   117,226   290   363,866 
Total consumer
  240,243   4,356   1,751   354,276   2,816   603,442 
                          
Total
 $8,511,297  $175,952  $202,503  $1,724,973  $28,311  $10,643,036 
Troubled debt restructurings of internally risk graded loans 
Troubled debt restructurings of internally risk graded impaired loans at December 31, 2011 were as follows (in thousands):

   
As of December 31, 2011
  
Amounts Charged-Off
 
   
Recorded
Investment
  
Performing
in Accordance With Modified Terms
  
Not Performing
in Accordance
With Modified Terms
  
Specific
Allowance
  
During the Year Ended December 31, 2011
 
                 
Commercial:
               
Energy
 $–  $–  $–  $–  $– 
Services
  3,529   1,907   1,622   –   301 
Wholesale/retail
  1,739   961   778   24   – 
Manufacturing
  –   –   –   –   – 
Healthcare
  –   –   –   –   – 
Integrated food services
  –   –   –   –   – 
Other commercial and industrial
  960   –   960   –   – 
Total commercial
  6,228   2,868   3,360   24   301 
                      
Commercial real estate:
                    
Construction and land development
  25,890   3,585   22,305   1,577   1,104 
Retail
  1,070   –   1,070   –   882 
Office
  2,496   1,134   1,362   215   527 
Multifamily
  –   –   –   –   – 
Industrial
  –   –   –   –   – 
Other real estate loans
  8,171   387   7,784   662   86 
Total commercial real estate
  37,627   5,106   32,521   2,454   2,599 
                      
Residential mortgage:
                    
Permanent mortgage
  4,103   1,396   2,707   282   54 
Home equity
  –   –   –   –   – 
Total residential mortgage
  4,103   1,396   2,707   282   54 
                      
Consumer:
                    
Indirect automobile
  –   –   –   –   – 
Other consumer
  168   168   –   –   – 
Total consumer
  168   168   –   –   – 
                      
Total
 $48,126  $9,538  $38,588  $2,760  $2,954 
Mortgage Banking Activities (Tables)
Components of Residential Mortgage Loans Held For Sale 
The unpaid principal balance of residential mortgage loans held for sale, notional amounts of derivative contracts related to mortgage loan 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):
 
   
December 31, 2011
  
December 31, 2010
 
   
Notional /
Unpaid Principal Balance
  
Fair Value
  
Notional / Unpaid Principal Balance
  
Fair Value
 
              
Residential mortgage loans held for sale
 $177,319  $184,816  $253,778  $254,669 
Residential mortgage loan commitments
  189,770   6,597   138,870   2,251 
Forward sales contracts
  349,447   (3,288)  396,422   6,493 
       $188,125      $263,413 

 
Mortgage banking revenue was as follows (in thousands):

   
Year ended December 31,
 
   
2011
  
2010
  
2009
 
Originating and marketing revenue:
         
Residential mortgages loan held for sale
 $57,418  $45,243  $40,849 
Residential mortgage loan commitments
  4,345   1,755   (1,673)
Forward sales contracts
  (9,781)  2,440   5,786 
Total originating and marketing revenue
  51,982   49,438   44,962 
Servicing revenue
  39,661   38,162   20,018 
Total mortgage banking revenue
 $91,643  $87,600  $64,980 
Summary of Mortgage Servicing Rights 
The following represents a summary of mortgage servicing rights (Dollars in thousands):

   
Dec. 31, 2011
  
Dec. 31, 2010
  
Dec. 31, 2009
 
Number of residential mortgage loans serviced for others
  95,841   96,443   61,199 
Outstanding principal balance of residential mortgage loans serviced for others
 $11,300,986  $11,194,582  $6,603,132 
Weighted average interest rate
  5.19%  5.44%  5.83%
Remaining term (in months)
  290   292   321 
Activity in Capitalized Mortgage Servicing Rights 
Activity in capitalized mortgage servicing rights and related valuation allowance during 2009, 2010 and 2011 is as follows (in thousands):

   
Purchased
  
Originated
  
Total
 
Balance at December 31, 2008
 $6,353  $36,399  $42,752 
Additions, net
  –   39,869   39,869 
Change in fair value due to loan runoff
  (2,526)  (18,395)  (20,921)
Change in fair value due to market changes
  4,001   8,123   12,124 
Balance at December 31, 2009
 $7,828  $65,996  $73,824 
Additions, net
  31,321   27,603   58,924 
Change in fair value due to loan runoff
  (6,791)  (13,895)  (20,686)
Gain on purchase of mortgage servicing rights
  11,832   –   11,832 
Change in fair value due to market changes
  (6,290)  (1,881)  (8,171)
Balance at December 31, 2010
 $37,900  $77,823  $115,723 
Additions, net
  –   26,251   26,251 
Change in fair value due to loan runoff
  (4,699)  (10,045)  (14,744)
Change in fair value due to market changes
  (14,298)  (26,149)  (40,447)
Balance at December 31, 2011
 $18,903  $67,880  $86,783 

 Fair value is determined by discounting the projected net cash flows. Significant assumptions considered significant unobservable inputs used to determine fair value are:

   
December 31, 2011
  
December 31, 2010
 
Discount rate – risk-free rate plus a market premium
  10.34%  10.36%
Prepayment rate – based upon loan interest rate, original term and loan type
  10.88% - 49.68%  6.53% - 23.03%
Loan servicing costs – annually per loan based upon loan type
 $55 - $105  $35 - $60 
Escrow earnings rate – indexed to rates paid on deposit accounts with comparable average life
  1.21%  2.21%
Stratification of Loan Servicing Portfolio 
Stratification of the mortgage loan-servicing portfolio, outstanding principal of loans serviced and weighted average prepayment rate by interest rate at December 31, 2011 follows (in thousands):

   
< 4.50%
   4.50% - 5.49%  5.50% - 6.49% 
> 6.49%
  
Total
                  
Fair value
 $19,911  $50,637  $12,736  $3,499  $86,783 
 
Outstanding principal of loans serviced for others
 $2,125,412  $5,227,723  $2,822,476  $1,125,375  $11,300,986 
 
Weighted average prepayment rate1
  10.88%  14.42%  39.40%  49.68%  23.50%
1  
Annual prepayment estimates based upon loan interest rate, original term and loan type
 
Aging Status of Mortgage Loans Serviced For Others 
The aging status of our mortgage loans serviced for others by investor at December 31, 2011 follows (in thousands):

      
Past Due
    
   
Current
  
30 to 59
Days
  
60 to 89 Days
  
90 Days or More
  
Total
 
FHLMC
 $5,254,662  $56,789  $15,965  $57,076  $5,384,492 
FNMA
  1,564,151   27,623   8,786   26,871   1,627,431 
GNMA
  3,593,523   159,869   40,185   38,508   3,832,085 
Other
  425,770   14,480   3,526   13,202   456,978 
Total
 $10,838,106  $258,761  $68,462  $135,657  $11,300,986 
Activity in Allowance for Losses On Loans Sold With Recourse 
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):

   
2011
  
2010
  
2009
 
Beginning balance
 $16,667  $13,781  $8,767 
Provision for recourse losses
  8,611   7,895   12,210 
Loans charged off, net
  (6,595)  (5,009)  (7,196)
Ending balance
 $18,683  $$16,667  $13,781 
Premises and Equipment (Tables)
Premises and Equipment
Premises and equipment at December 31 are summarized as follows (in thousands):

   
December 31,
 
   
2011
  
2010
 
        
Land
 $73,638  $72,643 
Buildings and improvements
  232,440   226,234 
Software
  82,801   69,303 
Furniture and equipment
  141,743   133,732 
Subtotal
  530,622   501,912 
Less accumulated depreciation
  267,887   236,447 
Total
 $262,735  $265,465 
Goodwill and Intangible Assets (Tables)
Expected Amortization Expense for Intangible Assets 
Expected amortization expense for intangible assets that will continue to be amortized (in thousands):

   
Core
  
Other
    
   
Deposit
  
Identifiable
    
   
Premiums
  
Intangible Assets
  
Total
 
           
2012
 $815  $1,385  $2,200 
2013
  485   1,061   1,546 
2014
  432   334   766 
2015
  392   334   726 
2016
  248   334   582 
Thereafter
  22   4,377   4,399 
   $2,394  $7,825  $10,219 
Net Amortized Cost of Goodwill and Identifiable Intangible Assets by Geographic Markets 
The net amortized cost of goodwill and identifiable intangible assets assigned to the Company's geographic markets as follows (in thousands):
   
December 31,
 
   
2011
  
2010
 
Core deposit premiums:
      
Texas
 $1,817  $3,408 
Colorado
  548   1,058 
Arizona
  29   156 
Total core deposit premiums
 $2,394  $4,622 
          
Other identifiable intangible assets:
        
Oklahoma
 $5,548  $6,048 
Colorado
  1,487   2,343 
Kansas/Missouri
  790   790 
Total other identifiable intangible assets
 $7,825  $9,181 
          
Goodwill:
        
Oklahoma
 $8,173  $8,173 
Texas
  240,122   240,122 
New Mexico
  15,273   15,273 
Colorado
  55,611   55,611 
Arizona
  16,422   16,422 
Total goodwill
 $335,601  $335,601 
Carry Value of Goodwill by Operating Segment 
The carrying value of goodwill by operating segment as of December 31, 2011 and 2010 is as follows (in thousands):

   
Commercial
  
Consumer
  
Wealth
Management
  
Total
 
Goodwill
 $266,728  $39,251  $29,850  $335,829 
Accumulated Impairment
  –   (228)  –   (228)
Net goodwill balance
 $266,728  $39,023  $29,850  $335,601 
Deposits (Tables)
Interest Expense on Deposits
Interest expense on deposits is summarized as follows (in thousands):
 
   
2011
  
2010
  
2009
 
Transaction deposits
 $23,415  $38,886  $51,607 
Savings
  719   719   614 
Time:
            
Certificates of deposits under $100,000
  26,476   31,210    57,486 
Certificates of deposits $100,000 and over
  21,175   19,235    37,193 
Other time deposits
  17,105   16,215   17,462 
Total time
  64,756   66,660   112,141 
Total
 $88,890  $106,265  $164,362 
Other Borrowings (Tables)
Other Borrowings 
Information relating to other borrowings is summarized as follows (dollars in thousands):

                             
   
2011
  
2010
  
2009
 
         
Maximum
        
Maximum
        
Maximum
 
         
Outstanding
        
Outstanding
        
Outstanding
 
         
At Any
        
At Any
        
At Any
 
   
Balance
  
Rate
  
Month End
  
Balance
  
Rate
  
Month End
  
Balance
  
Rate
  
Month End
 
                             
Parent Company and Other Non-Bank Subsidiaries:
                           
Revolving, unsecured line
 $–   –% $–  $–   –% $–  $–   –% $50,000 
Trust preferred debt
  –   –   8,763   7,217   6.42   7,217   7,217   6.42   12,372 
Total Parent Company and Other Non-Bank Subsidiaries
  –           7,217           7,217         
                                      
Subsidiary Bank:
                                    
Funds purchased
  1,063,318   0.07   1,706,893   1,025,018   0.11   1,465,983   1,315,133   0.14   2,002,285 
Repurchase agreements
  1,233,064   0.12   1,393,237   1,258,762   0.59   1,258,762   1,156,610   0.46   1,156,610 
Federal Home Loan Bank advances
  4,837   0.38   201,674   801,797   0.14   2,277,977   1,253,051   0.23   2,053,130 
Federal Reserve advances
  –   –   –   –   –   400,000   850,000   0.25   1,100,000 
Subordinated debentures
  398,881   5.74   398,881   398,701   5.78   398,701   398,539   5.53   398,539 
GNMA repurchase liability
  53,082   5.79   118,595   –   –   –   –   –   – 
Other
  16,566   3.23   45,366   24,564   0.46   25,326   23,089   0.22   31,577 
Total subsidiary banks
  2,769,748   1.06       3,508,842   0.95       4,996,422   0.70     
                                      
Total other borrowings
 $2,769,748   1.07%     $3,516,059   0.98%     $5,003,639   0.72%    
Aggregate Annual Principal Repayments 
Aggregate annual principal repayments at December 31, 2011 are as follows (in thousands):

   
Parent
  
Subsidiary
 
   
Company
  
Bank
 
        
2012
 $–  $2,353,579 
2013
  –   1,722 
2014
  –   525 
2015
  –   525 
2016
  –   149,666 
Thereafter
  –   263,731 
Total
 $–  $2,769,748 
Schedule of Repurchase Agreements 
Additional information relating to securities sold under agreements to repurchase and related liabilities at December 31, 2011 and 2010 is as follows (dollars in thousands):
 
   
December 31, 2011
 
   
Amortized
  
Market
  
Repurchase
  
Average
 
Security Sold/Maturity
 
Cost
  
Value
  
Liability1
  
Rate
 
 
U.S. Agency Securities:
            
Overnight1
 $1,583,958  $1,628,547  $1,231,426   0.09%
Long-term
  –   –   –   – 
Total Agency Securities
 $1,583,958  $1,628,547  $1,231,426   0.09%
     
   
December 31, 2010
 
   
Amortized
  
Market
  
Repurchase
  
Average
 
Security Sold/Maturity
 
Cost
  
Value
  
Liability1
  
Rate
 
 
U.S. Agency Securities:
                
Overnight1
 $1,357,440  $1,399,570  $1,108,769   0.25%
Long-term
  132,130   139,344   170,155   4.72 
Total Agency Securities
 $1,489,570  $1,538,914  $1,278,924   0.85%
1
BOK Financial maintains control over the securities underlying overnight repurchase agreements and generally transfers control over securities underlying longer-term dealer repurchase agreements to the respective counterparty.
Federal and State Income Taxes (Tables)
Deferred Tax Assets and Liabilities 
Significant components of deferred tax assets and liabilities are as follows (in thousands):

   
December 31,
 
   
2011
  
2010
 
Deferred tax liabilities:
      
Available for sale securities mark-to-market
 $86,400  $77,700 
Depreciation
  29,400   17,400 
Mortgage servicing rights
  48,900   43,800 
Lease financing
  13,200   14,700 
Other
  18,400   13,600 
Total deferred tax liabilities
  196,300   167,200 
Deferred tax assets:
        
Stock-based compensation
  10,100   8,300 
Credit loss allowances
  102,700   116,900 
Valuation adjustments
  42,300   36,400 
Deferred book income
  9,200   12,700 
Deferred compensation
  29,500   22,300 
Book expense in excess of pension    contribution
  1,900   1,000 
Other
  38,500   27,700 
Total deferred tax assets
  234,200   225,300 
Deferred tax assets in excess of deferred tax liabilities
 $37,900  $58,100 

Components of Income Tax Expense 
The significant components of the provision for income taxes attributable to continuing operations for BOK Financial are shown below (in thousands):

 
   
Year ended December 31,
 
   
2011
  
2010
  
2009
 
Current tax expense:
         
Federal
 $137,802  $132,165  $112,163 
State
  16,085   17,618   16,759 
Total current tax expense
  153,887   149,783   128,922 
Deferred tax (benefit):
            
Federal
  3,882   (24,714)  (19,835)
State
  742   (1,712)  (2,382)
Total deferred tax (benefit)
  4,624   (26,426)  (22,217)
Total income tax expense
 $158,511  $123,357  $106,705 
Effective Income Tax Reconciliation 

The reconciliations of income attributable to continuing operations computed at the U.S. federal statutory tax rates to income tax expense are as follows (in thousands):

   
Year ended December 31,
 
   
2011
  
2010
  
2009
 
Amount:
         
Federal statutory tax
 $156,917  $130,078  $108,752 
Tax exempt revenue
  (5,357)  (5,404)  (4,616)
Effect of state income taxes, net of federal benefit
  11,198   9,740   9,165 
Non-controlling interest
  (1,382)  (539)  (1,204)
Utilization of tax credits
  (2,972)  (6,317)  (1,327)
Bank-owned life insurance
  (3,879)  (4,133)  (3,424)
Reduction of tax accrual
  (1,764)  (2,245)  – 
Other, net
  5,750   2,177   (641)
Total
 $158,511  $123,357  $106,705 

Due to the favorable resolution of certain tax issues for the tax periods ended December 31, 2007and December 31, 2006, BOK Financial reduced its tax accrual by $1.8 million and $2.2 million in 2011 and 2010, respectively, which was credited against current income tax expense.



   
Year ended December 31,
 
   
2011
  
2010
  
2009
 
Percent of pretax income:
         
Federal statutory rate
  35%  35%  35%
Tax-exempt revenue
  (1)  (1)  (2)
Effect of state income taxes,  net of federal benefit
  2   3   3 
Non-controlling interest
  –   –   (1)
Utilization of tax credits
  (1)  (2)  – 
Bank-owned life insurance
  (1)  (1)  (1)
Reduction of tax accrual
  –   (1)  – 
Other
  1   –   – 
Total
  35%  33%  34%
Unrecognized Tax Benefits 
A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):

   
2011
  
2010
  
2009
 
Balance as of January 1
 $11,900  $12,300  $13,200 
Additions for tax for current year positions
  6,390   3,700   4,050 
Settlements during the period
  (2,510)  –   – 
Decreases in tax for prior year positions
  –   –   (700)
Lapses of applicable statute of limitations
  (3,550)  (4,100)  (4,250)
Balance as of December 31
 $12,230  $11,900  $12,300 
Employee Benefits (Tables)
Change in benefit obligation, plan assets funded status and net periodic pension cost (benefit) 
The following table presents information regarding this plan (dollars in thousands):

   
December 31,
 
   
2011
  
2010
 
Change in projected benefit obligation:
      
Projected benefit obligation at beginning of year
 $48,373  $46,581 
Interest cost
  2,157   2,257 
Actuarial loss
  2,461   1,489 
Benefits paid
  (2,778)  (1,954)
Projected benefit obligation at end of year1,2
 $50,213  $48,373 
          
Change in plan assets:
        
Plan assets at fair value at beginning of year
 $44,477  $41,689 
Actual return on plan assets
  2,160   4,742 
Benefits paid
  (2,778)  (1,954)
Plan assets at fair value at end of year
 $43,859  $44,477 
          
Funded status of the plan
 $(6,354) $(3,896)
          
Components of net periodic benefit costs:
        
Interest cost
 $2,157  $2,257 
Expected return on plan assets
  (1,957)  (2,126)
Amortization of unrecognized net loss
  3,659   2,912 
Net periodic pension cost
 $3,859  $3,043 
1
Projected benefit obligation equals accumulated benefit obligation.
2
Projected benefit obligation is based on a January 1 measurement date.

 
Valuation assumptions used 
Weighted-average assumptions as of December 31:
 
2011
  
2010
 
Discount rate
  4.11%  4.75%
Expected return on plan assets
  5.25%  5.25%
Rate of compensation increase
  N/A   N/A 
Expected future benefit payments 
As of December 31, 2011, expected future benefit payments related to the Pension Plan were as follows (in thousands):
 
2012
 $6,337 
2013
  3,735 
2014
  3,749 
2015
  3,813 
2016
  3,817 
2017 through 2019
  16,887 
   $38,338 
Stock Compensation Plans (Tables)
Share-based Compensation Stock Options Activity 
The following table presents stock options outstanding during 2011, 2010 and 2009 under these plans (in thousands, except for per share data):

      
Weighted-
    
      
Average
  
Aggregate
 
      
Exercise
  
Intrinsic
 
   
Number
  
Price
  
Value
 
Options outstanding at December 31, 2008
  3,575,468  $45.77  $19,200 
Options awarded
  913,880   37.24     
Options exercised
  (280,572)  33.49     
Options forfeited
  (487,793)  44.83     
Options expired
  (199,220)  51.76     
Options outstanding at December 31, 2009
  3,521,763  $44.58  $10,359 
Options awarded
  345,945   48.30     
Options exercised
  (486,280)  39.29     
Options forfeited
  (97,443)  46.89     
Options expired
  (148,651)  51.35     
Options outstanding at December 31, 2010
  3,135,334  $45.62  $24,405 
Options awarded
  185,007   55.94     
Options exercised
  (576,518)  44.35     
Options forfeited
  (60,005)  47.93     
Options expired
  (62,471)  54.13     
Options outstanding at December 31, 2011
  2,621,347  $47.01  $20,769 
              
Options vested at:
            
December 31, 2009
  903,380  $43.37  $3,745 
December 31, 2010
  805,781  $45.26  $6,556 
December 31, 2011
  825,682  $46.72  $6,779 
Outstanding and Vested Stock Options 
The following table summarizes information concerning currently outstanding and vested stock options:

Options Outstanding
  
Options Vested
 
      
Weighted
          
      
Average
  
Weighted
     
Weighted
 
Range of
     
Remaining
  
Average
     
Average
 
Exercise
  
Number
  
Contractual
  
Exercise
  
Number
  
Exercise
 
Prices
  
Outstanding
  
Life (years)
  
Price
  
Vested
  
Price
 
                 
$30.50 – 30.87   30,044   0.95  $30.79   30,044  $30.79 
 36.65   536,106   4.00   36.65   65,348   36.65 
 37.74   81,535   1.50   37.74   81,535   37.74 
 45.15 – 47.34   217,277   2.00   47.31   139,202   47.30 
 47.05 – 48.53   274,770   2.50   47.05   125,948   47.05 
 47.67   27,484   0.12   47.67   27,484   47.67 
 48.30   220,072   5.00   48.30   8,942   48.30 
 48.46   523,725   3.50   48.46   159,411   48.46 
 54.33   429,016   3.00   54.33   187,768   54.33 
 55.94   281,318   6.00   55.94   –   – 
Assumptions used in the determination of fair value of stock options awarded 
The fair value of options was determined as of the date of grant using a Black-Scholes option pricing model with the following weighted average assumptions:

   
2011
  
2010
  
2009
 
           
Average risk-free interest rate1
  1.87%  2.36%  1.32%
Dividend yield
  1.80%  2.00%  2.50%
Volatility factors
  0.268   0.261   0.218 
Weighted average expected life
 
4.9 years
  
4.9 years
  
4.9 years
 
Weighted average fair value
 $11.92  $10.17  $5.36 
1
Average risk-free interest rate represents U.S. Treasury rates matched to the expected life of the options.

Related Parties (Tables)
Schedule of loans to related parties
Activity in loans to related parties is summarized as follows (in thousands):

 
   
2011
  
2010
 
Beginning balance
 $168,935  $217,698 
Advances
  300,080   510,663 
Payments
  (285,909)  (544,977)
Adjustments1
  (83,766)  (14,449)
Ending balance
 $99,340  $168,935 
1
Adjustments generally consist of changes in status as a related party.

Commitments and Contingent Liabilities (Tables)
Consolidated and Unconsolidated Variable Interest Entities
A summary of consolidated and unconsolidated alternative investments as of December 31, 2011 and 2010 follows (in thousands):
 
   
December 31, 2011
 
   
Loans
  
Other
assets
  
Other
liabilities
  
Other
borrowings
  
Non-controlling
interest
 
Consolidated:
               
Private equity funds
 $–  $30,902  $–  $–  $26,042 
Tax credit entities
  10,000   14,483   –   10,964   10,000 
Other
  –   7,206   –   –   142 
Total consolidated
 $10,000  $52,591  $–  $10,964  $36,184 
                      
Unconsolidated:
                    
Tax credit entities
 $–  $37,890  $16,084  $–  $– 
Other
  –   10,950   2,194   –   – 
Total unconsolidated
 $–  $48,840  $18,278  $–  $– 

 
   
December 31, 2010
 
   
Loans
  
Other
assets
  
Other
liabilities
  
Other
borrowings
  
Non-controlling
interest
 
Consolidated:
               
Private equity funds
 $–  $25,436  $–  $–  $21,957 
Tax credit entities
  –   –   –   –   – 
Other
  –   7,516   –   –   195 
Total consolidated
 $–  $32,952  $–  $–  $22,152 
                      
Unconsolidated:
                    
Tax credit entities
 $–  $28,580  $15,668  $–  $– 
Other
  –   9,880   2,974   –   – 
Total unconsolidated
 $–  $38,460  $18,642  $–  $– 

Shareholders' Equity (Tables)
Regulatory Capital Requirements 
A summary of regulatory capital levels as of December 31, 2011 follows (dollars in thousands):

Total Capital (to Risk Weighted Assets):
      
Consolidated
 $2,851,099   16.49%
BOKF, NA
  2,329,670   13.53 
Tier I Capital (to Risk Weighted Assets):
        
Consolidated
 $2,295,061   13.27%
BOKF, NA
  1,775,182   10.31 
Tier I Capital (to Average Assets):
        
Consolidated
 $2,295,061   9.15%
BOKF, NA
  1,775,182   7.11 
 
A summary of regulatory capital levels of the former subsidiary banks as of December 31, 2010 follows (dollars in thousands):

Total Capital (to Risk Weighted Assets):
      
Consolidated
 $2,651,771   16.20%
Bank of Oklahoma
  1,528,078   13.47 
Bank of Texas
  479,682   12.26 
Bank of Albuquerque
  143,225   18.45 
Bank of Arkansas
  38,065   18.18 
Colorado State Bank and Trust
  97,592   13.76 
Bank of Arizona
  31,298   12.05 
Bank of Kansas City
  20,408   19.45 
Tier I Capital (to Risk Weighted Assets):
        
Consolidated
 $2,076,525   12.69%
Bank of Oklahoma
  1,017,458   8.97 
Bank of Texas
  430,534   11.00 
Bank of Albuquerque
  133,487   17.20 
Bank of Arkansas
  35,423   16.92 
Colorado State Bank and Trust
  88,723   12.51 
Bank of Arizona
  27,977   10.77 
Bank of Kansas City
  19,247   18.34 
Tier I Capital (to Average Assets):
        
Consolidated
 $2,076,525   8.74%
Bank of Oklahoma
  1,017,458   5.80 
Bank of Texas
  430,534   8.06 
Bank of Albuquerque
  133,487   7.19 
Bank of Arkansas
  35,423   11.91 
Colorado State Bank and Trust
  88,723   6.85 
Bank of Arizona
  27,977   10.16 
Bank of Kansas City
  19,247   6.21 

 
Accumulated Other Comprehensive Income (Loss) 
 Gains and losses in AOCI are net of deferred income taxes.

   
Unrealized Gain (Loss) on
       
      
Investment
     
Loss on
    
   
Available for
  
Securities
     
Effective
    
   
Sale
  
Transferred
  
Employee
  
Cash Flow
    
   
Securities
  
from AFS
  
Benefit Plans
  
Hedges
  
Total
 
Balance at December 31, 2008
 $(204,648) $–  $(17,039) $(1,199) $(222,886)
Net change in unrealized gain (loss)
  369,104   –   926   –   370,030 
Other-than-temporary impairment losses recognized in earnings
  34,413   –   –   –   34,413 
Reclassification adjustment for net (gains) losses realized and included in earnings
  (59,320)  –   –   262   (59,058)
Income tax expense (benefit)
  (132,777)  –   (360)  (102)  (133,239)
Balance at December 31, 2009
  6,772   –   (16,473)  (1,039)  (10,740)
Net change in unrealized gain (loss)
  181,051   –   4,412   –   185,463 
Other-than-temporary impairment losses recognized in earnings
  27,809   –   –   –   27,809 
Reclassification adjustment for net (gains) losses realized and included in earnings
  (21,882)  –   –   264   (21,618)
Income tax expense (benefit)
  (71,256)  –   (1,716)  (103)  (73,075)
Balance at December 31, 2010
  122,494   –   (13,777)  (878)  107,839 
Net change in unrealized gain (loss)
  45,593   –   1,694   –   47,287 
Other-than-temporary impairment losses recognized in earnings
  23,507   –   –   –   23,507 
Transfer of net unrealized gain from AFS to Investment securities
  (12,999)  12,999   –   –   – 
Amortization of unrealized gain on investment securities transferred from AFS
  –   (1,357)  –   –   (1,357)
Reclassification adjustment for net (gains) losses realized and included in earnings
  (34,144)  –   –   304   (33,840)
Income tax benefit (expense)
  (8,711)  (4,969)  (659)  (118)  (14,457)
Balance at December 31, 2011
 $135,740  $6,673  $(12,742) $(692) $128,979 

Earnings Per Share (Tables)
Earnings Per Share
The following table presents the computation of basis and diluted earnings per share (dollar in thousands, except per share data):
 
   
Year ended December 31,
 
   
2011
  
2010
  
2009
 
Numerator:
         
Net income
 $285,875  $246,754  $200,578 
Earnings allocated to participating securities
  (2,214)  (1,583)  (818)
Numerator for basic earnings per share – income available to common shareholders
  283,661   245,171   199,760 
Effect of reallocating undistributed earnings of participating securities
  6   3   1 
Numerator for diluted earnings per share – income available to common shareholders
 $283,667  $245,174  $199,761 
Denominator:
            
Weighted average shares outstanding
  68,313,898   68,062,047   67,653,035 
Less:  Participating securities included in weighted average shares outstanding
  (526,222)  (434,312)  (277,648)
Denominator for basic earnings per common share
  67,787,676   67,627,735   67,375,387 
Dilutive effect of employee stock compensation plans 1
  251,087   203,999   112,557 
Denominator for diluted earnings per common share
  68,038,763   67,831,734   67,487,944 
Basic earnings per share
 $4.18  $3.63  $2.96 
Diluted earnings per share
 $4.17  $3.61  $2.96 
1Excludes employee stock options with exercise prices greater than current market price.
  769,041   1,245,483    2,735,375 



Reportable Segments (Tables)
Reportable Segments
Reportable segments reconciliation to the Consolidated Financial Statements for the year ended December 31, 2011 is as follows (in thousands):

   
Commercial
  
Consumer
  
Wealth
Management
  
Funds Management and Other
  
BOK
Financial
Consolidated
 
Net interest revenue from external sources
 $346,861  $89,745  $26,785  $228,103  $691,494 
Net interest revenue (expense) from internal sources
  (29,919)  33,109   15,783   (18,973)  – 
Net interest revenue
  316,942   122,854   42,568   209,130   691,494 
Provision for (reduction of) allowances for credit losses
  21,007   13,451   2,860   (43,368)  (6,050)
Net interest revenue after provision for (reduction of) allowances for credit losses
  295,935   109,403   39,708   252,498   697,544 
Other operating revenue
  150,012   224,875   171,490   25,887   572,264 
Other operating expense
  234,342   279,444   188,200   119,487   821,473 
Income before taxes
  211,605   54,834   22,998   158,898   448,335 
Federal and state income tax
  82,314   21,330   8,946   45,921   158,511 
Net income
  129,291   33,504   14,052   112,977   289,824 
Net income attributable to non-controlling interest
  –   –   –   3,949   3,949 
Net income attributable to BOK Financial Corp.
 $129,291  $33,504  $14,052  $109,028  $285,875 
                      
Average assets
 $9,627,257  $5,937,585  $3,829,894  $5,100,125  $24,494,861 
Average invested capital
  884,326   273,809   174,927   1,348,803   2,681,865 
                      
Performance measurements:
                    
Return on average assets
  1.34%  0.56%  0.37%      1.17%
Return on average invested capital
  14.62%  12.24%  8.03%      10.66%
Efficiency ratio
  50.27%  74.66%  88.15%      63.27%

 
Reportable segments reconciliation to the Consolidated Financial Statements for the year ended December 31, 2010 is as follows (in thousands):
 
   
Commercial
  
Consumer
  
Wealth
Management
  
Funds Management and Other
  
BOK
Financial
Consolidated
 
Net interest revenue from external sources
 $343,241  $86,291  $31,161  $248,359  $709,052 
Net interest revenue (expense) from internal sources
  (45,144)  47,624   12,373   (14,853)  – 
Net interest revenue
  298,097   133,915   43,534   233,506   709,052 
Provision for credit losses
  70,752   24,705   10,569   (887)  105,139 
Net interest revenue after provision for credit losses
  227,345   109,210   32,965   234,393   603,913 
Other operating revenue
  140,317   215,506   165,204   (119)  520,908 
Other operating expense
  233,455   242,511   177,609   99,595   753,170 
Income before taxes
  134,207   82,205   20,560   134,679   371,651 
Federal and state income tax
  52,207   31,978   7,998   31,174   123,357 
Net income
  82,000   50,227   12,562   103,505   248,294 
Net income attributable to non-controlling interest
  –   –   –   1,540   1,540 
Net income attributable to BOK Financial Corp.
 $82,000  $50,227  $12,562  $101,965  $246,754 
                      
