Consolidated Statements of Earnings (Unaudited) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
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| Interest revenue [Abstract] | ||||
| Loans | $ 453,779 | $ 425,662 | $ 1,339,570 | $ 1,192,714 |
| Residential mortgage loans held for sale | 1,495 | 1,234 | 3,766 | 3,305 |
| Trading securities | 76,419 | 65,221 | 219,457 | 147,051 |
| Investment securities | 7,381 | 8,276 | 22,774 | 25,790 |
| Available-for-sale securities | 125,490 | 99,124 | 362,806 | 282,449 |
| Fair value option securities | 189 | 552 | 578 | 7,561 |
| Restricted equity securities | 8,426 | 8,776 | 26,476 | 21,013 |
| Interest-bearing cash and cash equivalents | 7,131 | 8,199 | 21,912 | 24,257 |
| Total interest revenue | 680,310 | 617,044 | 1,997,339 | 1,704,140 |
| Interest expense [Abstract] | ||||
| Deposits | 271,128 | 184,808 | 768,005 | 416,748 |
| Borrowed funds | 98,706 | 129,019 | 324,647 | 305,278 |
| Subordinated debentures | 2,357 | 2,321 | 6,975 | 6,609 |
| Total interest expense | 372,191 | 316,148 | 1,099,627 | 728,635 |
| Net interest income | 308,119 | 300,896 | 897,712 | 975,505 |
| Provision for credit losses | 2,000 | 7,000 | 18,000 | 40,000 |
| Net interest income after provision for credit losses | 306,119 | 293,896 | 879,712 | 935,505 |
| Total fees and commissions | 202,494 | 197,852 | 603,085 | 584,328 |
| Other gains, net | 13,087 | 1,474 | 74,731 | 16,343 |
| Gain (loss) on derivatives, net | 8,991 | (9,010) | (733) | (18,513) |
| Gain (loss) on fair value option securities, net | 764 | (203) | 365 | (5,323) |
| Change in fair value of mortgage servicing rights | (16,453) | 8,039 | (2,023) | 11,241 |
| Loss on available-for-sale securities, net | (691) | 0 | (45,828) | (3,010) |
| Total other operating revenue | 208,192 | 198,152 | 629,597 | 585,066 |
| Noninterest Expense [Abstract] | ||||
| Personnel | 206,821 | 190,791 | 600,564 | 563,588 |
| Business promotion | 7,681 | 6,958 | 23,909 | 23,167 |
| Charitable contributions to BOKF Foundation | 0 | 23 | 13,610 | 1,165 |
| Professional fees and services | 13,405 | 13,224 | 38,746 | 39,049 |
| Net occupancy and equipment | 32,077 | 32,583 | 92,615 | 91,147 |
| FDIC and other insurance | 8,186 | 7,996 | 24,243 | 22,285 |
| FDIC special assessment | (1,437) | 0 | 6,207 | 0 |
| Data processing and communications | 47,554 | 45,672 | 139,249 | 135,781 |
| Printing, postage, and supplies | 3,594 | 3,760 | 11,380 | 11,381 |
| Amortization of intangible assets | 2,856 | 3,474 | 8,757 | 10,339 |
| Mortgage banking costs | 9,059 | 8,357 | 23,946 | 22,439 |
| Other expense | 11,229 | 11,475 | 34,873 | 28,457 |
| Total other operating expense | 341,025 | 324,313 | 1,018,099 | 948,798 |
| Net income before taxes | 173,286 | 167,735 | 491,210 | 571,773 |
| Federal and state income taxes | 33,313 | 33,256 | 103,811 | 123,162 |
| Net income | 139,973 | 134,479 | 387,399 | 448,611 |
| Net income attributable to non-controlling interests | (26) | (16) | (16) | 440 |
| Net income attributable to BOK Financial Corporation shareholders | $ 139,999 | $ 134,495 | $ 387,415 | $ 448,171 |
| Earnings Per Share [Abstract] | ||||
| Basic | $ 2.18 | $ 2.04 | $ 6.01 | $ 6.74 |
| Diluted | $ 2.18 | $ 2.04 | $ 6.01 | $ 6.74 |
| Average shares used in computation: [Abstract] | ||||
| Basic | 63,489,581 | 65,548,307 | 63,830,188 | 65,955,294 |
| Diluted | 63,489,581 | 65,548,307 | 63,830,188 | 65,955,294 |
| Dividends declared per share | $ 0.55 | $ 0.54 | $ 1.65 | $ 1.62 |
| Brokerage and trading revenue [Member] | ||||
| Total fees and commissions | $ 50,391 | $ 62,312 | $ 162,587 | $ 179,714 |
| Transaction card revenue [Member] | ||||
| Total fees and commissions | 28,495 | 26,387 | 81,234 | 78,011 |
| Fiduciary and asset management revenue [Member] | ||||
| Total fees and commissions | 57,384 | 52,256 | 170,265 | 155,910 |
| Deposit service charges and fees [Member] | ||||
| Total fees and commissions | 30,450 | 27,676 | 88,707 | 80,744 |
| Mortgage banking revenue [Member] | ||||
| Total fees and commissions | 18,372 | 13,356 | 55,967 | 42,864 |
| Other revenue [Member] | ||||
| Total fees and commissions | $ 17,402 | $ 15,865 | $ 44,325 | $ 47,085 |
Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($) $ in Thousands |
Sep. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Investment securities [Abstract] | ||
| Investment Securities, Fair Value | $ 1,937,907 | $ 2,072,586 |
| Real estate and other repossessed assets, allowance | $ (5,359) | $ (5,355) |
| Shareholders' equity: [Abstract] | ||
| Common Stock, Par or Stated Value Per Share | $ 0.00006 | $ 0.00006 |
| Common Stock, Shares Authorized | 2,500,000,000 | 2,500,000,000 |
| Common Stock, Shares, Issued | (76,814,108) | (76,593,292) |
| Common Stock, Shares, Outstanding | (76,814,108) | (76,593,292) |
| Treasury stock, shares at cost (in shares) | 12,695,691 | 11,626,115 |
Significant Accounting Policies |
9 Months Ended |
|---|---|
Sep. 30, 2024 | |
| Accounting Policies [Abstract] | |
| Significant Accounting Policies [Text Block] | Significant Accounting Policies Basis of Presentation The accompanying unaudited consolidated financial statements of BOK Financial have been prepared in accordance with accounting principles for interim financial information generally accepted in the United States and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. The unaudited consolidated financial statements include accounts of BOK Financial and its subsidiaries, principally BOKF, NA, BOK Financial Securities, Inc., and BOK Financial Private Wealth, Inc. Operating divisions of BOKF, NA include Bank of Albuquerque, Bank of Oklahoma, Bank of Texas, BOK Financial in Arizona, Arkansas, Colorado, and Kansas/Missouri, BOK Financial Mortgage, and the TransFund electronic funds network. Certain reclassifications have been made to conform to the current period presentation. The financial information should be read in conjunction with BOK Financial's 2023 Form 10-K filed with the Securities and Exchange Commission, which contains audited financial statements. Amounts presented as of December 31, 2023, have been derived from the audited financial statements included in BOK Financial's 2023 Form 10-K but do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. Operating results for the three and nine-month periods ended September 30, 2024, are not necessarily indicative of the results that may be expected for the year ending December 31, 2024. Newly Adopted and Pending Accounting Policies Financial Accounting Standards Board FASB ASU 2023-01, Leases (Topic 842): Common Control Arrangements On March 27, 2023, the FASB issued ASU 2023-01 which, in part, amends the accounting for leasehold improvement in common-control arrangements. Under previous guidance, a lessee is generally required to amortize leasehold improvements that it owns over the shorter of the useful life of those improvements or the lease term. However, due to the nature of leasehold improvements made under leases between entities under common control, ASU 2023-01 requires a lessee in a common-control arrangement to amortize such leasehold improvements that it owns over the improvements' useful life to the common control group, regardless of the lease term. ASU 2023-01 is effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Adoption of ASU 2023-01 did not have a material impact on the Company's financial statements. FASB ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures The FASB issued ASU 2023-07 on November 27, 2023, which is intended to improve reportable segment disclosure requirements. Under previous guidance, while entities were required to disclose segment revenue and measure of profit or loss, there has been limited disclosure around the reporting of segment expenses. In addition to enhanced disclosures about significant segment expenses, the amendments enhance interim disclosure requirements, clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, provide new segment disclosure requirements for entities with a single reportable segment, and contain other disclosure requirements. The purpose of the amendments is to enable investors to better understand an entity’s overall performance and assess potential future cash flows. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The Company is evaluating the requirements of the expanded segment disclosures. FASB ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures The FASB issued ASU 2023-09 on December 14, 2023, which amends income tax disclosures to provide information to better assess how an entity’s operations and related tax risks and tax planning and operational opportunities affect its tax rate and prospects for future cash flows. The new guidance requires the entity to disclose specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. ASU 2023-09 is effective for annual periods beginning after December 15, 2024. The Company is currently assessing the impact ASU 2023-09 will have on its income tax disclosures. FASB ASU 2024-01, Compensation—Stock Compensation (Topic 718): Scope Application of Profits Interest and Similar Awards The FASB issued ASU 2024-01 on March 21, 2024, which provides illustrative guidance to help entities determine whether profits interest and similar awards should be accounted for as share-based payment arrangements within the scope of Topic 718, Compensation—Stock Compensation. The ASU is effective for annual periods beginning after December 15, 2024, including interim periods within those periods. Adoption of ASU 2024-01 is not expected to have a material impact on the Company's financial statements.
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Securities |
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| Marketable Securities [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Securities [Text Block] | Securities Trading Securities The fair value and net unrealized gain (loss) included in trading securities are as follows (in thousands):
Investment Securities The amortized cost and fair values of investment securities are as follows (in thousands):
1 Carrying value includes $129 million of net unrealized loss which remains in AOCI in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available-for-sale securities portfolio to the investment securities portfolio.
1 Carrying value includes $165 million of net unrealized loss which remains in AOCI in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available-for-sale securities portfolio to the investment securities portfolio. The amortized cost and fair values of investment securities at September 30, 2024, by contractual maturity, are as shown in the following table (dollars in thousands):
1Expected maturities may differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without penalty. 2The average expected lives of residential mortgage-backed securities were 4.6 years based upon current prepayment assumptions. Temporarily Impaired Investment Securities (dollars in thousands):
Available-for-Sale Securities The amortized cost and fair value of available-for-sale securities are as follows (in thousands):
The amortized cost and fair values of available-for-sale securities at September 30, 2024, by contractual maturity, are as shown in the following table (dollars in thousands):
1Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalty. 2The average expected lives of residential mortgage-backed securities were 3.9 years based upon current prepayment assumptions. Sales of available-for-sale securities resulted in gains and losses as follows (in thousands):
The fair value of debt securities pledged as collateral for repurchase agreements, public trust funds on deposit, and for other purposes, as required by law, was $10.5 billion at September 30, 2024 and $13.9 billion at December 31, 2023. The secured parties do not have the right to sell or repledge these securities. Temporarily Impaired Available-for-Sale Securities (Dollars in thousands)
Based on evaluations of impaired securities as of September 30, 2024, the Company does not intend to sell any impaired available-for-sale debt securities before fair value recovers to the current amortized cost, and it is more-likely-than-not that the Company will not be required to sell impaired securities before fair value recovers, which may be maturity. Fair Value Option Securities Fair value option securities represent securities which the Company has elected to carry at fair value and are separately identified on the Consolidated Balance Sheets. Changes in the fair value are recognized in earnings as they occur. Certain securities are held as an economic hedge of the mortgage servicing rights. The fair value and net unrealized gain (loss) included in fair value option securities is as follows (in thousands):
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Derivatives |
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| Derivative Instrument Detail [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Derivatives [Text Block] | Derivatives Derivative instruments may be used by the Company as part of its internal risk management programs or may be offered to customers. All derivative instruments are carried at fair value, and changes in fair value are reported in earnings as they occur. Credit risk is also considered in determining fair value. Deterioration in the credit rating of customer or other counterparties reduce the fair value of asset contracts. Deterioration of our credit rating could decrease the fair value of our derivative liabilities. When bilateral netting agreements or similar arrangements exist between the Company and its counterparties that create a single legal claim or obligation to pay or receive the net amount in settlement of the individual derivative contracts, the Company reports derivative assets and liabilities on a net by derivative contract type by counterparty basis. Derivative contracts may require the Company to provide or receive cash margin as collateral for derivative assets and liabilities. Derivative assets and liabilities are reported net of cash margin when certain conditions are met. In addition, derivative contracts executed with customers under Customer Risk Management Programs may be secured by non-cash collateral in conjunction with a credit agreement with that customer. Access to collateral in the event of default is reasonably assured. None of these derivative contracts have been designated as hedging instruments for accounting purposes. Customer Risk Management Programs BOK Financial offers programs to permit its customers to manage various risks, including fluctuations in energy, interest rates, foreign exchange rates, and other commodities with derivative contracts. Customers may also manage interest rate risk through interest rate swaps used by borrowers to modify interest rate terms of their loans. Derivative contracts are executed between the customers and BOK Financial. Offsetting contracts are executed between BOK Financial and other selected counterparties to minimize the 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. Trading BOK Financial may offer derivative instruments such as to-be-announced securities to mortgage banking customers to enable them to manage their market risk or to mitigate the Company's market risk of holding trading securities. Changes in the fair value of derivative instruments for trading purposes or used to mitigate the market risk of holding trading securities are included in Other operating revenue – Brokerage and trading revenue in the Consolidated Statements of Earnings. Internal Risk Management Programs BOK Financial may use derivative contracts in managing its interest rate sensitivity, as part of its economic hedge of the change in the fair value of mortgage servicing rights. Changes in the fair value of derivative instruments used in managing interest rate sensitivity and as part of the economic hedge of changes in the fair value of mortgage servicing rights are included in Other operating revenue – Gain (loss) on derivatives, net in the Consolidated Statements of Earnings. As discussed in Note 5, certain derivative contracts not designated as hedging instruments related to mortgage loan commitments and forward sales contracts are included in Residential mortgage loans held for sale on the Consolidated Balance Sheets. See Note 5 for additional discussion of notional, fair value, and impact on earnings of these contracts. The following table summarizes the fair values of derivative contracts recorded as "derivative contracts" assets and liabilities in the balance sheet at September 30, 2024 (in thousands):
1 Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract. The following table summarizes the fair values of derivative contracts recorded as "derivative contracts" assets and liabilities in the balance sheet at December 31, 2023 (in thousands):
1 Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract. The following summarizes the pre-tax net gains (losses) on derivative instruments and where they are recorded in the income statement (in thousands):
1 Represents changes in fair value of to-be-announced securities and other derivative instruments held to mitigate market risk of trading securities portfolio, which is offset by changes in fair value of trading securities also included in Brokerage and Trading Revenue in the Consolidated Statements of Earnings.