Average assets
 $9,007,403  $6,243,519  $3,499,115  $4,768,821  $23,518,858 
Average invested capital
  899,005   277,837   169,775   1,078,026   2,424,643 
                      
Performance measurements:
                    
Return on average assets
  0.91%  0.80%  0.36%      1.05%
Return on average invested capital
  9.12%  18.08%  7.40%      10.18%
Efficiency ratio
  53.05%  72.82%  85.39%      60.83%
 

Reportable segments reconciliation to the Consolidated Financial Statements for the year ended December 31, 2009 is as follows (in thousands):
 
   
Commercial
  
Consumer
  
Wealth
Management
  
Funds Management and Other
  
BOK
Financial
Consolidated
 
Net interest revenue from external sources
 $346,608  $57,647  $24,665  $281,444  $710,364 
Net interest revenue (expense) from internal sources
  (50,989)  73,796   19,165   (41,972)  – 
Net interest revenue
  295,619   131,443   43,830   239,472   710,364 
Provision for credit losses
  101,120   21,062   11,028   62,690   195,900 
Net interest revenue after provision for credit losses
  194,499   110,381   32,802   176,782   514,464 
Other operating revenue
  133,390   169,622   156,329   33,649   492,990 
Other operating expense
  230,224   242,981   171,158   52,370   696,733 
Income before taxes
  97,665   37,022   17,973   158,061   310,721 
Federal and state income tax
  37,992   14,402   6,991   47,320   106,705 
Net income
  59,673   22,620   10,982   110,741   204,016 
Net income attributable to non-controlling interest
  –   –   –   3,438   3,438 
Net income attributable to BOK Financial Corp.
 $59,673  $22,620  $10,982  $107,303  $200,578 
                      
Average assets
 $10,102,655  $6,148,067  $3,027,312  $3,618,007  $22,896,040 
Average invested capital
  950,684   253,233   160,276   712,848   2,077,041 
                      
Performance measurements:
                    
Return on average assets
  0.59%  0.37%  0.36%      0.88%
Return on average invested capital
  6.28%  8.93%  6.85%      9.66%
Efficiency ratio
  53.66%  81.26%  85.83%      59.07%
Fair Value Measurements (Tables)
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 December 31, 2011 (dollars in thousands):
 
      
Range of
  
Average
     
Estimated
 
   
Carrying
  
Contractual
  
Re-pricing
  
Discount
  
Fair
 
   
Value
  
Yields
  
(in years)
  
Rate
  
Value
 
Cash and cash equivalents
 $986,365           $986,365 
Trading securities
  76,800            76,800 
                   
Investment securities:
                 
Municipal and other tax-exempt
  128,697            133,670 
U.S. agency residential mortgage-backed securities
  121,704            120,536 
Other debt securities
  188,835            208,451 
Total investment securities
  439,236            462,657 
                   
Available for sale securities:
                 
U.S. Treasury
  1,006            1,006 
Municipal and other tax-exempt
  68,837            68,837 
U.S. agency residential mortgage-backed securities
  9,588,177            9,588,177 
Privately issued residential mortgage-backed securities
  419,166            419,166 
Other debt securities
  36,495            36,495 
Perpetual preferred stock
  18,446            18,446 
Equity securities and mutual funds
  47,238            47,238 
Total available for sale securities
  10,179,365            10,179,365 
                   
Fair value option securities
  651,226            651,226 
Residential mortgage loans held for sale
  188,125   –   –   –   188,125 
                      
Loans:
                    
Commercial
  6,571,454   0.25 –30.00%  0.57   0.63 – 3.85%  6,517,795 
Commercial real estate
  2,279,909   0.38 –18.00   1.26   0.28 – 3.51   2,267,375 
Residential mortgage
  1,970,461   0.38 –18.00   3.26   1.14 – 3.70   2,034,898 
Consumer
  447,919   0.38 –21.00   0.42   1.88 – 3.88   436,490 
Total loans
  11,269,743               11,256,558 
Allowance for loan losses
  (253,481)              – 
Net loans
  11,016,262               11,256,558 
                      
Mortgage servicing rights
  86,783               86,783 
Derivative instruments with positive fair value, net of cash margin
  293,859               293,859 
Other assets – private equity funds
  30,902               30,902 
Deposits with no stated maturity
  15,380,598               15,380,598 
Time deposits
  3,381,982   0.01 –9.64   2.07   1.02 – 1.43   3,441,610 
Other borrowings
  2,370,867   0.25 –6.58   0.00   0.04 – 2.76   2,369,224 
Subordinated debentures
  398,881   5.19 –5.82   1.44   3.29   411,243 
Derivative instruments with negative fair value, net of cash margin
  236,522               236,522 
 

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, 2010 (dollars in thousands):

      
Range of
  
Average
     
Estimated
 
   
Carrying
  
Contractual
  
Re-pricing
  
Discount
  
Fair
 
   
Value
  
Yields
  
(in years)
  
Rate
  
Value
 
Cash and cash equivalents
 $1,269,404           $1,269,404 
Trading securities
  55,467            55,467 
                   
Investment securities:
                 
Municipal and other tax-exempt
  184,898            188,577 
Other debt securities
  154,655            157,528 
Total investment securities
  339,553            346,105 
                   
Available for sale securities:
                 
Municipal and other tax-exempt
  72,942            72,942 
U.S. agency residential mortgage-backed securities
  8,446,908            8,446,908 
Privately issued residential mortgage-backed securities
  644,210            644,210 
Other debt securities
  6,401            6,401 
Perpetual preferred stock
  22,114            22,114 
Equity securities and mutual funds
  43,046            43,046 
Total available for sale securities
  9,235,621            9,235,621 
                   
Mortgage trading securities
  428,021            428,021 
Residential mortgage loans held for sale
  263,413   –   –   –   263,413 
                      
Loans:
                    
Commercial
  5,933,996   0.25 –18.00%  0.57   0.72 – 4.67%  5,849,443 
Commercial real estate
  2,277,350   0.38 –18.00   1.17   0.29 – 3.81   2,221,443 
Residential mortgage
  1,828,248   0.38 –18.00   3.65   0.79 – 4.58   1,860,913 
Consumer
  603,442   0.38 –21.00   0.67   1.98 – 3.91   605,656 
Total loans
  10,643,036               10,537,455 
Allowance for loan losses
  (292,971)              – 
Net loans
  10,350,065               10,537,455 
                      
Mortgage servicing rights
  115,723               115,723 
Derivative instruments with positive fair value, net of cash margin
  270,445               270,445 
Other assets – private equity funds
  25,436               25,436 
Deposits with no stated maturity
  13,669,893               13,669,893 
Time deposits
  3,509,168   0.01 –9.64   1.85   0.82 – 1.56   2,979,505 
Other borrowings
  3,117,358   0.13 –6.58   0.02   0.13 – 2.73   2,982,460 
Subordinated debentures
  398,701   5.19 –5.82   2.30   3.72   413,328 
Derivative instruments with negative fair value, net of cash margin
  215,420               215,420 

Fair Value Assets And Liabilities Measured On A Recurring Basis 
The fair value of financial assets and liabilities that are measured on a recurring basis are as follows as of December 31, 2011 (in thousands):
 
   
Total
  
Quoted Prices in Active Markets for Identical Instruments
  
Significant Other Observable Inputs
  
Significant Unobservable Inputs
 
Assets:
            
Trading securities
 $76,800  $–  $76,623  $177 
                  
Available for sale securities:
                
U.S. Treasury
  1,006   1,006   –   – 
Municipal and other tax-exempt
  68,837   –   26,484   42,353 
U.S. agency residential mortgage-backed securities
  9,588,177   –   9,588,177   – 
Privately issued residential mortgage-backed securities
  419,166   –   419,166   – 
Other debt securities
  36,495   –   30,595   5,900 
Perpetual preferred stock
  18,446   –   18,446   – 
Equity securities and mutual funds
  47,238   23,596   23,642   – 
Total available for sale securities
  10,179,365   24,602   10,106,510   48,253 
                  
Fair value option securities
  651,226   –   651,226   – 
Residential mortgage loans held for sale
  188,125   –   188,125   – 
Mortgage servicing rights
  86,783   –   –   86,7831
Derivative contracts, net of cash margin2
  293,859   457   293,402   – 
Other assets – private equity funds
  30,902   –   –   30,902 
                  
Liabilities:
                
Derivative contracts, net of cash margin2
  236,522   –   236,522   – 
                  
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 7, Mortgage Banking Activities.
2
See Note 3 for detail of fair value of derivative contracts by contract type.
 

The fair value of financial assets and liabilities that are measured on a recurring basis are as follows as of December 31, 2010 (in thousands):
   
Total
  
Quoted Prices in Active Markets for Identical Instruments
  
Significant Other Observable Inputs
  
Significant Unobservable Inputs
 
Assets:
            
Trading securities
 $55,467  $877  $54,590  $– 
                  
Available for sale securities:
                
Municipal and other tax-exempt
  72,942   –   25,849   47,093 
U.S. agency residential mortgage-backed securities
  8,446,908   –   8,446,908   – 
Privately issued residential mortgage-backed securities
  644,210   –   644,210   – 
Other debt securities
  6,401   –   1   6,400 
Perpetual preferred stock
  22,114   –   22,114   – 
Equity securities and mutual funds
  43,046   22,344   20,702   – 
Total available for sale securities
  9,235,621   22,344   9,159,784   53,493 
                  
Fair value option securities
  428,021   –   428,021   – 
Residential mortgage loans held for sale
  263,413   –   263,413   – 
Mortgage servicing rights
  115,723   –   –   115,7231
Derivative contracts, net of cash margin2
  270,445   –   270,445   – 
Other assets – private equity funds
  25,436   –   –   25,436 
                  
Liabilities:
                
Certificates of deposit – fair value election
  27,414   –   27,414   – 
Derivative contracts, net of cash margin2
  215,420   –   215,420   – 
                  
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 7, Mortgage Banking Activities.
2
See Note 3 for detail of fair value of derivative contracts by contract type.

Fair Value Assets Measured On Recurring Basis Significant Unobservable Inputs 
The following represents the changes for the year ended December 31, 2011 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 at December 31, 2010
 $47,093  $6,400  $25,436 
Purchases and capital calls
  7,520   –   4,052 
Redemptions and distributions
  (10,625)  (500)  (3,903)
Gain (loss) recognized in earnings
            
Brokerage and trading revenue
  (576)  –   – 
Gain on other assets, net
  –   –   5,317 
Gain on securities, net
  21   –   – 
Other-than-temporary impairment losses
  (1,558)  –   – 
Other comprehensive income
  478   –   – 
Balance December 31, 2011
 $42,353  $5,900  $30,902 

The following represents the changes for the year ended December 31, 2010 related to assets measured at fair value on a recurring basis using significant unobservable inputs (in thousands):

      
Available for Sale Securities
    
   
Trading Securities
  
Municipal and other tax-exempt
  
Other debt securities
  
Other assets – private equity funds
 
              
Balance at December 31, 2009
 $9,800  $36,598  $17,116  $22,917 
Transfer from trading to available for sale
  (13,090)  12,990   100   – 
Purchases, sales, issuances and settlements, net
  3,555   (1,468)  (11,081)  2,479 
Gain (loss) recognized in earnings
                
Brokerage and trading revenue
  (265)  –   –   – 
Gain on other assets, net
  –   –   –   40 
Gain on securities, net
  –   7   259   – 
Other-than-temporary impairment losses
  –   (1,019)  –   – 
Other comprehensive income (loss)
  –   (15)  6   – 
Balance December 31, 2010
 $–  $47,093  $6,400  $25,436 
Fair Value Assets Measured on Nonrecurring Basis 
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 adjusted to fair value during the year ended December 31, 2011 (in thousands):

   
Carrying Value at December 31, 2011
  
Fair Value Adjustments for the Year Ended December 31, 2011 Recognized In:
 
   
Quoted Prices
in Active Markets for Identical Instruments
  
Significant
Other
Observable
Inputs
  
Significant
Unobservable
Inputs
  
Gross charge-offs against allowance for loan loss
  
Gross charge-offs against allowance for recourse loans
  
Net losses and expenses of repossessed assets, net
 
Impaired loans
 $–  $52,421  $1,447  $13,829  $1,368  $– 
Real estate and other repossessed assets
  –   57,160   13,100   –   –   14,077 

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 adjusted to fair value during the year ended December 31, 2010 (in thousands):

   
Carrying Value at December 31, 2010
  
Fair Value Adjustments for the Year Ended
December 31, 2010 Recognized In:
 
   
Quoted Prices
in Active Markets for Identical Instruments
  
Significant
Other
Observable
Inputs
  
Significant
Unobservable
Inputs
  
Gross charge-offs against allowance for loan loss
  
Gross charge-offs against allowance for recourse loans
  
Net losses and expenses of repossessed assets, net
  
Other
expense
 
Impaired loans
 $–  $77,665  $–  $51,058  $265  $–  $– 
Real estate and other repossessed assets
  –   72,113   1,607   –   –   25,020   – 
Other assets – alternative investments
  –   –   3,910   –   –   –   1,750 

Discounted Future Value Assumptions for Business Unit Evaluation 
Critical assumptions in our evaluation were:

   
2011
  
2010
 
Average expected long-term growth rate
  10.00%  11.00%
Volatility factor for BOKF common stock
  0.90%  0.75%
Discount rate
  13.03%  11.73%
Market risk premium
  12.34%  12.26%
 
Significant Accounting Policies (Details)
12 Months Ended
Dec. 31, 2010
Property, Plant and Equipment [Line Items]
 
Maturity period of resell agreements, minimum (in days)
1 
Maturity period of resell agreements, maximum (in days)
30 
Effective fair value hedge interest rate swap range, minimum (in hundredths)
80.00% 
Effective fair value hedge interest rate swap range, maximum (in hundredths)
120.00% 
Number of periods of aggregate accumulation of net losses used as a basis for migration factors (in quarters)
8 
General allowance for residential mortgage loans basis (in quarters)
8 
General allowance for consumer loans basis (in quarters)
8 
Unsecured or under-secured loans past due considered uncollectible (in days)
180 
Period uncollectible loans left on books, maximum (in days)
30 
Amortization period for unrecognized prior service cost net gains and losses, minimum
average remaining service periods of the participants 
Amortization period for unrecognized prior service cost net gains and losses, maximum (in years)
10 
Stock options generally vested (in years)
7 
Non-vested shares cliff vest (in years)
5 
Buildings and Improvements [Member]
 
Property, Plant and Equipment [Line Items]
 
Useful lives range premises and equipment, minimum (in years)
5 
Useful lives range premises and equipment, maximum (in years)
40 
Software [Member]
 
Property, Plant and Equipment [Line Items]
 
Useful lives range premises and equipment, minimum (in years)
3 
Useful lives range premises and equipment, maximum (in years)
7 
Furniture and equipment [Member]
 
Property, Plant and Equipment [Line Items]
 
Useful lives range premises and equipment, minimum (in years)
3 
Useful lives range premises and equipment, maximum (in years)
10 
Core Deposits Premiums [Member]
 
Finite-Lived Intangible Assets [Line Items]
 
Core deposit intangible assets amortization period (in years)
5 
Other Identifiable Intangible Assets [Member]
 
Finite-Lived Intangible Assets [Line Items]
 
Other intangible assets amortization period, minimum (in years)
5 
Other intangible assets amortization period, maximum (in years)
20 
Securities Part 1 (Details) (USD $)
Dec. 31, 2011
Dec. 31, 2010
Trading Securities [Abstract]
 
 
Fair Value, trading securities
$ 76,800,000 
$ 55,467,000 
Held-to-Maturity [Abstract]
 
 
Carrying Value
439,236,000 1
 
Amortized Cost
427,594,000 
339,553,000 
Investments securities, fair value
462,657,000 
346,105,000 
Not Recognized in OCI Gross Unrealized Gain
25,193,000 2
8,417,000 2
Not Recognized in OCI Gross Unrealized Loss
(1,772,000)2
(1,865,000)2
Net Unrealized Gain (Loss) on Securities transferred from Available for Sale securities portfolio to the Investment securities portfolio
13,000,000 
 
Fair Value of Securities transferred from Available for Sale securities portfolio to the Investment securities portfolio
131,000,000 
 
Amortized cost of Securities transferred from Available for Sale securities portfolio to the Investment securities portfolio
118,000,000 
 
Municipal And Other Tax Exempt Securities [Member]
 
 
Held-to-Maturity [Abstract]
 
 
Carrying Value
128,697,000 1
 
Amortized Cost
128,697,000 
184,898,000 
Investments securities, fair value
133,670,000 
188,577,000 
Not Recognized in OCI Gross Unrealized Gain
4,975,000 2
3,912,000 2
Not Recognized in OCI Gross Unrealized Loss
(2,000)2
(233,000)2
Residential Mortgage Backed Securities [Member]
 
 
Held-to-Maturity [Abstract]
 
 
Carrying Value
121,704,000 1
 
Amortized Cost
110,062,000 
0 
Investments securities, fair value
120,536,000 
0 
Not Recognized in OCI Gross Unrealized Gain
602,000 2
0 2
Not Recognized in OCI Gross Unrealized Loss
(1,770,000)2
0 2
Other Debt Obligations [Member]
 
 
Held-to-Maturity [Abstract]
 
 
Carrying Value
188,835,000 1
 
Amortized Cost
188,835,000 
154,655,000 
Investments securities, fair value
208,451,000 
157,528,000 
Not Recognized in OCI Gross Unrealized Gain
19,616,000 2
4,505,000 2
Not Recognized in OCI Gross Unrealized Loss
0 2
(1,632,000)2
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
 
 
Held-to-Maturity [Abstract]
 
 
Carrying Value
121,704,000 
 
Amortized Cost
439,236,000 
 
Trading Securities [Member]
 
 
Trading Securities [Abstract]
 
 
Fair Value, trading securities
76,800,000 
55,467,000 
Net Unrealized Gain (Loss)
783,000 
59,000 
Trading Securities [Member] |
Municipal And Other Tax Exempt Securities [Member]
 
 
Trading Securities [Abstract]
 
 
Fair Value, trading securities
39,345,000 
23,396,000 
Net Unrealized Gain (Loss)
652,000 
(214,000)
Trading Securities [Member] |
U.S. agency residential mortgage backed securities - Other [Member]
 
 
Trading Securities [Abstract]
 
 
Fair Value, trading securities
12,379,000 
27,271,000 
Net Unrealized Gain (Loss)
59,000 
292,000 
Trading Securities [Member] |
Obligations of the U. S. Government [Member]
 
 
Trading Securities [Abstract]
 
 
Fair Value, trading securities
22,203,000 
3,873,000 
Net Unrealized Gain (Loss)
63,000 
(17,000)
Trading Securities [Member] |
Other trading securities [Member]
 
 
Trading Securities [Abstract]
 
 
Fair Value, trading securities
2,873,000 
927,000 
Net Unrealized Gain (Loss)
$ 9,000 
$ (2,000)
Securities Part 2 (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Held-to-Maturity, Amortized Cost [Abstract]
 
 
Held-to-Maturity, Amortized Cost, Total
$ 427,594 
$ 339,553 
Held-to-Maturity, Fair Value [Abstract]
 
 
Held-to-Maturity, Fair Value, Total
462,657 
 
Held-to-Maturity, Nominal Yield (in hundredths) [Abstract]
 
 
Held-to-Maturity, Nominal Yield (in hundredths)
4.54% 
 
Municipal And Other Tax Exempt Securities [Member]
 
 
Held-to-Maturity, Amortized Cost [Abstract]
 
 
Held-to-Maturity, Amortized Cost, Less Than One Year
34,623 
 
Held-to-Maturity, Amortized Cost, One to Five Years
68,029 
 
Held-to-Maturity, Amortized Cost, Six to Ten Years
21,848 
 
Held-to-Maturity, Amortized Cost Over Ten Year
4,197 
 
Held-to-Maturity, Amortized Cost, Total
128,697 
184,898 
Held-to-Maturity, Amortized Cost, Weighted Average Maturity (in years)
2.98 1
 
Held-to-Maturity, Fair Value [Abstract]
 
 
Held-to-Maturity, Fair Value, Less Than One Year
34,942 
 
Held-to-Maturity, Fair Value, One to Five Years
70,682 
 
Held-to-Maturity, Fair Value, Six to Ten Years
23,570 
 
Held-to-Maturity, Fair Value, Over Ten Year
4,476 
 
Held-to-Maturity, Fair Value, Total
133,670 
 
Held-to-Maturity, Nominal Yield (in hundredths) [Abstract]
 
 
Held-to-Maturity, Less Than One Year, Nominal Yield (in hundredths)
4.59% 2
 
Held-to-Maturity, One to Five Years, Nominal Yield (in hundredths)
4.62% 2
 
Held-to-Maturity, Six to Ten Years, Nominal Yield (in hundredths)
5.50% 2
 
Held-to-Maturity, Over Ten Year, Nominal Yield (in hundredths)
6.54% 2
 
Held-to-Maturity, Nominal Yield (in hundredths)
4.83% 2
 
Effective tax rate (in hundredths)
39.00% 
 
Other Debt Obligations [Member]
 
 
Held-to-Maturity, Amortized Cost [Abstract]
 
 
Held-to-Maturity, Amortized Cost, Less Than One Year
8,651 
 
Held-to-Maturity, Amortized Cost, One to Five Years
28,713 
 
Held-to-Maturity, Amortized Cost, Six to Ten Years
34,784 
 
Held-to-Maturity, Amortized Cost Over Ten Year
116,687 
 
Held-to-Maturity, Amortized Cost, Total
188,835 
154,655 
Held-to-Maturity, Amortized Cost, Weighted Average Maturity (in years)
10.0 1
 
Held-to-Maturity, Fair Value [Abstract]
 
 
Held-to-Maturity, Fair Value, Less Than One Year
8,660 
 
Held-to-Maturity, Fair Value, One to Five Years
29,546 
 
Held-to-Maturity, Fair Value, Six to Ten Years
36,962 
 
Held-to-Maturity, Fair Value, Over Ten Year
133,283 
 
Held-to-Maturity, Fair Value, Total
208,451 
 
Held-to-Maturity, Nominal Yield (in hundredths) [Abstract]
 
 
Held-to-Maturity, Less Than One Year, Nominal Yield (in hundredths)
3.78% 
 
Held-to-Maturity, One to Five Years, Nominal Yield (in hundredths)
5.56% 
 
Held-to-Maturity, Six to Ten Years, Nominal Yield (in hundredths)
5.58% 
 
Held-to-Maturity, Over Ten Year, Nominal Yield (in hundredths)
6.20% 
 
Held-to-Maturity, Nominal Yield (in hundredths)
5.88% 
 
Fixed Maturities Securities [Member]
 
 
Held-to-Maturity, Amortized Cost [Abstract]
 
 
Held-to-Maturity, Amortized Cost, Less Than One Year
43,274 
 
Held-to-Maturity, Amortized Cost, One to Five Years
96,742 
 
Held-to-Maturity, Amortized Cost, Six to Ten Years
56,632 
 
Held-to-Maturity, Amortized Cost Over Ten Year
120,884 
 
Held-to-Maturity, Amortized Cost, Total
317,532 
 
Held-to-Maturity, Amortized Cost, Weighted Average Maturity (in years)
7.16 1
 
Held-to-Maturity, Fair Value [Abstract]
 
 
Held-to-Maturity, Fair Value, Less Than One Year
46,602 
 
Held-to-Maturity, Fair Value, One to Five Years
100,228 
 
Held-to-Maturity, Fair Value, Six to Ten Years
60,532 
 
Held-to-Maturity, Fair Value, Over Ten Year
137,759 
 
Held-to-Maturity, Fair Value, Total
342,121 
 
Held-to-Maturity, Nominal Yield (in hundredths) [Abstract]
 
 
Held-to-Maturity, Less Than One Year, Nominal Yield (in hundredths)
4.43% 
 
Held-to-Maturity, One to Five Years, Nominal Yield (in hundredths)
4.90% 
 
Held-to-Maturity, Six to Ten Years, Nominal Yield (in hundredths)
5.55% 
 
Held-to-Maturity, Over Ten Year, Nominal Yield (in hundredths)
6.21% 
 
Held-to-Maturity, Nominal Yield (in hundredths)
5.45% 
 
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
 
 
Held-to-Maturity, Amortized Cost [Abstract]
 
 
Held-to-Maturity, Amortized Cost, Total
439,236 
 
Held-to-Maturity, Fair Value [Abstract]
 
 
Held-to-Maturity, Fair Value, Total
$ 120,536 
 
Held-to-Maturity, Nominal Yield (in hundredths) [Abstract]
 
 
Held-to-Maturity, Nominal Yield (in hundredths)
2.17% 
 
Securities Part 3 (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
$ 10,179,365 
$ 9,096,277 
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
0 1
0 1
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
10,179,365 
9,096,277 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
0 
 
 
Available-for-Sale Securities, Fair Value
10,179,365 
9,096,277 
 
Held-to-maturity, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Held-to-maturity, Portfolio Concentration Rated AAA To AA Amortized Cost
0 
 
 
Held-to-maturity, Portfolio Concentration Rated A To BBB Amortized Cost
0 
 
 
Held-to-maturity, Portfolio Concentration Rated Below Investment Grade Amortized Cost
0 
 
 
Held-to-maturity, Portfolio Concentration Not Rated Amortized Cost
0 
 
 
Held-to-maturity, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Held-to-maturity, Portfolio Concentration Rated AAA to AA, Fair Value
0 
 
 
Held-to-maturity, Portfolio Concentration Rated A to BBB, Fair Value
0 
 
 
Held-to-maturity, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
Held-to-maturity, Portfolio Concentration Rated Not Rated Fair Value
0 
 
 
U.S. agency residential mortgage backed securities - Other [Member]
 
 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
5 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
92,571 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
0 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
92,571 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
1,770 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
0 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
1,770 
 
 
Fixed Maturities Securities [Member]
 
 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
106,338 
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Less Than One Year
1,009 
 
 
Available-for-Sale Securities, Debt Maturities, One to Five Years
39,853 
 
 
Available-for-Sale Securities, Debt Maturities, Six to Ten Years
11,357 
 
 
Available-for-Sale Securities, Debt Maturities, Over Ten Years
51,515 2
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis
103,734 
 
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Less Than One Year, Fair Value
1,021 
 
 
Available-for-Sale Securities, Debt Maturities, One to Five Years Fair Value
40,839 
 
 
Available-for-Sale Securities, Debt Maturities, Six to Ten Years Fair Value
12,812 
 
 
Available-for-Sale Securities, Debt Maturities, Over Ten Years Fair Value
51,666 2
 
 
Available for sale securities
106,338 
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis Weighted Average Maturity
14.86 3
 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Less Than One Year Nominal Yield (in hundredths)
0.0404 
 
 
Available-for-Sale Securities, Debt Maturities, One to Five Years Nominal Yield (in hundredths)
0.0227 
 
 
Available-for-Sale Securities, Debt Maturities, Six to Ten Years Nominal Yield (in hundredths)
0.0400 
 
 
Available-for-Sale Securities, Debt Maturities, Over Ten Years Nominal Yield (in hundredths)
0.0260 2
 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield (in hundredths)
0.0264 
 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
106,338 
 
 
Held-to-maturity Securities [Member]
 
 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
 
52 
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
 
93,180 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
 
786 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
 
93,966 
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
 
1,843 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
 
22 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
 
1,865 
 
Held-to-maturity, Temporarily Impaired Securities [Abstract]
 
 
 
Held-to-maturity, Temporarily impaired Securities, Number of Securities
 
52 
 
Held-to-maturity, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Held-to-maturity, Temporarily impaired Securities, Less Than 12, Fair Value
 
93,180 
 
Held-to-maturity, Temporarily impaired Securities, 12 Months or longer, Fair Value
 
786 
 
Held-to-maturity, Temporarily impaired Securities, Total, Fair Value
 
93,966 
 
Held-to-maturity, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Held-to-maturity, Temporarily impaired Securities, Less Than 12, Unrealized Loss
 
1,843 
 
Held-to-maturity, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
 
22 
 
Held-to-maturity, Temporarily impaired Securities, Total, Unrealized Loss
 
1,865 
 
Held-to-maturity, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Held-to-maturity, Portfolio Concentration Rated US Government GSE Amortized Cost
121,704 
 
 
Held-to-maturity, Portfolio Concentration Rated AAA To AA Amortized Cost
230,802 
 
 
Held-to-maturity, Portfolio Concentration Rated A To BBB Amortized Cost
26,492 
 
 
Held-to-maturity, Portfolio Concentration Rated Below Investment Grade Amortized Cost
0 
 
 
Held-to-maturity, Portfolio Concentration Not Rated Amortized Cost
60,238 
 
 
Held-to-maturity, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Held-to-maturity, Portfolio Concentration Rated US Government or GSE, Fair Value
120,536 
 
 
Held-to-maturity, Portfolio Concentration Rated AAA to AA, Fair Value
252,054 
 
 
Held-to-maturity, Portfolio Concentration Rated A to BBB, Fair Value
27,329 
 
 
Held-to-maturity, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
Held-to-maturity, Portfolio Concentration Rated Not Rated Fair Value
62,738 
 
 
Held-to-maturity Securities [Member] |
Municipal And Other Tax Exempt Securities [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
66,435 
 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
68,837 
 
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
68,837 
 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
1 
37 
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
479 
12,482 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
0 
786 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
479 
13,268 
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
2 
211 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
0 
22 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
2 
233 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
0 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
40,419 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
11,579 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
13,026 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
1,411 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
66,435 
 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
0 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
42,574 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
11,692 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
13,026 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
1,545 
 
 
Available-for-Sale Securities, Fair Value
68,837 
 
 
Held-to-maturity, Temporarily Impaired Securities [Abstract]
 
 
 
Held-to-maturity, Temporarily impaired Securities, Number of Securities
1 
37 
 
Held-to-maturity, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Held-to-maturity, Temporarily impaired Securities, Less Than 12, Fair Value
479 
12,482 
 
Held-to-maturity, Temporarily impaired Securities, 12 Months or longer, Fair Value
0 
786 
 
Held-to-maturity, Temporarily impaired Securities, Total, Fair Value
479 
13,268 
 
Held-to-maturity, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Held-to-maturity, Temporarily impaired Securities, Less Than 12, Unrealized Loss
2 
211 
 
Held-to-maturity, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
0 
22 
 
Held-to-maturity, Temporarily impaired Securities, Total, Unrealized Loss
2 
233 
 
Held-to-maturity, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Held-to-maturity, Portfolio Concentration Rated US Government GSE Amortized Cost
0 4
 
 
Held-to-maturity, Portfolio Concentration Rated AAA To AA Amortized Cost
50,468 
 
 
Held-to-maturity, Portfolio Concentration Rated A To BBB Amortized Cost
25,892 
 
 
Held-to-maturity, Portfolio Concentration Rated Below Investment Grade Amortized Cost
0 
 
 
Held-to-maturity, Portfolio Concentration Not Rated Amortized Cost
52,337 
 
 
Held-to-maturity, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Held-to-maturity, Portfolio Concentration Rated US Government or GSE, Fair Value
0 4
 
 
Held-to-maturity, Portfolio Concentration Rated AAA to AA, Fair Value
52,224 
 
 
Held-to-maturity, Portfolio Concentration Rated A to BBB, Fair Value
26,729 
 
 
Held-to-maturity, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
Held-to-maturity, Portfolio Concentration Rated Not Rated Fair Value
54,717 
 
 
Held-to-maturity Securities [Member] |
Residential Mortgage Backed Securities [Member]
 
 
 
Held-to-maturity, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Held-to-maturity, Portfolio Concentration Rated US Government GSE Amortized Cost
121,704 4
 
 
Held-to-maturity, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Held-to-maturity, Portfolio Concentration Rated US Government or GSE, Fair Value
120,536 4
 
 
Held-to-maturity Securities [Member] |
Other Debt Obligations [Member]
 
 
 
Held-to-maturity, Temporarily Impaired Securities [Abstract]
 
 
 
Held-to-maturity, Temporarily impaired Securities, Number of Securities
 
15 
 
Held-to-maturity, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Held-to-maturity, Temporarily impaired Securities, Less Than 12, Fair Value
 
80,698 
 
Held-to-maturity, Temporarily impaired Securities, 12 Months or longer, Fair Value
 
0 
 
Held-to-maturity, Temporarily impaired Securities, Total, Fair Value
 
80,698 
 
Held-to-maturity, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Held-to-maturity, Temporarily impaired Securities, Less Than 12, Unrealized Loss
 
1,632 
 
Held-to-maturity, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
 
0 
 
Held-to-maturity, Temporarily impaired Securities, Total, Unrealized Loss
 
1,632 
 
Held-to-maturity, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Held-to-maturity, Portfolio Concentration Rated US Government GSE Amortized Cost
0 
 
 
Held-to-maturity, Portfolio Concentration Rated AAA To AA Amortized Cost
180,334 
 
 
Held-to-maturity, Portfolio Concentration Rated A To BBB Amortized Cost
600 
 
 
Held-to-maturity, Portfolio Concentration Rated Below Investment Grade Amortized Cost
0 
 
 
Held-to-maturity, Portfolio Concentration Not Rated Amortized Cost
7,901 
 
 
Held-to-maturity, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Held-to-maturity, Portfolio Concentration Rated US Government or GSE, Fair Value
0 
 
 
Held-to-maturity, Portfolio Concentration Rated AAA to AA, Fair Value
199,830 
 
 
Held-to-maturity, Portfolio Concentration Rated A to BBB, Fair Value
600 
 
 
Held-to-maturity, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
Held-to-maturity, Portfolio Concentration Rated Not Rated Fair Value
8,021 
 
 
Available-for-sale Securities [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
9,957,205 
9,035,418 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
10,179,365 
9,235,621 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
308,297 5
293,592 5
 
Available-for-Sale Securities, Gross Unrealized Loss
(13,331)5
(36,560)5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
(72,806)1
(56,829)1
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis
9,957,205 
 
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
10,179,365 
9,235,621 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield (in hundredths)
3.31 
 
 
Available-for-Sale Securities, Gross Realized Gain (Loss) Disclosures [Abstract]
 
 
 
Proceeds
2,725,760 
2,013,620 
3,242,282 
Gross realized gains
41,284 
26,007 
60,710 
Gross realized losses
7,140 
4,125 
1,390 
Related federal and state income tax expense
13,282 
8,512 
23,075 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
109 
160 
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
95,247 
1,619,438 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
435,233 
632,705 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
530,480 
2,252,143 
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
2,616 
21,669 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
83,521 
71,720 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
86,137 
93,389 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
9,298,390 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
69,540 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
80,538 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
473,483 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
35,254 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
9,957,205 
9,035,418 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
9,589,183 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
69,128 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
77,900 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
394,371 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
48,783 
 
 
Available-for-Sale Securities, Fair Value
10,179,365 
9,235,621 
 
Available-for-sale Securities [Member] |
US Treasuries [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
1,001 
 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
1,006 
 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
5 5
 
 
Available-for-Sale Securities, Gross Unrealized Loss
0 5
 
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
0 1
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Less Than One Year
0 
 
 
Available-for-Sale Securities, Debt Maturities, One to Five Years
1,001 
 
 
Available-for-Sale Securities, Debt Maturities, Six to Ten Years
0 
 
 
Available-for-Sale Securities, Debt Maturities, Over Ten Years
0 2
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis
1,001 
 
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Less Than One Year, Fair Value
0 
 
 
Available-for-Sale Securities, Debt Maturities, One to Five Years Fair Value
1,006 
 
 
Available-for-Sale Securities, Debt Maturities, Six to Ten Years Fair Value
0 
 
 
Available-for-Sale Securities, Debt Maturities, Over Ten Years Fair Value
0 
 
 
Available for sale securities
1,006 
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis Weighted Average Maturity
1.37 3
 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Less Than One Year Nominal Yield (in hundredths)
0 6
 
 
Available-for-Sale Securities, Debt Maturities, One to Five Years Nominal Yield (in hundredths)
0.0055 6
 
 
Available-for-Sale Securities, Debt Maturities, Six to Ten Years Nominal Yield (in hundredths)
0 
 
 
Available-for-Sale Securities, Debt Maturities, Over Ten Years Nominal Yield (in hundredths)
0 2 6
 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield (in hundredths)
0.0055 6
 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
1,001 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
1,001 
 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
1,006 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
0 
 
 
Available-for-Sale Securities, Fair Value
1,006 
 
 
Available-for-sale Securities [Member] |
Municipal And Other Tax Exempt Securities [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
66,435 
72,190 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
68,837 
72,942 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
2,543 5
1,172 5
 
Available-for-Sale Securities, Gross Unrealized Loss
(141)5
(315)5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
0 1
(105)1
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Less Than One Year
1,009 
 
 
Available-for-Sale Securities, Debt Maturities, One to Five Years
8,454 
 
 
Available-for-Sale Securities, Debt Maturities, Six to Ten Years
11,357 
 
 
Available-for-Sale Securities, Debt Maturities, Over Ten Years
45,615 2
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis
66,435 
 
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Less Than One Year, Fair Value
1,021 
 
 
Available-for-Sale Securities, Debt Maturities, One to Five Years Fair Value
9,238 
 
 
Available-for-Sale Securities, Debt Maturities, Six to Ten Years Fair Value
12,812 
 
 
Available-for-Sale Securities, Debt Maturities, Over Ten Years Fair Value
45,766 2
 
 
Available for sale securities
68,837 
72,942 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis Weighted Average Maturity
18.98 3
 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Less Than One Year Nominal Yield (in hundredths)
4.04 6
 
 
Available-for-Sale Securities, Debt Maturities, One to Five Years Nominal Yield (in hundredths)
0.0416 6
 
 
Available-for-Sale Securities, Debt Maturities, Six to Ten Years Nominal Yield (in hundredths)
0.0400 6
 
 
Available-for-Sale Securities, Debt Maturities, Over Ten Years Nominal Yield (in hundredths)
0.0269 2 6
 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield (in hundredths)
0.0312 6
 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
26 
42 
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
5,008 
22,271 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
21,659 
25,235 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
26,667 
47,506 
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
7 
171 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
134 
249 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
141 
420 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
66,435 
72,190 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
68,837 
72,942 
 
Available-for-sale Securities [Member] |
Residential Mortgage Backed Securities [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
9,800,457 7
8,908,135 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
10,007,343 
9,091,118 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
290,795 5
275,625 5
 
Available-for-Sale Securities, Gross Unrealized Loss
(11,103)5
(35,918)5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
(72,806)1
(56,724)1
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
10,007,343 
9,091,118 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
70 
116 
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
78,871 
1,597,167 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
411,023 
604,592 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
489,894 
2,201,759 
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
849 
21,498 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
83,060 
71,144 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
83,909 
92,642 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
9,297,389 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
23,221 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
19,390 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
460,457 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
9,800,457 7
8,908,135 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
9,588,177 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
20,654 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
17,167 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
381,345 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
0 
 
 
Available-for-Sale Securities, Fair Value
10,007,343 
9,091,118 
 
Available-for-sale Securities [Member] |
Residential Mortgage Backed Securities [Member] |
US Government Agencies Debt Securities [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
9,297,389 
8,193,705 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
9,588,177 
8,446,909 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
290,795 5
274,702 5
 
Available-for-Sale Securities, Gross Unrealized Loss
(7)5
(21,498)5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
 
0 1
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
9,588,177 
8,446,909 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
3 
41 
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
70,729 
1,597,167 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
0 
0 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
70,729 
1,597,167 
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
7 
21,498 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
0 
0 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
7 
21,498 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
9,297,389 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
9,297,389 
8,193,705 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
9,588,177 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
0 
 
 
Available-for-Sale Securities, Fair Value
9,588,177 
8,446,909 
 
Available-for-sale Securities [Member] |
Residential Mortgage Backed Securities [Member] |
US Government Agencies Debt Securities [Member] |
FNMA [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
5,823,972 
4,791,438 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
5,987,287 
4,925,693 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
163,319 5
147,024 5
 
Available-for-Sale Securities, Gross Unrealized Loss
(4)5
(12,769)5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
0 1
0 1
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
5,987,287 
4,925,693 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
2 
26 
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
68,657 
1,099,710 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
0 
0 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
68,657 
1,099,710 
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
4 
12,769 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
0 
0 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
4 
12,769 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
5,823,972 4
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
5,823,972 
4,791,438 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
5,987,287 4
 
 
Available-for-Sale Securities, Fair Value
5,987,287 
4,925,693 
 
Available-for-sale Securities [Member] |
Residential Mortgage Backed Securities [Member] |
US Government Agencies Debt Securities [Member] |
FHLMC [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
2,756,180 
2,545,208 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
2,846,215 
2,620,066 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
90,035 5
83,341 5
 
Available-for-Sale Securities, Gross Unrealized Loss
0 5
(8,483)5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
0 1
 
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
2,846,215 
2,620,066 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
 
12 
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
 
491,776 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
 
0 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
 
491,776 
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
 
8,483 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
 
0 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
 
8,483 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
2,756,180 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
2,756,180 
2,545,208 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
2,846,215 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
0 
 
 
Available-for-Sale Securities, Fair Value
2,846,215 
2,620,066 
 
Available-for-sale Securities [Member] |
Residential Mortgage Backed Securities [Member] |
US Government Agencies Debt Securities [Member] |
GNMA [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
647,569 
765,046 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
678,924 
801,993 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
31,358 5
37,193 5
 
Available-for-Sale Securities, Gross Unrealized Loss
(3)5
(246)5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
0 1
 
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
678,924 
801,993 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
1 
3 
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
2,072 
5,681 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
0 
0 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
2,072 
5,681 
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
3 
246 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
0 
0 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
3 
246 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
647,569 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
647,569 
765,046 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
678,924 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
0 
 
 
Available-for-Sale Securities, Fair Value
678,924 
801,993 
 
Available-for-sale Securities [Member] |
Residential Mortgage Backed Securities [Member] |
US Government Agencies Debt Securities [Member] |
Other Agency [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
69,668 
92,013 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
75,751 
99,157 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
6,083 5
7,144 5
 
Available-for-Sale Securities, Gross Unrealized Loss
0 5
0 5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
0 1
0 1
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
75,751 
99,157 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
69,668 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
69,668 
92,013 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
75,751 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
0 
 
 
Available-for-Sale Securities, Fair Value
75,751 
99,157 
 
Available-for-sale Securities [Member] |
Residential Mortgage Backed Securities [Member] |
Private Issue [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
503,068 
714,430 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
419,166 
644,209 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
0 5
923 5
 
Available-for-Sale Securities, Gross Unrealized Loss
(11,096)5
(14,420)5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
(72,806)1
(56,724)1
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
419,166 
644,209 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
67 8
75 9
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
8,142 8
0 9
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
411,023 8
604,592 9
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
419,165 8
604,592 9
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
842 8
0 9
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
83,060 8
71,144 9
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
83,902 8
71,144 9
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
0 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
23,221 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
19,390 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
460,457 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
503,068 
714,430 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
0 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
20,654 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
17,167 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
381,345 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
0 
 
 
Available-for-Sale Securities, Fair Value
419,166 
644,209 
 
Available-for-sale Securities [Member] |
Residential Mortgage Backed Securities [Member] |
Private Issue [Member] |
Alt A [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
168,461 
220,332 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
132,242 
186,674 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
0 5
0 5
 
Available-for-Sale Securities, Gross Unrealized Loss
0 5
(353)5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
(36,219)1
(33,305)1
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
132,242 
186,674 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
19 8
22 9
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
0 8
0 9
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
132,242 8
186,675 9
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
132,242 8
186,675 9
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
0 8
0 9
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
36,219 8
33,658 9
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
36,219 8
33,658 9
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
0 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
168,461 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
168,461 
220,332 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
0 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
132,242 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
0 
 
 
Available-for-Sale Securities, Fair Value
132,242 
186,674 
 
Available-for-sale Securities [Member] |
Residential Mortgage Backed Securities [Member] |
Private Issue [Member] |
Jumbo A Loans [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
334,607 
494,098 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
286,924 
457,535 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
0 5
923 5
 
Available-for-Sale Securities, Gross Unrealized Loss
(11,096)5
(14,067)5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
(36,587)1
(23,419)1
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
286,924 
457,535 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
48 8
53 9
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
8,142 8
0 9
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
278,781 8
37,486 9
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
286,923 8
37,486 9
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
842 8
0 9
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
46,841 8
417,917 9
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
47,683 8
417,917 9
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
0 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
23,221 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
19,390 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
291,996 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
334,607 
494,098 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
0 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
20,654 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
17,167 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
249,103 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
0 
 
 
Available-for-Sale Securities, Fair Value
286,924 
457,535 
 
Available-for-sale Securities [Member] |
Other Debt Obligations [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
36,298 
6,401 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
36,495 
6,401 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
197 5
0 5
 
Available-for-Sale Securities, Gross Unrealized Loss
0 5
0 5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
0 1
0 1
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Less Than One Year
0 
1 
 
Available-for-Sale Securities, Debt Maturities, One to Five Years
30,398 
0 
 
Available-for-Sale Securities, Debt Maturities, Six to Ten Years
0 
0 
 
Available-for-Sale Securities, Debt Maturities, Over Ten Years
5,900 2
6,400 2
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis
36,298 
6,401 
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Less Than One Year, Fair Value
0 
1 
 
Available-for-Sale Securities, Debt Maturities, One to Five Years Fair Value
30,595 
0 
 
Available-for-Sale Securities, Debt Maturities, Six to Ten Years Fair Value
0 
0 
 
Available-for-Sale Securities, Debt Maturities, Over Ten Years Fair Value
5,900 2
6,400 2
 
Available for sale securities
36,495 
6,401 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis Weighted Average Maturity
7.68 3
0.3256 3
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Less Than One Year Nominal Yield (in hundredths)
0 6
0.0761 10
 
Available-for-Sale Securities, Debt Maturities, One to Five Years Nominal Yield (in hundredths)
0.0181 6
0 10
 
Available-for-Sale Securities, Debt Maturities, Six to Ten Years Nominal Yield (in hundredths)
0 6
0 10
 
Available-for-Sale Securities, Debt Maturities, Over Ten Years Nominal Yield (in hundredths)
0.0187 2 6
0.0189 2 6
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield (in hundredths)
0.0182 
0.0189 10
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
0 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
5,900 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
30,398 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
36,298 
6,401 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
0 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
5,900 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
30,595 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
Available-for-Sale Securities, Fair Value
36,495 
6,401 
 
Available-for-sale Securities [Member] |
Equity Securities And Mutual Funds [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
33,843 
29,181 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
47,238 
43,046 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
13,727 5
14,192 5
 
Available-for-Sale Securities, Gross Unrealized Loss
(332)5
(327)5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
0 1
0 1
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
47,238 
43,046 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
7 
2 
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
221 
0 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
2,551 
2,878 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
2,772 
2,878 
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
5 
0 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
327 
327 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
332 
327 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
0 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
33,843 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
33,843 
29,181 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
0 4
0 4
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
0 
0 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
0 
0 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
0 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
47,238 
43,046 
 
Available-for-Sale Securities, Fair Value
47,238 
43,046 
 
Available-for-sale Securities [Member] |
Equity Securities Mutual Funds And Other Stock [Member]
 
 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
65,684 11
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis
53,014 11
 
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
65,684 11
 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield (in hundredths)
0.0074 
 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
65,684 11
 
 
Available-for-sale Securities [Member] |
Perpetual Preferred Stock [Member]
 
 
 
Available-for-Sale Securities, Amortized cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Cost Basis
19,171 
19,511 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
18,446 
22,114 
 
Available-for-Sale Securities, Gross Unrealized Gain (loss) [Abstract]
 
 
 
Available-for-Sale Securities, Gross Unrealized Gain
1,030 5
2,603 5
 
Available-for-Sale Securities, Gross Unrealized Loss
(1,755)5
0 5
 
Available-for-Sale Securities, Other Than Temporary Impairment [Abstract]
 
 
 
Available-for-Sale Securities, Other Than Temporary Impairment
 
0 1
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
18,446 
22,114 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
6 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
11,147 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
0 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
11,147 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
1,755 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
0 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
1,755 
 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Amortized Cost [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Amortized Cost
0 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Amortized Cost
19,171 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Not Rated Amortized Cost
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Total, Amortized Cost
19,171 
19,511 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated US Government or GSE, Fair Value
0 4
 
 
Available-for-Sale Securities, Portfolio Concentration Rated AAA to AA, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated A to BBB, Fair Value
18,446 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Below Investment Grade, Fair Value
0 
 
 
Available-for-Sale Securities, Portfolio Concentration Rated Not Rated Fair Value
0 
 
 
Available-for-Sale Securities, Fair Value
18,446 
22,114 
 
Available-for-sale Securities [Member] |
Collateralized Mortgage Backed Securities [Member]
 
 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
10,007,343 
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis
9,800,457 7
 
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
10,007,343 
 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield (in hundredths)
0.0333 12
 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
10,007,343 
 
 
Available For Sale And Investment Securities [Member]
 
 
 
Available-for-Sale Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
10,179,365 
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Amortized Cost Basis
9,957,205 
 
 
Available-for-Sale Securities, Debt Maturities, Fair Value [Abstract]
 
 
 
Available for sale securities
10,179,365 
 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield [Abstract]
 
 
 
Available-for-Sale Securities, Debt Maturities, Nominal Yield (in hundredths)
0.0331 
 
 
Available-for-Sale Securities, Temporarily Impaired Securities [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Number of Securities
6 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Fair Value
93,050 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Fair Value
0 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Fair Value
93,050 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Unrealized Loss [Abstract]
 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Less Than 12, Unrealized Loss
1,772 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, 12 Months or longer, Unrealized Loss
0 
 
 
Available-for-Sale Securities, Temporarily impaired Securities, Total, Unrealized Loss
1,772 
 
 
Available-for-Sale Securities, Portfolio Concentration Ratings, Fair Value [Abstract]
 
 
 
Available-for-Sale Securities, Fair Value
$ 10,179,365 
 
 
Securities Part 4 (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Distribution of Amortized Cost and Fair Value For Below Investment Grade Residential Mortgage-Backed Securities [Abstract]
 
Number of Securities
67 
Amortized Cost
$ 503,068 
Fair Value
419,166 
Credit losses Recognized [Abstract]
 
Number of Securities in Current Period
50 
Amount of Credit Losses Recognized in Current Period
21,949 
Number of Securities in Life-to-Date
55 
Amount of Credit Losses Recognized in Life-to-Date
73,554 
Jumbo A Loans [Member]
 
Distribution of Amortized Cost and Fair Value For Below Investment Grade Residential Mortgage-Backed Securities [Abstract]
 
Number of Securities
48 
Amortized Cost
334,607 
Fair Value
286,924 
Credit losses Recognized [Abstract]
 
Number of Securities in Current Period
32 
Amount of Credit Losses Recognized in Current Period
13,740 
Number of Securities in Life-to-Date
36 
Amount of Credit Losses Recognized in Life-to-Date
23,623 
Below Investment Grade [Member] |
Alt A [Member]
 
Distribution of Amortized Cost and Fair Value For Below Investment Grade Residential Mortgage-Backed Securities [Abstract]
 
Number of Securities
19 
Amortized Cost
168,461 
Fair Value
132,242 
Credit losses Recognized [Abstract]
 
Number of Securities in Current Period
18 
Amount of Credit Losses Recognized in Current Period
8,209 
Number of Securities in Life-to-Date
19 
Amount of Credit Losses Recognized in Life-to-Date
49,931 
Below Investment Grade [Member] |
Jumbo A Loans [Member]
 
Distribution of Amortized Cost and Fair Value For Below Investment Grade Residential Mortgage-Backed Securities [Abstract]
 
Number of Securities
43 
Amortized Cost
291,996 
Fair Value
249,103 
Credit losses Recognized [Abstract]
 
Number of Securities in Current Period
32 
Amount of Credit Losses Recognized in Current Period
13,740 
Number of Securities in Life-to-Date
36 
Amount of Credit Losses Recognized in Life-to-Date
23,623 
AAA to AA [Member] |
Jumbo A Loans [Member]
 
Distribution of Amortized Cost and Fair Value For Below Investment Grade Residential Mortgage-Backed Securities [Abstract]
 
Number of Securities
3 
Amortized Cost
23,221 
Fair Value
20,654 
Credit losses Recognized [Abstract]
 
Number of Securities in Current Period
0 
Amount of Credit Losses Recognized in Current Period
0 
Number of Securities in Life-to-Date
0 
Amount of Credit Losses Recognized in Life-to-Date
0 
A to BBB [Member] |
Jumbo A Loans [Member]
 
Distribution of Amortized Cost and Fair Value For Below Investment Grade Residential Mortgage-Backed Securities [Abstract]
 
Number of Securities
2 
Amortized Cost
19,390 
Fair Value
17,167 
Credit losses Recognized [Abstract]
 
Number of Securities in Current Period
0 
Amount of Credit Losses Recognized in Current Period
0 
Number of Securities in Life-to-Date
0 
Amount of Credit Losses Recognized in Life-to-Date
$ 0 
Securities Part 5 (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2010
Dec. 31, 2009
Other-than Temporary Impairment Credit Losses Recognized in Earnings [Roll Forward]
 
 
Balance of credit-related OTTI recognized on available for sale debt securities at beginning of period
$ 52,624 
$ 25,142 
Additions for credit-related OTTI not previously recognized
3,368 
3,514 
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
20,139 
23,968 
Balance of credit-related OTTI recognized on available for sale debt securities, end of period
$ 76,131 
$ 52,624 
Securities Part 6 (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Other than temporary impairments recognized in earnings [abstract]
 
 
 
Total other-than-temporary impairment losses
$ 10,578,000 
$ 29,960,000 
$ 129,154,000 
Less: Portion of OTTI recognized in other comprehensive income
(12,929,000)
2,151,000 
94,741,000 
Total OTTI recognized in earnings
(23,507,000)
(27,809,000)
(34,413,000)
Taxable equivalent basis - effective tax rate (in hundredths)
39.00% 
 
 
Average expected Life of Mortgage Backed Security (in years)
2.92 
 
 
Contractual maturity dates reset period (in days)
35D 
 
 
Securities Pledged as Collateral, Amortized Cost
4,400,000,000 
5,300,000,000 
 
Other-than-temporary charge of impaired debt securities
 
 
1,300,000 
Impaired debt securities sold
 
 
91,000,000 
Aggregate Unrealized Loss on Private Issue RMBS
79,000,000 
 
 
Estimated Unemployment Rate , Maximum (in hundredths)
9.50% 
10.00% 
 
Estimated Unemployment Rate, Minimum (in hundredths)
8.00% 
8.00% 
 
Estimated Liquidation Costs For Jumbo Loans , Minimum (in hundredths)
25.00% 
 
 
Estimated Liquidation Costs For Jumbo Loans , Maximum (in hundredths)
30.00% 
 
 
Estimated Liquidation Costs For Alt A Loans , Minimum (in hundredths)
35.00% 
 
 
Estimated Liquidation Costs For Alt A Loans , Maximum (in hundredths)
38.00% 
 
 
Estimated housing price depreciation, Next Twelve Months (in hundredths)
5.00% 
7.50% 
 
Discount Rate Used To Estimate Cash Flow, Minimum (in hundredths)
2.00% 
2.69% 
 
Discount Rate Used To Estimate Cash Flow, Maximum (in hundredths)
6.25% 
6.00% 
 
Collateral value threshold for adjusted loan-to-value ratio minimum percentage (in hundredths)
85.00% 
 
 
Impaired equity securities evaluation period for fair value recoveries, maximum (in years)
3Y 
 
 
Fair value option securities [Abstract]
 
 
 
Fair value, fair value option securities
651,226,000 
428,021,000 
 
Net unrealized gain (loss), fair value option securities
19,251,000 
(5,641,000)
 
US Government Agencies Debt Securities [Member]
 
 
 
Fair value option securities [Abstract]
 
 
 
Fair value, fair value option securities
626,109,000 
428,021,000 
 
Net unrealized gain (loss), fair value option securities
19,233,000 
(5,641,000)
 
Private Issue [Member]
 
 
 
Fair value option securities [Abstract]
 
 
 
Fair value, fair value option securities
25,117,000 
0 
 
Net unrealized gain (loss), fair value option securities
18,000 
0 
 
Municipal And Other Tax Exempt Securities [Member]
 
 
 
Other than temporary impairments recognized in earnings [abstract]
 
 
 
Other-than-temporary charge of impaired debt securities
1,600,000 
1,000,000 
 
Residential Mortgage Backed Securities [Member]
 
 
 
Other than temporary impairments recognized in earnings [abstract]
 
 
 
Other-than-temporary charge of impaired debt securities
21,900,000 
26,500,000 
 
Equity Securities And Mutual Funds [Member]
 
 
 
Other than temporary impairments recognized in earnings [abstract]
 
 
 
Total other-than-temporary impairment losses
0 
(327,000)
0 
Perpetual Preferred Stock [Member]
 
 
 
Other than temporary impairments recognized in earnings [abstract]
 
 
 
Total other-than-temporary impairment losses
0 
0 
(8,008,000)
Debt Securities Due To Change In Intent To Sell [Member]
 
 
 
Other than temporary impairments recognized in earnings [abstract]
 
 
 
Total other-than-temporary impairment losses
0 
0 
(1,263,000)
Debt Securities Not Intended For Sale [Member]
 
 
 
Other than temporary impairments recognized in earnings [abstract]
 
 
 
Total other-than-temporary impairment losses
(10,578,000)
(29,633,000)
(119,883,000)
Less: Portion of OTTI recognized in other comprehensive income
(12,929,000)
(2,151,000)
(94,741,000)
OTTI recognized in earnings related to credit losses on debt securities not intended for sale
$ (23,507,000)
$ (27,482,000)
$ (25,142,000)
Derivatives, Fair Value of Derivatives Contracts (Details) (USD $)
Dec. 31, 2011
Dec. 31, 2010
Notional Amount of Derivatives [Abstract]
 
 
Derivative Asset, Notional Amount, Gross Basis
$ 12,417,696,000 1
$ 14,091,727,000 1
Derivative Liability, Notional Amount, Gross Basis
12,579,110,000 
14,038,235,000 
Derivative Asset, Fair Value, Net [Abstract]
 
 
Derivative Asset, Fair Value, Gross Asset
437,878,000 
498,443,000 
Derivative contracts, assets
293,859,000 2
270,445,000 2
Derivative liability, fair value [Abstract]
 
 
Derivative Liability, Fair Value, Gross Liability
442,563,000 
497,388,000 
Derivative contracts
236,522,000 2
215,420,000 2
Increase in cash margin obligation for derivative holdings with a decrease in credit rating from A1 to below investment grade
51,000,000 
 
Agriculture Contracts [Member]
 
 
Notional Amount of Derivatives [Abstract]
 
 
Derivative Asset, Notional Amount, Gross Basis
146,252,000 1
183,250,000 1
Derivative Liability, Notional Amount, Gross Basis
148,924,000 
186,709,000 
Derivative Asset, Fair Value, Net [Abstract]
 
 
Derivative Asset, Fair Value, Gross Asset
4,761,000 
10,616,000 
Derivative contracts, assets
782,000 2
4,226,000 2
Derivative liability, fair value [Abstract]
 
 
Derivative Liability, Fair Value, Gross Liability
4,680,000 
10,534,000 
Derivative contracts
701,000 2
4,144,000 2
Customer Derivative Before Cash Collateral [Member]
 
 
Notional Amount of Derivatives [Abstract]
 
 
Derivative Asset, Notional Amount, Gross Basis
12,373,696,000 1
13,967,727,000 1
Derivative Liability, Notional Amount, Gross Basis
12,554,110,000 
14,020,258,000 
Derivative Asset, Fair Value, Net [Abstract]
 
 
Derivative Asset, Fair Value, Gross Asset
431,497,000 
496,493,000 
Derivative contracts, assets
299,168,000 2
283,512,000 2
Derivative liability, fair value [Abstract]
 
 
Derivative Liability, Fair Value, Gross Liability
442,268,000 
496,291,000 
Derivative contracts
309,939,000 2
283,310,000 2
Energy Contracts [Member]
 
 
Notional Amount of Derivatives [Abstract]
 
 
Derivative Asset, Notional Amount, Gross Basis
1,554,400,000 1
1,914,519,000 1
Derivative Liability, Notional Amount, Gross Basis
1,799,367,000 
2,103,923,000 
Derivative Asset, Fair Value, Net [Abstract]
 
 
Derivative Asset, Fair Value, Gross Asset
158,625,000 
188,655,000 
Derivative contracts, assets
62,945,000 2
76,746,000 2
Derivative liability, fair value [Abstract]
 
 
Derivative Liability, Fair Value, Gross Liability
171,050,000 
191,075,000 
Derivative contracts
75,370,000 2
79,166,000 2
Interest Rate Contract [Member]
 
 
Notional Amount of Derivatives [Abstract]
 
 
Derivative Asset, Notional Amount, Gross Basis
10,391,244,000 1 3
11,664,409,000 1 3
Derivative Liability, Notional Amount, Gross Basis
10,324,244,000 1 3
11,524,077,000 1 3
Derivative Asset, Fair Value, Net [Abstract]
 
 
Derivative Asset, Fair Value, Gross Asset
182,450,000 1 3
235,961,000 1 3
Derivative contracts, assets
149,780,000 1 2 3
141,279,000 1 2 3
Derivative liability, fair value [Abstract]
 
 
Derivative Liability, Fair Value, Gross Liability
181,102,000 1 3
233,421,000 1 3
Derivative contracts
148,432,000 1 2 3
138,739,000 1 2 3
Foreign Exchange Contract [Member]
 
 
Notional Amount of Derivatives [Abstract]
 
 
Derivative Asset, Notional Amount, Gross Basis
73,153,000 1
45,014,000 1
Derivative Liability, Notional Amount, Gross Basis
72,928,000 
45,014,000 
Derivative Asset, Fair Value, Net [Abstract]
 
 
Derivative Asset, Fair Value, Gross Asset
73,153,000 
45,014,000 
Derivative contracts, assets
73,153,000 2
45,014,000 2
Derivative liability, fair value [Abstract]
 
 
Derivative Liability, Fair Value, Gross Liability
72,928,000 
45,014,000 
Derivative contracts
72,928,000 2
45,014,000 2
Equity Options [Member]
 
 
Notional Amount of Derivatives [Abstract]
 
 
Derivative Asset, Notional Amount, Gross Basis
208,647,000 1
160,535,000 1
Derivative Liability, Notional Amount, Gross Basis
208,647,000 
160,535,000 
Derivative Asset, Fair Value, Net [Abstract]
 
 
Derivative Asset, Fair Value, Gross Asset
12,508,000 
16,247,000 
Derivative contracts, assets
12,508,000 2
16,247,000 2
Derivative liability, fair value [Abstract]
 
 
Derivative Liability, Fair Value, Gross Liability
12,508,000 
16,247,000 
Derivative contracts
12,508,000 2
16,247,000 2
Cash Collateral [Member]
 
 
Notional Amount of Derivatives [Abstract]
 
 
Derivative Asset, Notional Amount, Gross Basis
0 1
0 1
Derivative Liability, Notional Amount, Gross Basis
0 
0 
Derivative Asset, Fair Value, Net [Abstract]
 