1 Represents changes in fair value of to-be-announced securities and other derivative instruments held to mitigate market risk of trading securities portfolio, which is offset by changes in fair value of trading securities also included in Brokerage and Trading Revenue in the Consolidated Statements of Earnings.
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Loans and Allowances for Credit Losses |
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| Loans and Leases Receivable, Net Amount [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Loans [Text Block] | Loans and Allowances for Credit Losses Loans Loans are either secured or unsecured based on the type of loan and the financial condition of the borrower. Repayment is generally expected from cash flow or proceeds from the sale of selected assets of the borrower. BOK Financial is exposed to risk of loss on loans due to the borrower's difficulties, which may arise from any number of factors, including problems within the respective industry or local economic conditions. Access to collateral, in the event of borrower default, is reasonably assured through adherence to applicable lending laws and through sound lending standards and credit review procedures. Accounting policies for all loans, excluding residential mortgage loans guaranteed by U.S. government agencies, are as follows. Interest is accrued at the applicable interest rate on the principal amount outstanding. Loans are placed on nonaccruing status when, in the opinion of management, full collection of principal or interest is uncertain. Internally risk graded loans are individually evaluated for nonaccruing status quarterly. Non-risk graded loans are generally placed on nonaccruing status when more than 90 days past due or within 60 days of being notified of the borrower's bankruptcy filing. Interest previously accrued but not collected is charged against interest income when the loan is placed on nonaccruing status. Accrued but not paid interest receivable is included in Receivables in the Consolidated Balance Sheets. Payments on nonaccruing loans are applied to principal or recognized as interest income, according to management's judgment as to the collectability of principal. Loans may be returned to accruing status when, in the opinion of management, full collection of principal and interest, including principal previously charged off, is probable based on improvements in the borrower's financial condition or a sustained period of performance. For loans acquired with no evidence of credit deterioration, discounts are accreted on either an individual basis for loans with unique characteristics or on a pool basis for groups of homogeneous loans. Accretion is discontinued when a loan with an individually attributed discount is placed on nonaccruing status. Modifications of loans to existing borrowers generally consist of interest rate reductions, extension of payment terms, or a combination of these. Modifications may arise either voluntarily through negotiations with the borrower or involuntarily through court order. Payment deferrals up to six months are generally considered to be short-term modifications. Generally, principal and accrued but unpaid interest are not voluntarily forgiven. A change to the allowance for credit losses is generally not recorded upon modification because the effect of most modifications made to borrowers experiencing financial difficulty is already included in the allowance methodology. Performing loans may be renewed under the current collateral value, debt service ratio, and other underwriting standards. Nonaccruing loans may be renewed and will remain classified as nonaccruing. Occasionally, loans, other than residential mortgage loans, may be held for sale in order to manage credit concentration. These loans are carried at the lower of cost or fair value with gains or losses recognized in Other gains (losses), net in the Consolidated Statements of Earnings. All loans are charged off when the loan balance or a portion of the loan balance is no longer supported by the paying capacity of the borrower or when the required cash flow is reduced in a modification. The charge-off amount is determined through a quarterly evaluation of available cash resources and collateral values. 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 type, are charged off. Loans to borrowers whose personal obligation has been discharged through Chapter 7 bankruptcy proceedings are charged off within 60 days of notice of the bankruptcy filing, regardless of payment status. Loan origination and commitment fees and direct loan acquisition and origination costs are deferred and amortized as an adjustment to yield over the life of the loan or over the commitment period, as applicable. Amortization does not anticipate loan prepayments. Net unamortized fees are recognized in full at time of payoff. Qualifying residential mortgage loans guaranteed by U.S. government agencies have been sold into GNMA pools. Under certain performance conditions specified in government programs, the Company may have the right, but not the obligation to repurchase loans from GNMA pools. These loans no longer qualify for sale accounting and are recognized in the Consolidated Balance Sheets. We do not expect to receive all principal and interest based on the loan's contractual terms. A portion of the principal balance continues to be guaranteed; however, interest accrues at a curtailed rate as specified in the programs. The carrying value of these loans is reduced based on an estimate of the expected cash flows discounted at the original note rate plus a liquidity spread. Guaranteed loans may be modified in accordance with U.S. government agency guidelines. Interest continues to accrue based on the modified rate. Guaranteed loans may either be resold into GNMA pools after a performance period specified by the programs or foreclosed and conveyed to the guarantors. Loans are disaggregated into portfolio segments and further disaggregated into classes. The portfolio segment is the level at which the Company develops and documents a systematic method for determining its allowance for credit losses. Classes are a further disaggregation of portfolio segments based on the risk characteristics of the loans and the Company's method for monitoring and assessing credit risk. Portfolio segments of the loan portfolio are as follows (in thousands):
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 September 30, 2024, outstanding commitments totaled $14.6 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 September 30, 2024, outstanding standby letters of credit totaled $735 million. Allowances for Credit Losses and Accrual for Off-balance Sheet Credit Risk from Unfunded Loans Commitments The allowance for loan losses and accrual for off-balance sheet credit risk from unfunded loan commitments represent the portion of the amortized cost basis of loans that we do not expect to collect over the asset's contractual life, considering past events, current conditions, and reasonable and supportable forecasts of future economic conditions. The appropriateness of the allowance for credit losses, including industry and product adjustments, is assessed quarterly by a senior management Allowance Committee. This review is based on an ongoing evaluation of the estimated expected credit losses in the portfolio and on unused commitments to provide financing. A well-documented methodology has been developed and is applied by an independent Credit Administration department to assure consistency across the Company. The allowance for loan losses consists of specific allowances attributed to certain individual loans, generally nonaccruing loans, with dissimilar risk characteristics that have not yet been charged down to amounts we expect to recover and general allowances for estimated credit losses on pools of loans that share similar risk characteristics. When full collection of principal or interest is uncertain, the loan's risk characteristics have changed and we exclude the loan from the general allowance pool, typically designating it as nonaccruing. For these loans, a specific allowance reflects the expected credit loss. We measure specific allowances for loans excluded from the general allowance pool by an evaluation of estimated future cash flows discounted at the loan's initial effective interest rate or the fair value of collateral for certain collateral dependent loans. For a non-collateral dependent loan, the specific allowance is the amount by which the loan's amortized cost basis exceeds its net realizable value. We measure the specific allowance for collateral dependent loans as the amount by which the loan's amortized cost basis exceeds its fair value. When repayment is expected to be provided substantially through the sale of collateral, we deduct estimated selling costs from the collateral's fair value. Generally, for real property held as collateral for loans, third-party appraisals that conform to Uniform Standards of Professional Appraisal Practice serve as the basis for the fair value of real property held as collateral. These appraised values are on an "as-is" basis and generally are not adjusted by the Company. We obtain updated appraisals at least annually or more frequently if market conditions indicate collateral values may have declined. For energy loans, our internal staff of engineers generally determines collateral value of mineral rights based on projected cash flows from proven oil and gas reserves under existing economic and operating conditions. For real property held as collateral for other loans, third-party appraisals that conform to Uniform Standards of Professional Appraisal Practice generally serve as the basis for the fair value. These appraised values are on an "as-is" basis and generally are not adjusted by the Company. We obtain updated appraisals at least annually or more frequently if market conditions indicate collateral values may have declined. Our special assets staff generally determines the value of other collateral based on projected liquidation cash flows under current market conditions. We evaluate collateral values and available cash resources quarterly. Historical statistics may be used to estimate specific allowances in limited situations, such as when a collateral dependent loan is removed from the general allowance pool near the end of a reporting period until an appraisal of collateral value is received or a full assessment of future cash flows is completed. General allowances estimate expected credit losses on pools of loans sharing similar risk characteristics that are expected to occur over the loan's estimated remaining life. The loan's estimated remaining life represents the contractual term adjusted for amortization, estimates of prepayments, and borrower-owned extension options. Approximately 90% of the committed dollars in the loan portfolio is risk graded loans with general allowance model inputs that include probability of default, loss given default, and exposure at default. Probability of default is based on the migration of loans from performing to nonperforming using historical life of loan analysis periods. Loss given default is based on the aggregate losses incurred, net of estimated recoveries. Exposure at default represents an estimate of the outstanding amount of credit exposure at the time a default may occur. Charge-off migration is used to calculate the general allowance for the majority of non-risk graded loans to individuals. The expected credit loss on less than 10% of the committed dollars in the portfolio is calculated using charge-off migration. The expected credit loss on approximately 1% of the committed dollars in the portfolio is calculated using a non-modeled approach. Specifically, the calculation applies a long-term net charge-off rate to the loan balances, adjusted for the weighted average remaining maturity of each portfolio. In estimating the expected credit losses for general allowances on performing risk-graded loans, each portfolio class is assigned relevant economic loss drivers which best explain variations in portfolio net loss rates. The probability of default estimates for each portfolio class are adjusted for current and forecasted economic conditions. The result is applied to the exposure at default and loss given default to calculate the lifetime expected credit loss estimate. Selection of relevant economic loss drivers is re-evaluated periodically and involves statistical analysis as well as management judgment. The unemployment rate factors significantly in the allowance for loan losses calculation affecting commercial and loans to individuals segments. Other primary factors impacting the commercial portfolio include BBB corporate spreads, real gross domestic product growth rate, and energy commodity prices. The primary commercial real estate variables are vacancy rate and BBB corporate spreads. In addition to the unemployment rate, the forecast for loans to individuals is tied to a home price index. The forecasts may include regional economic factors when localized conditions diverge from national conditions. An Economic Forecast Committee, consisting of senior management with members largely independent of the allowance process, develops a twelve-month forward-looking forecast for the relevant economic loss drivers. Management develops these forecasts based on external data as well as a view of future economic conditions which may include adjustments for regional conditions. The forecast includes three economic scenarios and probability weights for each scenario. The base forecast represents management's view of the most likely outcome, while the downside forecast reflects reasonably possible worsening economic conditions, and the upside forecast projects reasonably possible improving conditions. At the end of the one-year reasonable and supportable forecast period, we transition from shorter-term expected losses to long-term loss averages for the loan's estimated remaining life. The difference between short-term loss forecasts and long-term loss averages is run-off over the reversion horizon, up to three years, depending on the forecasted economic scenarios. General allowances also consider the estimated impact of factors that are not captured in the modeled results or historical experience. These factors may increase or decrease modeled results by amounts determined by the Allowance Committee. Factors not captured in modeled results or historical experience may include for example, new lines of business, market conditions that have not been previously encountered, observed changes in credit risk that are not yet reflected in macro-economic factors, or economic conditions that impact loss given default assumptions. The accrual for off-balance sheet credit risk is maintained at a level that is appropriate to cover estimated losses associated with credit instruments that are not currently recognized as assets such as loan commitments, standby letters of credit, or guarantees that are not unconditionally cancelable by the bank. This accrual is included in other liabilities in the Consolidated Balance Sheets. The appropriateness of the accrual is determined in the same manner as the allowance for loan losses, with the added consideration of commitment usage over the remaining life for those loans that the bank can not unconditionally cancel. A provision for credit losses is charged against or credited to earnings in amounts necessary to maintain an appropriate Allowance for Credit Losses. Recoveries of loans previously charged off are added to the allowance when received. The activity in the allowance for loan losses and the allowance for off-balance sheet credit losses related to loan commitments and standby letters of credit is summarized as follows (in thousands):
A $2.0 million provision for credit losses was necessary for the third quarter of 2024, reflecting continued strong credit quality, net loan paydowns, and relatively minor changes in economic forecast scenario assumptions. The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at September 30, 2024, is as follows (in thousands):
The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at December 31, 2023, is as follows (in thousands):
Credit Quality Indicators The Company utilizes risk grading as primary credit quality indicators as it influences the probability of default which is a key attribute in the expected credit losses calculation. Substantially all commercial as well as commercial real estate loans and certain loans to individuals are risk graded based on a quarterly evaluation of the borrowers' ability to repay the loans. Certain commercial loans and most loans to individuals are small, homogeneous pools that are not risk-graded. The credit quality of these loans is based on past due days in accordance with regulatory guidelines. We have included in the credit quality indicator "pass" loans that are in compliance with the original terms of the agreement and currently exhibit no factors that cause management to have doubts about the borrowers' ability to remain in compliance with the original terms of the agreement, which is consistent with the regulatory guideline of "pass." This also includes past due residential mortgages that are guaranteed by agencies of the U.S. government that continue to accrue interest based on criteria of the guarantors' programs. Other loans especially mentioned ("Special Mention") are currently performing in compliance with the original terms of the agreement but may have a potential weakness that deserves management's close attention, consistent with regulatory guidelines. Non-graded loans 30 to 59 days past due are categorized as Special Mention. The risk grading process identifies certain loans that have a well-defined weakness (for example, 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 remain on accruing status. Non-graded loans 60 to 89 days past due are categorized as Accruing Substandard. Nonaccruing loans represent loans for which full collection of principal and interest is uncertain. This includes certain loans considered "substandard" and all loans considered "doubtful" by regulatory guidelines. Non-graded loans 90 or more days past due are categorized as Nonaccrual. The probability of default is lowest for pass graded loans and increases for Special Mention and Accruing Substandard. Vintage represents the year of origination, except for revolving loans which are considered in aggregate. Loans that were once revolving but have converted to term loans without additional underwriting appear in a separate vintage column. The following table summarizes the Company’s loan portfolio at September 30, 2024, by the risk grade categories and vintage (in thousands):
1 Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due. The following table summarizes the Company's loan portfolio at December 31, 2023, by the risk grade categories and vintage (in thousands):
1 Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due. Nonaccruing Loans A summary of nonaccruing loans at September 30, 2024, follows (in thousands):
A summary of nonaccruing loans at December 31, 2023, follows (in thousands):
Loan Modifications to Borrowers Experiencing Financial Difficulty For the nine months ended September 30, 2024, the Company had $147 million of loan modifications to borrowers experiencing financial difficulty, including $90 million of healthcare loans and $43 million of energy loans. Modifications generally consist of interest rate reductions, an other than insignificant payment delay, term extension, or a combination. Approximately $141 million of the modifications are term extensions of commercial loans, and $5.9 million are combination modifications to residential mortgage loans guaranteed by U.S. government agencies. During the nine months ended September 30, 2024, $32 million of loans that were modified in the previous twelve months defaulted. Approximately $28 million of these defaults were related to term extensions of commercial loans, and $4.3 million of these defaults were related to combination modifications to residential mortgage loans guaranteed by U.S. government agencies. A payment default is defined as being 30 or more days past due after modification. For the nine months ended September 30, 2023, the Company had $136 million of loan modifications to borrowers experiencing financial difficulty, including $81 million of general business loans, $42 million of healthcare loans, and $12 million of residential mortgage loans guaranteed by U.S. government agencies. Approximately $97 million of the modifications are term extensions of healthcare and general business loans. Approximately $26 million and $12 million of the modifications are combination modifications to healthcare loans and residential mortgage loans guaranteed by U.S. government agencies, respectively. During the nine months ended September 30, 2023, $4.0 million of residential mortgage loans were modified and subsequently defaulted with nearly all of these being guaranteed by U.S. government agencies. Past Due Loans Past due status for all loan classes is based on the actual number of days since the last payment was due according to the contractual terms of the loans, as modified for short-term payment deferral forbearance. A summary of loans currently performing and past due as of September 30, 2024, is as follows (in thousands):
A summary of loans currently performing and past due as of December 31, 2023, is as follows (in thousands):
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Mortgage Banking Activities |
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| Mortgage Banking [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mortgage Banking Activities [Text Block] | Mortgage Banking Activities Residential Mortgage Loan Production The Company originates, markets, and services conventional and government-sponsored residential mortgage loans. Generally, conforming fixed-rate residential mortgage loans are held for sale in the secondary market, and non-conforming and adjustable-rate residential mortgage loans are retained for investment. Residential mortgage loans originated for sale by the Company are carried at fair value based on sales commitments and market quotes. Changes in the fair value of mortgage loans held for sale are included in Other operating revenue – Mortgage banking revenue. Residential mortgage loans held for sale also includes the fair value of residential mortgage loan commitments and forward sales commitments, which are considered derivative contracts that have not been designated as hedging instruments for accounting purposes. The volume of mortgage loans originated for sale and secondary market prices are the primary drivers of originating and marketing revenue. Residential mortgage loan commitments are generally outstanding for 60 to 90 days, which represents the typical period from commitment to originate a residential mortgage loan to when the closed loan is sold to an investor. Residential mortgage loan commitments are subject to both credit and interest rate risk. Credit risk is managed through underwriting policies and procedures, including collateral requirements, which are generally accepted by the secondary loan markets. Exposure to interest rate fluctuations is partially managed through forward sales of residential mortgage-backed securities and forward sales contracts. These latter contracts set the price for loans that will be delivered in the next 60 to 90 days. The unpaid principal balance of residential mortgage loans held for sale, notional amounts of derivative contracts related to residential mortgage 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):
No residential mortgage loans held for sale were 90 days or more past due or considered impaired as of September 30, 2024, or December 31, 2023. No credit losses were recognized on residential mortgage loans held for sale for the nine month period ended September 30, 2024, and 2023. Mortgage banking revenue was as follows (in thousands):
Production 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 for accounting purposes 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 originated or 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):
The following represents activity in capitalized mortgage servicing rights (in thousands):
Changes in the fair value of mortgage servicing rights due to market assumption changes are included in Other operating revenue in the Consolidated Statements of Earnings. Changes in fair value due to principal payments are included in Mortgage banking costs. Mortgage servicing rights are not traded in active markets. Fair value is determined by discounting the projected net cash flows. Significant market assumptions used to determine fair value based on significant unobservable inputs were as follows:
Changes in primary residential mortgage interest rates directly affect the prepayment speeds used in valuing our mortgage servicing rights. 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 periodically for changes in market conditions and adjusted to better correlate with actual performance of BOK Financial's servicing portfolio.
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Commitments and Contingent Liabilities |
9 Months Ended |
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Sep. 30, 2024 | |
| Commitments and Contingencies Disclosure [Abstract] | |
| Commitments and Contingencies Disclosure [Text Block] | Commitments and Contingent Liabilities Litigation Contingencies As a member of Visa, BOK Financial is obligated for a proportionate share of certain covered litigation losses incurred by Visa under a retrospective responsibility plan. A contingent liability was recognized for the Company’s share of Visa’s covered litigation liabilities. Visa funded an escrow account to cover litigation claims, including covered litigation losses under the retrospective responsibility plan, with proceeds from its initial public offering in 2008 and from available cash. On October 11, 2024, Visa announced that it had made an additional $1.5 billion deposit into the escrow fund. On January 23, 2024, Visa, Inc. stockholders approved an exchange offer which provided holders of Class B-1 shares an option to convert up to 50% of its Class B-1 shares to Visa Class C shares and subsequently to freely transferable Visa Class A common shares subject to certain restrictions and holding period requirements (the "Exchange Offer"). The Exchange Offer opened on April 8, 2024, and expired on May 3, 2024. The Company tendered all of its 252,233 Class B-1 Visa shares under the Exchange Offer and received 126,116 Visa Class B-2 shares and 50,053 Visa Class C commons shares in return. The Company sold 41,148 Visa Class C shares and donated 8,905 Visa Class C shares to the BOKF Foundation. Conversion of the Class B-1 shares did not reduce our proportionate share of the covered litigation losses which may dilute our remaining Class B-2 shares if the escrow fund is not adequate to cover final litigation costs. BOKF, NA is subject to litigation related to its role as Indenture Trustee for multiple municipal bonds to which Christopher Brogdon acted as borrower. The principal amount of the bonds remaining unpaid at this time is $33 million. Mr. Brogdon is obligated to pay the bonds in full by virtue of a Judgment in the USDC of New Jersey which allows the SEC to pursue collection to satisfy the Judgment, which the SEC continues to pursue. The remaining cases are (i) Robert Elliot & Marvin Loeb on behalf of a class of persons purchasing bonds in multiple municipal bond issuances v. BOKF, NA, USDC District of New Jersey, Case No. 2:16-cv-05218-KM-JBC (commenced 11/20/2015); and (ii) Burn Rose, LLC et al v. BOKF, NA d/b/a BOK, Tulsa County District Court Case, No. CJ-2016-03325 (commenced 9/22/2016). In the New Jersey Class Action and the Tulsa County Burn Rose action, the claimants allege that BOKF, NA was complicit in the fraud committed by Mr. Brogdon. BOKF, NA has multiple defenses to the claims, including the defense that it is exculpated by the terms of the various bond indentures. No action has been taken in the class action by the plaintiffs to establish the class and the amount of the damages, if any, cannot be reasonably estimated. Approximately $3 million is claimed as damages in the Burn Rose action. Management is advised that a loss on the claims in both the Class Action and the Burn Rose action is not probable. 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 invests in several tax credit entities and other funds as permitted by banking regulations. Consolidation of these investments is based on the variable interest model. At September 30, 2024, the Company had $ in interests in various alternative investments generally consisting of unconsolidated limited partnership interests in entities for which investment return is in the form of low income housing tax credits or other investments in merchant banking activities. These investments are recognized in Other assets on the Consolidated Balance Sheets. This investment balance also includes $106 million of unfunded commitments included in Other liabilities on the Consolidated Balance Sheets.
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Shareholders' Equity |
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| Stockholders' Equity Note [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholders' Equity [Text Block] | Shareholders' Equity On October 29, 2024, the Company declared a quarterly cash dividend of $0.57 per common share payable on or about November 27, 2024, to shareholders of record as of November 15, 2024. Dividends declared were $0.55 and $1.65 per share during the three and nine months ended September 30, 2024, and $0.54 and $1.62 per share during the three and nine months ended September 30, 2023. Accumulated Other Comprehensive Income (Loss) AOCI includes unrealized gains and losses on AFS securities. AOCI also includes unrealized losses on AFS securities that were transferred from AFS to investment securities in the second quarter of 2022. Such amounts are being amortized over the estimated remaining life of the security as an adjustment to yield, offsetting the related amortization of premium on the transferred securities. Gains and losses in AOCI are net of deferred income taxes. A rollforward of the components of accumulated other comprehensive income (loss) is included as follows (in thousands):
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Earnings Per Share |
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| Earnings Per Share [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Earnings Per Share [Text Block] | Earnings Per Share
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Reportable Segments |
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| Segment Reporting [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Reportable Segments [Text Block] | Reportable Segments Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended September 30, 2024, is as follows (in thousands):
Reportable segments reconciliation to the Consolidated Financial Statements for the nine months ended September 30, 2024, is as follows (in thousands):
Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended September 30, 2023, is as follows (in thousands):
Reportable segments reconciliation to the Consolidated Financial Statements for the nine months ended September 30, 2023, is as follows (in thousands):
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Fees and Commissions Revenue Fees and Commissions Revenue |
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| Revenue from Contract with Customer [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fees and Commissions Revenue [Text Block] | Fees and Commissions Revenue Fees and commissions revenue is generated through the sales of products, consisting primarily of financial instruments, and the performance of services for customers under contractual obligations. Revenue from providing services for customers is recognized at the time services are provided in an amount that reflects the consideration we expect to be entitled to for those services. Revenue is recognized based on the application of five steps: •Identify the contract with a customer •Identify the performance obligations in the contract •Determine the transaction price •Allocate the transaction price to the performance obligations in the contract •Recognize revenue when (or as) the Company satisfies a performance obligation For contracts with multiple performance obligations, individual performance obligations are accounted for separately if the customer can benefit from the good or service on its own or with other resources readily available to the customer, and the promise to transfer goods and services to the customer is separately identifiable in the contract. The transaction price is allocated to the performance obligations based on relative standalone selling prices. Revenue is recognized on a gross basis whenever we have primary responsibility and risk in providing the services or products to our customers and have discretion in establishing the price for the services or products. Revenue is recognized on a net basis whenever we act as an agent for products or services of others. Brokerage and trading revenue includes revenues from trading, customer hedging, retail brokerage, and investment banking. Trading revenue includes net realized and unrealized gains primarily related to sales of securities to institutional customers and related derivative contracts. Customer hedging revenue includes realized and unrealized changes in the fair value of derivative contracts held for customer risk management programs including credit valuation adjustments, as necessary. We offer commodity, interest rate, foreign exchange, and equity derivatives to our customers. These customer contracts are offset with contracts with selected counterparties and exchanges to minimize changes in market risk from changes in commodity prices, interest rates, or foreign exchange rates. Retail brokerage revenue represents fees and commissions earned on sales of fixed income securities, annuities, mutual funds, and other financial instruments to retail customers. Investment banking revenue includes fees earned upon completion of underwriting and financial advisory services. Investment banking revenue also includes fees earned in conjunction with loan syndications. Insurance brokerage revenues represents fees and commissions earned on placement of insurance products with carriers for property and casualty and health coverage. Transaction card revenue includes merchant discount fees and electronic funds transfer network fees, net of interchange fees paid to card issuers and assessments paid to card networks. Merchant discount fees represent fees paid by customers for account management and electronic processing of card 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 BOKF, NA. Electronic funds transfer fees are recognized as electronic transactions processed on behalf of its members. Fiduciary and asset management revenue includes fees 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 include commercial account service charges, overdraft fees, check card fee revenue and automated service charge, and other deposit service fees. Fees are recognized at least quarterly in accordance with published deposit account agreements and disclosure statements for retail accounts or contractual agreements 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. 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. Mortgage banking revenue includes revenues recognized in conjunction with the origination, marketing, and servicing of conventional and government-sponsored residential mortgage loans. Mortgage production revenue includes net realized gains (losses) on sales of residential mortgage loans in the secondary market and the net change in unrealized gains (losses) on residential mortgage loans held for sale. Mortgage production revenue also includes changes in the fair value of derivative contracts not designated as hedging instruments related to residential mortgage loan commitments and forward sales contracts. Mortgage servicing revenue includes servicing fee income and late charges on loans serviced for others. Fees and commissions revenue by reportable segment and primary service line is as follows for the three months ended September 30, 2024 (in thousands):
1 Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance. 2 In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers. Fees and commissions revenue by reportable segment and primary service line is as follows for the nine months ended September 30, 2024 (in thousands):
1 Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance. 2 In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers. Fees and commissions revenue by reportable segment and primary service line is as follows for the three months ended September 30, 2023 (in thousands):
1 Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance. 2 In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers. Fees and commissions revenue by reportable segment and primary service line is as follows for the nine months ended September 30, 2023 (in thousands):
1 Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance. 2 In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers.