 
Derivative Asset, Fair Value, Gross Asset
0 
0 
Derivative contracts, assets
(11,690,000)2
(15,017,000)2
Derivative liability, fair value [Abstract]
 
 
Derivative Liability, Fair Value, Gross Liability
0 
0 
Derivative contracts
(73,712,000)2
(68,987,000)2
Total Customer Derivatives [Member]
 
 
Notional Amount of Derivatives [Abstract]
 
 
Derivative Asset, Notional Amount, Gross Basis
12,373,696,000 1
13,967,727,000 1
Derivative Liability, Notional Amount, Gross Basis
12,554,110,000 
14,020,258,000 
Derivative Asset, Fair Value, Net [Abstract]
 
 
Derivative Asset, Fair Value, Gross Asset
431,497,000 
496,493,000 
Derivative contracts, assets
287,478,000 2
268,495,000 2
Derivative liability, fair value [Abstract]
 
 
Derivative Liability, Fair Value, Gross Liability
442,268,000 
496,291,000 
Derivative contracts
236,227,000 2
214,323,000 2
Interest Rate Risk Management Program [Member]
 
 
Notional Amount of Derivatives [Abstract]
 
 
Derivative Asset, Notional Amount, Gross Basis
44,000,000 
124,000,000 1
Derivative Liability, Notional Amount, Gross Basis
25,000,000 
17,977,000 
Derivative Asset, Fair Value, Net [Abstract]
 
 
Derivative Asset, Fair Value, Gross Asset
6,381,000 
1,950,000 
Derivative contracts, assets
6,381,000 
1,950,000 2
Derivative liability, fair value [Abstract]
 
 
Derivative Liability, Fair Value, Gross Liability
295,000 
1,097,000 
Derivative contracts
$ 295,000 
$ 1,097,000 2
Derivatives, Derivatives Instruments Gain (Loss) in Income Statement (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Trading Activity, Gains and Losses, Net [Line Items]
 
 
Trading Activity, Gains and Losses, Net
$ 5,314 
$ 11,739 
Derivative Gain (Loss) on Derivative, Net [Abstract]
 
 
Gain (Loss) on Derivatives, Net
2,526 
3,032 
Total Customer Derivatives |
Other Operating Revenue [Member]
 
 
Trading Activity, Gains and Losses, Net [Line Items]
 
 
Trading Activity, Gains and Losses, Net
5,314 
11,739 
Derivative Gain (Loss) on Derivative, Net [Abstract]
 
 
Gain (Loss) on Derivatives, Net
0 
0 
Energy Commodity [Member] |
Other Operating Revenue [Member]
 
 
Trading Activity, Gains and Losses, Net [Line Items]
 
 
Trading Activity, Gains and Losses, Net
5,262 
7,951 
Derivative Gain (Loss) on Derivative, Net [Abstract]
 
 
Gain (Loss) on Derivatives, Net
0 
0 
Agriculture Commodity [Member] |
Other Operating Revenue [Member]
 
 
Trading Activity, Gains and Losses, Net [Line Items]
 
 
Trading Activity, Gains and Losses, Net
341 
629 
Derivative Gain (Loss) on Derivative, Net [Abstract]
 
 
Gain (Loss) on Derivatives, Net
0 
0 
Foreign Exchange [Member] |
Other Operating Revenue [Member]
 
 
Trading Activity, Gains and Losses, Net [Line Items]
 
 
Trading Activity, Gains and Losses, Net
565 
375 
Derivative Gain (Loss) on Derivative, Net [Abstract]
 
 
Gain (Loss) on Derivatives, Net
0 
0 
Interest Rate [Member] |
Other Operating Revenue [Member]
 
 
Trading Activity, Gains and Losses, Net [Line Items]
 
 
Trading Activity, Gains and Losses, Net
(854)
2,784 
Derivative Gain (Loss) on Derivative, Net [Abstract]
 
 
Gain (Loss) on Derivatives, Net
0 
0 
Equity Options [Member] |
Other Operating Revenue [Member]
 
 
Trading Activity, Gains and Losses, Net [Line Items]
 
 
Trading Activity, Gains and Losses, Net
0 
0 
Derivative Gain (Loss) on Derivative, Net [Abstract]
 
 
Gain (Loss) on Derivatives, Net
0 
0 
Interest Rate Risk Management Trading New [Member] |
Other Operating Revenue [Member]
 
 
Trading Activity, Gains and Losses, Net [Line Items]
 
 
Trading Activity, Gains and Losses, Net
0 
0 
Derivative Gain (Loss) on Derivative, Net [Abstract]
 
 
Gain (Loss) on Derivatives, Net
$ 2,526 
$ 3,032 
Derivatives, Interest Rate Risk Management Programs (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Derivatives [Abstract]
 
 
 
Net interest revenue increase from settlements on interest rate swaps
$ 1.6 
$ 4.0 
$ 13.1 
Loans and Allowances for Credit Losses Part 1 (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Loan receivables disclosure [Abstract]
 
 
Loans receivables with fixed rate of interest
$ 5,395,296,000 
$ 4,934,153,000 
Loans receivables with variable rate of interest
5,673,161,000 
5,478,069,000 
Loan receivable non-accrual
201,286,000 
230,814,000 
Total
11,269,743,000 
10,643,036,000 
Accruing loans past due (90 days)
2,498,000 
7,966,000 
Foregone interest on nonaccrual loans
11,726,000 
16,818,000 
Loans receivable, other information [Abstract]
 
 
Amount of total loan portfolio to businesses and individuals in Oklahoma
5,000,000,000 
4,900,000,000 
Percentage of total loan portfolio to businesses and individuals in Oklahoma (in hundredths)
44.00% 
46.00% 
Amount of total loan portfolio to businesses and individuals in Texas
3,400,000,000 
3,000,000,000 
Percentage of total loan portfolio to businesses and individuals in Texas (in hundredths)
31.00% 
28.00% 
Balance of loans with balances less than $10 million
11,269,743,000 
10,643,036,000 
Credit Commitments [Abstract]
 
 
Outstanding commitments to extend credit
6,100,000,000 
 
Outstanding standby letters of credit
37,000,000 
 
Outstanding commercial letters of credit
7,400,000 
 
Percentage of committed production loans secured by properties primarily producing oil
51.00% 
 
Percentage of committed production loans secured by properties primarily producing gas
47.00% 
 
Commercial Portfolio Segment [Member]
 
 
Loan receivables disclosure [Abstract]
 
 
Loans receivables with fixed rate of interest
3,272,862,000 
2,883,905,000 
Loans receivables with variable rate of interest
3,229,781,000 
3,011,636,000 
Loan receivable non-accrual
68,811,000 
38,455,000 
Total
6,571,454,000 
5,933,996,000 
Loans receivable, other information [Abstract]
 
 
Balance of loans with balances less than $10 million
6,571,454,000 
5,933,996,000 
Amount of loan portfolio to businesses in Oklahoma
2,700,000,000 
2,600,000,000 
Percentage of loan portfolio to businesses in Oklahoma (in hundredths)
41.00% 
43.00% 
Amount of loan portfolio to businesses in Texas
2,200,000,000 
1,900,000,000 
Percentage of loan portfolio to businesses in Texas (in hundredths)
34.00% 
32.00% 
Commercial Portfolio Segment [Member] |
Commercial Energy Financing Receivable [Member]
 
 
Loan receivables disclosure [Abstract]
 
 
Total
993,000,000,000 
 
Loans receivable, other information [Abstract]
 
 
Percentage of total loan portfolio provided to this classification (in hundredths)
18.00% 
 
Balance of loans with balances less than $10 million
993,000,000,000 
 
Maximum loan amount for certain individual loans in category
10,000,000 
 
Commercial Portfolio Segment [Member] |
Commercial Services Financing Receivable [Member]
 
 
Loan receivables disclosure [Abstract]
 
 
Total
 
1,000,000,000 
Loans receivable, other information [Abstract]
 
 
Balance of loans with balances less than $10 million
 
1,000,000,000 
Maximum loan amount for certain individual loans in category
 
10,000,000 
Commercial Real Estate Portfolio Segment [Member]
 
 
Loan receivables disclosure [Abstract]
 
 
Loans receivables with fixed rate of interest
887,923,000 
829,836,000 
Loans receivables with variable rate of interest
1,293,793,000 
1,297,148,000 
Loan receivable non-accrual
99,193,000 
150,366,000 
Total
2,279,909,000 
2,277,350,000 
Loans receivable, other information [Abstract]
 
 
Balance of loans with balances less than $10 million
2,279,909,000 
2,277,350,000 
Percentage of loan portfolio secured by property in Texas (in hundredths)
36.00% 
30.00% 
Percentage of loan portfolio secured by property in Oklahoma (in hundredths)
26.00% 
32.00% 
Residential Portfolio Segment [Member]
 
 
Loan receivables disclosure [Abstract]
 
 
Loans receivables with fixed rate of interest
992,556,000 
851,048,000 
Loans receivables with variable rate of interest
948,138,000 
939,774,000 
Loan receivable non-accrual
29,767,000 
37,426,000 
Total
1,970,461,000 
1,828,248,000 
Loans receivable, other information [Abstract]
 
 
Balance of loans with balances less than $10 million
1,970,461,000 
1,828,248,000 
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)
3Y 
 
Maximum period for fixed rate on variable rate jumbo loans (in years)
10Y 
 
Amount of loans guaranteed by US government and previously sold into GNMA mortgage pools
185,000,000 
72,000,000 
Consumer Portfolio Segment [Member]
 
 
Loan receivables disclosure [Abstract]
 
 
Loans receivables with fixed rate of interest
241,955,000 
369,364,000 
Loans receivables with variable rate of interest
202,449,000 
229,511,000 
Loan receivable non-accrual
3,515,000 
4,567,000 
Total
447,919,000 
603,442,000 
Loans receivable, other information [Abstract]
 
 
Balance of loans with balances less than $10 million
$ 447,919,000 
$ 603,442,000 
Loans and Allowances for Credit Losses Part 2 (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Recorded investment [Abstract]
 
 
 
Collectively measured for impairment, recorded investment
$ 11,093,254 
$ 10,440,533 
 
Individually measured for impairment, recorded investment
176,489 
202,503 
 
Total
11,269,743 
10,643,036 
 
Related allowance [Abstract]
 
 
 
Collectively measured for impairment, related allowance
201,355 
259,103 
 
Individually measured for impairment, related allowance
5,776 
7,132 
 
Total measured for impairment, related allowance
253,481 
292,971 
292,095 
Allowance for loan losses [Roll Forward]
 
 
 
Beginning balance
292,971 
292,095 
273,236 
Provision for (reduction of) allowance for loan losses
(1,040)
105,256 
233,236 
Loans charged off
(56,800)
(123,988)
(148,499)
Recoveries
18,350 
19,608 
10,680 
Ending balance
253,481 
292,971 
292,095 
Allowance for off-balance sheet credit losses [Abstract]
 
 
 
Beginning balance
14,271 
14,388 
15,166 
Provision for (reduction of) off-balance sheet credit losses
(5,010)
(117)
(778)
Ending balance
9,261 
14,271 
14,388 
Combined provision for (reduction of) allowances for credit losses
(6,050)
105,139 
195,900 
Commercial Portfolio Segment [Member]
 
 
 
Recorded investment [Abstract]
 
 
 
Total
6,571,454 
5,933,996 
 
Related allowance [Abstract]
 
 
 
Total measured for impairment, related allowance
83,443 
 
 
Allowance for loan losses [Roll Forward]
 
 
 
Beginning balance
104,631 
 
 
Provision for (reduction of) allowance for loan losses
(13,830)
 
 
Loans charged off
(14,836)
 
 
Recoveries
7,478 
 
 
Ending balance
83,443 
 
 
Allowance for off-balance sheet credit losses [Abstract]
 
 
 
Beginning balance
13,456 
 
 
Provision for (reduction of) off-balance sheet credit losses
(5,550)
 
 
Ending balance
7,906 
 
 
Combined provision for (reduction of) allowances for credit losses
(19,380)
 
 
Commercial Real Estate Portfolio Segment [Member]
 
 
 
Recorded investment [Abstract]
 
 
 
Total
2,279,909 
2,277,350 
 
Related allowance [Abstract]
 
 
 
Total measured for impairment, related allowance
67,034 
 
 
Allowance for loan losses [Roll Forward]
 
 
 
Beginning balance
98,709 
 
 
Provision for (reduction of) allowance for loan losses
(18,482)
 
 
Loans charged off
(15,973)
 
 
Recoveries
2,780 
 
 
Ending balance
67,034 
 
 
Allowance for off-balance sheet credit losses [Abstract]
 
 
 
Beginning balance
443 
 
 
Provision for (reduction of) off-balance sheet credit losses
807 
 
 
Ending balance
1,250 
 
 
Combined provision for (reduction of) allowances for credit losses
(17,675)
 
 
Residential Portfolio Segment [Member]
 
 
 
Recorded investment [Abstract]
 
 
 
Total
1,970,461 
1,828,248 
 
Related allowance [Abstract]
 
 
 
Total measured for impairment, related allowance
39,207 
 
 
Allowance for loan losses [Roll Forward]
 
 
 
Beginning balance
50,281 
 
 
Provision for (reduction of) allowance for loan losses
699 
 
 
Loans charged off
(14,107)
 
 
Recoveries
2,334 
 
 
Ending balance
39,207 
 
 
Allowance for off-balance sheet credit losses [Abstract]
 
 
 
Beginning balance
131 
 
 
Provision for (reduction of) off-balance sheet credit losses
(40)
 
 
Ending balance
91 
 
 
Combined provision for (reduction of) allowances for credit losses
659 
 
 
Consumer Portfolio Segment [Member]
 
 
 
Recorded investment [Abstract]
 
 
 
Total
447,919 
603,442 
 
Related allowance [Abstract]
 
 
 
Total measured for impairment, related allowance
17,447 
 
 
Allowance for loan losses [Roll Forward]
 
 
 
Beginning balance
12,614 
 
 
Provision for (reduction of) allowance for loan losses
10,959 
 
 
Loans charged off
(11,884)
 
 
Recoveries
5,758 
 
 
Ending balance
17,447 
 
 
Allowance for off-balance sheet credit losses [Abstract]
 
 
 
Beginning balance
241 
 
 
Provision for (reduction of) off-balance sheet credit losses
(227)
 
 
Ending balance
14 
 
 
Combined provision for (reduction of) allowances for credit losses
10,732 
 
 
Commercial Portfolio Segment [Member]
 
 
 
Recorded investment [Abstract]
 
 
 
Collectively measured for impairment, recorded investment
6,502,696 
5,895,674 
 
Individually measured for impairment, recorded investment
68,759 
38,322 
 
Total
6,571,455 
5,933,996 
 
Related allowance [Abstract]
 
 
 
Collectively measured for impairment, related allowance
81,907 
102,565 
 
Individually measured for impairment, related allowance
1,536 
2,066 
 
Total measured for impairment, related allowance
83,443 
104,631 
 
Allowance for loan losses [Roll Forward]
 
 
 
Ending balance
83,443 
104,631 
 
Commercial Real Estate Portfolio Segment [Member]
 
 
 
Recorded investment [Abstract]
 
 
 
Collectively measured for impairment, recorded investment
2,180,716 
2,126,984 
 
Individually measured for impairment, recorded investment
99,193 
150,366 
 
Total
2,279,909 
2,277,350 
 
Related allowance [Abstract]
 
 
 
Collectively measured for impairment, related allowance
63,092 
94,502 
 
Individually measured for impairment, related allowance
3,942 
4,207 
 
Total measured for impairment, related allowance
67,034 
98,709 
 
Allowance for loan losses [Roll Forward]
 
 
 
Ending balance
67,034 
98,709 
 
Residential Portfolio Segment [Member]
 
 
 
Recorded investment [Abstract]
 
 
 
Collectively measured for impairment, recorded investment
1,963,020 
1,816,184 
 
Individually measured for impairment, recorded investment
7,441 
12,064 
 
Total
1,970,461 
1,828,248 
 
Related allowance [Abstract]
 
 
 
Collectively measured for impairment, related allowance
38,909 
49,500 
 
Individually measured for impairment, related allowance
298 
781 
 
Total measured for impairment, related allowance
39,207 
50,281 
 
Allowance for loan losses [Roll Forward]
 
 
 
Ending balance
39,207 
50,281 
 
Consumer Portfolio Segment [Member]
 
 
 
Recorded investment [Abstract]
 
 
 
Collectively measured for impairment, recorded investment
446,822 
601,691 
 
Individually measured for impairment, recorded investment
1,096 
1,751 
 
Total
447,918 
603,442 
 
Related allowance [Abstract]
 
 
 
Collectively measured for impairment, related allowance
17,447 
12,536 
 
Individually measured for impairment, related allowance
0 
78 
 
Total measured for impairment, related allowance
17,447 
12,614 
 
Allowance for loan losses [Roll Forward]
 
 
 
Ending balance
17,447 
12,614 
 
Segment Allocations [Member]
 
 
 
Recorded investment [Abstract]
 
 
 
Collectively measured for impairment, recorded investment
11,093,254 
10,440,533 
 
Individually measured for impairment, recorded investment
176,489 
202,503 
 
Total
11,269,743 
10,643,036 
 
Related allowance [Abstract]
 
 
 
Collectively measured for impairment, related allowance
201,355 
259,103 
 
Individually measured for impairment, related allowance
5,776 
7,132 
 
Total measured for impairment, related allowance
207,131 
266,235 
 
Allowance for loan losses [Roll Forward]
 
 
 
Ending balance
207,131 
266,235 
 
Unallocated Financing Receivables [Member]
 
 
 
Related allowance [Abstract]
 
 
 
Total measured for impairment, related allowance
46,350 
 
 
Allowance for loan losses [Roll Forward]
 
 
 
Beginning balance
26,736 
 
 
Provision for (reduction of) allowance for loan losses
19,614 
 
 
Loans charged off
0 
 
 
Recoveries
0 
 
 
Ending balance
46,350 
 
 
Allowance for off-balance sheet credit losses [Abstract]
 
 
 
Beginning balance
0 
 
 
Provision for (reduction of) off-balance sheet credit losses
0 
 
 
Ending balance
0 
 
 
Combined provision for (reduction of) allowances for credit losses
$ 19,614 
 
 
Loans and Allowances for Credit Losses Part 3 (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
$ 9,363,641 
$ 8,889,752 
 
 
Financing Receivable Non - Graded
1,906,102 
1,753,284 
 
 
Total
11,269,743 
10,643,036 
 
 
Related Allowance [Abstract]
 
 
 
 
Allowance For Financing Receivable Internally Graded
160,086 
211,205 
 
 
Allowance For Financing Receivable Non- Graded
47,045 
55,030 
 
 
Allowance For Financing Receivable Total
253,481 
292,971 
292,095 
273,236 
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
9,026,605 
8,511,297 
 
 
Financing Receivable Non - Graded
1,881,305 
1,724,973 
 
 
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
160,547 
175,952 
 
 
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
176,489 
202,503 
 
 
Financing Receivable Non - Graded
24,797 
28,311 
 
 
Commercial Loan [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
6,552,986 
5,914,178 
 
 
Financing Receivable Non - Graded
18,468 
19,818 
 
 
Total
6,571,454 
5,933,996 
 
 
Related Allowance [Abstract]
 
 
 
 
Allowance For Financing Receivable Internally Graded
82,263 
102,259 
 
 
Allowance For Financing Receivable Non- Graded
1,180 
2,372 
 
 
Allowance For Financing Receivable Total
83,443 
104,631 
 
 
Commercial Loan [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
6,410,746 
5,783,471 
 
 
Financing Receivable Non - Graded
18,416 
19,685 
 
 
Commercial Loan [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
73,481 
92,385 
 
 
Commercial Loan [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
68,759 
38,322 
 
 
Financing Receivable Non - Graded
52 
133 
 
 
Commercial Loan [Member] |
Commercial Energy Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
2,015,619 
1,711,409 
 
 
Commercial Loan [Member] |
Commercial Energy Financing Receivable [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
2,013,866 
1,704,401 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Loan [Member] |
Commercial Energy Financing Receivable [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
1,417 
6,543 
 
 
Commercial Loan [Member] |
Commercial Energy Financing Receivable [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
336 
465 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Loan [Member] |
Commercial Services Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
1,745,189 
1,580,921 
 
 
Commercial Loan [Member] |
Commercial Services Financing Receivable [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
1,696,883 
1,531,239 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Loan [Member] |
Commercial Services Financing Receivable [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
31,338 
30,420 
 
 
Commercial Loan [Member] |
Commercial Services Financing Receivable [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
16,968 
19,262 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Loan [Member] |
Commercial Wholesale Retail Financing Receivables [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
962,984 
1,010,246 
 
 
Commercial Loan [Member] |
Commercial Wholesale Retail Financing Receivables [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
907,648 
956,397 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Loan [Member] |
Commercial Wholesale Retail Financing Receivables [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
34,156 
45,363 
 
 
Commercial Loan [Member] |
Commercial Wholesale Retail Financing Receivables [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
21,180 
8,486 
 
 
Commercial Loan [Member] |
Commercial Manufacturing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Total
350,834 
325,191 
 
 
Commercial Loan [Member] |
Commercial Manufacturing Financing Receivable [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
325,393 
319,075 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Loan [Member] |
Commercial Manufacturing Financing Receivable [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
2,390 
4,000 
 
 
Commercial Loan [Member] |
Commercial Manufacturing Financing Receivable [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
23,051 
2,116 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Total
350,834 
325,191 
 
 
Commercial Loan [Member] |
Commercial Healthcare Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
976,481 
809,625 
 
 
Commercial Loan [Member] |
Commercial Healthcare Financing Receivable [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
967,581 
801,525 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Loan [Member] |
Commercial Healthcare Financing Receivable [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
3,414 
4,566 
 
 
Commercial Loan [Member] |
Commercial Healthcare Financing Receivable [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
5,486 
3,534 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Loan [Member] |
Commercial Integrated Food Services Financing Receivables [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
208,738 
204,283 
 
 
Commercial Loan [Member] |
Commercial Integrated Food Services Financing Receivables [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
207,982 
202,885 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Loan [Member] |
Commercial Integrated Food Services Financing Receivables [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
756 
1,385 
 
 
Commercial Loan [Member] |
Commercial Integrated Food Services Financing Receivables [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
0 
13 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Loan [Member] |
Commercial Other Commercial and Industrial [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
311,609 
292,321 
 
 
Commercial Loan [Member] |
Commercial Other Commercial and Industrial [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
291,393 
267,949 
 
 
Financing Receivable Non - Graded
18,416 
19,685 
 
 
Commercial Loan [Member] |
Commercial Other Commercial and Industrial [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
10 
108 
 
 
Commercial Loan [Member] |
Commercial Other Commercial and Industrial [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
1,738 
4,446 
 
 
Financing Receivable Non - Graded
52 
 
 
 
Commercial Loan [Member] |
Internally Assigned Grade [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
73,481 
 
 
 
Commercial Real Estate [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
2,279,909 
2,277,350 
 
 
Total
2,279,909 
2,277,350 
 
 
Related Allowance [Abstract]
 
 
 
 
Allowance For Financing Receivable Internally Graded
67,034 
98,709 
 
 
Allowance For Financing Receivable Non- Graded
0 
0 
 
 
Allowance For Financing Receivable Total
67,034 
98,709 
 
 
Commercial Real Estate [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
2,113,478 
2,067,176 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Real Estate [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
67,238 
59,808 
 
 
Commercial Real Estate [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
99,193 
150,366 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Construction Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
327,480 
447,864 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Construction Financing Receivable [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
238,362 
326,769 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Construction Financing Receivable [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
27,244 
21,516 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Construction Financing Receivable [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
61,874 
99,579 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Retail Financing Receivables [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
509,743 
405,540 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Retail Financing Receivables [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
499,636 
395,094 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Retail Financing Receivables [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
3,244 
5,468 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Retail Financing Receivables [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
6,863 
4,978 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Office Financing Receivables [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
406,508 
457,450 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Office Financing Receivables [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
382,503 
420,899 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Office Financing Receivables [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
12,548 
16,897 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Office Financing Receivables [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
11,457 
19,654 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Multifamily Financing Receivables [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
368,519 
369,242 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Multifamily Financing Receivables [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
356,927 
355,733 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Multifamily Financing Receivables [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
8,079 
6,784 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Multifamily Financing Receivables [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
3,513 
6,725 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Industrial [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
277,733 
182,093 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Industrial [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
277,453 
177,712 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Industrial [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
280 
294 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Industrial [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
0 
4,087 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Other Real Estate Loans Financing Receivables [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
389,926 
415,161 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Other Real Estate Loans Financing Receivables [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
358,597 
390,969 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Other Real Estate Loans Financing Receivables [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
15,843 
8,849 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Other Real Estate Loans Financing Receivables [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
15,486 
15,343 
 
 
Financing Receivable Non - Graded
0 
 
 
 
Residential Mortgage [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
314,475 
451,874 
 
 
Financing Receivable Non - Graded
1,655,986 
1,376,374 
 
 
Total
1,970,461 
1,828,248 
 
 
Related Allowance [Abstract]
 
 
 
 
Allowance For Financing Receivable Internally Graded
8,262 
8,356 
 
 
Allowance For Financing Receivable Non- Graded
30,945 
41,925 
 
 
Allowance For Financing Receivable Total
39,207 
50,281 
 
 
Residential Mortgage [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
291,155 
420,407 
 
 
Financing Receivable Non - Graded
1,633,660 
1,351,012 
 
 
Residential Mortgage [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
15,879 
19,403 
 
 
Residential Mortgage [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
7,441 
12,064 
 
 
Financing Receivable Non - Graded
22,326 
25,362 
 
 
Residential Mortgage [Member] |
Residential Mortgage Permanent Mortgage Financing Receivables [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
1,150,321 
1,274,944 
 
 
Residential Mortgage [Member] |
Residential Mortgage Permanent Mortgage Financing Receivables [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
291,155 
420,407 
 
 
Financing Receivable Non - Graded
817,921 
803,023 
 
 
Residential Mortgage [Member] |
Residential Mortgage Permanent Mortgage Financing Receivables [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
15,879 
19,403 
 
 
Residential Mortgage [Member] |
Residential Mortgage Permanent Mortgage Financing Receivables [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
7,441 
12,064 
 
 
Financing Receivable Non - Graded
17,925 
20,047 
 
 
Residential Mortgage [Member] |
Home Equity [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
635,167 
553,304 
 
 
Residential Mortgage [Member] |
Home Equity [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
0 
0 
 
 
Financing Receivable Non - Graded
630,766 
547,989 
 
 
Residential Mortgage [Member] |
Home Equity [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
0 
0 
 
 
Residential Mortgage [Member] |
Home Equity [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
0 
0 
 
 
Financing Receivable Non - Graded
4,401 
5,315 
 
 
Residential Mortgage [Member] |
Residential Mortgage Permanent Mortgage Us Government Agency Guaranteed Financing Receivables [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
184,973 
72,385 
 
 
Residential Mortgage [Member] |
Residential Mortgage Permanent Mortgage Us Government Agency Guaranteed Financing Receivables [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
0 
0 
 
 
Financing Receivable Non - Graded
184,973 
72,385 
 
 
Residential Mortgage [Member] |
Residential Mortgage Permanent Mortgage Us Government Agency Guaranteed Financing Receivables [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
0 
0 
 
 
Residential Mortgage [Member] |
Residential Mortgage Permanent Mortgage Us Government Agency Guaranteed Financing Receivables [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
0 
0 
 
 
Financing Receivable Non - Graded
0 
0 
 
 
Consumer Loan [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
216,271 
246,350 
 
 
Financing Receivable Non - Graded
231,648 
357,092 
 
 
Total
447,919 
603,442 
 
 
Related Allowance [Abstract]
 
 
 
 
Allowance For Financing Receivable Internally Graded
2,527 
1,881 
 
 
Allowance For Financing Receivable Non- Graded
14,920 
10,733 
 
 
Allowance For Financing Receivable Total
17,447 
12,614 
 
 
Consumer Loan [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
211,226 
240,243 
 
 
Financing Receivable Non - Graded
229,229 
354,276 
 
 
Consumer Loan [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
3,949 
4,356 
 
 
Consumer Loan [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
1,096 
1,751 
 
 
Financing Receivable Non - Graded
2,419 
2,816 
 
 
Consumer Loan [Member] |
Indirect Automobile [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
105,149 
239,576 
 
 
Consumer Loan [Member] |
Indirect Automobile [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
0 
 
 
 
Financing Receivable Non - Graded
102,955 
237,050 
 
 
Consumer Loan [Member] |
Indirect Automobile [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
0 
 
 
 
Consumer Loan [Member] |
Indirect Automobile [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
0 
 
 
 
Financing Receivable Non - Graded
2,194 
2,526 
 
 
Consumer Loan [Member] |
Consumer Other Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Total
342,770 
363,866 
 
 
Consumer Loan [Member] |
Consumer Other Financing Receivable [Member] |
Performing Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
211,226 
240,243 
 
 
Financing Receivable Non - Graded
126,274 
117,226 
 
 
Consumer Loan [Member] |
Consumer Other Financing Receivable [Member] |
Potential Problem Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
3,949 
4,356 
 
 
Consumer Loan [Member] |
Consumer Other Financing Receivable [Member] |
Nonaccrual Financing Receivable [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
1,096 
1,751 
 
 
Financing Receivable Non - Graded
225 
290 
 
 
Allocated Class of Receivables [Member]
 
 
 
 
Recorded Investment [Abstract]
 
 
 
 
Financing Receivable Internally Graded
9,363,641 
8,889,752 
 
 
Financing Receivable Non - Graded
1,906,102 
1,753,284 
 
 
Total
11,269,743 
10,643,036 
 
 
Related Allowance [Abstract]
 
 
 
 
Allowance For Financing Receivable Internally Graded
160,086 
211,205 
 
 
Allowance For Financing Receivable Non- Graded
47,045 
55,030 
 
 
Allowance For Financing Receivable Total
207,131 
266,235 
 
 
Unallocated Financing Receivables [Member]
 
 
 
 
Related Allowance [Abstract]
 
 
 
 
Allowance For Financing Receivable Total
$ 46,350 
$ 26,736 
 
 
Loans and Allowances for Credit Losses Part 4 (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
$ 245,856 
$ 301,032 
 
Recorded investment, total
176,489 
202,503 
316,666 
Recorded investment, with no allowance
154,595 
169,005 
112,590 
Recorded investment, with allowance
21,894 
33,498 
204,076 
Recorded investment, related allowance
5,776 
7,132 
36,168 
Recorded investment, average recorded investment
189,501 
262,368 
327,935 
Recorded investment, interest income recognized
0 
 
 
Consumer Loan [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
1,727 
1,909 
 
Recorded investment, total
1,096 
1,751 
 
Recorded investment, with no allowance
1,096 
1,506 
 
Recorded investment, with allowance
0 
245 
 
Recorded investment, related allowance
0 
78 
 
Recorded investment, average recorded investment
1,424 
 
 
Recorded investment, interest income recognized
0 
 
 
Consumer Loan [Member] |
Consumer Loans Auto Financing Receivable [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
0 
 
 
Recorded investment, total
0 
 
 
Recorded investment, with no allowance
0 
 
 
Recorded investment, with allowance
0 
 
 
Recorded investment, related allowance
0 
 
 
Recorded investment, average recorded investment
0 
 
 
Recorded investment, interest income recognized
0 
 
 
Consumer Loan [Member] |
Consumer Other Financing Receivable [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
1,727 
1,909 
 
Recorded investment, total
1,096 
1,751 
 
Recorded investment, with no allowance
1,096 
1,506 
 
Recorded investment, with allowance
0 
245 
 
Recorded investment, related allowance
0 
78 
 
Recorded investment, average recorded investment
1,424 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Loan [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
93,932 
67,546 
 