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Fair Value Measurements |
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| Fair Value Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value Measurements [Text Block] | Fair Value Measurements Fair value is defined by applicable accounting guidance as the price to sell an asset or transfer a liability in an orderly transaction between market participants in the principal market for the given asset or liability at the measurement date based on market conditions at that date. An orderly transaction assumes exposure to the market for a customary period for marketing activities prior to the measurement date and not a forced liquidation or distressed sale. Certain assets and liabilities are recorded in the Company's financial statements at fair value. Some are recorded on a recurring basis and some on a non-recurring basis. For some assets and liabilities, observable market transactions and market information might be available. For other assets and liabilities, observable market transactions and market information might not be available. A hierarchy for fair value has been established which categorizes into three levels the inputs to valuation techniques used to measure fair value. The three levels are as follows: •Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) - Fair value is based on unadjusted quoted prices in active markets for identical assets or liabilities. •Significant Other Observable Inputs (Level 2) - Fair value is based on significant other observable inputs which are generally determined based on a single price for each financial instrument provided to us by an applicable third-party pricing service and is based on one or more of the following: •Quoted prices for similar, but not identical, assets or liabilities in active markets; •Quoted prices for identical or similar assets or liabilities in inactive markets; •Inputs other than quoted prices that are observable, such as interest rate and yield curves, volatilities, prepayment speeds, loss severities, credit risks, and default rates; •Other inputs derived from or corroborated by observable market inputs. •Significant Unobservable Inputs (Level 3) - Fair value is based upon model-based valuation techniques for which at least one significant assumption is not observable in the market. Transfers between levels are recognized as of the end of the reporting period. There were no transfers in or out of quoted prices in active markets for identical instruments to significant other observable inputs or significant unobservable inputs during the three and nine months ended September 30, 2024, and 2023, respectively. Transfers between significant other observable inputs and significant unobservable inputs during the three and nine months ended September 30, 2024, and 2023 were immaterial. The underlying methods used by the third-party pricing services are considered in determining the primary inputs used to determine fair values. Management has evaluated the methodologies employed by the third-party pricing services by comparing the price provided by the pricing service with other sources, including brokers' quotes, sales or purchases of similar instruments, and discounted cash flows to establish a basis for reliance on the pricing service values. Significant differences between the pricing service provided value and other sources are discussed with the pricing service to understand the basis for their values. Based on all observable inputs, management may adjust prices obtained from third-party pricing services to more appropriately reflect the prices that would be received to sell assets or paid to transfer liabilities in orderly transactions in the current market. No significant adjustments were made to prices provided by third-party pricing services at September 30, 2024, or December 31, 2023. Assets and Liabilities Measured at Fair Value on a Recurring Basis The fair value of financial assets and liabilities measured on a recurring basis was as follows as of September 30, 2024 (in thousands):
1Residential mortgage loans held for sale measured at fair value on a recurring basis using significant unobservable inputs (Level 3) consist of residential mortgage loans intended for sale to U.S. government agencies that fail to meet conforming standards and are valued at 82.54% of the unpaid principal balance. 2A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities. 3See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts in asset and liability positions that were valued based on quoted prices in active markets for identical instruments (Level 1) are primarily exchange-traded interest rate derivative contracts held for trading purposes. The fair value of financial assets and liabilities measured on a recurring basis was as follows as of December 31, 2023 (in thousands):
1Residential mortgage loans held for sale measured at fair value on a recurring basis using significant unobservable inputs (Level 3) consist of residential mortgage loans intended for sale to U.S. government agencies that fail to meet conforming standards and are valued at 77.74% of the unpaid principal balance. 2A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities. 3See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts in asset and liability positions that were valued based on quoted prices in active markets for identical instruments (Level 1) are primarily exchange-traded interest rate derivative contracts held for trading purposes. Following is a description of the Company's valuation methodologies used for assets and liabilities measured on a recurring basis: Securities The fair values of trading, available-for-sale, and fair value option securities are based on quoted prices for identical instruments in active markets, when available. If quoted prices for identical instruments are not available, fair values are based on significant other observable inputs such as quoted prices of comparable instruments or interest rates and credit spreads, yield curves, volatilities, prepayment speeds, and loss severities. The Company has elected to carry all residential mortgage-backed securities guaranteed by U.S. government agencies held as economic hedges against changes in the fair value of mortgage servicing rights at fair value with changes in the fair value recognized in earnings. 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 references to interest rate spreads on comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies adjusted for a lack of trading volume. Significant unobservable inputs are developed by investment securities professionals involved in the active trading of similar securities. A summary of significant inputs used to value these securities follows. A management committee composed of senior members from the Company's Corporate Treasury, Risk Management and Finance departments assesses the appropriateness of these inputs quarterly. 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 uses significant other observable market inputs. Credit risk is considered in determining the fair value of derivative instruments. Management determines fair value adjustments based on various risk factors including, but not limited to, current fair value, probability of default, and loss given default. We also consider our own credit risk in determining the fair value of derivative contracts. Changes in our credit rating would affect the fair value of our derivative liabilities. In the event of a credit downgrade, the fair value of our derivative liabilities would increase. Residential Mortgage Loans Held for Sale Residential mortgage loans held for sale are carried on the balance sheet at fair value. The Company has elected to carry all residential mortgage loans originated for sale at fair value. Changes in the fair value of these financial instruments are recognized in earnings. 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 and forward sales contracts. The fair value of mortgage loans that were unable to be sold to U.S. government agencies were determined using quoted prices of loans that are sold in securitization transactions with a liquidity discount applied. Fair Value of Assets and Liabilities Measured on a Non-Recurring Basis Assets measured at fair value on a non-recurring basis include collateral for certain nonaccruing loans and real property and other assets acquired to satisfy loans, which are based primarily on comparisons to completed sales of similar assets. The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at September 30, 2024, for which the fair value was adjusted during the nine months ended September 30, 2024 (in thousands):
The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at September 30, 2023, for which the fair value was adjusted during the nine months ended September 30, 2023 (in thousands):
The fair value of collateral-dependent nonaccruing loans secured by real estate and real estate and other repossessed assets and the related fair value adjustments are generally based on unadjusted third-party appraisals. Our appraisal review policies require appraised values to be supported by observed inputs derived principally from or corroborated by observable market data. Appraisals that are not based on observable inputs or that require significant adjustments or fair value measurements that are not based on third-party appraisals are considered to be based on significant unobservable inputs. Non-recurring fair value measurements of collateral-dependent nonaccruing loans and real estate and other repossessed assets based on significant unobservable inputs are generally due to estimates of current fair values between appraisal dates. Significant unobservable inputs include listing prices for the same or comparable assets, uncorroborated expert opinions, or management's knowledge of the collateral or industry. Non-recurring fair value measurements of collateral dependent loans secured by mineral rights are generally determined by our internal staff of engineers on projected cash flows under current market conditions and are based on significant unobservable inputs. Projected cash flows are discounted according to risk characteristics of the underlying oil and gas properties. Assets are evaluated to demonstrate with reasonable certainty that crude oil, natural gas, and natural gas liquids can be recovered from known oil and gas reservoirs under existing economic and operating conditions at current prices with existing conventional equipment, operating methods, and costs. Significant unobservable inputs are developed by asset management and workout professionals and approved by senior Credit Administration executives. A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of September 30, 2024, follows (dollars in thousands):
1 Represents fair value as a percentage of the unpaid principal balance. A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of September 30, 2023, follows (dollars in thousands):
1 Represents fair value as a percentage of the unpaid principal balance. 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 are measured at fair value on a non-recurring basis as of September 30, 2024 (in thousands):
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 are measured at fair value on a non-recurring basis as of December 31, 2023 (in thousands):
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.
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Subsequent Events |
9 Months Ended |
|---|---|
Sep. 30, 2024 | |
| Subsequent Events [Abstract] | |
| Subsequent Events [Text Block] | Subsequent Events The Company evaluated events from the date of the consolidated financial statements on September 30, 2024, through the issuance of those consolidated financial statements included in this Quarterly Report on Form 10-Q. No events were identified requiring recognition in and/or disclosure in the consolidated financial statements.
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Pay vs Performance Disclosure - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
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| Pay vs Performance Disclosure | ||||
| Net Income (Loss) Attributable to Parent | $ 139,999 | $ 134,495 | $ 387,415 | $ 448,171 |
Insider Trading Arrangements |
3 Months Ended |
|---|---|
Sep. 30, 2024 | |
| Trading Arrangements, by Individual | |
| Material Terms of Trading Arrangement | No Company director or officer (as defined in Exchange Act Rule 16a-1(f)) has adopted, modified or terminated any trading arrangements during the third quarter of 2024. Certain of our officers or directors have made elections to participate in, and are participating in, our dividend reinvestment plan and 401(k) plan, and have made, and may from time to time make, elections to have shares withheld to cover withholding taxes on issuances of shares to such officers or directors, which may be designed to satisfy the affirmative defense conditions of Rule 10b5-1 under the Exchange Act or may constitute non-Rule 10b5-1 trading arrangements (as defined in Item 408(c) of Regulation S-K).
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| Rule 10b5-1 Arrangement Adopted | false |
| Non-Rule 10b5-1 Arrangement Adopted | false |
| Rule 10b5-1 Arrangement Terminated | false |
| Non-Rule 10b5-1 Arrangement Terminated | false |
Significant Accounting Policies (Policies) |
9 Months Ended |
|---|---|
Sep. 30, 2024 | |
| Accounting Policies [Abstract] | |
| Basis of Accounting, Policy [Policy Text Block] | The accompanying unaudited consolidated financial statements of BOK Financial have been prepared in accordance with accounting principles for interim financial information generally accepted in the United States and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included.
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| Principles of Consolidation [Policy Text Block] | The unaudited consolidated financial statements include accounts of BOK Financial and its subsidiaries, principally BOKF, NA, BOK Financial Securities, Inc., and BOK Financial Private Wealth, Inc. Operating divisions of BOKF, NA include Bank of Albuquerque, Bank of Oklahoma, Bank of Texas, BOK Financial in Arizona, Arkansas, Colorado, and Kansas/Missouri, BOK Financial Mortgage, and the TransFund electronic funds network.
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| Reclassification, Policy [Policy Text Block] | Certain reclassifications have been made to conform to the current period presentation.