Recorded investment, total
68,759 
38,322 
 
Recorded investment, with no allowance
66,439 
33,269 
 
Recorded investment, with allowance
2,320 
5,053 
 
Recorded investment, related allowance
1,536 
2,066 
 
Recorded investment, average recorded investment
53,542 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Loan [Member] |
Commercial Energy Financing Receivable [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
336 
559 
 
Recorded investment, total
336 
465 
 
Recorded investment, with no allowance
336 
404 
 
Recorded investment, with allowance
0 
61 
 
Recorded investment, related allowance
0 
60 
 
Recorded investment, average recorded investment
401 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Loan [Member] |
Commercial Services Financing Receivable [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
26,916 
28,579 
 
Recorded investment, total
16,968 
19,262 
 
Recorded investment, with no allowance
16,200 
15,985 
 
Recorded investment, with allowance
768 
3,277 
 
Recorded investment, related allowance
360 
1,227 
 
Recorded investment, average recorded investment
18,115 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Loan [Member] |
Commercial Wholesale Retail Financing Receivables [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
24,432 
14,717 
 
Recorded investment, total
21,180 
8,486 
 
Recorded investment, with no allowance
19,702 
7,562 
 
Recorded investment, with allowance
1,478 
924 
 
Recorded investment, related allowance
1,102 
684 
 
Recorded investment, average recorded investment
14,833 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Loan [Member] |
Commercial Manufacturing Financing Receivable [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
26,186 
5,811 
 
Recorded investment, total
23,051 
2,116 
 
Recorded investment, with no allowance
23,051 
1,300 
 
Recorded investment, with allowance
0 
816 
 
Recorded investment, related allowance
0 
0 
 
Recorded investment, average recorded investment
12,584 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Loan [Member] |
Commercial Healthcare Financing Receivable [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
6,825 
4,701 
 
Recorded investment, total
5,486 
3,534 
 
Recorded investment, with no allowance
5,412 
564 
 
Recorded investment, with allowance
74 
2,970 
 
Recorded investment, related allowance
74 
95 
 
Recorded investment, average recorded investment
4,510 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Loan [Member] |
Commercial Integrated Food Services Financing Receivables [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
0 
172 
 
Recorded investment, total
0 
13 
 
Recorded investment, with no allowance
0 
13 
 
Recorded investment, with allowance
0 
0 
 
Recorded investment, related allowance
0 
0 
 
Recorded investment, average recorded investment
7 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Loan [Member] |
Commercial Other Commercial and Industrial [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
9,237 
13,007 
 
Recorded investment, total
1,738 
4,446 
 
Recorded investment, with no allowance
1,738 
4,446 
 
Recorded investment, with allowance
0 
0 
 
Recorded investment, related allowance
0 
0 
 
Recorded investment, average recorded investment
3,092 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Real Estate [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
141,500 
216,319 
 
Recorded investment, total
99,193 
150,366 
 
Recorded investment, with no allowance
82,080 
55,858 
 
Recorded investment, with allowance
17,113 
94,508 
 
Recorded investment, related allowance
3,942 
4,207 
 
Recorded investment, average recorded investment
124,782 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Construction Financing Receivable [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
98,053 
138,922 
 
Recorded investment, total
61,874 
99,579 
 
Recorded investment, with no allowance
56,740 
37,578 
 
Recorded investment, with allowance
5,134 
62,001 
 
Recorded investment, related allowance
1,777 
2,428 
 
Recorded investment, average recorded investment
80,727 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Retail Financing Receivables [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
8,645 
6,111 
 
Recorded investment, total
6,863 
4,978 
 
Recorded investment, with no allowance
4,373 
838 
 
Recorded investment, with allowance
2,490 
4,140 
 
Recorded investment, related allowance
1,062 
514 
 
Recorded investment, average recorded investment
5,921 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Office Financing Receivables [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
14,588 
25,702 
 
Recorded investment, total
11,457 
19,654 
 
Recorded investment, with no allowance
9,567 
10,221 
 
Recorded investment, with allowance
1,890 
9,433 
 
Recorded investment, related allowance
291 
106 
 
Recorded investment, average recorded investment
15,556 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Multifamily Financing Receivables [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
3,512 
24,368 
 
Recorded investment, total
3,513 
6,725 
 
Recorded investment, with no allowance
3,513 
6,129 
 
Recorded investment, with allowance
0 
596 
 
Recorded investment, related allowance
0 
115 
 
Recorded investment, average recorded investment
5,119 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Industrial [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
0 
4,087 
 
Recorded investment, total
0 
4,087 
 
Recorded investment, with no allowance
0 
0 
 
Recorded investment, with allowance
0 
4,087 
 
Recorded investment, related allowance
0 
723 
 
Recorded investment, average recorded investment
2,044 
 
 
Recorded investment, interest income recognized
0 
 
 
Commercial Real Estate [Member] |
Commercial Real Estate Other Real Estate Loans Financing Receivables [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
16,702 
17,129 
 
Recorded investment, total
15,486 
15,343 
 
Recorded investment, with no allowance
7,887 
1,092 
 
Recorded investment, with allowance
7,599 
14,251 
 
Recorded investment, related allowance
812 
321 
 
Recorded investment, average recorded investment
15,415 
 
 
Recorded investment, interest income recognized
0 
 
 
Residential Mortgage [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
8,697 
15,258 
 
Recorded investment, total
7,441 
12,064 
 
Recorded investment, with no allowance
4,980 
4,492 
 
Recorded investment, with allowance
2,461 
7,572 
 
Recorded investment, related allowance
298 
781 
 
Recorded investment, average recorded investment
9,753 
 
 
Recorded investment, interest income recognized
0 
 
 
Residential Mortgage [Member] |
Residential Mortgage Permanent Mortgage Financing Receivables [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
8,697 
15,258 
 
Recorded investment, total
7,441 
12,064 
 
Recorded investment, with no allowance
4,980 
4,492 
 
Recorded investment, with allowance
2,461 
7,572 
 
Recorded investment, related allowance
298 
781 
 
Recorded investment, average recorded investment
9,753 
 
 
Recorded investment, interest income recognized
0 
 
 
Residential Mortgage [Member] |
Home Equity [Member]
 
 
 
Impaired receivables [Abstract]
 
 
 
Unpaid principal balance
0 
 
 
Recorded investment, total
0 
 
 
Recorded investment, with no allowance
0 
 
 
Recorded investment, with allowance
0 
 
 
Recorded investment, related allowance
0 
 
 
Recorded investment, average recorded investment
0 
 
 
Recorded investment, interest income recognized
$ 0 
 
 
Loans and Allowances for Credit Losses Part 5 (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Troubled debt restructurings [Abstract]
 
Recorded investment
$ 48,126 
Performing in accordance with modified terms
9,538 
Not performing in accordance with modified terms
38,588 
Specific allowance
2,760 
Amounts charged-off during the period
2,954 
Commercial Loan [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
6,228 
Performing in accordance with modified terms
2,868 
Not performing in accordance with modified terms
3,360 
Specific allowance
24 
Amounts charged-off during the period
301 
Commercial Real Estate [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
37,627 
Performing in accordance with modified terms
5,106 
Not performing in accordance with modified terms
32,521 
Specific allowance
2,454 
Amounts charged-off during the period
2,599 
Consumer Loan [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
168 
Performing in accordance with modified terms
168 
Not performing in accordance with modified terms
0 
Specific allowance
0 
Amounts charged-off during the period
0 
Residential Mortgage [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
4,103 
Performing in accordance with modified terms
1,396 
Not performing in accordance with modified terms
2,707 
Specific allowance
282 
Amounts charged-off during the period
54 
Energy [Member] |
Commercial Loan [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
0 
Performing in accordance with modified terms
0 
Not performing in accordance with modified terms
0 
Specific allowance
0 
Amounts charged-off during the period
0 
Services [Member] |
Commercial Loan [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
3,529 
Performing in accordance with modified terms
1,907 
Not performing in accordance with modified terms
1,622 
Specific allowance
0 
Amounts charged-off during the period
301 
Wholesale/Retail [Member] |
Commercial Loan [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
1,739 
Performing in accordance with modified terms
961 
Not performing in accordance with modified terms
778 
Specific allowance
24 
Amounts charged-off during the period
0 
Manufacturing [Member] |
Commercial Loan [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
0 
Performing in accordance with modified terms
0 
Not performing in accordance with modified terms
0 
Specific allowance
0 
Amounts charged-off during the period
0 
Healthcare [Member] |
Commercial Loan [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
0 
Performing in accordance with modified terms
0 
Not performing in accordance with modified terms
0 
Specific allowance
0 
Amounts charged-off during the period
0 
Integrated Food Services [Member] |
Commercial Loan [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
0 
Performing in accordance with modified terms
0 
Not performing in accordance with modified terms
0 
Specific allowance
0 
Amounts charged-off during the period
0 
Other Commercial and Industrial [Member] |
Commercial Loan [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
960 
Not performing in accordance with modified terms
960 
Specific allowance
0 
Amounts charged-off during the period
0 
Construction and Land Development [Member] |
Commercial Real Estate [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
25,890 
Performing in accordance with modified terms
3,585 
Not performing in accordance with modified terms
22,305 
Specific allowance
1,577 
Amounts charged-off during the period
1,104 
Retail [Member} |
Commercial Real Estate [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
1,070 
Performing in accordance with modified terms
0 
Not performing in accordance with modified terms
1,070 
Specific allowance
0 
Amounts charged-off during the period
882 
Office [Member] |
Commercial Real Estate [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
2,496 
Performing in accordance with modified terms
1,134 
Not performing in accordance with modified terms
1,362 
Specific allowance
215 
Amounts charged-off during the period
527 
Multifamily [Member] |
Commercial Real Estate [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
0 
Performing in accordance with modified terms
0 
Not performing in accordance with modified terms
0 
Specific allowance
0 
Amounts charged-off during the period
0 
Industrial [Member] |
Commercial Real Estate [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
0 
Performing in accordance with modified terms
0 
Not performing in accordance with modified terms
0 
Specific allowance
0 
Amounts charged-off during the period
0 
Other Real Estate Loans [Member] |
Commercial Real Estate [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
8,171 
Performing in accordance with modified terms
387 
Not performing in accordance with modified terms
7,784 
Specific allowance
662 
Amounts charged-off during the period
86 
Indirect Automobile [Member] |
Consumer Loan [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
0 
Performing in accordance with modified terms
0 
Not performing in accordance with modified terms
0 
Specific allowance
0 
Amounts charged-off during the period
0 
Other Consumer [Member] |
Consumer Loan [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
168 
Performing in accordance with modified terms
168 
Not performing in accordance with modified terms
0 
Specific allowance
0 
Amounts charged-off during the period
0 
Permanent Mortgage [Member] |
Residential Mortgage [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
4,103 
Performing in accordance with modified terms
1,396 
Not performing in accordance with modified terms
2,707 
Specific allowance
282 
Amounts charged-off during the period
54 
Residential Mortgage Home Equity [Member] |
Residential Mortgage [Member]
 
Troubled debt restructurings [Abstract]
 
Recorded investment
0 
Performing in accordance with modified terms
0 
Not performing in accordance with modified terms
0 
Specific allowance
0 
Amounts charged-off during the period
$ 0 
Loans and Allowances for Credit Losses Part 6 (Details) (USD $)
Dec. 31, 2011
Dec. 31, 2010
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
$ 10,846,838,000 
$ 10,347,951,000 
Past due 30 to 89 days
63,822,000 
59,110,000 
Past due 90 days or more
157,797,000 
65,558,000 
Nonaccrual
201,286,000 
230,814,000 
Total
11,269,743,000 
10,643,036,000 
Permanent Mortgage [Member] |
Residential Mortgage [Member]
 
 
Renegotiated residential mortgage loans [Abstract]
 
 
Loans currently performing
13,000,000 
 
30 to 89 days past
5,800,000 
 
Past due 90 days
14,000,000 
 
Loans guaranteed by government agencies
29,000,000 
 
Total portfolio of renegotiated loans
33,000,000 
 
Commercial Loan [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
6,481,831,000 
5,884,790,000 
Past due 30 to 89 days
19,125,000 
4,443,000 
Past due 90 days or more
1,687,000 
6,308,000 
Nonaccrual
68,811,000 
38,455,000 
Total
6,571,454,000 
5,933,996,000 
Commercial Loan [Member] |
Commercial Energy Financing Receivable [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
2,013,770,000 
1,707,466,000 
Past due 30 to 89 days
1,065,000 
507,000 
Past due 90 days or more
448,000 
2,971,000 
Nonaccrual
336,000 
465,000 
Total
2,015,619,000 
1,711,409,000 
Commercial Loan [Member] |
Commercial Services Financing Receivable [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
1,713,426,000 
1,558,120,000 
Past due 30 to 89 days
13,608,000 
3,196,000 
Past due 90 days or more
1,187,000 
343,000 
Nonaccrual
16,968,000 
19,262,000 
Total
1,745,189,000 
1,580,921,000 
Commercial Loan [Member] |
Commercial Wholesale Retail Financing Receivables [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
941,334,000 
1,001,422,000 
Past due 30 to 89 days
470,000 
315,000 
Past due 90 days or more
0 
23,000 
Nonaccrual
21,180,000 
8,486,000 
Total
962,984,000 
1,010,246,000 
Commercial Loan [Member] |
Commercial Manufacturing Financing Receivable [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
327,129,000 
321,102,000 
Past due 30 to 89 days
654,000 
168,000 
Past due 90 days or more
0 
1,805,000 
Nonaccrual
23,051,000 
2,116,000 
Total
350,834,000 
325,191,000 
Commercial Loan [Member] |
Commercial Healthcare Financing Receivable [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
969,586,000 
805,124,000 
Past due 30 to 89 days
1,362,000 
75,000 
Past due 90 days or more
47,000 
892,000 
Nonaccrual
5,486,000 
3,534,000 
Total
976,481,000 
809,625,000 
Commercial Loan [Member] |
Commercial Integrated Food Services Financing Receivables [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
208,733,000 
204,199,000 
Past due 30 to 89 days
0 
71,000 
Past due 90 days or more
5,000 
 
Nonaccrual
0 
13,000 
Total
208,738,000 
204,283,000 
Commercial Loan [Member] |
Commercial Other Commercial and Industrial [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
307,853,000 
287,357,000 
Past due 30 to 89 days
1,966,000 
111,000 
Past due 90 days or more
0 
274,000 
Nonaccrual
1,790,000 
4,579,000 
Total
311,609,000 
292,321,000 
Commercial Real Estate [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
2,175,207,000 
2,111,454,000 
Past due 30 to 89 days
5,372,000 
14,234,000 
Past due 90 days or more
137,000 
1,296,000 
Nonaccrual
99,193,000 
150,366,000 
Total
2,279,909,000 
2,277,350,000 
Commercial Real Estate [Member] |
Commercial Real Estate Construction Financing Receivable [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
264,327,000 
344,016,000 
Past due 30 to 89 days
1,279,000 
3,170,000 
Past due 90 days or more
0 
1,099,000 
Nonaccrual
61,874,000 
99,579,000 
Total
327,480,000 
447,864,000 
Commercial Real Estate [Member] |
Commercial Real Estate Retail Financing Receivables [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
502,508,000 
394,445,000 
Past due 30 to 89 days
372,000 
6,117,000 
Past due 90 days or more
0 
 
Nonaccrual
6,863,000 
4,978,000 
Total
509,743,000 
405,540,000 
Commercial Real Estate [Member] |
Commercial Real Estate Office Financing Receivables [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
394,812,000 
437,496,000 
Past due 30 to 89 days
239,000 
300,000 
Past due 90 days or more
0 
 
Nonaccrual
11,457,000 
19,654,000 
Total
406,508,000 
457,450,000 
Commercial Real Estate [Member] |
Commercial Real Estate Multifamily Financing Receivables [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
364,968,000 
362,517,000 
Past due 30 to 89 days
38,000 
 
Past due 90 days or more
0 
 
Nonaccrual
3,513,000 
6,725,000 
Total
368,519,000 
369,242,000 
Commercial Real Estate [Member] |
Commercial Real Estate Industrial [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
277,733,000 
177,660,000 
Past due 30 to 89 days
0 
346,000 
Past due 90 days or more
0 
 
Nonaccrual
0 
4,087,000 
Total
277,733,000 
182,093,000 
Commercial Real Estate [Member] |
Commercial Real Estate Other Real Estate Loans Financing Receivables [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
370,859,000 
395,320,000 
Past due 30 to 89 days
3,444,000 
4,301,000 
Past due 90 days or more
137,000 
197,000 
Nonaccrual
15,486,000 
15,343,000 
Total
389,926,000 
415,161,000 
Residential Mortgage [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
1,752,292,000 
1,705,106,000 
Past due 30 to 89 days
32,458,000 
28,124,000 
Past due 90 days or more
155,944,000 
57,592,000 
Nonaccrual
29,767,000 
37,426,000 
Total
1,970,461,000 
1,828,248,000 
Residential Mortgage [Member] |
Residential Mortgage Permanent Mortgage Financing Receivables [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
1,107,095,000 
1,148,271,000 
Past due 30 to 89 days
17,259,000 
22,177,000 
Past due 90 days or more
601,000 
0 
Nonaccrual
25,366,000 
32,111,000 
Total
1,150,321,000 
1,274,944,000 
Residential Mortgage [Member] |
Home Equity [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
627,688,000 
546,384,000 
Past due 30 to 89 days
3,036,000 
1,605,000 
Past due 90 days or more
42,000 
 
Nonaccrual
4,401,000 
5,315,000 
Total
635,167,000 
553,304,000 
Residential Mortgage [Member] |
Residential Mortgage Permanent Mortgage Us Government Agency Guaranteed Financing Receivables [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
17,509,000 
10,451,000 
Past due 30 to 89 days
12,163,000 
4,342,000 
Past due 90 days or more
155,301,000 
57,592,000 
Nonaccrual
0 
0 
Total
184,973,000 
72,385,000 
Consumer Loan [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
437,508,000 
586,204,000 
Past due 30 to 89 days
6,867,000 
12,309,000 
Past due 90 days or more
29,000 
362,000 
Nonaccrual
3,515,000 
4,567,000 
Total
447,919,000 
603,442,000 
Consumer Loan [Member] |
Consumer Loans Auto Financing Receivable [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
98,345,000 
225,601,000 
Past due 30 to 89 days
4,581,000 
11,382,000 
Past due 90 days or more
29,000 
67,000 
Nonaccrual
2,194,000 
2,526,000 
Total
105,149,000 
239,576,000 
Consumer Loan [Member] |
Consumer Other Financing Receivable [Member]
 
 
Financing receivable, recorded investment, aging [Abstract]
 
 
Current
339,163,000 
360,603,000 
Past due 30 to 89 days
2,286,000 
927,000 
Past due 90 days or more
0 
295,000 
Nonaccrual
1,321,000 
2,041,000 
Total
$ 342,770,000 
$ 363,866,000 
Mortgage Banking Activities, Components Of Loans Held For Sale (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Mortgage Banking Activities [Abstract]
 
 
 
General number of days outstanding for residential mortgage commitments, minimum (in days)
60D 
 
 
General number of days outstanding for residential mortgage commitments, maximum (in days)
90D 
 
 
General number of days for delivery of loans, for which the price is set by forward sales contracts, minimum (in days)
60D 
 
 
General number of days for delivery of loans, for which the price is set by forward sales contracts, maximum (in days)
90D 
 
 
Number of days for past due loans (in days)
90D 
90D 
 
Schedule of Residential Mortgage Loans Held For Sale [Line Items]
 
 
 
Components of Residential Mortgages Held For Sale Gross, Fair Value
$ 188,125 
$ 263,413 
 
Mortgage and Marketing Revenue [Abstract]
 
 
 
Total originating and marketing revenue
51,982 
49,438 
44,962 
Servicing revenue
39,661 
38,162 
20,018 
Total mortgage banking revenue
91,643 
87,600 
64,980 
Number of residential mortgage loans serviced
95,841 
96,443 
61,199 
Outstanding principal balance of residential mortgage loans serviced for others
11,300,986 
11,194,582 
6,603,132 
Residential Mortgage Loans Held For Sale Gross [Member]
 
 
 
Schedule of Residential Mortgage Loans Held For Sale [Line Items]
 
 
 
Components of Residential Mortgages Held For Sale Gross, Fair Value
184,816 
254,669 
 
Residential Mortgage Loans Held For Sale Unpaid Principal Balance, Gross
177,319 
253,778 
 
Mortgage and Marketing Revenue [Abstract]
 
 
 
Mortgage Loans Held For Sale, Gain (Loss)
57,418 
45,243 
40,849 
Residential Mortgage Loan Commitments [Member]
 
 
 
Schedule of Residential Mortgage Loans Held For Sale [Line Items]
 
 
 
Components of Residential Mortgages Held For Sale Gross, Fair Value
6,597 
2,251 
 
Residential Mortgage Derivatives Notional Amount
189,770 
138,870 
 
Mortgage and Marketing Revenue [Abstract]
 
 
 
Mortgage Loans Held For Sale, Gain (Loss)
4,345 
1,755 
(1,673)
Forward Sales Contracts[Member]
 
 
 
Schedule of Residential Mortgage Loans Held For Sale [Line Items]
 
 
 
Components of Residential Mortgages Held For Sale Gross, Fair Value
(3,288)
6,493 
 
Residential Mortgage Derivatives Notional Amount
349,447 
396,422 
 
Mortgage and Marketing Revenue [Abstract]
 
 
 
Mortgage Loans Held For Sale, Gain (Loss)
$ (9,781)
$ 2,440 
$ 5,786 
Mortgage Banking Activities, Mortgage Servicing Rights (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Mortgage Banking Activities [Abstract]
 
 
 
Weighted average interest rate (in hundredths)
5.19% 
5.44% 
 
Remaining term (in months)
290 M 
292 M 
 
Servicing Asset at Fair Value, Amount [Roll Forward]
 
 
 
Beginning balance
$ 115,723 
$ 73,824 
$ 42,752 
Additions, net
26,251 
58,924 
39,869 
Change in fair value due to loan runoff
(14,744)
(20,686)
(20,921)
Gain on purchase of mortgage servicing rights
 
11,832 
 
Change in fair value due to market changes
(40,447)
(8,171)
12,124 
Ending balance
86,783 
115,723 
73,824 
Servicing Assets at Fair Value, Assumptions Used to Estimate Fair Value [Abstract]
 
 
 
Discount rate - risk-free rate plus a market premium (in hundredths)
10.34% 
10.36% 
 
Prepayment rate - estimated based upon loan interest rate, original term and loan type, minimum (in hundredths)
10.88% 
6.53% 
 
Prepayment rate - estimated based upon loan interest rate, original term and loan type, maximum (in hundredths)
49.68% 
23.03% 
 
Loan servicing costs - annually per loan based upon loan type, minimum (in dollars per loan)
55 
35 
 
Loan servicing costs - annually per loan based upon loan type, maximum (in dollars per loan)
105 
60 
 
Escrow earnings rate - indexed to rates paid on deposit accounts with comparable average life (in hundredths)
1.21% 
2.21% 
 
Purchased [Member]
 
 
 
Servicing Asset at Fair Value, Amount [Roll Forward]
 
 
 
Beginning balance
37,900 
7,828 
6,353 
Additions, net
0 
31,321 
0 
Change in fair value due to loan runoff
(4,699)
(6,791)
(2,526)
Gain on purchase of mortgage servicing rights
 
11,832 
 
Change in fair value due to market changes
(14,298)
(6,290)
4,001 
Ending balance
18,903 
37,900 
7,828 
Originated [Member]
 
 
 
Servicing Asset at Fair Value, Amount [Roll Forward]
 
 
 
Beginning balance
77,823 
65,996 
36,399 
Additions, net
26,251 
27,603 
39,869 
Change in fair value due to loan runoff
(10,045)
(13,895)
(18,395)
Gain on purchase of mortgage servicing rights
 
0 
 
Change in fair value due to market changes
(26,149)
(1,881)
8,123 
Ending balance
$ 67,880 
$ 77,823 
$ 65,996 
Mortgage Banking Activities, Loan Servicing Portfolio (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
Fair value
$ 86,783 
$ 115,723 
$ 73,824 
$ 42,752 
Outstanding principal of loans serviced
11,300,986 
 
 
 
Weighted average prepayment rate (in hundredths)
23.50% 1
 
 
 
Aging of Loans Serviced [Abstract]
 
 
 
 
Current
10,838,106 
 
 
 
30 to 59 Days
258,761 
 
 
 
60 to 89 Days
68,462 
 
 
 
90 Days or More
135,657 
 
 
 
Total
11,300,986 
 
 
 
FHLMC [Member]
 
 
 
 
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
Outstanding principal of loans serviced
5,384,492 
 
 
 
Aging of Loans Serviced [Abstract]
 
 
 
 
Current
5,254,662 
 
 
 
30 to 59 Days
56,789 
 
 
 
60 to 89 Days
15,965 
 
 
 
90 Days or More
57,076 
 
 
 
Total
5,384,492 
 
 
 
FNMA [Member]
 
 
 
 
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
Outstanding principal of loans serviced
1,627,431 
 
 
 
Aging of Loans Serviced [Abstract]
 
 
 
 
Current
1,564,151 
 
 
 
30 to 59 Days
27,623 
 
 
 
60 to 89 Days
8,786 
 
 
 
90 Days or More
26,871 
 
 
 
Total
1,627,431 
 
 
 
GNMA [Member]
 
 
 
 
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
Outstanding principal of loans serviced
3,832,085 
 
 
 
Aging of Loans Serviced [Abstract]
 
 
 
 
Current
3,593,523 
 
 
 
30 to 59 Days
159,869 
 
 
 
60 to 89 Days
40,185 
 
 
 
90 Days or More
38,508 
 
 
 
Total
3,832,085 
 
 
 
Other Investor Loans [Member]
 
 
 
 
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
Outstanding principal of loans serviced
456,978 
 
 
 
Aging of Loans Serviced [Abstract]
 
 
 
 
Current
425,770 
 
 
 
30 to 59 Days
14,480 
 
 
 
60 to 89 Days
3,526 
 
 
 
90 Days or More
13,202 
 
 
 
Total
456,978 
 
 
 
Interest Rate Range Less than 4.50% [Member]
 
 
 
 
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
Fair value
19,911 
 
 
 
Outstanding principal of loans serviced
2,125,412 
 
 
 
Weighted average prepayment rate (in hundredths)
10.88% 1
 
 
 
Aging of Loans Serviced [Abstract]
 
 
 
 
Total
2,125,412 
 
 
 
Interest Rate Range 4.50% to 5.49% [Member]
 
 
 
 
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
Fair value
50,637 
 
 
 
Outstanding principal of loans serviced
5,227,723 
 
 
 
Weighted average prepayment rate (in hundredths)
14.42% 1
 
 
 
Aging of Loans Serviced [Abstract]
 
 
 
 
Total
5,227,723 
 
 
 
Interest Rate Range 5.50% to 6.49% [Member]
 
 
 
 
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
Fair value
12,736 
 
 
 
Outstanding principal of loans serviced
2,822,476 
 
 
 
Weighted average prepayment rate (in hundredths)
39.40% 1
 
 
 
Aging of Loans Serviced [Abstract]
 
 
 
 
Total
2,822,476 
 
 
 
Interest Rate Range Greater than 6.49% [Member]
 
 
 
 
Stratification of Mortgage Loan Servicing Portfolio [Line Items]
 
 
 
 
Fair value
3,499 
 
 
 
Outstanding principal of loans serviced
1,125,375 
 
 
 
Weighted average prepayment rate (in hundredths)
49.68% 1
 
 
 
Aging of Loans Serviced [Abstract]
 
 
 
 
Total
$ 1,125,375 
 
 
 
Mortgage Banking Activities, Loans Sold With Recourse (Details) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Activity in the allowance for losses on loans sold with recourse [Roll forward]
 
 
 
 
Beginning balance
$ 13,781,000 
$ 16,667,000 
$ 13,781,000 
$ 8,767,000 
Provision for recourse losses
 
8,611,000 
7,895,000 
12,210,000 
Loans charged off, net
 
(6,595,000)
(5,009,000)
(7,196,000)
Ending balance
 
18,683,000 
16,667,000 
13,781,000 
Number of residential mortgage loans purchased for servicing
34,000 
 
 
 
Principal balance of residential mortgage loans purchased for servicing
4,200,000,000 
 
 
 
Payments to acquire mortgage servicing rights (MSR)
32,000,000 
 
 
 
Servicing asset at fair value, additions
43,700,000 
 
 
 
Servicing asset acquired variance between fair value and acquisition price
11,800,000 
 
 
 
Economic hedge threshold for interest rate sensitivity for mortgage servicing rights and securities held (in basis points)
 
50 BPS 
 
 
Dollar increase in fair value, net of economic hedge, of mortgage servicing rights due to 50 basis point increase in mortgage interest rates
 
740,000 
 
 
Dollar decrease in fair value, net of economic hedge, of mortgage servicing rights due to 50 basis point decrease in mortgage interest rates
 
4,800,000 
 
 
Loans Sold Under Repurchase Agreement [Abstract]
 
 
 
 
Carrying amount of residential mortgage loans sold and subject to repurchase agreement
 
259,000,000 
289,000,000 
 
Accrual for off-balance sheet commitments to repurchase loans sold
 
19,000,000 
17,000,000 
 
Percentage of loans sold with recourse and either more than 90 days past due or in bankruptcy or foreclosure (in hundredths)
 
6.00% 
 
 
Principal balance of loans sold with recourse and either 90 days or more past due or in bankruptcy or foreclosure
 
15,000,000 
 
 
Percentage of loans sold with recourse and 30 to 89 days past due (in hundredths)
 
7.00% 
 
 
Principal balance of loans sold with recourse and 30 to 89 days past due
 
18,000,000 
 
 
Number of mortgages purchased under repurchase agreement with government sponsored entities.
 