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| Newly Adopted and Pending Accounting Policies [Policy Text Block] | Newly Adopted and Pending Accounting Policies Financial Accounting Standards Board FASB ASU 2023-01, Leases (Topic 842): Common Control Arrangements On March 27, 2023, the FASB issued ASU 2023-01 which, in part, amends the accounting for leasehold improvement in common-control arrangements. Under previous guidance, a lessee is generally required to amortize leasehold improvements that it owns over the shorter of the useful life of those improvements or the lease term. However, due to the nature of leasehold improvements made under leases between entities under common control, ASU 2023-01 requires a lessee in a common-control arrangement to amortize such leasehold improvements that it owns over the improvements' useful life to the common control group, regardless of the lease term. ASU 2023-01 is effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Adoption of ASU 2023-01 did not have a material impact on the Company's financial statements. FASB ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures The FASB issued ASU 2023-07 on November 27, 2023, which is intended to improve reportable segment disclosure requirements. Under previous guidance, while entities were required to disclose segment revenue and measure of profit or loss, there has been limited disclosure around the reporting of segment expenses. In addition to enhanced disclosures about significant segment expenses, the amendments enhance interim disclosure requirements, clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, provide new segment disclosure requirements for entities with a single reportable segment, and contain other disclosure requirements. The purpose of the amendments is to enable investors to better understand an entity’s overall performance and assess potential future cash flows. ASU 2023-07 is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The Company is evaluating the requirements of the expanded segment disclosures. FASB ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures The FASB issued ASU 2023-09 on December 14, 2023, which amends income tax disclosures to provide information to better assess how an entity’s operations and related tax risks and tax planning and operational opportunities affect its tax rate and prospects for future cash flows. The new guidance requires the entity to disclose specific categories in the rate reconciliation and provide additional information for reconciling items that meet a quantitative threshold. ASU 2023-09 is effective for annual periods beginning after December 15, 2024. The Company is currently assessing the impact ASU 2023-09 will have on its income tax disclosures. FASB ASU 2024-01, Compensation—Stock Compensation (Topic 718): Scope Application of Profits Interest and Similar Awards The FASB issued ASU 2024-01 on March 21, 2024, which provides illustrative guidance to help entities determine whether profits interest and similar awards should be accounted for as share-based payment arrangements within the scope of Topic 718, Compensation—Stock Compensation. The ASU is effective for annual periods beginning after December 15, 2024, including interim periods within those periods. Adoption of ASU 2024-01 is not expected to have a material impact on the Company's financial statements.
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| Derivatives, Policy [Policy Text Block] | Derivative instruments may be used by the Company as part of its internal risk management programs or may be offered to customers. All derivative instruments are carried at fair value, and changes in fair value are reported in earnings as they occur. Credit risk is also considered in determining fair value. Deterioration in the credit rating of customer or other counterparties reduce the fair value of asset contracts. Deterioration of our credit rating could decrease the fair value of our derivative liabilities. When bilateral netting agreements or similar arrangements exist between the Company and its counterparties that create a single legal claim or obligation to pay or receive the net amount in settlement of the individual derivative contracts, the Company reports derivative assets and liabilities on a net by derivative contract type by counterparty basis. Derivative contracts may require the Company to provide or receive cash margin as collateral for derivative assets and liabilities. Derivative assets and liabilities are reported net of cash margin when certain conditions are met. In addition, derivative contracts executed with customers under Customer Risk Management Programs may be secured by non-cash collateral in conjunction with a credit agreement with that customer. Access to collateral in the event of default is reasonably assured. None of these derivative contracts have been designated as hedging instruments for accounting purposes. Customer Risk Management Programs BOK Financial offers programs to permit its customers to manage various risks, including fluctuations in energy, interest rates, foreign exchange rates, and other commodities with derivative contracts. Customers may also manage interest rate risk through interest rate swaps used by borrowers to modify interest rate terms of their loans. Derivative contracts are executed between the customers and BOK Financial. Offsetting contracts are executed between BOK Financial and other selected counterparties to minimize the 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. Trading BOK Financial may offer derivative instruments such as to-be-announced securities to mortgage banking customers to enable them to manage their market risk or to mitigate the Company's market risk of holding trading securities. Changes in the fair value of derivative instruments for trading purposes or used to mitigate the market risk of holding trading securities are included in Other operating revenue – Brokerage and trading revenue in the Consolidated Statements of Earnings. Internal Risk Management Programs BOK Financial may use derivative contracts in managing its interest rate sensitivity, as part of its economic hedge of the change in the fair value of mortgage servicing rights. Changes in the fair value of derivative instruments used in managing interest rate sensitivity and as part of the economic hedge of changes in the fair value of mortgage servicing rights are included in Other operating revenue – Gain (loss) on derivatives, net in the Consolidated Statements of Earnings. As discussed in Note 5, certain derivative contracts not designated as hedging instruments related to mortgage loan commitments and forward sales contracts are included in Residential mortgage loans held for sale on the Consolidated Balance Sheets. See Note 5 for additional discussion of notional, fair value, and impact on earnings of these contracts.
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| Loans and Allowances for Credit Losses, Loans [Policy Text Block] | Loans Loans are either secured or unsecured based on the type of loan and the financial condition of the borrower. Repayment is generally expected from cash flow or proceeds from the sale of selected assets of the borrower. BOK Financial is exposed to risk of loss on loans due to the borrower's difficulties, which may arise from any number of factors, including problems within the respective industry or local economic conditions. Access to collateral, in the event of borrower default, is reasonably assured through adherence to applicable lending laws and through sound lending standards and credit review procedures. Accounting policies for all loans, excluding residential mortgage loans guaranteed by U.S. government agencies, are as follows. Interest is accrued at the applicable interest rate on the principal amount outstanding. Loans are placed on nonaccruing status when, in the opinion of management, full collection of principal or interest is uncertain. Internally risk graded loans are individually evaluated for nonaccruing status quarterly. Non-risk graded loans are generally placed on nonaccruing status when more than 90 days past due or within 60 days of being notified of the borrower's bankruptcy filing. Interest previously accrued but not collected is charged against interest income when the loan is placed on nonaccruing status. Accrued but not paid interest receivable is included in Receivables in the Consolidated Balance Sheets. Payments on nonaccruing loans are applied to principal or recognized as interest income, according to management's judgment as to the collectability of principal. Loans may be returned to accruing status when, in the opinion of management, full collection of principal and interest, including principal previously charged off, is probable based on improvements in the borrower's financial condition or a sustained period of performance. For loans acquired with no evidence of credit deterioration, discounts are accreted on either an individual basis for loans with unique characteristics or on a pool basis for groups of homogeneous loans. Accretion is discontinued when a loan with an individually attributed discount is placed on nonaccruing status. Modifications of loans to existing borrowers generally consist of interest rate reductions, extension of payment terms, or a combination of these. Modifications may arise either voluntarily through negotiations with the borrower or involuntarily through court order. Payment deferrals up to six months are generally considered to be short-term modifications. Generally, principal and accrued but unpaid interest are not voluntarily forgiven. A change to the allowance for credit losses is generally not recorded upon modification because the effect of most modifications made to borrowers experiencing financial difficulty is already included in the allowance methodology. Performing loans may be renewed under the current collateral value, debt service ratio, and other underwriting standards. Nonaccruing loans may be renewed and will remain classified as nonaccruing. Occasionally, loans, other than residential mortgage loans, may be held for sale in order to manage credit concentration. These loans are carried at the lower of cost or fair value with gains or losses recognized in Other gains (losses), net in the Consolidated Statements of Earnings. All loans are charged off when the loan balance or a portion of the loan balance is no longer supported by the paying capacity of the borrower or when the required cash flow is reduced in a modification. The charge-off amount is determined through a quarterly evaluation of available cash resources and collateral values. 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 type, are charged off. Loans to borrowers whose personal obligation has been discharged through Chapter 7 bankruptcy proceedings are charged off within 60 days of notice of the bankruptcy filing, regardless of payment status. Loan origination and commitment fees and direct loan acquisition and origination costs are deferred and amortized as an adjustment to yield over the life of the loan or over the commitment period, as applicable. Amortization does not anticipate loan prepayments. Net unamortized fees are recognized in full at time of payoff. Qualifying residential mortgage loans guaranteed by U.S. government agencies have been sold into GNMA pools. Under certain performance conditions specified in government programs, the Company may have the right, but not the obligation to repurchase loans from GNMA pools. These loans no longer qualify for sale accounting and are recognized in the Consolidated Balance Sheets. We do not expect to receive all principal and interest based on the loan's contractual terms. A portion of the principal balance continues to be guaranteed; however, interest accrues at a curtailed rate as specified in the programs. The carrying value of these loans is reduced based on an estimate of the expected cash flows discounted at the original note rate plus a liquidity spread. Guaranteed loans may be modified in accordance with U.S. government agency guidelines. Interest continues to accrue based on the modified rate. Guaranteed loans may either be resold into GNMA pools after a performance period specified by the programs or foreclosed and conveyed to the guarantors. Loans are disaggregated into portfolio segments and further disaggregated into classes. The portfolio segment is the level at which the Company develops and documents a systematic method for determining its allowance for credit losses. Classes are a further disaggregation of portfolio segments based on the risk characteristics of the loans and the Company's method for monitoring and assessing credit risk.
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| Loans and Allowances for Credit Losses, Allowances for Credit Losses [Policy Text Block] | Allowances for Credit Losses and Accrual for Off-balance Sheet Credit Risk from Unfunded Loans Commitments The allowance for loan losses and accrual for off-balance sheet credit risk from unfunded loan commitments represent the portion of the amortized cost basis of loans that we do not expect to collect over the asset's contractual life, considering past events, current conditions, and reasonable and supportable forecasts of future economic conditions. The appropriateness of the allowance for credit losses, including industry and product adjustments, is assessed quarterly by a senior management Allowance Committee. This review is based on an ongoing evaluation of the estimated expected credit losses in the portfolio and on unused commitments to provide financing. A well-documented methodology has been developed and is applied by an independent Credit Administration department to assure consistency across the Company. The allowance for loan losses consists of specific allowances attributed to certain individual loans, generally nonaccruing loans, with dissimilar risk characteristics that have not yet been charged down to amounts we expect to recover and general allowances for estimated credit losses on pools of loans that share similar risk characteristics. When full collection of principal or interest is uncertain, the loan's risk characteristics have changed and we exclude the loan from the general allowance pool, typically designating it as nonaccruing. For these loans, a specific allowance reflects the expected credit loss. We measure specific allowances for loans excluded from the general allowance pool by an evaluation of estimated future cash flows discounted at the loan's initial effective interest rate or the fair value of collateral for certain collateral dependent loans. For a non-collateral dependent loan, the specific allowance is the amount by which the loan's amortized cost basis exceeds its net realizable value. We measure the specific allowance for collateral dependent loans as the amount by which the loan's amortized cost basis exceeds its fair value. When repayment is expected to be provided substantially through the sale of collateral, we deduct estimated selling costs from the collateral's fair value. Generally, for real property held as collateral for loans, third-party appraisals that conform to Uniform Standards of Professional Appraisal Practice serve as the basis for the fair value of real property held as collateral. These appraised values are on an "as-is" basis and generally are not adjusted by the Company. We obtain updated appraisals at least annually or more frequently if market conditions indicate collateral values may have declined. For energy loans, our internal staff of engineers generally determines collateral value of mineral rights based on projected cash flows from proven oil and gas reserves under existing economic and operating conditions. For real property held as collateral for other loans, third-party appraisals that conform to Uniform Standards of Professional Appraisal Practice generally serve as the basis for the fair value. These appraised values are on an "as-is" basis and generally are not adjusted by the Company. We obtain updated appraisals at least annually or more frequently if market conditions indicate collateral values may have declined. Our special assets staff generally determines the value of other collateral based on projected liquidation cash flows under current market conditions. We evaluate collateral values and available cash resources quarterly. Historical statistics may be used to estimate specific allowances in limited situations, such as when a collateral dependent loan is removed from the general allowance pool near the end of a reporting period until an appraisal of collateral value is received or a full assessment of future cash flows is completed. General allowances estimate expected credit losses on pools of loans sharing similar risk characteristics that are expected to occur over the loan's estimated remaining life. The loan's estimated remaining life represents the contractual term adjusted for amortization, estimates of prepayments, and borrower-owned extension options. Approximately 90% of the committed dollars in the loan portfolio is risk graded loans with general allowance model inputs that include probability of default, loss given default, and exposure at default. Probability of default is based on the migration of loans from performing to nonperforming using historical life of loan analysis periods. Loss given default is based on the aggregate losses incurred, net of estimated recoveries. Exposure at default represents an estimate of the outstanding amount of credit exposure at the time a default may occur. Charge-off migration is used to calculate the general allowance for the majority of non-risk graded loans to individuals. The expected credit loss on less than 10% of the committed dollars in the portfolio is calculated using charge-off migration. The expected credit loss on approximately 1% of the committed dollars in the portfolio is calculated using a non-modeled approach. Specifically, the calculation applies a long-term net charge-off rate to the loan balances, adjusted for the weighted average remaining maturity of each portfolio. In estimating the expected credit losses for general allowances on performing risk-graded loans, each portfolio class is assigned relevant economic loss drivers which best explain variations in portfolio net loss rates. The probability of default estimates for each portfolio class are adjusted for current and forecasted economic conditions. The result is applied to the exposure at default and loss given default to calculate the lifetime expected credit loss estimate. Selection of relevant economic loss drivers is re-evaluated periodically and involves statistical analysis as well as management judgment. The unemployment rate factors significantly in the allowance for loan losses calculation affecting commercial and loans to individuals segments. Other primary factors impacting the commercial portfolio include BBB corporate spreads, real gross domestic product growth rate, and energy commodity prices. The primary commercial real estate variables are vacancy rate and BBB corporate spreads. In addition to the unemployment rate, the forecast for loans to individuals is tied to a home price index. The forecasts may include regional economic factors when localized conditions diverge from national conditions. An Economic Forecast Committee, consisting of senior management with members largely independent of the allowance process, develops a twelve-month forward-looking forecast for the relevant economic loss drivers. Management develops these forecasts based on external data as well as a view of future economic conditions which may include adjustments for regional conditions. The forecast includes three economic scenarios and probability weights for each scenario. The base forecast represents management's view of the most likely outcome, while the downside forecast reflects reasonably possible worsening economic conditions, and the upside forecast projects reasonably possible improving conditions. At the end of the one-year reasonable and supportable forecast period, we transition from shorter-term expected losses to long-term loss averages for the loan's estimated remaining life. The difference between short-term loss forecasts and long-term loss averages is run-off over the reversion horizon, up to three years, depending on the forecasted economic scenarios. General allowances also consider the estimated impact of factors that are not captured in the modeled results or historical experience. These factors may increase or decrease modeled results by amounts determined by the Allowance Committee. Factors not captured in modeled results or historical experience may include for example, new lines of business, market conditions that have not been previously encountered, observed changes in credit risk that are not yet reflected in macro-economic factors, or economic conditions that impact loss given default assumptions. The accrual for off-balance sheet credit risk is maintained at a level that is appropriate to cover estimated losses associated with credit instruments that are not currently recognized as assets such as loan commitments, standby letters of credit, or guarantees that are not unconditionally cancelable by the bank. This accrual is included in other liabilities in the Consolidated Balance Sheets. The appropriateness of the accrual is determined in the same manner as the allowance for loan losses, with the added consideration of commitment usage over the remaining life for those loans that the bank can not unconditionally cancel. A provision for credit losses is charged against or credited to earnings in amounts necessary to maintain an appropriate Allowance for Credit Losses. Recoveries of loans previously charged off are added to the allowance when received.