10 
11 
 
Purchase price of loans purchased under repurchase agreement with government sponsored entities
 
1,000,000 
301,000 
 
Losses incurred on actual repurchased loans from governmental sponsored entities with warranties
 
295,000 
 
 
Principal balance of loans with unresolved deficiency requests
 
37,000,000 
22,000,000 
 
Allowance for credit losses for loan repurchase under representations and warranties
 
2,200,000 
 
 
Unresolved deficiency requests
 
247 
140 
 
Number of mortgages indemnified to government sponsored entities
 
10 
 
 
Indemnified loan balance
 
$ 1,000,000 
 
 
Premises and Equipment (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Property, Plant and Equipment [Line Items]
 
 
 
Premises and equipment
$ 530,622,000 
$ 501,912,000 
 
Accumulated depreciation
267,887,000 
236,447,000 
 
Premises and equipment, net
262,735,000 
265,465,000 
 
Depreciation expense
32,000,000 
33,000,000 
33,000,000 
Land [Member]
 
 
 
Property, Plant and Equipment [Line Items]
 
 
 
Premises and equipment
73,638,000 
72,643,000 
 
Buildings and Improvements [Member]
 
 
 
Property, Plant and Equipment [Line Items]
 
 
 
Premises and equipment
232,440,000 
226,234,000 
 
Software [Member]
 
 
 
Property, Plant and Equipment [Line Items]
 
 
 
Premises and equipment
82,801,000 
69,303,000 
 
Furniture and equipment [Member]
 
 
 
Property, Plant and Equipment [Line Items]
 
 
 
Premises and equipment
$ 141,743,000 
$ 133,732,000 
 
Goodwill and Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2009
Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
 
 
 
Finite-lived intangible assets, net
$ 10,219 
 
$ 13,803 
Finite-Lived Intangible Assets-Future Amortization Expense [Abstract]
 
 
 
2012
2,200 
 
 
2013
1,546 
 
 
2014
766 
 
 
2015
726 
 
 
2016
582 
 
 
Thereafter
4,399 
 
 
Expected net total amortization expense for intangible assets
10,219 
 
 
Goodwill [Line Items]
 
 
 
Goodwill, gross
335,829 
 
335,829 
Accumulated Impairment
(228)
 
(228)
Goodwill
335,601 
 
335,601 
Impairment charge
 
228 
 
Commercial [Member]
 
 
 
Goodwill [Line Items]
 
 
 
Goodwill, gross
266,728 
 
266,728 
Accumulated Impairment
0 
 
0 
Goodwill
266,728 
 
266,728 
Consumer [Member]
 
 
 
Goodwill [Line Items]
 
 
 
Goodwill, gross
39,251 
 
39,251 
Accumulated Impairment
(228)
 
(228)
Goodwill
39,023 
 
39,023 
Wealth Management [Member]
 
 
 
Goodwill [Line Items]
 
 
 
Goodwill, gross
29,850 
 
29,850 
Accumulated Impairment
0 
 
0 
Goodwill
29,850 
 
29,850 
TEXAS [Member]
 
 
 
Goodwill [Line Items]
 
 
 
Goodwill
240,122 
 
240,122 
OKLAHOMA [Member]
 
 
 
Goodwill [Line Items]
 
 
 
Goodwill
8,173 
 
8,173 
COLORADO [Member]
 
 
 
Goodwill [Line Items]
 
 
 
Goodwill
55,611 
 
55,611 
ARIZONA [Member]
 
 
 
Goodwill [Line Items]
 
 
 
Goodwill
16,422 
 
16,422 
NEW MEXICO [Member]
 
 
 
Goodwill [Line Items]
 
 
 
Goodwill
15,273 
 
15,273 
Core Deposits Premiums [Member]
 
 
 
Finite-Lived Intangible Assets [Line Items]
 
 
 
Finite-lived intangible assets, gross
109,417 
 
109,417 
Accumulated amortization
107,023 
 
104,795 
Finite-lived intangible assets, net
2,394 
 
4,622 
Finite-Lived Intangible Assets-Future Amortization Expense [Abstract]
 
 
 
2012
815 
 
 
2013
485 
 
 
2014
432 
 
 
2015
392 
 
 
2016
248 
 
 
Thereafter
22 
 
 
Expected net total amortization expense for intangible assets
2,394 
 
 
Core Deposits Premiums [Member] |
TEXAS [Member]
 
 
 
Finite-Lived Intangible Assets [Line Items]
 
 
 
Finite-lived intangible assets, net
1,817 
 
3,408 
Core Deposits Premiums [Member] |
COLORADO [Member]
 
 
 
Finite-Lived Intangible Assets [Line Items]
 
 
 
Finite-lived intangible assets, net
548 
 
1,058 
Core Deposits Premiums [Member] |
ARIZONA [Member]
 
 
 
Finite-Lived Intangible Assets [Line Items]
 
 
 
Finite-lived intangible assets, net
29 
 
156 
Other Identifiable Intangible Assets [Member]
 
 
 
Finite-Lived Intangible Assets [Line Items]
 
 
 
Finite-lived intangible assets, gross
17,291 
 
17,291 
Accumulated amortization
9,466 
 
8,110 
Finite-lived intangible assets, net
7,825 
 
9,181 
Finite-Lived Intangible Assets-Future Amortization Expense [Abstract]
 
 
 
2012
1,385 
 
 
2013
1,061 
 
 
2014
334 
 
 
2015
334 
 
 
2016
334 
 
 
Thereafter
4,377 
 
 
Expected net total amortization expense for intangible assets
7,825 
 
 
Other Identifiable Intangible Assets [Member] |
Kansas/Missouri [Member]
 
 
 
Finite-Lived Intangible Assets [Line Items]
 
 
 
Finite-lived intangible assets, net
790 
 
790 
Other Identifiable Intangible Assets [Member] |
OKLAHOMA [Member]
 
 
 
Finite-Lived Intangible Assets [Line Items]
 
 
 
Finite-lived intangible assets, net
5,548 
 
6,048 
Other Identifiable Intangible Assets [Member] |
COLORADO [Member]
 
 
 
Finite-Lived Intangible Assets [Line Items]
 
 
 
Finite-lived intangible assets, net
$ 1,487 
 
$ 2,343 
Deposits (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Interest expense on deposits [Abstract]
 
 
 
Transaction deposits
$ 23,415,000 
$ 38,886,000 
$ 51,607,000 
Savings
719,000 
719,000 
614,000 
Time Deposit, Interest Expense [Abstract]
 
 
 
Certificates of deposits under $100,000
26,476,000 
31,210,000 
57,486,000 
Certificates of deposits $100,000 and over
21,175,000 
19,235,000 
37,193,000 
Other time deposits
17,105,000 
16,215,000 
17,462,000 
Total time Deposit - Interest Expense
64,756,000 
66,660,000 
112,141,000 
Total Interest Expense on Deposits
88,890,000 
106,265,000 
164,362,000 
Aggregate Amount of Time Deposits of $100,000 or More [Abstract]
 
 
 
Aggregate amounts of time deposits in denominations of $100,000 or more
2,100,000,000 
2,200,000,000 
 
Time Deposit Maturities [Abstract]
 
 
 
Time deposit maturities-year one
1,800,000,000 
 
 
Time deposit maturities-year two
465,000,000 
 
 
Time deposit maturities-year three
112,000,000 
 
 
Time deposit maturities-year four
249,000,000 
 
 
Time deposit maturities-year five
323,000,000 
 
 
Time deposit maturities-after year five
479,000,000 
 
 
Other Deposits Information [Abstract]
 
 
 
Fixed rate, brokered certificates of deposits
219,000,000 
210,000,000 
 
Weighted-average interest rate paid on fixed rate, brokered certificates of deposits (in hundredths)
3.62% 
3.82% 
 
Interest expense on time deposits reduction by interest rate swaps
1,600,000 
4,000,000 
11,500,000 
Overdrawn transaction deposits reclassified as loan balances
$ 7,500,000 
$ 13,500,000 
 
Other Borrowings (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Mar. 31, 2009
Debt Instrument [Line Items]
 
 
 
 
Balance
$ 2,769,748,000 
$ 3,516,059,000 
$ 5,003,639,000 
 
Rate (in hundredths)
1.07% 
0.98% 
0.72% 
 
Derivative, fixed interest rate received (in hundredths)
 
5.257% 
 
 
Derivative, variable interest rate paid
 
variable rate based on 1-month LIBOR 
 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
Total
2,769,748,000 
3,516,059,000 
5,003,639,000 
 
Letters of credit issued by Federal Home Loan Banks to secure obligations to depositors of public funds.
 
311,000,000 
 
 
Unused credit available pursuant to the FHLB's collateral policies
1,600,000,000 
 
 
 
Basis point margin added to LIBOR to determine interest rate on debt (in basis points)
 
250 
 
 
Debt Instrument, Unused Portion Basis Point Margin (in basis points)
 
5,000.00% 
 
 
Fixed rate of interest on debt (in hundredths)
1.07% 
0.98% 
0.72% 
 
Security Sold/Maturity
 
 
 
 
Amortized Cost
1,583,958,000 
1,489,570,000 
 
 
Market Value
1,628,547,000 
1,538,914,000 
 
 
Repurchase Liability
1,231,426,000 1
1,278,924,000 1
 
 
Average Rate (in hundredths)
0.09% 
0.85% 
 
 
US Agency Securities [Member] |
Overnight [Member]
 
 
 
 
Security Sold/Maturity
 
 
 
 
Amortized Cost
1,583,958,000 1
1,357,440,000 1
 
 
Market Value
1,628,547,000 1
1,399,570,000 1
 
 
Repurchase Liability
1,231,426,000 1
1,108,769,000 1
 
 
Average Rate (in hundredths)
0.09% 1
0.25% 1
 
 
US Agency Securities [Member] |
Short-term [Member]
 
 
 
 
Security Sold/Maturity
 
 
 
 
Amortized Cost
 
132,130,000 
 
 
Market Value
 
139,344,000 
 
 
Repurchase Liability
 
170,155,000 1
 
 
Average Rate (in hundredths)
 
4.72% 
 
 
US Agency Securities [Member] |
Long-term [Member]
 
 
 
 
Security Sold/Maturity
 
 
 
 
Amortized Cost
0 
 
 
 
Market Value
0 
 
 
 
Repurchase Liability
0 1
 
 
 
Average Rate (in hundredths)
0.00% 
 
 
 
Revolving Unsecured Line [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Unsecured revolving line of credit paid from proceeds of subordinated debt
 
(95,000,000)
 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
Borrowing capacity - unsecured revolving credit agreement
 
100,000,000 
 
 
Interest rate description
 
one-month LIBOR plus 250 basis points and is payable quarterly. Additional interest in the form of a facility fee is paid quarterly on the unused portion of the commitment at 50 basis points 
 
 
Subordinated Debentures [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Rate (in hundredths)
 
5.75% 
 
 
Debt Instrument, Basis Spread on Variable Rate (in hundredths)
 
0.69% 
 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
Interest rate description
 
based upon a fixed rate of 5.75 through May 14, 2012 and on a floating rate of three-month LIBOR plus 0.69 thereafter 
 
 
Subordinated debt amount issued
 
250,000,000 
 
 
Subordinated debt maturity date
 
May 15, 2017 
 
 
Fixed rate of interest on debt (in hundredths)
 
5.75% 
 
 
Fixed Rate Subordinated Debt, 10-Year [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Fixed rate subordinated debt-term (in years)
 
10 
 
 
Interest rate on debt (in hundredths)
 
5.56% 
 
 
Notional amount interest rate swap
 
150,000,000 
 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
Interest rate description
 
fixed rate of 5.257 and paid a variable rate based on 1-month LIBOR 
 
 
Subordinated debt amount issued
 
150,000,000 
 
 
Parent Company [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Balance
0 
7,217,000 
7,217,000 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
2012
0 
 
 
 
2013
0 
 
 
 
2014
0 
 
 
 
2015
0 
 
 
 
2016
0 
 
 
 
Thereafter
0 
 
 
 
Total
0 
7,217,000 
7,217,000 
 
Parent Company [Member] |
Revolving Unsecured Line [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Balance
0 
0 
0 
 
Rate (in hundredths)
0.00% 
 
 
 
Maximum Outstanding At Any Month End
0 
0 
50,000,000 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
Total
0 
0 
0 
 
Fixed rate of interest on debt (in hundredths)
0.00% 
 
 
 
Parent Company [Member] |
Trust Preferred Debt [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Balance
0 
7,217,000 
7,217,000 
 
Rate (in hundredths)
0.00% 
6.42% 
6.42% 
 
Maximum Outstanding At Any Month End
7,217,000 
7,217,000 
12,372,000 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
Total
0 
7,217,000 
7,217,000 
 
Fixed rate of interest on debt (in hundredths)
0.00% 
6.42% 
6.42% 
 
Subsidiary Banks [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Balance
2,769,748,000 
3,508,842,000 
4,996,422,000 
 
Rate (in hundredths)
1.06% 
0.95% 
0.70% 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
2012
2,353,579,000 
 
 
 
2013
1,722,000 
 
 
 
2014
525,000 
 
 
 
2015
525,000 
 
 
 
2016
149,666,000 
 
 
 
Thereafter
263,731,000 
 
 
 
Total
2,769,748,000 
3,508,842,000 
4,996,422,000 
 
Fixed rate of interest on debt (in hundredths)
1.06% 
0.95% 
0.70% 
 
Subsidiary Banks [Member] |
Funds Purchased [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Balance
1,063,318,000 
1,025,018,000 
1,315,133,000 
 
Maturity terms of debt instuments
 
one to ninety days from the transaction date 
 
 
Rate (in hundredths)
0.07% 
0.11% 
0.14% 
 
Maximum Outstanding At Any Month End
1,063,318,000 
1,465,983,000 
2,002,285,000 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
Total
1,063,318,000 
1,025,018,000 
1,315,133,000 
 
Fixed rate of interest on debt (in hundredths)
0.07% 
0.11% 
0.14% 
 
Subsidiary Banks [Member] |
Repurchase Agreements [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Balance
1,233,064,000 
1,258,762,000 
1,156,610,000 
 
Maturity terms of debt instuments
 
generally mature within 90 days  
 
 
Accrued interest payable
 
0 
186,000 
 
Rate (in hundredths)
0.12% 
0.59% 
0.46% 
 
Maximum Outstanding At Any Month End
1,393,237,000 
1,258,762,000 
1,156,610,000 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
Total
1,233,064,000 
1,258,762,000 
1,156,610,000 
 
Fixed rate of interest on debt (in hundredths)
0.12% 
0.59% 
0.46% 
 
Subsidiary Banks [Member] |
Federal Home Loan Bank Advances [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Balance
4,837,000 
801,797,000 
1,253,051,000 
 
Rate (in hundredths)
0.38% 
0.14% 
0.23% 
 
Maximum Outstanding At Any Month End
4,837,000 
2,277,977,000 
2,053,130,000 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
Total
4,837,000 
801,797,000 
1,253,051,000 
 
Fixed rate of interest on debt (in hundredths)
0.38% 
0.14% 
0.23% 
 
Subsidiary Banks [Member] |
Federal Reserve Advances [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Balance
0 
0 
850,000,000 
 
Rate (in hundredths)
0.00% 
 
0.25% 
 
Maximum Outstanding At Any Month End
0 
400,000,000 
1,100,000,000 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
Total
0 
0 
850,000,000 
 
Fixed rate of interest on debt (in hundredths)
0.00% 
 
0.25% 
 
Subsidiary Banks [Member] |
Subordinated Debentures [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Balance
398,881,000 
398,701,000 
398,539,000 
 
Rate (in hundredths)
5.74% 
5.78% 
5.53% 
 
Maximum Outstanding At Any Month End
398,881,000 
398,701,000 
398,539,000 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
Total
398,881,000 
398,701,000 
398,539,000 
 
Fixed rate of interest on debt (in hundredths)
5.74% 
5.78% 
5.53% 
 
Subsidiary Banks [Member] |
Other [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Balance
16,566,000 
24,564,000 
23,089,000 
 
Rate (in hundredths)
3.23% 
0.46% 
0.22% 
 
Maximum Outstanding At Any Month End
42,593,000 
25,326,000 
31,577,000 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
Total
16,566,000 
24,564,000 
23,089,000 
 
Fixed rate of interest on debt (in hundredths)
3.23% 
0.46% 
0.22% 
 
Subsidiary Banks [Member] |
GNMA Repurchase Liability [Member]
 
 
 
 
Debt Instrument [Line Items]
 
 
 
 
Balance
53,082,000 
0 
 
0 
Rate (in hundredths)
5.79% 
0.00% 
 
0.00% 
Maximum Outstanding At Any Month End
53,082,000 
0 
0 
 
Long-term Debt, by Maturity [Abstract]
 
 
 
 
Total
$ 53,082,000 
$ 0 
 
$ 0 
Fixed rate of interest on debt (in hundredths)
5.79% 
0.00% 
 
0.00% 
Federal and State Income Taxes (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Deferred tax liabilities: [Abstract]
 
 
 
Available for sale securities mark-to-market
$ 86,400,000 
$ 77,700,000 
 
Depreciation
29,400,000 
17,400,000 
 
Mortgage servicing rights
48,900,000 
43,800,000 
 
Lease financing
13,200,000 
14,700,000 
 
Other
18,400,000 
13,600,000 
 
Total deferred tax liabilities
196,300,000 
167,200,000 
 
Deferred tax assets: [Abstract]
 
 
 
Stock-based compensation
10,100,000 
8,300,000 
 
Credit loss allowances
102,700,000 
116,900,000 
 
Valuation adjustments
42,300,000 
36,400,000 
 
Deferred book income
9,200,000 
12,700,000 
 
Deferred compensation
29,500,000 
22,300,000 
 
Book expense in excess of pension contribution
1,900,000 
1,000,000 
 
Other
38,500,000 
27,700,000 
 
Total deferred tax assets
234,200,000 
225,300,000 
 
Deferred tax assets in excess of deferred tax liabilities
37,900,000 
58,100,000 
 
Tax accrual reduction
1,800,000 
2,200,000 
 
Current tax expense: [Abstract]
 
 
 
Federal
137,802,000 
132,165,000 
112,163,000 
State
16,085,000 
17,618,000 
16,759,000 
Total current tax expense
153,887,000 
149,783,000 
128,922,000 
Deferred tax (benefit): [Abstract]
 
 
 
Federal
3,882,000 
(24,714,000)
(19,835,000)
State
742,000 
(1,712,000)
(2,382,000)
Total deferred tax (benefit)
4,624,000 
(26,426,000)
(22,217,000)
Total income tax expense
158,511,000 
123,357,000 
106,705,000 
Income tax reconciliation by Amount: [Abstract]
 
 
 
Federal statutory tax
156,917,000 
130,078,000 
108,752,000 
Tax exempt revenue
(5,357,000)
(5,404,000)
(4,616,000)
Effect of state income taxes, net of federal benefit
11,198,000 
9,740,000 
9,165,000 
Non-controlling interest
(1,382,000)
(539,000)
(1,204,000)
Utilization of tax credits
(2,972,000)
(6,317,000)
(1,327,000)
Bank-owned life insurance
(3,879,000)
(4,133,000)
(3,424,000)
Reduction of tax accrual
(1,764,000)
(2,245,000)
0 
Other, net
5,750,000 
2,177,000 
(641,000)
Total income tax expense
158,511,000 
123,357,000 
106,705,000 
Percent rate of pretax income: [Abstract]
 
 
 
Federal statutory rate (in hundredths)
35.00% 
35.00% 
35.00% 
Tax-exempt revenue (in hundredths)
(1.00%)
(1.00%)
(2.00%)
Effect of state income taxes, net of federal benefit (in hundredths)
2.00% 
3.00% 
3.00% 
Non-controlling interest (in hundredths)
0.00% 
0.00% 
(1.00%)
Utilization of tax credits (in hundredths)
(1.00%)
(2.00%)
0.00% 
Bank-owned life insurance (in hundredths)
(1.00%)
(1.00%)
(1.00%)
Reduction of tax accrual (in hundredths)
0.00% 
(1.00%)
0.00% 
Other (in hundredths)
1.00% 
0.00% 
0.00% 
Total (in hundredths)
35.00% 
33.00% 
34.00% 
Unrecognized Tax Benefits [Roll Forward]
 
 
 
Balance as of January 1
11,900,000 
12,300,000 
13,200,000 
Additions for tax for current year positions
6,390,000 
3,700,000 
4,050,000 
Settlements during the period
(2,510,000)
0 
0 
Decreases in tax for prior year positions
0 
0 
(700,000)
Lapses of applicable statute of limitations
(3,550,000)
(4,100,000)
(4,250,000)
Balance as of December 31
12,230,000 
11,900,000 
12,300,000 
Interest and penalties accrued related to unrecognized tax benefits
1,900,000 
1,300,000 
1,400,000 
Interest and penalties accrued
$ 3,400,000 
$ 3,000,000 
 
Employee Benefits (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Thrift Plan - Defined Contribution [Abstract]
 
 
 
Employee base compensation company match employee contributions (in hundredths)
6.00% 
 
 
Employer matching rate for employee contributions minimum (in hundredths)
50.00% 
 
 
Maximum years of service for employees to obtain minimum employer matching (in years)
4Y 
 
 
Employer matching rate for employee contributions maximum (in hundredths)
200.00% 
 
 
Minimum years of service for employees to obtain maximum employer matching (in years)
15Y 
 
 
Non-elective annual contribution for qualified employees
$ 750 
 
 
Annual base employee compensation to qualify for non-elective employer contributions maximum
40,000 
 
 
Non-elective contributions
933,000 
1,000,000 
998,000 
Vesting period for employer contributions (in years)
5Y 
 
 
Thrift Plan expenses
15,400,000 
14,300,000 
13,000,000 
Incentive compensation plans [Abstract]
 
 
 
Charge to earnings for incentive compensation plan
117,800,000 
104,000,000 
91,200,000 
Pension Plan [Member]
 
 
 
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
 
 
 
Periodic pension cost recognized in period
3,859,000 
3,043,000 
 
Interest continuing to accrue on employees' account balances in defined benefit cash balance pension plan (in hundredths)
5.25% 
 
 
Change in projected benefit obligation [Roll Forward]
 
 
 
Projected benefit obligation at beginning of year
48,373,000 
46,581,000 
 
Interest cost
2,157,000 
2,257,000 
 
Actuarial loss
2,461,000 
1,489,000 
 
Benefits paid
(2,778,000)
(1,954,000)
 
Projected benefit obligation at end of year
50,213,000 1 2
48,373,000 
 
Change in plan assets [Roll Forward]
 
 
 
Plan assets at fair value at beginning of year
44,477,000 
41,689,000 
 
Actual return on plan assets
2,160,000 
4,742,000 
 
Benefits paid
(2,778,000)
(1,954,000)
 
Plan assets at fair value at end of year
43,859,000 
44,477,000 
 
Defined Benefit Plan, Funded Status of Plan [Abstract]
 
 
 
Funded status of the plan
(6,354,000)
(3,896,000)
 
Components of net periodic benefit costs [Abstract]
 
 
 
Interest cost
2,157,000 
2,257,000 
 
Expected return on plan assets
(1,957,000)
(2,126,000)
 
Amortization of unrecognized net loss
3,659,000 
2,912,000 
 
Net periodic pension cost (benefit)
3,859,000 
3,043,000 
 
Weighted-average assumptions [Abstract]
 
 
 
Discount rate (in hundredths)
4.11% 
4.75% 
 
Expected return on plan assets (in hundredths)
5.25% 
5.25% 
 
Rate of compensation increase (in hundredths)
0.00% 
0.00% 
 
Estimated Future Benefit Payments [Abstract]
 
 
 
2012
6,337,000 
 
 
2013
3,735,000 
 
 
2014
3,749,000 
 
 
2015
3,813,000 
 
 
2016
3,817,000 
 
 
2017 through 2019
16,887,000 
 
 
Total estimated future benefit payments
38,338,000 
 
 
Percentage of equities included in portfolio mix of fund used for defined benefit plan (in hundredths)
60.00% 
 
 
Percentage of bonds included in portfolio mix of fund used for defined benefit plan (in hundredths)
40.00% 
 
 
Cavanal Hill fund inception to date return rate (in hundredths)
6.80% 
 
 
Plan contribution - maximum allowed
26,000,000 
 
 
Plan contribution requirement - minimum
0 
 
 
Net pension costs currently in accumulated other comprehensive income to be recognized as net periodic pension cost in next fiscal year
3,900,000 
 
 
Post-retirement employee medical plan [Member]
 
 
 
Change in projected benefit obligation [Roll Forward]
 
 
 
Projected benefit obligation at beginning of year
2,200,000 
 
 
Projected benefit obligation at end of year
$ 2,200,000 
 
 
Thrift Plan - Defined Contribution [Abstract]
 
 
 
Annual medical insurance premiums paid for retirees (in hundredths)
50.00% 
 
 
Age of current retirees and certain employees at the time the plan was frozen (in years)
60Y 
 
 
Change in medical expense trends not significantly affecting net obligations or cost of the plan (in hundredths)
1.00% 
 
 
Stock Compensation Plans (Details) (USD $)
1 Months Ended 12 Months Ended
Jan. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Options Outstanding- Weighted Average Exercise Price [Abstract]
 
 
 
 
Options vested weighted average exercise price (in dollars per share)
 
$ 46.72 
 
$ 43.37 
Outstanding and Vested Stock Options [Abstract]
 
 
 
 
Weighted average exercise price options vested (in dollars per share)
 
$ 46.72 
 
$ 43.37 
Deferred Compensation Plan [Abstract]
 
 
 
 
Additional compensation expense for liability awards related True-Up Plan during 2011
 
$ 9,500,000 
 
 
Exercise Price 30.50 - 30.87 [Member]
 
 
 
 
Options Outstanding-Number of Shares [Roll Forward]
 
 
 
 
Non-vested shares outstanding shares ending balance (in shares)
 
30,044 
 
 
Options shares vested (in shares)
 
30,044 
 
 
Options Outstanding- Weighted Average Exercise Price [Abstract]
 
 
 
 
Options outstanding weighted average exercise price ending balance (in dollars per share)
 
$ 30.79 
 
 
Options vested weighted average exercise price (in dollars per share)
 
$ 30.79 
 
 
Outstanding and Vested Stock Options [Abstract]
 
 
 
 
Number options outstanding (in shares)
 
30,044 
 
 
Weighted average remaining contractual life (in years)
 
0.95 
 
 
Weighted average exercise price options outstanding (in dollars per share)
 
$ 30.79 
 
 
Number options vested (in shares)
 
30,044 
 
 
Weighted average exercise price options vested (in dollars per share)
 
$ 30.79 
 
 
Executive Incentive Plan [Member]
 
 
 
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
 
 
 
 
Period basis for performance measurements (in years)
 
3 Y 
 
 
Non-Vested Shares Awarded [Abstract]
 
 
 
 
Weighted average grant date fair value of non-vested shares awarded (in dollars per share)
$ 58.76 
 
 
 
Deferred Compensation Plan [Abstract]
 
 
 
 
Recorded obligation for liability awards under deferred compensation plan
 
1,300,000 
2,000,000 
 
Compensation cost of liability awards recorded as an expense (benefit)
 
760,000 
1,900,000 
1,300,000 
Stock Options [Member]
 
 
 
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
 
 
 
 
Options awarded that vest annually
 
one-seventh 
 
 
Expiration period (in years)
 
3Y 
 
 
Stock options vesting period - tier two
 
2 Y 
 
 
Stock option expiration period - tier two (in days)
 
45 D 
 
 
Options Outstanding-Number of Shares [Roll Forward]
 
 
 
 
Non-vested shares outstanding shares beginning balance (in shares)
2,621,347 
3,135,334 
3,521,763 
3,575,468 
Non-vested shares awarded shares (in shares)
87,748 
185,007 
345,945 
913,880 
Non-vested shares exercised shares (in shares)
 
(576,518)
(486,280)
(280,572)
Non-vested shares forfeited shares (in shares)
 
(60,005)
(97,443)
(487,793)
Non-vested shares vested shares (in shares)
 
(62,471)
(148,651)
(199,220)
Non-vested shares outstanding shares ending balance (in shares)
 
2,621,347 
3,135,334 
3,521,763 
Options shares vested (in shares)
 
825,682 
805,781 
903,380 
Options Outstanding- Weighted Average Exercise Price [Abstract]
 
 
 
 
Options outstanding weighted average exercise price beginning balance (in dollars per share)
$ 47.01 
$ 45.62 
$ 44.58 
$ 45.77 
Non-vested shares awarded weighted average exercise price (in dollars per share)
$ 58.76 
$ 55.94 
$ 48.30 
$ 37.24 
Options exercised weighted average exercise price (in dollars per share)
 
$ 44.35 
$ 39.29 
$ 33.49 
Options forfeited weighted average exercise price (in dollars per share)
 
$ 47.93 
$ 46.89 
$ 44.83 
Options expired weighted average exercise price (in dollars per share)
 
$ 54.13 
$ 51.35 
$ 51.76 
Options outstanding weighted average exercise price ending balance (in dollars per share)
 
$ 47.01 
$ 45.62 
$ 44.58 
Options vested weighted average exercise price (in dollars per share)
 
 
$ 45.26 
 
Aggregate intrinsic value [Abstract]
 
 
 
 
Aggregate intrinsic value, Beginning Balance
20,769,000 
24,405,000 
10,359,000 
19,200,000 
Aggregate intrinsic value, Ending Balance
 
20,769,000 
24,405,000 
10,359,000 
Aggregate intrinsic value, Options vested
 
6,779,000 
6,556,000 
3,745,000 
Outstanding and Vested Stock Options [Abstract]
 
 
 
 
Number options outstanding (in shares)
 
2,621,347 
3,135,334 
3,521,763 
Weighted average exercise price options outstanding (in dollars per share)
 
$ 47.01 
$ 45.62 
$ 44.58 
Number options vested (in shares)
 
825,682 
805,781 
903,380 
Weighted average exercise price options vested (in dollars per share)
 
 
$ 45.26 
 
Weighted average assumptions used to determine fair value of stock options awarded [Abstract]
 
 
 
 
Average risk-free interest rate (in hundredths)
 
1.87% 1
2.36% 1
1.32% 1
Dividend yield (in hundredths)
 
1.80% 
2.00% 
2.50% 
Volatility factors
 
26.80% 
26.10% 
21.80% 
Weighted average expected life (in years)
 
4.9 
4.9 
4.9 
Weighted average fair value (in dollars per share)
$ 11.48 
$ 11.92 
$ 10.17 
$ 5.36 
Compensation Cost That May Be Recognized As Future Expense [Abstract]
 
 
 
 
Unrecognized compensation cost of unvested awards, for future periods
 
4,900,000 
 
 
Expected compensation cost as future expense for 2012
 
2,200,000 
 
 
Expected compensation cost as future expense for 2013
 
1,300,000 
 
 
Expected compensation cost as future expense for 2014
 
758,000 
 
 
Expected compensation cost as future expense for 2015
 
394,000 
 
 
Expected compensation cost as future expense for 2016
 
183,000 
 
 
Expected compensation cost as future expense thereafter
 
63,000 
 
 
Stock Option Expense and Intrinsic Value [Abstract]
 
 
 
 
Stock Option Expense
 
10,000,000 
8,300,000 
5,900,000 
Intrinsic value of options exercised
 
5,500,000 
6,100,000 
3,800,000 
Stock Options [Member] |
Exercise Price 36.65 [Member]
 
 
 
 
Options Outstanding-Number of Shares [Roll Forward]
 
 
 
 
Non-vested shares outstanding shares ending balance (in shares)
 
536,106 
 
 
Options shares vested (in shares)
 
65,348 
 
 
Options Outstanding- Weighted Average Exercise Price [Abstract]
 
 
 
 
Options outstanding weighted average exercise price ending balance (in dollars per share)
 
$ 36.65 
 
 
Options vested weighted average exercise price (in dollars per share)
 
$ 36.65 
 
 
Outstanding and Vested Stock Options [Abstract]
 
 
 
 
Number options outstanding (in shares)
 
536,106 
 
 
Weighted average remaining contractual life (in years)
 
4.00 
 
 
Weighted average exercise price options outstanding (in dollars per share)
 
$ 36.65 
 
 
Number options vested (in shares)
 
65,348 
 
 
Weighted average exercise price options vested (in dollars per share)
 
$ 36.65 
 
 
Stock Options [Member] |
Exercise Price 37.74 [Member]
 
 
 
 
Options Outstanding-Number of Shares [Roll Forward]
 
 
 
 
Non-vested shares outstanding shares ending balance (in shares)
 
81,535 
 
 
Options shares vested (in shares)
 
81,535 
 
 
Options Outstanding- Weighted Average Exercise Price [Abstract]
 
 
 
 
Options outstanding weighted average exercise price ending balance (in dollars per share)
 
$ 37.74 
 
 
Options vested weighted average exercise price (in dollars per share)
 
$ 37.74 
 
 
Outstanding and Vested Stock Options [Abstract]
 
 
 
 
Number options outstanding (in shares)
 
81,535 
 
 
Weighted average remaining contractual life (in years)
 
1.50 
 
 
Weighted average exercise price options outstanding (in dollars per share)
 
$ 37.74 
 
 
Number options vested (in shares)
 
81,535 
 
 
Weighted average exercise price options vested (in dollars per share)
 
$ 37.74 
 
 
Stock Options [Member] |
Exercise Price 45.15 - 47.34 [Member]
 
 
 
 
Options Outstanding-Number of Shares [Roll Forward]
 
 
 
 
Non-vested shares outstanding shares ending balance (in shares)
 
217,277 
 
 
Options shares vested (in shares)
 
139,202 
 
 
Options Outstanding- Weighted Average Exercise Price [Abstract]
 
 
 
 
Options outstanding weighted average exercise price ending balance (in dollars per share)
 
$ 47.31 
 
 
Options vested weighted average exercise price (in dollars per share)
 
$ 47.31 
 
 
Outstanding and Vested Stock Options [Abstract]
 
 
 
 
Number options outstanding (in shares)
 
217,277 
 
 
Weighted average remaining contractual life (in years)
 
2.00 
 
 
Weighted average exercise price options outstanding (in dollars per share)
 
$ 47.31 
 
 
Number options vested (in shares)
 
139,202 
 
 
Weighted average exercise price options vested (in dollars per share)
 
$ 47.31 
 
 
Stock Options [Member] |
Exercise Price 47.05 - 48.53 [Member]
 
 
 
 
Options Outstanding-Number of Shares [Roll Forward]
 
 
 
 
Non-vested shares outstanding shares ending balance (in shares)
 
274,770 
 
 
Options shares vested (in shares)
 
125,948 
 
 
Options Outstanding- Weighted Average Exercise Price [Abstract]
 
 
 
 
Options outstanding weighted average exercise price ending balance (in dollars per share)
 
$ 47.05 
 
 
Options vested weighted average exercise price (in dollars per share)
 
$ 47.05 
 
 
Outstanding and Vested Stock Options [Abstract]
 
 
 
 
Number options outstanding (in shares)
 
274,770 
 
 
Weighted average remaining contractual life (in years)
 
2.50 
 
 
Weighted average exercise price options outstanding (in dollars per share)
 
$ 47.05 
 
 
Number options vested (in shares)
 
125,948 
 
 
Weighted average exercise price options vested (in dollars per share)
 
$ 47.05 
 
 
Stock Options [Member] |
Exercise Price 47.67 [Member]
 
 
 
 
Options Outstanding-Number of Shares [Roll Forward]
 
 
 
 
Non-vested shares outstanding shares ending balance (in shares)
 
27,484 
 
 
Options shares vested (in shares)
 
27,484 
 
 
Options Outstanding- Weighted Average Exercise Price [Abstract]
 
 
 
 
Options outstanding weighted average exercise price ending balance (in dollars per share)
 
$ 47.67 
 
 
Options vested weighted average exercise price (in dollars per share)
 
$ 47.67 
 
 
Outstanding and Vested Stock Options [Abstract]
 
 
 
 
Number options outstanding (in shares)
 
27,484 
 
 
Weighted average remaining contractual life (in years)
 
0.12 
 
 
Weighted average exercise price options outstanding (in dollars per share)
 
$ 47.67 
 
 
Number options vested (in shares)
 
27,484 
 
 
Weighted average exercise price options vested (in dollars per share)
 
$ 47.67 
 
 
Stock Options [Member] |
Exercise Price 48.30 [Member]
 
 
 
 
Options Outstanding-Number of Shares [Roll Forward]
 
 
 
 
Non-vested shares outstanding shares ending balance (in shares)
 
220,072 
 
 
Options shares vested (in shares)
 
8,942 
 
 
Options Outstanding- Weighted Average Exercise Price [Abstract]
 
 
 
 
Options outstanding weighted average exercise price ending balance (in dollars per share)
 
$ 48.30 
 
 
Options vested weighted average exercise price (in dollars per share)
 
$ 48.30 
 
 
Outstanding and Vested Stock Options [Abstract]
 
 
 
 
Number options outstanding (in shares)
 
220,072 
 
 
Weighted average remaining contractual life (in years)
 
5.00 
 
 
Weighted average exercise price options outstanding (in dollars per share)
 
$ 48.30 
 
 
Number options vested (in shares)
 
8,942 
 
 
Weighted average exercise price options vested (in dollars per share)
 
$ 48.30 
 
 
Stock Options [Member] |
Exercise Price 48.46 [Member]
 
 
 
 
Options Outstanding-Number of Shares [Roll Forward]
 
 
 
 
Non-vested shares outstanding shares ending balance (in shares)
 
523,725 
 
 
Options shares vested (in shares)
 
159,411 
 
 
Options Outstanding- Weighted Average Exercise Price [Abstract]
 
 
 
 
Options outstanding weighted average exercise price ending balance (in dollars per share)
 
$ 48.46 
 
 
Options vested weighted average exercise price (in dollars per share)
 
$ 48.46 
 
 
Outstanding and Vested Stock Options [Abstract]
 
 
 
 
Number options outstanding (in shares)
 
523,725 
 
 
Weighted average remaining contractual life (in years)
 
3.50 
 
 
Weighted average exercise price options outstanding (in dollars per share)
 
$ 48.46 
 
 
Number options vested (in shares)
 
159,411 
 
 
Weighted average exercise price options vested (in dollars per share)
 
$ 48.46 
 
 
Stock Options [Member] |
Exercise Price 54.33 [Member]
 
 
 
 
Options Outstanding-Number of Shares [Roll Forward]
 
 
 
 
Non-vested shares outstanding shares ending balance (in shares)
 
429,016 
 
 
Options shares vested (in shares)
 
187,768 
 
 
Options Outstanding- Weighted Average Exercise Price [Abstract]
 
 
 
 
Options outstanding weighted average exercise price ending balance (in dollars per share)
 
$ 54.33 
 
 
Options vested weighted average exercise price (in dollars per share)
 
$ 54.33 
 
 
Outstanding and Vested Stock Options [Abstract]
 
 
 
 
Number options outstanding (in shares)
 
429,016 
 
 
Weighted average remaining contractual life (in years)
 
3.00 
 
 
Weighted average exercise price options outstanding (in dollars per share)
 
$ 54.33 
 
 
Number options vested (in shares)
 
187,768 
 
 
Weighted average exercise price options vested (in dollars per share)
 
$ 54.33 
 
 
Stock Options [Member] |
Exercise Price 55.94 [Member]
 
 
 
 
Options Outstanding-Number of Shares [Roll Forward]
 
 
 
 
Non-vested shares outstanding shares ending balance (in shares)
 
281,318 
 
 
Options shares vested (in shares)
 
0 
 
 
Options Outstanding- Weighted Average Exercise Price [Abstract]
 
 
 
 
Options outstanding weighted average exercise price ending balance (in dollars per share)
 
$ 55.94 
 
 
Options vested weighted average exercise price (in dollars per share)
 
$ 0 
 
 
Outstanding and Vested Stock Options [Abstract]
 
 
 
 
Number options outstanding (in shares)
 
281,318 
 
 
Weighted average remaining contractual life (in years)
 
6.00 
 
 
Weighted average exercise price options outstanding (in dollars per share)
 
$ 55.94 
 
 
Number options vested (in shares)
 
0 
 
 
Weighted average exercise price options vested (in dollars per share)
 
$ 0 
 
 
Non-Vested Common Shares [Member]
 
 
 
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
 
 
 
 
Vesting period (in years)
 
5Y 
 
 
Required retention period after vesting (in years)
 
3 Y 
 
 
Options Outstanding-Number of Shares [Roll Forward]
 
 
 
 
Non-vested shares outstanding shares beginning balance (in shares)
503,738 
415,508 
 
 
Non-vested shares awarded shares (in shares)
 
142,756 
 
 
Non-vested shares forfeited shares (in shares)
 
(9,639)
 
 
Non-vested shares vested shares (in shares)
 
(44,887)
 
 
Non-vested shares outstanding shares ending balance (in shares)
 
503,738 
 
 
Outstanding and Vested Stock Options [Abstract]
 
 
 
 
Number options outstanding (in shares)
 
503,738 
 
 
Compensation Cost That May Be Recognized As Future Expense [Abstract]
 
 
 
 
Unrecognized compensation cost of unvested awards, for future periods
 
10,900,000 
 
 
Expected compensation cost as future expense for 2012
 
3,600,000 
 
 
Expected compensation cost as future expense for 2013
 
3,300,000 
 
 
Expected compensation cost as future expense for 2014
 
2,600,000 
 
 
Expected compensation cost as future expense for 2015
 
1,400,000 
 
 
Expected compensation cost as future expense for 2016
 
$ 47,000 
 
 
Non-Vested Shares Awarded [Abstract]
 
 
 
 
Total non-vested common shares awarded (in shares)
 
142,756 
 
 
Non-vested common shares awarded in period (in shares)
148,887 
 
 
 
Weighted average grant date fair value of non-vested shares awarded (in dollars per share)
 
$ 55.94 
 
 
Weighted average grant date fair value non-vested stock awards vested (in dollars per share)
 
$ 55.07 
 
 
Weighted average grant date fair value non-vested stock awards forfeited (in dollars per share)
 
$ 46.84 
 
 
Average grant date fair value of shares forfeited (in dollars per share)
 
$ 46.84 
 
 
Related Parties (Details) (USD $)
12 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2011
Board of Directors Chairman [Member]
Dec. 31, 2010
Board of Directors Chairman [Member]
Dec. 31, 2009
Board of Directors Chairman [Member]
Dec. 31, 2011
Executive Officer [Member]
Dec. 31, 2008
President [Member]
Loans To Related Parties [Roll Forward]
 
 
 
 
 
 
 
Beginning balance
$ 168,935,000 
$ 217,698,000 
 
 
 
 
 
Advances
300,080,000 
510,663,000 
 
 
 
 
 
Payments
(285,909,000)
(544,977,000)
 
 
 
 
 
Adjustments
(83,766,000)1
(14,449,000)1
 
 
 
 
 
Ending balance
99,340,000 
168,935,000 
 
 
 
 
 
Related Party Transaction [Line Items]
 
 
 
 
 
 
 
Lease payments on office space in facilities owned by related party affiliates
 
 
1,100,000 
1,100,000 
1,000,000 
 
 
Loan commitment secured by tax-exempt bonds purchased from a trust of which the related party is Chairman
 
 
 
 
 
 
$ 25,000,000 
Percentage of related party investment funds' assets held for the Company's clients (in hundredths)
 
 
 
 
 
99.00% 
 
Commitments and Contingent Liabilities (Details) (USD $)
12 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2011
Property Lease Guarantee [Member]
Dec. 31, 2011
Building Lease Guarantee [Member]
Dec. 31, 2010
Building Lease Guarantee [Member]
Dec. 31, 2009
Building Lease Guarantee [Member]
Dec. 31, 2011
Operating Lease Guarantee [Member]
Dec. 31, 2011
BOSC, INC [Member]
Customer Balance Indemnification [Member]
Dec. 31, 2010
Bank of Oklahoma, National Association [Member]
Putative Class Actions [Member]
Oct. 11, 2011
Bank of Oklahoma, National Association [Member]
Invalidated Settlement by Oklahoma Supreme Court [Member]
Dec. 31, 2011
Parent Company [Member]
Visa Membership [Member]
Dec. 31, 2011
BOKF Equity, LLC [Member]
Dec. 31, 2011
Cavanal Hill Funds [Member]
Loss Contingencies [Line Items]
 
 
 
 
 
 
 
 
 
 
 
 
 
Settlement agreement
 
 
 
 
 
 
 
 
$ 19,000,000 
$ 7,100,000 
 
 
 
Number of putative class actions named as a defendant
 
 
 
 
 
 
 
 
3 
 
 
 
 
Number of actions pending in District Court of Tulsa County
 
 
 
 
 
 
 
 
2 
 
 
 
 
Amount of contingent liability recognized from Visa membership
 
 
 
 
 
 
 
 
 
 
774,000 
 
 
Amount of proportionate receivable recognized from Visa membership
 
 
 
 
 
 
 
 
 
 
774,000 
 
 
Number of Visa Class B shares owned by entity (in shares)
 
 
 
 
 
 
 
 
 
 
251,837 
 
 
Optional period after which Class B shares can be converted to Class A Shares (in years)
 
 
 
 
 
 
 
 
 
 
3 Y 
 
 
Current exchange rate for Class A shares for each Class B share
 
 
 
 
 
 
 
 
 
 
0.4881 
 
 
Mutual fund investment in US Treasury securities
 
 
 
 
 
 
 
 
 
 
 
 
1,400,000,000 
Mutual fund investment in cash management
 
 
 
 
 
 
 
 
 
 
 
 
883,000,000 
Mutual fund investment in tax-free money market funds
 
 
 
 
 
 
 
 
 
 
 
 
343,000,000 
The net asset value of units in mutual funds (per unit)
 
 
 
 
 
 
 
 
 
 
 
 
$ 1.00 
Contingent obligations for additional investments in private equity funds
 
 
 
 
 
 
 
 
 
 
 
10,000,000 
 
Customer balances subject to indemnification related to failure to settle a transaction or repay a margin loan
 
 
 
 
 
 
 
4,300,000 
 
 
 
 
 
Guarantor Obligations [Line Items]
 
 
 
 
 
 
 
 
 
 
 
 
 
Lease term for bank building (in years)
 
 
 
57Y 
 
 
 
 
 
 
 
 
 
Annual base rent for building lease
 
 
 
3,200,000 
3,200,000 
3,200,000 
 
 
 
 
 
 
 
Net rent expense on building lease
 
 
 
3,200,000 
3,000,000 
3,000,000 
 
 
 
 
 
 
 
Total rent expense for all leases
 
 
 
20,600,000 
21,200,000 
21,400,000 
 
 
 
 
 
 
 
Future minimum lease payments [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
Future minimum lease payments for equipment and premises under operating leases due current
 
 
 
 
 
 
19,100,000 
 
 
 
 
 
 
Future minimum lease payments for equipment and premises under operating leases due in two years
 
 
 
 
 
 
17,800,000 
 
 
 
 
 
 
Future minimum lease payments for equipment and premises under operating leases due in three years
 
 
 
 
 
 
17,000,000 
 
 
 
 
 
 
Future minimum lease payments for equipment and premises under operating leases due in four years
 
 
 
 
 
 
16,200,000 
 
 
 
 
 
 
Future minimum lease payments for equipment and premises under operating leases due in five years
 
 
 
 
 
 
14,300,000 
 
 
 
 
 
 
Future minimum lease payments for equipment and premises under operating leases due thereafter
 
 
 
 
 
 
85,900,000 
 
 
 
 
 
 
Minimum average cash balances required of member banks
968,000,000 
950,000,000 
 
 
 
 
 
 
 
 
 
 
 
Contingent obligation for guaranteed rents on office space with City of Tulsa
 
 
28,700,000 
 
 
 
 
 
 
 
 
 
 
Remaining guaranteed rents on office space
 
 
17,100,000 
 
 
 
 
 
 
 
 
 
 
Percentage of net cash flow to be received as part of rent guarantees (in hundredths)
 
 
80.00% 
 
 
 
 
 
 
 
 
 
 
Maximum amount to be received under rent agreement with City Of Tulsa
 
 
$ 4,500,000 
 
 
 
 
 
 
 
 
 
 
Commitments and Contingent Liabilities Variable Interests (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Variable Interest Entity, Primary Beneficiary [Member] |
Loans VIE [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets
$ 10,000 
$ 0 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
0 
0 
Variable Interest Entity, Primary Beneficiary [Member] |
Loans VIE [Member] |
Private Equity Funds Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets
0 
0 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
 
0 
Variable Interest Entity, Primary Beneficiary [Member] |
Loans VIE [Member] |
Tax Credit Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets
10,000 
0 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
 
0 
Variable Interest Entity, Primary Beneficiary [Member] |
Loans VIE [Member] |
Other Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets
0 
0 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
 
0 
Variable Interest Entity, Primary Beneficiary [Member] |
Other Assets VIE [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets
52,591 
52,591 
Variable Interest Entity, Primary Beneficiary [Member] |
Other Assets VIE [Member] |
Private Equity Funds Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets
30,902 
25,436 
Variable Interest Entity, Primary Beneficiary [Member] |
Other Assets VIE [Member] |
Tax Credit Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets
14,483 
0 
Variable Interest Entity, Primary Beneficiary [Member] |
Other Assets VIE [Member] |
Other Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets
7,206 
7,516 
Variable Interest Entity, Primary Beneficiary [Member] |
Other Liabilities VIE [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
0 
0 
Variable Interest Entity, Primary Beneficiary [Member] |
Other Liabilities VIE [Member] |
Private Equity Funds Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
0 
0 
Variable Interest Entity, Primary Beneficiary [Member] |
Other Liabilities VIE [Member] |
Tax Credit Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
0 
0 
Variable Interest Entity, Primary Beneficiary [Member] |
Other Liabilities VIE [Member] |
Other Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
0 
0 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities
2,194 
2,974 
Variable Interest Entity, Primary Beneficiary [Member] |
Other Borrowings VIE [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
10,964 
0 
Variable Interest Entity, Primary Beneficiary [Member] |
Other Borrowings VIE [Member] |
Private Equity Funds Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
0 
0 
Variable Interest Entity, Primary Beneficiary [Member] |
Other Borrowings VIE [Member] |
Tax Credit Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
10,964 
0 
Variable Interest Entity, Primary Beneficiary [Member] |
Other Borrowings VIE [Member] |
Other Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
0 
0 
Variable Interest Entity, Primary Beneficiary [Member] |
Non Controlling Interest VIE [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
36,184 
22,152 
Variable Interest Entity, Primary Beneficiary [Member] |
Non Controlling Interest VIE [Member] |
Private Equity Funds Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
26,042 
21,957 
Variable Interest Entity, Primary Beneficiary [Member] |
Non Controlling Interest VIE [Member] |
Tax Credit Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
10,000 
0 
Variable Interest Entity, Primary Beneficiary [Member] |
Non Controlling Interest VIE [Member] |
Other Variable Interest Entities [Member]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities
142 
195 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Loans VIE [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets
0 
0 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Loans VIE [Member] |
Private Equity Funds Variable Interest Entities [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities
 
0 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Loans VIE [Member] |
Tax Credit Variable Interest Entities [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets
0 
 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Loans VIE [Member] |
Other Variable Interest Entities [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets
0 
0 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Other Assets VIE [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets
48,840 
38,460 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Other Assets VIE [Member] |
Tax Credit Variable Interest Entities [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets
37,890 
28,580 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Other Assets VIE [Member] |
Other Variable Interest Entities [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets
10,950 
9,880 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Other Liabilities VIE [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities
18,278 
18,642 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Other Liabilities VIE [Member] |
Tax Credit Variable Interest Entities [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities
16,084 
15,668 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Other Borrowings VIE [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities
0 
0 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Other Borrowings VIE [Member] |
Tax Credit Variable Interest Entities [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities
0 
0 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Other Borrowings VIE [Member] |
Other Variable Interest Entities [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities
0 
0 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Non Controlling Interest VIE [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities
0 
0 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Non Controlling Interest VIE [Member] |
Tax Credit Variable Interest Entities [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities
0 
0 
Variable Interest Entity, Not Primary Beneficiary [Member] |
Non Controlling Interest VIE [Member] |
Other Variable Interest Entities [Member]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities [Abstract]
 
 
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities
$ 0 
$ 0 
Shareholders' Equity (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Common stock, authorized (in shares)
2,500,000,000 
2,500,000,000 
 
Common stock, par value (in dollars per share)
$ 0.00006 
$ 0.00006 
 
Minimum Tier 1 capital ratio for banks that meet certain specified criteria (in hundredths)
6.00% 
 
 
Minimum total capital ratio for banks that meet certain specified criteria (in hundredths)
10.00% 
 
 
Minimum leverage capital ratio for banks that meet certain specified criteria (in hundredths)
5.00% 
 
 
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
 
 
 
Beginning balance
$ 107,839,000 
$ (10,740,000)
$ (222,886,000)
Net change in unrealized gain (loss)
47,287,000 
185,463,000 
370,030,000 
Other-than-temporary impairment losses recognized in earnings
23,507,000 
27,809,000 
34,413,000 
Transfer of net unrealized gain from AFS to Investment securities
0 
 
 
Amortization of unrealized gain on investment securities transferred from AFS
(1,357,000)
 
 
Reclassification adjustment for net (gains) losses realized and included in earnings included in earnings
(33,840,000)
(21,618,000)
(59,058,000)
Income tax expense (benefit)
(14,457,000)
(73,075,000)
(133,239,000)
Ending balance
128,979,000 
107,839,000 
(10,740,000)
Outstanding amounts to all affiliates
68,000,000 
50,000,000 
 
Regulatory Capital Disclosure [Abstract]
 
 
 
Total Capital to Risk Weighted Assets
2,851,099,000 
2,651,771,000 
 
Total Capital to Risk Weighted Assets (in hundredths)
16.49% 
16.20% 
 
Tier I Capital to Risk Weighted Assets
2,295,061,000 
2,076,525,000 
 
Tier I Capital to Risk Weighted Assets (in hundredths)
13.27% 
12.69% 
 
Tier I Capital to Average Assets
2,295,061,000 
2,076,525,000 
 
Tier I Capital to Average Assets (in hundredths)
9.15% 
8.74% 
 
Unrealized Gain (Loss) On Available For Sale Securities [Member]
 
 
 
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
 
 
 
Beginning balance
122,494,000 
6,772,000 
(204,648,000)
Net change in unrealized gain (loss)
45,593,000 
181,051,000 
369,104,000 
Other-than-temporary impairment losses recognized in earnings
23,507,000 
27,809,000 
34,413,000 
Transfer of net unrealized gain from AFS to Investment securities
(12,999,000)
 
 
Amortization of unrealized gain on investment securities transferred from AFS
0 
 
 
Reclassification adjustment for net (gains) losses realized and included in earnings included in earnings
(34,144,000)
(21,882,000)
(59,320,000)
Income tax expense (benefit)
(8,711,000)
(71,256,000)
132,777,000 
Ending balance
135,740,000 
122,494,000 
6,772,000 
Accumulated Loss on Effective Cash Flow Hedges [Member]
 
 
 
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
 
 
 
Beginning balance
(878,000)
(1,039,000)
(1,199,000)
Net change in unrealized gain (loss)
0 
0 
0 
Other-than-temporary impairment losses recognized in earnings
0 
0 
0 
Transfer of net unrealized gain from AFS to Investment securities
0 
 
 
Amortization of unrealized gain on investment securities transferred from AFS
0 
 
 
Reclassification adjustment for net (gains) losses realized and included in earnings included in earnings
304,000 
264,000 
262,000 
Income tax expense (benefit)
(118,000)
(103,000)
(102,000)
Ending balance
(692,000)
(878,000)
(1,039,000)
Unrealized Loss On Employee Benefit Plans [Member]
 
 
 
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
 
 
 
Beginning balance
(13,777,000)
(16,473,000)
(17,039,000)
Net change in unrealized gain (loss)
1,694,000 
4,412,000 
926,000 
Other-than-temporary impairment losses recognized in earnings
0 
0 
0 
Transfer of net unrealized gain from AFS to Investment securities
0 
 
 
Amortization of unrealized gain on investment securities transferred from AFS
0 
 
 
Reclassification adjustment for net (gains) losses realized and included in earnings included in earnings
0 
0 
0 
Income tax expense (benefit)
(659,000)
(1,716,000)
(360,000)
Ending balance
(12,742,000)
(13,777,000)
(16,473,000)
Accumulated Unrealized Gain on AFS Securities Transferred to Investment Securities [Member]
 
 
 
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
 
 
 
Beginning balance
0 
 
 
Net change in unrealized gain (loss)
0 
 
 
Other-than-temporary impairment losses recognized in earnings
0 
 
 
Transfer of net unrealized gain from AFS to Investment securities
12,999,000 
 
 
Amortization of unrealized gain on investment securities transferred from AFS
(1,357,000)
 
 
Reclassification adjustment for net (gains) losses realized and included in earnings included in earnings
0 
 
 
Income tax expense (benefit)
(4,969,000)
 
 
Ending balance
6,673,000 
 
 
BOKF, NA [Member]
 
 
 
Allowed dividends without regulatory approval
15,000,000 
 
 
Maximum percentage of unimpaired capital on loan commitments and equity investments to a single affiliate (in hundredths)
10.00% 
 
 
Maximum percentage of unimpaired capital on loan commitments and equity investments to all affiliates (in hundredths)
20.00% 
 
 
Maximum loan commitments and equity investments to a single affiliate
241,000,000 
 
 
Maximum loan commitments and equity investments to all affiliates
481,000,000 
 
 
Largest loan commitment and equity investment to a single affiliate
24,000,000 
 
 
Aggregate loan commitment and equity investment to all affiliates
323,000,000 
253,000,000 
 
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
 
 
 
Outstanding amounts to all affiliates
50,000,000 
68,000,000 
 
BOKF, NA [Member]
 
 
 
Regulatory Capital Disclosure [Abstract]
 
 
 
Total Capital to Risk Weighted Assets
2,329,670,000 
 
 
Total Capital to Risk Weighted Assets (in hundredths)
13.53% 
 
 
Tier I Capital to Risk Weighted Assets
1,775,182,000 
 
 
Tier I Capital to Risk Weighted Assets (in hundredths)
10.31% 
 
 
Tier I Capital to Average Assets
1,775,182,000 
 
 
Tier I Capital to Average Assets (in hundredths)
7.11% 
 
 
Bank of Oklahoma [Member]
 
 
 
Regulatory Capital Disclosure [Abstract]
 
 
 
Total Capital to Risk Weighted Assets
 
1,528,078,000 
 
Total Capital to Risk Weighted Assets (in hundredths)
 
13.47% 
 
Tier I Capital to Risk Weighted Assets
 
1,017,458,000 
 
Tier I Capital to Risk Weighted Assets (in hundredths)
 
8.97% 
 
Tier I Capital to Average Assets
 
1,017,458,000 
 
Tier I Capital to Average Assets (in hundredths)
 
5.80% 
 
Bank of Texas [Member]
 
 
 
Regulatory Capital Disclosure [Abstract]
 
 
 
Total Capital to Risk Weighted Assets
 
479,682,000 
 
Total Capital to Risk Weighted Assets (in hundredths)
 
12.26% 
 
Tier I Capital to Risk Weighted Assets
 
430,534,000 
 
Tier I Capital to Risk Weighted Assets (in hundredths)
 
11.00% 
 
Tier I Capital to Average Assets
 
430,534,000 
 
Tier I Capital to Average Assets (in hundredths)
 
8.06% 
 
Bank of Albuquerque [Member]
 
 
 
Regulatory Capital Disclosure [Abstract]
 
 
 
Total Capital to Risk Weighted Assets
 
143,225,000 
 
Total Capital to Risk Weighted Assets (in hundredths)
 
18.45% 
 
Tier I Capital to Risk Weighted Assets
 
133,487,000 
 
Tier I Capital to Risk Weighted Assets (in hundredths)
 
17.20% 
 
Tier I Capital to Average Assets
 
133,487,000 
 
Tier I Capital to Average Assets (in hundredths)
 
7.19% 
 
Bank of Arkansas [Member]
 
 
 
Regulatory Capital Disclosure [Abstract]
 
 
 
Total Capital to Risk Weighted Assets
 
38,065,000 
 
Total Capital to Risk Weighted Assets (in hundredths)
 
18.18% 
 
Tier I Capital to Risk Weighted Assets
 
35,423,000 
 
Tier I Capital to Risk Weighted Assets (in hundredths)
 
16.92% 
 
Tier I Capital to Average Assets
 
35,423,000 
 
Tier I Capital to Average Assets (in hundredths)
 
11.91% 
 
Colorado State Bank and Trust [Member]
 
 
 
Regulatory Capital Disclosure [Abstract]
 
 
 
Total Capital to Risk Weighted Assets
 
97,592,000 
 
Total Capital to Risk Weighted Assets (in hundredths)
 
13.76% 
 
Tier I Capital to Risk Weighted Assets
 
88,723,000 
 
Tier I Capital to Risk Weighted Assets (in hundredths)
 
12.51% 
 
Tier I Capital to Average Assets
 
88,723,000 
 
Tier I Capital to Average Assets (in hundredths)
 
6.85% 
 
Bank of Arizona [Member]
 
 
 
Regulatory Capital Disclosure [Abstract]
 
 
 
Total Capital to Risk Weighted Assets
 
31,298,000 
 
Total Capital to Risk Weighted Assets (in hundredths)
 
12.05% 
 
Tier I Capital to Risk Weighted Assets
 
27,977,000 
 
Tier I Capital to Risk Weighted Assets (in hundredths)
 
10.77% 
 
Tier I Capital to Average Assets
 
27,977,000 
 
Tier I Capital to Average Assets (in hundredths)
 
10.16% 
 
Bank of Kansas City [Member]
 
 
 
Regulatory Capital Disclosure [Abstract]
 
 
 
Total Capital to Risk Weighted Assets
 
20,408,000 
 
Total Capital to Risk Weighted Assets (in hundredths)
 
19.45% 
 
Tier I Capital to Risk Weighted Assets
 
19,247,000 
 
Tier I Capital to Risk Weighted Assets (in hundredths)
 
18.34% 
 
Tier I Capital to Average Assets
 
19,247,000 
 
Tier I Capital to Average Assets (in hundredths)
 
6.21% 
 
Preferred Stock [Member]
 
 
 
Preferred stock, authorized (in shares)
1,000,000,000 
 
 
Preferred stock at par value (in dollars per share)
$ 0.00005 
 
 
Preferred stock conversion rate
One share of Common Stock for each 36 shares of Series A Preferred Stock 
 
 
Rate of annual cumulative dividends (in hundredths)
6.00% 
 
 
Aggregate liquidation preference
$ 15,000,000 
 
 
Common Stock [Member]
 
 
 
Common stock, authorized (in shares)
2,500,000,000 
 
 
Common stock, par value (in dollars per share)
$ 0.00006 
 
 
Number of votes per share (in shares)
1 
 
 
Earnings Per Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Numerator: [Abstract]:
 
 
 
Net income
$ 285,875 
$ 246,754 
$ 200,578 
Earnings allocated to participating securities
(2,214)
(1,583)
(818)
Numerator for basic earnings per share - income available to common shareholders
283,661 
245,171 
199,760 
Effect of reallocating undistributed earnings of participating securities
6 
3 
1 
Numerator for diluted earnings per share - income available to common shareholders
$ 283,667 
$ 245,174 
$ 199,761 
Denominator: [Abstract]
 
 
 
Weighted average shares outstanding (in shares)
68,313,898 
68,062,047 
67,653,035 
Less: Participating securities included in weighted average shares outstanding (in shares)
(526,222)
(434,312)
(277,648)
Denominator for basic earnings per common share (in shares)
67,787,676 
67,627,735 
67,375,387 
Dilutive effect of employee stock compensation plans (in shares)
251,087 1
203,999 1
112,557 1
Denominator for diluted earnings per common share (in shares)
68,038,763 
67,831,734 
67,487,944 
Basic earnings per share (in dollars per share)
$ 4.18 
$ 3.63 
$ 2.96 
Diluted earnings per share (in dollars per share)
$ 4.17 
$ 3.61 
$ 2.96 
Excludes employee stock options with exercise prices greater than current market price
769,041 
1,245,483 
2,735,375 
Reportable Segments (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Reportable Segments [Abstract]
 
 
 
Number of principal lines of business
3 
 
 
Range of expected duration of deposit accounts, lower range
 
30D 
 
Range of expected duration of deposit accounts, upper range
 
5Y 
 
Percentage of revenue from single external customers (in hundredths)
 
10.00% 
 
Segment Reporting Information [Line Items]
 
 
 
Net interest revenue
$ 691,494 
$ 709,052 
$ 710,364 
Provision for (reduction of) allowances for credit losses
(6,050)
105,139 
195,900 
Net interest revenue after provision for (reduction of) allowances for credit losses
697,544 
603,913 
514,464 
Other operating expense
821,473 
753,170 
696,733 
Income before taxes
448,335 
371,651 
310,721 
Federal and state income tax
158,511 
123,357 
106,705 
Net income
289,824 
248,294 
204,016 
Net income attributable to non-controlling interest
3,949 
1,540 
3,438 
Net income attributable to BOKF
285,875 
246,754 
200,578 
Commercial Banking [Member]
 
 
 
Segment Reporting Information [Line Items]
 
 
 