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| Revenue [Policy Text Block] | Fees and commissions revenue is generated through the sales of products, consisting primarily of financial instruments, and the performance of services for customers under contractual obligations. Revenue from providing services for customers is recognized at the time services are provided in an amount that reflects the consideration we expect to be entitled to for those services. Revenue is recognized based on the application of five steps: •Identify the contract with a customer •Identify the performance obligations in the contract •Determine the transaction price •Allocate the transaction price to the performance obligations in the contract •Recognize revenue when (or as) the Company satisfies a performance obligation For contracts with multiple performance obligations, individual performance obligations are accounted for separately if the customer can benefit from the good or service on its own or with other resources readily available to the customer, and the promise to transfer goods and services to the customer is separately identifiable in the contract. The transaction price is allocated to the performance obligations based on relative standalone selling prices. Revenue is recognized on a gross basis whenever we have primary responsibility and risk in providing the services or products to our customers and have discretion in establishing the price for the services or products. Revenue is recognized on a net basis whenever we act as an agent for products or services of others. Brokerage and trading revenue includes revenues from trading, customer hedging, retail brokerage, and investment banking. Trading revenue includes net realized and unrealized gains primarily related to sales of securities to institutional customers and related derivative contracts. Customer hedging revenue includes realized and unrealized changes in the fair value of derivative contracts held for customer risk management programs including credit valuation adjustments, as necessary. We offer commodity, interest rate, foreign exchange, and equity derivatives to our customers. These customer contracts are offset with contracts with selected counterparties and exchanges to minimize changes in market risk from changes in commodity prices, interest rates, or foreign exchange rates. Retail brokerage revenue represents fees and commissions earned on sales of fixed income securities, annuities, mutual funds, and other financial instruments to retail customers. Investment banking revenue includes fees earned upon completion of underwriting and financial advisory services. Investment banking revenue also includes fees earned in conjunction with loan syndications. Insurance brokerage revenues represents fees and commissions earned on placement of insurance products with carriers for property and casualty and health coverage. Transaction card revenue includes merchant discount fees and electronic funds transfer network fees, net of interchange fees paid to card issuers and assessments paid to card networks. Merchant discount fees represent fees paid by customers for account management and electronic processing of card 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 BOKF, NA. Electronic funds transfer fees are recognized as electronic transactions processed on behalf of its members. Fiduciary and asset management revenue includes fees 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 include commercial account service charges, overdraft fees, check card fee revenue and automated service charge, and other deposit service fees. Fees are recognized at least quarterly in accordance with published deposit account agreements and disclosure statements for retail accounts or contractual agreements 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. 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. Mortgage banking revenue includes revenues recognized in conjunction with the origination, marketing, and servicing of conventional and government-sponsored residential mortgage loans. Mortgage production revenue includes net realized gains (losses) on sales of residential mortgage loans in the secondary market and the net change in unrealized gains (losses) on residential mortgage loans held for sale. Mortgage production revenue also includes changes in the fair value of derivative contracts not designated as hedging instruments related to residential mortgage loan commitments and forward sales contracts. Mortgage servicing revenue includes servicing fee income and late charges on loans serviced for others.
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Derivative Instruments and Hedging Activities (Policies) |
9 Months Ended |
|---|---|
Sep. 30, 2024 | |
| Derivative Instruments and Hedging Activities Disclosure [Abstract] | |
| Derivatives, Policy [Policy Text Block] | Derivative instruments may be used by the Company as part of its internal risk management programs or may be offered to customers. All derivative instruments are carried at fair value, and changes in fair value are reported in earnings as they occur. Credit risk is also considered in determining fair value. Deterioration in the credit rating of customer or other counterparties reduce the fair value of asset contracts. Deterioration of our credit rating could decrease the fair value of our derivative liabilities. When bilateral netting agreements or similar arrangements exist between the Company and its counterparties that create a single legal claim or obligation to pay or receive the net amount in settlement of the individual derivative contracts, the Company reports derivative assets and liabilities on a net by derivative contract type by counterparty basis. Derivative contracts may require the Company to provide or receive cash margin as collateral for derivative assets and liabilities. Derivative assets and liabilities are reported net of cash margin when certain conditions are met. In addition, derivative contracts executed with customers under Customer Risk Management Programs may be secured by non-cash collateral in conjunction with a credit agreement with that customer. Access to collateral in the event of default is reasonably assured. None of these derivative contracts have been designated as hedging instruments for accounting purposes. Customer Risk Management Programs BOK Financial offers programs to permit its customers to manage various risks, including fluctuations in energy, interest rates, foreign exchange rates, and other commodities with derivative contracts. Customers may also manage interest rate risk through interest rate swaps used by borrowers to modify interest rate terms of their loans. Derivative contracts are executed between the customers and BOK Financial. Offsetting contracts are executed between BOK Financial and other selected counterparties to minimize the 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. Trading BOK Financial may offer derivative instruments such as to-be-announced securities to mortgage banking customers to enable them to manage their market risk or to mitigate the Company's market risk of holding trading securities. Changes in the fair value of derivative instruments for trading purposes or used to mitigate the market risk of holding trading securities are included in Other operating revenue – Brokerage and trading revenue in the Consolidated Statements of Earnings. Internal Risk Management Programs BOK Financial may use derivative contracts in managing its interest rate sensitivity, as part of its economic hedge of the change in the fair value of mortgage servicing rights. Changes in the fair value of derivative instruments used in managing interest rate sensitivity and as part of the economic hedge of changes in the fair value of mortgage servicing rights are included in Other operating revenue – Gain (loss) on derivatives, net in the Consolidated Statements of Earnings. As discussed in Note 5, certain derivative contracts not designated as hedging instruments related to mortgage loan commitments and forward sales contracts are included in Residential mortgage loans held for sale on the Consolidated Balance Sheets. See Note 5 for additional discussion of notional, fair value, and impact on earnings of these contracts.
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Securities (Tables) |
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| Marketable Securities [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Securities, [Table Text Block] | The fair value and net unrealized gain (loss) included in trading securities are as follows (in thousands):
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| Investment Securities (Held-to-Maturity) [Table Text Block] | The amortized cost and fair values of investment securities are as follows (in thousands):
1 Carrying value includes $129 million of net unrealized loss which remains in AOCI in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available-for-sale securities portfolio to the investment securities portfolio.
1 Carrying value includes $165 million of net unrealized loss which remains in AOCI in the Consolidated Balance Sheets related to certain securities transferred during the second quarter of 2022 from the Available-for-sale securities portfolio to the investment securities portfolio. The amortized cost and fair values of investment securities at September 30, 2024, by contractual maturity, are as shown in the following table (dollars in thousands):
1Expected maturities may differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without penalty. 2The average expected lives of residential mortgage-backed securities were 4.6 years based upon current prepayment assumptions. Temporarily Impaired Investment Securities (dollars in thousands):
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| Available For Sale Securities [Table Text Block] | The amortized cost and fair value of available-for-sale securities are as follows (in thousands):
The amortized cost and fair values of available-for-sale securities at September 30, 2024, by contractual maturity, are as shown in the following table (dollars in thousands):
1Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalty. 2The average expected lives of residential mortgage-backed securities were 3.9 years based upon current prepayment assumptions. Sales of available-for-sale securities resulted in gains and losses as follows (in thousands):
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| Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block] |
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| Fair Value Option Securities [Table Text Block] | The fair value and net unrealized gain (loss) included in fair value option securities is as follows (in thousands):
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Derivatives (Tables) |
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| Derivative Instrument Detail [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Derivative Contracts [Table Text Block] | The following table summarizes the fair values of derivative contracts recorded as "derivative contracts" assets and liabilities in the balance sheet at September 30, 2024 (in thousands):
1 Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract. The following table summarizes the fair values of derivative contracts recorded as "derivative contracts" assets and liabilities in the balance sheet at December 31, 2023 (in thousands):
1 Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.
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| Derivative Instruments, Gain (Loss) in Statement of Earnings [Table Text Block] | The following summarizes the pre-tax net gains (losses) on derivative instruments and where they are recorded in the income statement (in thousands):
1 Represents changes in fair value of to-be-announced securities and other derivative instruments held to mitigate market risk of trading securities portfolio, which is offset by changes in fair value of trading securities also included in Brokerage and Trading Revenue in the Consolidated Statements of Earnings.
1 Represents changes in fair value of to-be-announced securities and other derivative instruments held to mitigate market risk of trading securities portfolio, which is offset by changes in fair value of trading securities also included in Brokerage and Trading Revenue in the Consolidated Statements of Earnings.
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Loans and Allowances for Credit Losses (Tables) |
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| Loans and Leases Receivable, Net Amount [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Loans by Portfolio Segment [Table Text Block] | Portfolio segments of the loan portfolio are as follows (in thousands):
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| Rollforward of Allowance For Loan Losses And Accrual for Off-Balance Sheet Credit Losses [Table Text Block] | The activity in the allowance for loan losses and the allowance for off-balance sheet credit losses related to loan commitments and standby letters of credit is summarized as follows (in thousands):
A $2.0 million provision for credit losses was necessary for the third quarter of 2024, reflecting continued strong credit quality, net loan paydowns, and relatively minor changes in economic forecast scenario assumptions. The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at September 30, 2024, is as follows (in thousands):
The allowance for loan losses and recorded investment of the related loans by portfolio segment for each measurement method at December 31, 2023, is as follows (in thousands):
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| Schedule of Credit Quality Indicators [Table Text Block] | The following table summarizes the Company’s loan portfolio at September 30, 2024, by the risk grade categories and vintage (in thousands):
1 Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due. The following table summarizes the Company's loan portfolio at December 31, 2023, by the risk grade categories and vintage (in thousands):
1 Includes charge-offs on deposit overdrafts, which are generally charged off at 60 days past due.
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| Financing Receivable, Nonaccrual [Table Text Block] | A summary of nonaccruing loans at September 30, 2024, follows (in thousands):
A summary of nonaccruing loans at December 31, 2023, follows (in thousands):
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| Summary of Loans by Aging Status [Table Text Block] | A summary of loans currently performing and past due as of September 30, 2024, is as follows (in thousands):
A summary of loans currently performing and past due as of December 31, 2023, is as follows (in thousands):
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Mortgage Banking Activities (Tables) |
9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2024 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mortgage Banking [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Components of Residential Mortgage Loans Held For Sale [Table Text Block] |
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| Mortgage Banking Revenue [Table Text Block] | Mortgage banking revenue was as follows (in thousands):
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| Summary of Mortgage Servicing Rights [Table Text Block] | The following represents a summary of mortgage servicing rights (dollars in thousands):
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| Activity in Capitalized Mortgage Servicing Rights [Table Text Block] | The following represents activity in capitalized mortgage servicing rights (in thousands):
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| Assumptions to Value Mortgage Servicing Rights [Table Text Block] | Mortgage servicing rights are not traded in active markets. Fair value is determined by discounting the projected net cash flows. Significant market assumptions used to determine fair value based on significant unobservable inputs were as follows:
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Shareholders' Equity (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2024 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Stockholders' Equity Note [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Accumulated Other Comprehensive Income (Loss) [Table Text Block] | A rollforward of the components of accumulated other comprehensive income (loss) is included as follows (in thousands):
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Earnings Per Share (Tables) |
9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2024 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Earnings Per Share [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Earnings Per Share [Table Text Block] |
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Reportable Segments (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| Segment Reporting [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Reportable Segments [Table Text Block] | Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended September 30, 2024, is as follows (in thousands):
Reportable segments reconciliation to the Consolidated Financial Statements for the nine months ended September 30, 2024, is as follows (in thousands):
Reportable segments reconciliation to the Consolidated Financial Statements for the three months ended September 30, 2023, is as follows (in thousands):
Reportable segments reconciliation to the Consolidated Financial Statements for the nine months ended September 30, 2023, is as follows (in thousands):
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Fees and Commissions Revenue Fees and Commissions Rvenue (Tables) |
9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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| Revenue from Contract with Customer [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Disaggregation of Fees and Commissions Revenue [Table Text Block] | Fees and commissions revenue by reportable segment and primary service line is as follows for the three months ended September 30, 2024 (in thousands):
1 Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance. 2 In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers. Fees and commissions revenue by reportable segment and primary service line is as follows for the nine months ended September 30, 2024 (in thousands):
1 Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance. 2 In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers. Fees and commissions revenue by reportable segment and primary service line is as follows for the three months ended September 30, 2023 (in thousands):
1 Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance. 2 In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers. Fees and commissions revenue by reportable segment and primary service line is as follows for the nine months ended September 30, 2023 (in thousands):
1 Out of scope revenue generally relates to financial instruments or contractual rights and obligations within the scope of other applicable accounting guidance. 2 In scope revenue represents revenue subject to FASB ASC Topic 606, Revenue from Contracts with Customers.