Net interest revenue from external sources
346,861 
343,241 
346,608 
Net interest revenue (expense) from internal sources
(29,919)
(45,144)
(50,989)
Net interest revenue
316,942 
298,097 
295,619 
Provision for (reduction of) allowances for credit losses
21,007 
70,752 
101,120 
Net interest revenue after provision for (reduction of) allowances for credit losses
295,935 
227,345 
194,499 
Other operating revenue
150,012 
140,317 
133,390 
Other operating expense
234,342 
233,455 
230,224 
Income before taxes
211,605 
134,207 
97,665 
Federal and state income tax
82,314 
52,207 
37,992 
Net income
129,291 
82,000 
59,673 
Net income attributable to non-controlling interest
0 
0 
0 
Net income attributable to BOKF
129,291 
82,000 
59,673 
Average assets
9,627,257 
9,007,403 
10,102,655 
Average invested capital
884,326 
899,005 
950,684 
Performance measurements [Abstract]
 
 
 
Return on average assets (in hundredths)
1.34% 
0.91% 
0.59% 
Return on average invested capital (in hundredths)
14.62% 
9.12% 
6.28% 
Efficiency ratio (in hundredths)
50.27% 
53.05% 
53.66% 
Consumer Banking [Member]
 
 
 
Segment Reporting Information [Line Items]
 
 
 
Net interest revenue from external sources
89,745 
86,291 
57,647 
Net interest revenue (expense) from internal sources
33,109 
47,624 
73,796 
Net interest revenue
122,854 
133,915 
131,443 
Provision for (reduction of) allowances for credit losses
13,451 
24,705 
21,062 
Net interest revenue after provision for (reduction of) allowances for credit losses
109,403 
109,210 
110,381 
Other operating revenue
224,875 
215,506 
169,622 
Other operating expense
279,444 
242,511 
242,981 
Income before taxes
54,834 
82,205 
37,022 
Federal and state income tax
21,330 
31,978 
14,402 
Net income
33,504 
50,227 
22,620 
Net income attributable to non-controlling interest
0 
0 
0 
Net income attributable to BOKF
33,504 
50,227 
22,620 
Average assets
5,937,585 
6,243,519 
6,148,067 
Average invested capital
273,809 
277,837 
253,233 
Performance measurements [Abstract]
 
 
 
Return on average assets (in hundredths)
0.56% 
0.80% 
0.37% 
Return on average invested capital (in hundredths)
12.24% 
18.08% 
8.93% 
Efficiency ratio (in hundredths)
74.66% 
72.82% 
81.26% 
Wealth Management [Member]
 
 
 
Segment Reporting Information [Line Items]
 
 
 
Net interest revenue from external sources
26,785 
31,161 
24,665 
Net interest revenue (expense) from internal sources
15,783 
12,373 
19,165 
Net interest revenue
42,568 
43,534 
43,830 
Provision for (reduction of) allowances for credit losses
2,860 
10,569 
11,028 
Net interest revenue after provision for (reduction of) allowances for credit losses
39,708 
32,965 
32,802 
Other operating revenue
171,490 
165,204 
156,329 
Other operating expense
188,200 
177,609 
171,158 
Income before taxes
22,998 
20,560 
17,973 
Federal and state income tax
8,946 
7,998 
6,991 
Net income
14,052 
12,562 
10,982 
Net income attributable to non-controlling interest
0 
0 
0 
Net income attributable to BOKF
14,052 
12,562 
10,982 
Average assets
3,829,894 
3,499,115 
3,027,312 
Average invested capital
174,927 
169,775 
160,276 
Performance measurements [Abstract]
 
 
 
Return on average assets (in hundredths)
0.37% 
0.36% 
0.36% 
Return on average invested capital (in hundredths)
8.03% 
7.40% 
6.85% 
Efficiency ratio (in hundredths)
88.15% 
85.39% 
85.83% 
Funds Management and Other [Member]
 
 
 
Segment Reporting Information [Line Items]
 
 
 
Net interest revenue from external sources
228,103 
248,359 
281,444 
Net interest revenue (expense) from internal sources
(18,973)
(14,853)
(41,972)
Net interest revenue
209,130 
233,506 
239,472 
Provision for (reduction of) allowances for credit losses
(43,368)
(887)
62,690 
Net interest revenue after provision for (reduction of) allowances for credit losses
252,498 
234,393 
176,782 
Other operating revenue
25,887 
(119)
33,649 
Other operating expense
119,487 
99,595 
52,370 
Income before taxes
158,898 
134,679 
158,061 
Federal and state income tax
45,921 
31,174 
47,320 
Net income
112,977 
103,505 
110,741 
Net income attributable to non-controlling interest
3,949 
1,540 
3,438 
Net income attributable to BOKF
109,028 
101,965 
107,303 
Average assets
5,100,125 
4,768,821 
3,618,007 
Average invested capital
1,348,803 
1,078,026 
712,848 
BOK Financial Consolidated [Member]
 
 
 
Segment Reporting Information [Line Items]
 
 
 
Net interest revenue from external sources
691,494 
709,052 
710,364 
Net interest revenue (expense) from internal sources
0 
0 
0 
Net interest revenue
691,494 
709,052 
710,364 
Provision for (reduction of) allowances for credit losses
(6,050)
105,139 
195,900 
Net interest revenue after provision for (reduction of) allowances for credit losses
697,544 
603,913 
514,464 
Other operating revenue
572,264 
520,908 
492,990 
Other operating expense
821,473 
753,170 
696,733 
Income before taxes
448,335 
371,651 
310,721 
Federal and state income tax
158,511 
123,357 
106,705 
Net income
289,824 
248,294 
204,016 
Net income attributable to non-controlling interest
3,949 
1,540 
3,438 
Net income attributable to BOKF
285,875 
246,754 
200,578 
Average assets
24,494,861 
23,518,858 
22,896,040 
Average invested capital
$ 2,681,865 
$ 2,424,643 
$ 2,077,041 
Performance measurements [Abstract]
 
 
 
Return on average assets (in hundredths)
1.17% 
1.05% 
0.88% 
Return on average invested capital (in hundredths)
10.66% 
10.18% 
9.66% 
Efficiency ratio (in hundredths)
63.27% 
60.83% 
59.07% 
Fair Value Measurements, Financial Instruments (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Dec. 31, 2011
Commercial Loan [Member]
Dec. 31, 2010
Commercial Loan [Member]
Dec. 31, 2011
Commercial Real Estate [Member]
Dec. 31, 2010
Commercial Real Estate [Member]
Dec. 31, 2011
Residential Mortgage [Member]
Dec. 31, 2010
Residential Mortgage [Member]
Dec. 31, 2011
Consumer Loan [Member]
Dec. 31, 2010
Consumer Loan [Member]
Dec. 31, 2011
Time Deposits [Member]
Dec. 31, 2010
Time Deposits [Member]
Dec. 31, 2011
Other Borrowings [Member]
Dec. 31, 2010
Other Borrowings [Member]
Dec. 31, 2011
Subordinated Debentures [Member]
Dec. 31, 2010
Subordinated Debentures [Member]
Dec. 31, 2011
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Dec. 31, 2010
Carrying (Reported) Amount, Fair Value Disclosure [Member]
Dec. 31, 2011
Estimate of Fair Value, Fair Value Disclosure [Member]
Dec. 31, 2010
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value Measurements [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Allowance for loan losses excluding loans held for sale
$ 207,000,000 
$ 266,000,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cash and cash equivalents
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
986,365,000 
1,269,404,000 
986,365,000 
1,269,404,000 
Trading securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
76,800,000 
55,467,000 
76,800,000 
55,467,000 
Investment securities [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Municipal and other tax-exempt
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
128,697,000 
184,898,000 
133,670,000 
188,577,000 
U.S. agency residential mortgage-backed securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
121,704,000 
 
120,536,000 
 
Other debt securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
188,835,000 
154,655,000 
208,451,000 
157,528,000 
Total investment securities
439,236,000 
339,553,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
439,236,000 
339,553,000 
462,657,000 
346,105,000 
Available for sale securities [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Treasury
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1,006,000 
 
1,006,000 
 
Municipal and other tax-exempt
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
68,837,000 
72,942,000 
68,837,000 
72,942,000 
U.S. agency residential mortgage-backed securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
9,588,177,000 
8,446,908,000 
9,588,177,000 
8,446,908,000 
Private issue residential mortgage-backed securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
419,166,000 
644,210,000 
419,166,000 
644,210,000 
Other debt securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
36,495,000 
6,401,000 
36,495,000 
6,401,000 
Federal Reserve Bank stock
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
33,424,000 
 
33,424,000 
Federal Home Loan Bank stock
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
42,207,000 
 
42,207,000 
Perpetual preferred stock
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
18,446,000 
22,114,000 
18,446,000 
22,114,000 
Equity securities and mutual funds
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
47,238,000 
43,046,000 
47,238,000 
43,046,000 
Total available for sale securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
10,179,365,000 
9,235,621,000 
10,179,365,000 
9,235,621,000 
Mortgage trading securities
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
651,226,000 
428,021,000 
651,226,000 
428,021,000 
Residential mortgage loans held for sale
188,125,000 
263,413,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
188,125,000 
263,413,000 
188,125,000 
263,413,000 
Loans [Abstract]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Commercial
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
6,571,454,000 
5,933,996,000 
6,517,795,000 
5,849,443,000 
Commercial real estate
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2,279,909,000 
2,277,350,000 
2,267,375,000 
2,221,443,000 
Residential mortgage
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1,970,461,000 
1,828,248,000 
2,034,898,000 
1,860,913,000 
Consumer
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
447,919,000 
603,442,000 
436,490,000 
605,656,000 
Total
11,269,743,000 
10,643,036,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
11,269,743,000 
10,643,036,000 
11,256,558,000 
10,537,454,000 
Allowance for loan losses
253,481,000 
292,971,000 
292,095,000 
273,236,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(253,481,000)
(292,971,000)
0 
0 
Net loans
11,016,262,000 
10,350,065,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
11,016,262,000 
10,350,065,000 
11,256,558,000 
10,537,454,000 
Mortgage servicing rights
86,783,000 
115,723,000 
73,824,000 
42,752,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
86,783,000 
115,723,000 
86,783,000 
115,723,000 
Derivative contracts, assets
293,859,000 1
270,445,000 1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
293,859,000 
270,445,000 
293,859,000 
270,445,000 
Other assets - private equity funds
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
30,902,000 
25,436,000 
30,902,000 
25,436,000 
Deposits with no stated maturity
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
15,380,598,000 
13,669,893,000 
15,380,598,000 
13,669,893,000 
Time deposits
3,381,982,000 
3,509,168,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3,381,982,000 
3,509,168,000 
3,441,610,000 
2,979,505,000 
Other borrowings
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2,370,867,000 
3,117,358,000 
2,369,224,000 
2,982,460,000 
Subordinated debentures
398,881,000 
398,701,000 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
398,881,000 
398,701,000 
411,243,000 
413,328,000 
Derivative contracts
$ 236,522,000 1
$ 215,420,000 1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
$ 236,522,000 
$ 215,420,000 
$ 236,522,000 
$ 215,420,000 
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Contractual Yield Range, Minimum (in hundredths)
 
 
 
 
0.25% 
0.25% 
0.38% 
0.38% 
0.38% 
0.38% 
0.38% 
0.38% 
0.01% 
0.01% 
0.25% 
0.13% 
5.19% 
5.19% 
 
 
 
 
Contractual Yield Range, Maximum (in hundredths)
 
 
 
 
30.00% 
18.00% 
18.00% 
18.00% 
18.00% 
18.00% 
21.00% 
21.00% 
9.64% 
9.64% 
6.58% 
6.58% 
5.82% 
5.82% 
 
 
 
 
Average Re-pricing (in years)
 
 
 
 
0.57 
0.57 
1.26 
1.17 
3.26 
3.65 
0.42 
0.67 
2.07 
1.85 
0.00 
0.02 
1.44 
2.30 
 
 
 
 
Discount Rate Range, Minimum (in hundredths)
 
 
 
 
0.63% 
0.72% 
0.28% 
0.29% 
1.14% 
0.79% 
1.88% 
1.98% 
1.02% 
0.82% 
0.04% 
0.13% 
 
 
 
 
 
 
Discount Rate Range, Maximum (in hundredths)
 
 
 
 
3.85% 
4.67% 
3.51% 
3.81% 
3.70% 
4.58% 
3.88% 
3.91% 
1.43% 
1.56% 
2.76% 
2.73% 
 
 
 
 
 
 
Discount Rate (in hundredths)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3.29% 
3.72% 
 
 
 
 
Fair Value Measurements, Fair Value Of Financial Instruments Measured On A Recurring Basis (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Assets [Abstract]
 
 
 
 
Trading securities
$ 76,800,000 
$ 55,467,000 
 
 
Available for sale securities [Abstract]
 
 
 
 
Residential mortgage loans held for sale
188,125,000 
263,413,000 
 
 
Mortgage servicing rights
86,783,000 
115,723,000 
73,824,000 
42,752,000 
Derivative contracts, assets
293,859,000 1
270,445,000 1
 
 
Liabilities [Abstract]
 
 
 
 
Derivative contracts
236,522,000 1
215,420,000 1
 
 
Investment grade taxable securities par rate of yield (in hundredths)
 
1.76% 
 
 
Investment grade taxable securities par rate of yield, lower range (in hundredths)
1.60% 
 
 
 
Investment grade taxable securities par rate of yield, upper range (in hundredths)
1.80% 
 
 
 
Average yields on comparable short-term taxable securities, maximum
1.00% 
1.00% 
 
 
Investment grade tax-exempt securities par rate of yield, minimum (in hundredths)
1.00% 
1.15% 
 
 
Investment grade tax-exempt securities par rate of yield, maximum (in hundredths)
1.50% 
1.45% 
 
 
Investment grade tax-exempt securities yield spread over comparable securities, minimum (in basis points)
75 
75 
 
 
Investment grade tax-exempt securities yield spread over comparable securities, maximum (in basis points)
80 
80 
 
 
Percentage of estimated fair value to par value of tax-exempt securities rated investment grade, minimum (in hundredths)
98.79% 
99.08% 
 
 
Percentage of estimated fair value to par value of tax-exempt securities rated investment grade, maximum (in hundredths)
100.00% 
100.00% 
 
 
Municipal and tax-exempt securities rated below investment grade
13,000,000 
11,000,000 
 
 
Below investment grade tax-exempt securities par rate of yield, minimum (in hundredths)
6.25% 
4.62% 
 
 
Below investment grade tax-exempt securities par rate of yield, maximum (in hundredths)
9.58% 
8.93% 
 
 
Below investment grade tax-exempt securities yield spread over comparable securities (in basis points)
600 
425 
 
 
Percentage of estimated fair value to par value of tax exempt securities rated below investment grade minimum (in hundredths)
76.45% 
85.13% 
 
 
Percentage of estimated fair value to par value of tax exempt securities rated below investment grade maximum (in hundredths)
76.92% 
85.34% 
 
 
Fair Value, Measurements, Recurring [Member]
 
 
 
 
Assets [Abstract]
 
 
 
 
Trading securities
76,800,000 
55,467,000 
 
 
Available for sale securities [Abstract]
 
 
 
 
U.S. Treasury
1,006,000 
 
 
 
Municipal and other tax-exempt
68,837,000 
72,942,000 
 
 
U.S. agency residential mortgage-backed securities
9,588,177,000 
8,446,908,000 
 
 
Private issue residential mortgage-backed securities
419,166,000 
644,210,000 
 
 
Other debt securities
36,495,000 
6,401,000 
 
 
Perpetual preferred stock
18,446,000 
22,114,000 
 
 
Equity securities and mutual funds
47,238,000 
43,046,000 
 
 
Total available for sale securities
10,179,365,000 
9,235,621,000 
 
 
Mortgage trading securities
651,226,000 
428,021,000 
 
 
Residential mortgage loans held for sale
188,125,000 
263,413,000 
 
 
Mortgage servicing rights
86,783,000 
115,723,000 
 
 
Derivative contracts, assets
293,859,000 2
270,445,000 2
 
 
Other assets - private equity funds
30,902,000 
25,436,000 
 
 
Liabilities [Abstract]
 
 
 
 
Certificates of deposit
 
27,414,000 
 
 
Derivative contracts
236,522,000 2
215,420,000 2
 
 
Fair Value, Measurements, Recurring [Member] |
Fair Value, Inputs, Level 1 [Member]
 
 
 
 
Assets [Abstract]
 
 
 
 
Trading securities
0 
877,000 
 
 
Available for sale securities [Abstract]
 
 
 
 
U.S. Treasury
1,006,000 
 
 
 
Municipal and other tax-exempt
0 
0 
 
 
U.S. agency residential mortgage-backed securities
0 
0 
 
 
Private issue residential mortgage-backed securities
0 
0 
 
 
Other debt securities
0 
0 
 
 
Perpetual preferred stock
0 
0 
 
 
Equity securities and mutual funds
23,596,000 
22,344,000 
 
 
Total available for sale securities
24,602,000 
22,344,000 
 
 
Mortgage trading securities
 
0 
 
 
Residential mortgage loans held for sale
0 
0 
 
 
Mortgage servicing rights
0 
0 
 
 
Derivative contracts, assets
457,000 2
0 2
 
 
Other assets - private equity funds
0 
0 
 
 
Liabilities [Abstract]
 
 
 
 
Certificates of deposit
 
0 
 
 
Derivative contracts
0 2
0 2
 
 
Fair Value, Measurements, Recurring [Member] |
Fair Value, Inputs, Level 2 [Member]
 
 
 
 
Assets [Abstract]
 
 
 
 
Trading securities
76,623,000 
54,590,000 
 
 
Available for sale securities [Abstract]
 
 
 
 
U.S. Treasury
0 
 
 
 
Municipal and other tax-exempt
26,484,000 
25,849,000 
 
 
U.S. agency residential mortgage-backed securities
9,588,177,000 
8,446,908,000 
 
 
Private issue residential mortgage-backed securities
419,166,000 
644,210,000 
 
 
Other debt securities
30,595,000 
1,000 
 
 
Perpetual preferred stock
18,446,000 
22,114,000 
 
 
Equity securities and mutual funds
23,642,000 
20,702,000 
 
 
Total available for sale securities
10,106,510,000 
9,159,784,000 
 
 
Mortgage trading securities
651,226,000 
428,021,000 
 
 
Residential mortgage loans held for sale
188,125,000 
263,413,000 
 
 
Mortgage servicing rights
 
0 
 
 
Derivative contracts, assets
293,402,000 2
270,445,000 2
 
 
Other assets - private equity funds
0 
0 
 
 
Liabilities [Abstract]
 
 
 
 
Certificates of deposit
 
27,414,000 
 
 
Derivative contracts
236,522,000 2
215,420,000 2
 
 
Fair Value, Measurements, Recurring [Member] |
Fair Value, Inputs, Level 3 [Member]
 
 
 
 
Assets [Abstract]
 
 
 
 
Trading securities
177,000 
0 
 
 
Available for sale securities [Abstract]
 
 
 
 
U.S. Treasury
0 
 
 
 
Municipal and other tax-exempt
42,353,000 
47,093,000 
 
 
U.S. agency residential mortgage-backed securities
0 
0 
 
 
Private issue residential mortgage-backed securities
0 
0 
 
 
Other debt securities
5,900,000 
6,400,000 
 
 
Perpetual preferred stock
0 
0 
 
 
Equity securities and mutual funds
0 
0 
 
 
Total available for sale securities
48,253,000 
53,493,000 
 
 
Mortgage trading securities
0 
0 
 
 
Residential mortgage loans held for sale
0 
0 
 
 
Mortgage servicing rights
86,783,000 3
115,723,000 3
 
 
Derivative contracts, assets
0 2
0 2
 
 
Other assets - private equity funds
30,902,000 
25,436,000 
 
 
Liabilities [Abstract]
 
 
 
 
Certificates of deposit
 
0 
 
 
Derivative contracts
$ 0 2
$ 0 2
 
 
Fair Value Measurements, Measured On A Recurring and Nonrecurring Basis (Details) (USD $)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Other cost and expenses, fair value changes [Abstract]
 
 
 
Fair value of certificate of deposits
 
$ 27,000,000 
 
Contractual principal amount of certificate of deposit
 
27,000,000 
 
Change in fair value of certificate of deposit
 
1,200,000 
7,900,000 
Projected period for income growth on each reporting units (in years)
5Y 
 
 
Average expected long-term growth rate
10.00% 
11.00% 
 
Volatility factor for BOKF common stock
0.90% 
0.75% 
 
Discount rate
13.03% 
11.73% 
 
Market risk premium
12.34% 
12.26% 
 
Other Operating Expense [Member] |
Impaired Loans [Member]
 
 
 
Other cost and expenses, fair value changes [Abstract]
 
 
 
Gross charge-offs against allowance for loan losses
13,829,000 
51,058,000 
 
Gross charge-offs against allowance for recourse loans
1,368,000 
265,000 
 
Net losses and expenses of repossessed assets, net
0 
0 
 
Other expenses
 
0 
 
Other Operating Expense [Member] |
Real Estate and Other Repossessed Assets [Member]
 
 
 
Other cost and expenses, fair value changes [Abstract]
 
 
 
Gross charge-offs against allowance for loan losses
0 
0 
 
Gross charge-offs against allowance for recourse loans
0 
0 
 
Net losses and expenses of repossessed assets, net
14,077,000 
25,020,000 
 
Other expenses
 
0 
 
Other Operating Expense [Member] |
Other Assets - Alternative Investments [Member]
 
 
 
Other cost and expenses, fair value changes [Abstract]
 
 
 
Gross charge-offs against allowance for loan losses
 
0 
 
Gross charge-offs against allowance for recourse loans
 
0 
 
Net losses and expenses of repossessed assets, net
 
0 
 
Other expenses
 
1,750,000 
 
Fair Value, Measurements, Nonrecurring [Member] |
Fair Value, Inputs, Level 1 [Member]
 
 
 
Assets, fair value disclosure [Abstract]
 
 
 
Impaired loans
0 
0 
 
Real estate and other repossessed assets
0 
0 
 
Other assets - alternative investments
 
0 
 
Fair Value, Measurements, Nonrecurring [Member] |
Fair Value, Inputs, Level 2 [Member]
 
 
 
Assets, fair value disclosure [Abstract]
 
 
 
Impaired loans
52,421,000 
77,665,000 
 
Real estate and other repossessed assets
57,160,000 
72,113,000 
 
Other assets - alternative investments
 
0 
 
Fair Value, Measurements, Nonrecurring [Member] |
Fair Value, Inputs, Level 3 [Member]
 
 
 
Assets, fair value disclosure [Abstract]
 
 
 
Impaired loans
1,447,000 
0 
 
Real estate and other repossessed assets
13,100,000 
1,607,000 
 
Other assets - alternative investments
 
3,910,000 
 
Trading Securities [Member]
 
 
 
Fair Value Assets Measured on Recurring Basis Unobservable Reconciliation [Roll Forward]
 
 
 
Balance at beginning of period
 
9,800,000 
 
Transfer from trading to available for sale
 
(13,090,000)
 
Purchases, sales, issuances and settlements, net
 
3,555,000 
 
Brokerage and trading revenue
 
(265,000)
 
Gain on securities, net
 
0 
 
Other-than-temporary impairment losses
 
0 
 
Other comprehensive income (loss)
 
0 
 
Balance at end of period
 
0 
 
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
47,093,000 
36,598,000 
 
Purchases and capital calls
7,520,000 
 
 
Transfer from trading to available for sale
 
12,990,000 
 
Purchases, sales, issuances and settlements, net
 
(1,468,000)
 
Redemptions and distributions
(10,625,000)
 
 
Brokerage and trading revenue
(576,000)
0 
 
Gain on other assets, net
0 
0 
 
Gain on securities, net
21,000 
7,000 
 
Other-than-temporary impairment losses
(1,558,000)
(1,019,000)
 
Other comprehensive income (loss)
478,000 
(15,000)
 
Balance at end of period
42,353,000 
47,093,000 
 
Available-for-sale Securities [Member] |
Other Debt Obligations [Member]
 
 
 
Fair Value Assets Measured on Recurring Basis Unobservable Reconciliation [Roll Forward]
 
 
 
Balance at beginning of period
6,400,000 
17,116,000 
 
Purchases and capital calls
0 
 
 
Transfer from trading to available for sale
 
100,000 
 
Purchases, sales, issuances and settlements, net
 
(11,081,000)
 
Redemptions and distributions
(500,000)
 
 
Brokerage and trading revenue
0 
0 
 
Gain on other assets, net
0 
0 
 
Gain on securities, net
0 
259,000 
 
Other-than-temporary impairment losses
0 
0 
 
Other comprehensive income (loss)
0 
6,000 
 
Balance at end of period
5,900,000 
6,400,000 
 
Other Assets [Member] |
Private Equity Funds [Member]
 
 
 
Fair Value Assets Measured on Recurring Basis Unobservable Reconciliation [Roll Forward]
 
 
 
Balance at beginning of period
25,436,000 
22,917,000 
 
Purchases and capital calls
4,053,000 
 
 
Transfer from trading to available for sale
 
0 
 
Purchases, sales, issuances and settlements, net
 
2,479,000 
 
Redemptions and distributions
(3,903,000)
 
 
Brokerage and trading revenue
0 
0 
 
Gain on other assets, net
5,317,000 
40,000 
 
Gain on securities, net
0 
0 
 
Other-than-temporary impairment losses
0 
 
 
Other comprehensive income (loss)
0 
0 
 
Balance at end of period
$ 30,902,000 
$ 25,436,000 
 
Parent Company Only Financial Statements (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Assets [Abstract]
 
 
 
 
Cash and cash equivalents
$ 986,365 
$ 1,269,404 
$ 921,216 
 
Available for sale securities
10,179,365 
9,096,277 
 
 
Other assets
381,010 
316,965 
 
 
Total assets
25,493,946 
23,941,603 
 
 
Liabilities and Shareholders' Equity [Abstract]
 
 
 
 
Other liabilities
133,684 
191,431 
 
 
Total liabilities
22,707,294 
21,397,725 
 
 
Shareholders' equity: [Abstract]
 
 
 
 
Common stock
4 
4 
 
 
Capital surplus
818,817 
782,805 
 
 
Retained earnings
1,953,332 
1,743,880 
 
 
Treasury stock
150,664 
112,802 
 
 
Accumulated other comprehensive income
128,979 
107,839 
(10,740)
(222,886)
Total shareholders' equity
2,750,468 
2,521,726 
 
 
Total liabilities and shareholders' equity
25,493,946 
23,941,603 
 
 
Statements of Earnings [Abstract]
 
 
 
 
Other operating revenue
572,264 
520,908 
492,990 
 
Other-than-temporary impairments losses recognized in earnings
10,578 
29,960 
129,154 
 
Interest expense
120,101 
142,030 
204,205 
 
Professional fees and services
28,798 
30,217 
30,243 
 
Other operating expense
821,473 
753,170 
696,733 
 
Income before taxes
448,335 
371,651 
310,721 
 
Federal and state income tax expense (benefit)
158,511 
123,357 
106,705 
 
Equity in undistributed income of subsidiaries
(3,949)
(1,540)
(3,438)
 
Net income
285,875 
246,754 
200,578 
 
Cash flows from operating activities: [Abstract]
 
 
 
 
Net income
289,824 
248,294 
204,016 
 
Adjustments to reconcile net income to net cash provided by operating activities: [Abstract]
 
 
 
 
Tax (expense) benefit on exercise of stock options
(659)
(425)
276 
 
Change in other assets
(16,469)
(9,023)
166,487 
 
Change in other liabilities
(50,198)
59,037 
(7,571)
 
Net cash provided by operating activities
327,788 
365,178 
253,592 
 
Cash flows from investing activities: [Abstract]
 
 
 
 
Purchases of available for sale securities
(7,504,261)
(5,565,931)
(6,966,218)
 
Sales and maturities of held-to-maturity and available for sale securities
 
0 
0 
 
Net cash provided by (used in) investing activities
(1,564,144)
42,661 
(323,338)
 
Cash flows from financing activities: [Abstract]
 
 
 
 
Issuance of common and treasury stock, net
14,541 
8,552 
5,198 
 
Dividends paid
(76,423)
(66,557)
(63,952)
 
Repurchase of common stock
(26,446)
0 
0 
 
Net cash provided by (used in) financing activities
953,317 
(59,651)
296,020 
 
Net increase (decrease) in cash and cash equivalents
(283,039)
348,188 
226,274 
 
Cash and cash equivalents at beginning of period
1,269,404 
921,216 
694,942 
 
Cash and cash equivalents at end of period
986,365 
1,269,404 
921,216 
 
Cash paid for interest
122,166 
144,095 
230,841 
 
Parent Company Only [Member]
 
 
 
 
Assets [Abstract]
 
 
 
 
Cash and cash equivalents
386,695 
207,453 
19,088 
 
Available for sale securities
40,766 
59,115 
 
 
Investment in subsidiaries
2,317,900 
2,255,222 
 
 
Other assets
8,682 
25,846 
 
 
Total assets
2,754,043 
2,547,636 
 
 
Liabilities and Shareholders' Equity [Abstract]
 
 
 
 
Other liabilities
3,575 
25,910 
 
 
Total liabilities
3,575 
25,910 
 
 
Shareholders' equity: [Abstract]
 
 
 
 
Common stock
4 
4 
 
 
Capital surplus
818,817 
782,805 
 
 
Retained earnings
1,953,332 
1,743,880 
 
 
Treasury stock
(150,664)
(112,802)
 
 
Accumulated other comprehensive income
128,979 
107,839 
 
 
Total shareholders' equity
2,750,468 
2,521,726 
 
 
Total liabilities and shareholders' equity
2,754,043 
2,547,636 
 
 
Statements of Earnings [Abstract]
 
 
 
 
Dividends, interest and fees received from subsidiaries
270,474 
280,125 
172,023 
 
Other operating revenue
2,128 
1,883 
674 
 
Other-than-temporary impairments losses recognized in earnings
(2,098)
(1,679)
0 
 
Total revenue
270,504 
280,329 
172,697 
 
Interest expense
354 
507 
581 
 
Professional fees and services
538 
795 
0 
 
Other operating expense
7,688 
(47)
0 
 
Total expense
8,580 
1,255 
581 
 
Income before taxes
261,924 
279,074 
172,116 
 
Federal and state income tax expense (benefit)
(3,169)
415 
738 
 
Income before equity in undistributed income of subsidiaries
265,093 
278,659 
171,378 
 
Equity in undistributed income of subsidiaries
20,782 
(31,905)
29,200 
 
Net income
285,875 
246,754 
200,578 
 
Cash flows from operating activities: [Abstract]
 
 
 
 
Net income
285,875 
246,754 
200,578 
 
Adjustments to reconcile net income to net cash provided by operating activities: [Abstract]
 
 
 
 
Equity in undistributed income of subsidiaries
(20,782)
31,905 
(29,200)
 
Tax (expense) benefit on exercise of stock options
659 
(425)
(276)
 
Change in other assets
15,249 
20,713 
(47,732)
 
Change in other liabilities
(18,884)
(20,216)
47,333 
 
Net cash provided by operating activities
262,117 
278,731 
170,703 
 
Cash flows from investing activities: [Abstract]
 
 
 
 
Purchases of available for sale securities
(3,797)
(10,669)
(36,685)
 
Sales and maturities of held-to-maturity and available for sale securities
16,500 
 
 
 
Investment in subsidiaries
(7,250)
(21,692)
(26,500)
 
Net cash provided by (used in) investing activities
5,453 
(32,361)
(63,185)
 
Cash flows from financing activities: [Abstract]
 
 
 
 
Net change in other borrowings
0 
0 
(50,000)
 
Issuance of common and treasury stock, net
14,541 
8,552 
5,198 
 
Dividends paid
(76,423)
(66,557)
(63,952)
 
Repurchase of common stock
(26,446)
0 
0 
 
Net cash provided by (used in) financing activities
(88,328)
(58,005)
(108,754)
 
Net increase (decrease) in cash and cash equivalents
179,242 
188,365 
(1,236)
 
Cash and cash equivalents at beginning of period
207,453 
19,088 
20,324 
 
Cash and cash equivalents at end of period
386,695 
207,453 
19,088 
 
Cash paid for interest
$ 354 
$ 507 
$ 589