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Fair Value Measurements (Tables) |
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| Fair Value Disclosures [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Fair Value Assets And Liabilities Measured On A Recurring Basis [Table Text Block] | The fair value of financial assets and liabilities measured on a recurring basis was as follows as of September 30, 2024 (in thousands):
1Residential mortgage loans held for sale measured at fair value on a recurring basis using significant unobservable inputs (Level 3) consist of residential mortgage loans intended for sale to U.S. government agencies that fail to meet conforming standards and are valued at 82.54% of the unpaid principal balance. 2A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities. 3See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts in asset and liability positions that were valued based on quoted prices in active markets for identical instruments (Level 1) are primarily exchange-traded interest rate derivative contracts held for trading purposes. The fair value of financial assets and liabilities measured on a recurring basis was as follows as of December 31, 2023 (in thousands):
1Residential mortgage loans held for sale measured at fair value on a recurring basis using significant unobservable inputs (Level 3) consist of residential mortgage loans intended for sale to U.S. government agencies that fail to meet conforming standards and are valued at 77.74% of the unpaid principal balance. 2A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 5, Mortgage Banking Activities. 3See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts in asset and liability positions that were valued based on quoted prices in active markets for identical instruments (Level 1) are primarily exchange-traded interest rate derivative contracts held for trading purposes.
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| Fair Value Assets Measured on Nonrecurring Basis [Table Text Block] | The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at September 30, 2024, for which the fair value was adjusted during the nine months ended September 30, 2024 (in thousands):
The following represents the carrying value of assets measured at fair value on a non-recurring basis (and related losses) during the period. The carrying value represents only those assets with a balance at September 30, 2023, for which the fair value was adjusted during the nine months ended September 30, 2023 (in thousands):
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| Fair Value Inputs, Fair Value Measured On a Nonrecurring Basis, Quantitative Information [Table Text Block] | A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of September 30, 2024, follows (dollars in thousands):
1 Represents fair value as a percentage of the unpaid principal balance. A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of September 30, 2023, follows (dollars in thousands):
1 Represents fair value as a percentage of the unpaid principal balance.
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| Fair Value of Financial Instruments [Table Text Block] | The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or are measured at fair value on a non-recurring basis as of September 30, 2024 (in thousands):
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 are measured at fair value on a non-recurring basis as of December 31, 2023 (in thousands):
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Significant Accounting Policies Loans and Allowance for Credit Losses (Details) |
9 Months Ended |
|---|---|
Sep. 30, 2024 | |
| Loans and Allowance for Credit Losses [Abstract] | |
| Loans, Number of Days Past Due for a Non-Risk Graded Loan to be Placed on Nonaccruing Status | 90 days |
| Loans, Number of Days After Notification of Chapter 7 Bankruptcy Non-Risk Graded Loan is Placed on Nonaccruing Status | 60 days |
| Loans and Allowances for Credit Losses, Minimum No of Days After Which Past Due Non-Risk Graded Loans Are Charged Off | 60 days |
| Loans and Allowances for Credit Losses, Maximum No of Days After Which Past Due Non-Risk Graded Loans Are Charged Off | 180 days |
| Loans, Number of Days After Notification of Chapter 7 Bankruptcy Non-Risk Graded Loan is Charged Off | 60 days |
Trading Securities (Details) - USD ($) $ in Thousands |
Sep. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Schedule of Trading Securities [Line Items] | ||
| Trading Securities, Fair Value | $ 5,139,725 | $ 5,193,505 |
| Trading Securities, Net Unrealized Gain (Loss) | 40,184 | 98,635 |
| U.S. government securities [Member] | ||
| Schedule of Trading Securities [Line Items] | ||
| Trading Securities, Fair Value | 332,466 | 10,959 |
| Trading Securities, Net Unrealized Gain (Loss) | (569) | 28 |
| Residential agency mortgage-backed securities [Member] | ||
| Schedule of Trading Securities [Line Items] | ||
| Trading Securities, Fair Value | 4,672,427 | 5,105,137 |
| Trading Securities, Net Unrealized Gain (Loss) | 40,586 | 98,124 |
| Municipal securities [Member] | ||
| Schedule of Trading Securities [Line Items] | ||
| Trading Securities, Fair Value | 76,004 | 37,413 |
| Trading Securities, Net Unrealized Gain (Loss) | 43 | 323 |
| Other trading securities [Member] | ||
| Schedule of Trading Securities [Line Items] | ||
| Trading Securities, Fair Value | 58,828 | 39,996 |
| Trading Securities, Net Unrealized Gain (Loss) | $ 124 | $ 160 |
Available for Sale Securities (Details) $ in Thousands |
3 Months Ended | 9 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|
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Sep. 30, 2024
USD ($)
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Sep. 30, 2023
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Sep. 30, 2024
USD ($)
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Sep. 30, 2023
USD ($)
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Dec. 31, 2023
USD ($)
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| Debt Securities, Available-for-sale [Line Items] | |||||||||
| Available-for-sale Securities, Amortized Cost | $ 13,323,346 | $ 13,323,346 | $ 12,903,305 | ||||||
| Available-for-sale Securities, Fair Value | 13,015,986 | 13,015,986 | 12,286,681 | ||||||
| Available-for-sale Securities, Gross Unrealized Gain | 117,579 | 117,579 | 52,821 | ||||||
| Available-for-sale Securities, Gross Unrealized Loss | (424,939) | (424,939) | (669,445) | ||||||
| Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract] | |||||||||
| Available-for-sale Securities, Proceeds | 101,522 | $ 0 | 839,352 | $ 135,489 | |||||
| Available-for-sale Securities, Gross realized gains | 1,802 | 0 | 2,257 | 703 | |||||
| Available-for-sale Securities, Gross realized losses | (2,493) | 0 | (48,085) | (3,713) | |||||
| Available-for-sale Securities, Related federal and state income tax expense (benefit) | (163) | $ 0 | (10,779) | $ (708) | |||||
| Asset Pledged as Collateral with Right | |||||||||
| Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract] | |||||||||
| Pledged Securities | 10,500,000 | 10,500,000 | 13,900,000 | ||||||
| Fixed Maturity Securities [Member] | |||||||||
| Debt Securities, Available-for-sale, Maturity, Amortized Cost, Rolling Maturity [Abstract] | |||||||||
| Available-for-sale Securities, Debt Maturities, Less than One Year, Amortized Cost Basis | 317,443 | 317,443 | |||||||
| Available-for-sale Securities, Debt Maturities, One to Five Years, Amortized Cost Basis | 2,432,178 | 2,432,178 | |||||||
| Available-for-sale Securities, Debt Maturities, Six To Ten Years, Amortized Cost Basis | 631,714 | 631,714 | |||||||
| Available-for-sale Securities, Debt Maturities, Over Ten Years, Amortized Cost Basis | 436,923 | 436,923 | |||||||
| Available-for-sale Securities, Debt Maturities, Allocated and Single Maturity Date, Amortized Cost | 3,818,258 | 3,818,258 | |||||||
| Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract] | |||||||||
| Available-for-sale Securities, Debt Maturities, Less than One Year, Fair Value | 314,948 | 314,948 | |||||||
| Available-for-sale Securities, Debt Maturities, One to Five Years, Fair Value | 2,274,047 | 2,274,047 | |||||||
| Available-for-sale Securities, Debt Maturities, Six to Ten Years, Fair Value | 585,305 | 585,305 | |||||||
| Available-for-sale Securities, Debt Maturities, Over Ten Years, Fair Value | 424,975 | 424,975 | |||||||
| Available-for-sale Securities, Debt Maturities, Allocated and Single Maturity Date, Fair Value | $ 3,599,275 | $ 3,599,275 | |||||||
| Available-for-sale Securities, Debt Maturities, Weighted Average Maturity | [1] | 5.10 | 5.10 | ||||||
| U.S. Treasury [Member] | |||||||||
| Debt Securities, Available-for-sale [Line Items] | |||||||||
| Available-for-sale Securities, Amortized Cost | $ 1,000 | $ 1,000 | 1,000 | ||||||
| Available-for-sale Securities, Fair Value | 951 | 951 | 925 | ||||||
| Available-for-sale Securities, Gross Unrealized Gain | 0 | 0 | 0 | ||||||
| Available-for-sale Securities, Gross Unrealized Loss | (49) | (49) | (75) | ||||||
| Municipal securities [Member] | |||||||||
| Debt Securities, Available-for-sale [Line Items] | |||||||||
| Available-for-sale Securities, Amortized Cost | 241,447 | 241,447 | 544,707 | ||||||
| Available-for-sale Securities, Fair Value | 228,171 | 228,171 | 502,833 | ||||||
| Available-for-sale Securities, Gross Unrealized Gain | 7 | 7 | 1 | ||||||
| Available-for-sale Securities, Gross Unrealized Loss | (13,283) | (13,283) | (41,875) | ||||||
| Commercial agency mortgage-backed securities [Member] | |||||||||
| Debt Securities, Available-for-sale [Line Items] | |||||||||
| Available-for-sale Securities, Amortized Cost | 3,575,311 | 3,575,311 | 4,456,918 | ||||||
| Available-for-sale Securities, Fair Value | 3,369,680 | 3,369,680 | 4,147,853 | ||||||
| Available-for-sale Securities, Gross Unrealized Gain | 3,857 | 3,857 | 2,972 | ||||||
| Available-for-sale Securities, Gross Unrealized Loss | (209,488) | (209,488) | (312,037) | ||||||
| Other debt securities [Member] | |||||||||
| Debt Securities, Available-for-sale [Line Items] | |||||||||
| Available-for-sale Securities, Amortized Cost | 500 | 500 | 500 | ||||||
| Available-for-sale Securities, Fair Value | 473 | 473 | 473 | ||||||
| Available-for-sale Securities, Gross Unrealized Gain | 0 | 0 | 0 | ||||||
| Available-for-sale Securities, Gross Unrealized Loss | (27) | (27) | (27) | ||||||
| Residential Mortgage Backed Securities [Member] | |||||||||
| Debt Securities, Available-for-sale, Maturity, Amortized Cost, Rolling Maturity [Abstract] | |||||||||
| Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost | [2] | 9,505,088 | 9,505,088 | ||||||
| Debt Securities, Available-for-sale, Maturity, Fair Value, Rolling Maturity [Abstract] | |||||||||
| Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value | $ 9,416,711 | 9,416,711 | |||||||
| Available-for-sale Securities, Debt Maturities, Average Expected Life of Mortgage-backed Securities | 3 years 10 months 24 days | ||||||||
| Residential agency mortgage-backed securities [Member] | |||||||||
| Debt Securities, Available-for-sale [Line Items] | |||||||||
| Available-for-sale Securities, Amortized Cost | $ 8,649,078 | 8,649,078 | 7,066,645 | ||||||
| Available-for-sale Securities, Fair Value | 8,577,928 | 8,577,928 | 6,834,720 | ||||||
| Available-for-sale Securities, Gross Unrealized Gain | 98,405 | 98,405 | 36,983 | ||||||
| Available-for-sale Securities, Gross Unrealized Loss | (169,555) | (169,555) | (268,908) | ||||||
| Residential non-agency mortgage-backed securities [Member] | |||||||||
| Debt Securities, Available-for-sale [Line Items] | |||||||||
| Available-for-sale Securities, Amortized Cost | 856,010 | 856,010 | 833,535 | ||||||
| Available-for-sale Securities, Fair Value | 838,783 | 838,783 | 799,877 | ||||||
| Available-for-sale Securities, Gross Unrealized Gain | 15,310 | 15,310 | 12,865 | ||||||
| Available-for-sale Securities, Gross Unrealized Loss | $ (32,537) | $ (32,537) | $ (46,523) | ||||||
| |||||||||
Securities Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value (Details) $ in Thousands |
Sep. 30, 2024
USD ($)
|
Dec. 31, 2023
USD ($)
|
|---|---|---|
| Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] | ||
| Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 930 | 1,123 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 170,251 | $ 1,205,822 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 6,790,595 | 8,087,455 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 6,960,846 | 9,293,277 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 656 | 7,969 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 424,283 | 661,476 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 424,939 | $ 669,445 |
| U.S. Treasury [Member] | ||
| Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] | ||
| Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 1 | 1 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 0 | $ 0 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 951 | 925 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 951 | 925 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | 0 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 49 | 75 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 49 | $ 75 |
| Municipal securities [Member] | ||
| Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] | ||
| Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 112 | 190 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 0 | $ 6,799 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 224,510 | 494,955 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 224,510 | 501,754 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | 410 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 13,283 | 41,465 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 13,283 | $ 41,875 |
| Residential agency mortgage-backed securities [Member] | ||
| Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] | ||
| Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 563 | 630 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 111,492 | $ 690,118 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 3,108,156 | 3,717,975 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 3,219,648 | 4,408,093 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 578 | 3,689 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 168,977 | 265,219 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 169,555 | $ 268,908 |
| Residential non-agency mortgage-backed securities [Member] | ||
| Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] | ||
| Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 30 | 32 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 7,505 | $ 116,077 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 481,206 | 451,370 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 488,711 | 567,447 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 8 | 1,244 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 32,529 | 45,279 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 32,537 | $ 46,523 |
| Commercial agency mortgage-backed securities [Member] | ||
| Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] | ||
| Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 223 | 269 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 51,254 | $ 392,828 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 2,975,299 | 3,421,757 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 3,026,553 | 3,814,585 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 70 | 2,626 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 209,418 | 309,411 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 209,488 | $ 312,037 |
| Other debt securities [Member] | ||
| Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] | ||
| Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 1 | 1 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 0 | $ 0 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 473 | 473 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 473 | 473 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0 | 0 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 27 | 27 |
| Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | $ 27 | $ 27 |
Securities Fair Value Option Securities (Details) - USD ($) $ in Thousands |
Sep. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Fair Value Option Securities [Line Items] | ||
| Fair value option securities, Fair Value | $ 19,172 | $ 20,671 |
| Residential agency mortgage-backed securities [Member] | ||
| Fair Value Option Securities [Line Items] | ||
| Fair value option securities, Fair Value | 19,172 | 20,671 |
| Fair value option securities, Net Unrealized Gain (Loss) | $ (1,040) | $ (1,406) |
Derivatives, Fair Value of Derivatives Contracts (Details) - USD ($) $ in Thousands |
Sep. 30, 2024 |
Dec. 31, 2023 |
||||||
|---|---|---|---|---|---|---|---|---|
| Derivative Assets, Fair Value, Net [Abstract] | ||||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | $ 334,382 | $ 410,304 | ||||||
| Derivative Liabilities, Fair Value, Net [Abstract] | ||||||||
| Derivative Liabilities, Fair Value, Net of Cash Collateral | 402,559 | 587,473 | ||||||
| Not Designated as Hedging Instrument [Member] | ||||||||
| Notional Amount of Derivatives [Abstract] | ||||||||
| Derivative Assets, Notional | 33,192,701 | [1] | 27,348,813 | [2] | ||||
| Derivative Liabilities, Notional | 33,302,224 | [1] | 31,712,601 | [2] | ||||
| Derivative Assets, Fair Value, Net [Abstract] | ||||||||
| Derivative Assets, Gross Fair Value | 817,361 | 1,125,034 | ||||||
| Derivative Assets, Netting Adjustments | (371,292) | (443,069) | ||||||
| Derivative Assets, Net Fair Value Before Cash Collateral | 446,069 | 681,965 | ||||||
| Derivative Assets, Cash Collateral | (111,687) | (271,661) | ||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 334,382 | 410,304 | ||||||
| Derivative Liabilities, Fair Value, Net [Abstract] | ||||||||
| Derivative Liabilities, Gross Fair Value | 789,500 | 1,218,900 | ||||||
| Derivative Liabilities, Netting Adjustments | (371,292) | (443,069) | ||||||
| Derivative Liabilities, Net Fair Value Before Cash Collateral | 418,208 | 775,831 | ||||||
| Derivative Liabilities, Cash Collateral | (15,649) | (188,358) | ||||||
| Derivative Liabilities, Fair Value, Net of Cash Collateral | 402,559 | 587,473 | ||||||
| Not Designated as Hedging Instrument [Member] | Total customer risk management programs | ||||||||
| Notional Amount of Derivatives [Abstract] | ||||||||
| Derivative Assets, Notional | 10,141,048 | [1] | 10,658,981 | [2] | ||||
| Derivative Liabilities, Notional | 10,093,831 | [1] | 11,066,201 | [2] | ||||
| Derivative Assets, Fair Value, Net [Abstract] | ||||||||
| Derivative Assets, Gross Fair Value | 734,458 | 998,792 | ||||||
| Derivative Assets, Netting Adjustments | (319,622) | (405,958) | ||||||
| Derivative Assets, Net Fair Value Before Cash Collateral | 414,836 | 592,834 | ||||||
| Derivative Assets, Cash Collateral | (108,582) | (264,665) | ||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 306,254 | 328,169 | ||||||
| Derivative Liabilities, Fair Value, Net [Abstract] | ||||||||
| Derivative Liabilities, Gross Fair Value | 712,457 | 992,988 | ||||||
| Derivative Liabilities, Netting Adjustments | (319,622) | (405,958) | ||||||
| Derivative Liabilities, Net Fair Value Before Cash Collateral | 392,835 | 587,030 | ||||||
| Derivative Liabilities, Cash Collateral | (118) | (6,441) | ||||||
| Derivative Liabilities, Fair Value, Net of Cash Collateral | 392,717 | 580,589 | ||||||
| Not Designated as Hedging Instrument [Member] | Interest rate contracts [Member] | ||||||||
| Notional Amount of Derivatives [Abstract] | ||||||||
| Derivative Assets, Notional | 3,044,422 | [1] | 2,754,476 | [2] | ||||
| Derivative Liabilities, Notional | 3,044,422 | [1] | 2,754,476 | [2] | ||||
| Derivative Assets, Fair Value, Net [Abstract] | ||||||||
| Derivative Assets, Gross Fair Value | 78,868 | 108,450 | ||||||
| Derivative Assets, Netting Adjustments | (21,609) | (6,810) | ||||||
| Derivative Assets, Net Fair Value Before Cash Collateral | 57,259 | 101,640 | ||||||
| Derivative Assets, Cash Collateral | (34,677) | (94,608) | ||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 22,582 | 7,032 | ||||||
| Derivative Liabilities, Fair Value, Net [Abstract] | ||||||||
| Derivative Liabilities, Gross Fair Value | 78,694 | 108,402 | ||||||
| Derivative Liabilities, Netting Adjustments | (21,609) | (6,810) | ||||||
| Derivative Liabilities, Net Fair Value Before Cash Collateral | 57,085 | 101,592 | ||||||
| Derivative Liabilities, Cash Collateral | 0 | 0 | ||||||
| Derivative Liabilities, Fair Value, Net of Cash Collateral | 57,085 | 101,592 | ||||||
| Not Designated as Hedging Instrument [Member] | Energy contracts [Member] | ||||||||
| Notional Amount of Derivatives [Abstract] | ||||||||
| Derivative Assets, Notional | 7,026,833 | [1] | 7,846,190 | [2] | ||||
| Derivative Liabilities, Notional | 6,979,686 | [1] | 8,254,004 | [2] | ||||
| Derivative Assets, Fair Value, Net [Abstract] | ||||||||
| Derivative Assets, Gross Fair Value | 587,825 | 836,425 | ||||||
| Derivative Assets, Netting Adjustments | (298,013) | (399,148) | ||||||
| Derivative Assets, Net Fair Value Before Cash Collateral | 289,812 | 437,277 | ||||||
| Derivative Assets, Cash Collateral | (73,855) | (169,141) | ||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 215,957 | 268,136 | ||||||
| Derivative Liabilities, Fair Value, Net [Abstract] | ||||||||
| Derivative Liabilities, Gross Fair Value | 566,078 | 831,467 | ||||||
| Derivative Liabilities, Netting Adjustments | (298,013) | (399,148) | ||||||
| Derivative Liabilities, Net Fair Value Before Cash Collateral | 268,065 | 432,319 | ||||||
| Derivative Liabilities, Cash Collateral | (53) | (6,441) | ||||||
| Derivative Liabilities, Fair Value, Net of Cash Collateral | 268,012 | 425,878 | ||||||
| Not Designated as Hedging Instrument [Member] | Foreign exchange contracts [Member] | ||||||||
| Notional Amount of Derivatives [Abstract] | ||||||||
| Derivative Assets, Notional | 68,200 | [1] | 54,999 | [2] | ||||
| Derivative Liabilities, Notional | 68,130 | [1] | 54,405 | [2] | ||||
| Derivative Assets, Fair Value, Net [Abstract] | ||||||||
| Derivative Assets, Gross Fair Value | 67,590 | 53,863 | ||||||
| Derivative Assets, Netting Adjustments | 0 | 0 | ||||||
| Derivative Assets, Net Fair Value Before Cash Collateral | 67,590 | 53,863 | ||||||
| Derivative Assets, Cash Collateral | 0 | (872) | ||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 67,590 | 52,991 | ||||||
| Derivative Liabilities, Fair Value, Net [Abstract] | ||||||||
| Derivative Liabilities, Gross Fair Value | 67,510 | 53,065 | ||||||
| Derivative Liabilities, Netting Adjustments | 0 | 0 | ||||||
| Derivative Liabilities, Net Fair Value Before Cash Collateral | 67,510 | 53,065 | ||||||
| Derivative Liabilities, Cash Collateral | (65) | 0 | ||||||
| Derivative Liabilities, Fair Value, Net of Cash Collateral | 67,445 | 53,065 | ||||||
| Not Designated as Hedging Instrument [Member] | Equity option contracts [Member] | ||||||||
| Notional Amount of Derivatives [Abstract] | ||||||||
| Derivative Assets, Notional | 1,593 | [1] | 3,316 | [2] | ||||
| Derivative Liabilities, Notional | 1,593 | [1] | 3,316 | [2] | ||||
| Derivative Assets, Fair Value, Net [Abstract] | ||||||||
| Derivative Assets, Gross Fair Value | 175 | 54 | ||||||
| Derivative Assets, Netting Adjustments | 0 | 0 | ||||||
| Derivative Assets, Net Fair Value Before Cash Collateral | 175 | 54 | ||||||
| Derivative Assets, Cash Collateral | (50) | (44) | ||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 125 | 10 | ||||||
| Derivative Liabilities, Fair Value, Net [Abstract] | ||||||||
| Derivative Liabilities, Gross Fair Value | 175 | 54 | ||||||
| Derivative Liabilities, Netting Adjustments | 0 | 0 | ||||||
| Derivative Liabilities, Net Fair Value Before Cash Collateral | 175 | 54 | ||||||
| Derivative Liabilities, Cash Collateral | 0 | 0 | ||||||
| Derivative Liabilities, Fair Value, Net of Cash Collateral | 175 | 54 | ||||||
| Not Designated as Hedging Instrument [Member] | Trading [Member] | ||||||||
| Notional Amount of Derivatives [Abstract] | ||||||||
| Derivative Assets, Notional | 22,535,789 | [1] | 16,264,818 | [2] | ||||
| Derivative Liabilities, Notional | 23,129,139 | [1] | 20,644,156 | [2] | ||||
| Derivative Assets, Fair Value, Net [Abstract] | ||||||||
| Derivative Assets, Gross Fair Value | 80,994 | 118,545 | ||||||
| Derivative Assets, Netting Adjustments | (51,194) | (37,111) | ||||||
| Derivative Assets, Net Fair Value Before Cash Collateral | 29,800 | 81,434 | ||||||
| Derivative Assets, Cash Collateral | (3,105) | (6,996) | ||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 26,695 | 74,438 | ||||||
| Derivative Liabilities, Fair Value, Net [Abstract] | ||||||||
| Derivative Liabilities, Gross Fair Value | 75,225 | 224,648 | ||||||
| Derivative Liabilities, Netting Adjustments | (51,194) | (37,111) | ||||||
| Derivative Liabilities, Net Fair Value Before Cash Collateral | 24,031 | 187,537 | ||||||
| Derivative Liabilities, Cash Collateral | (15,531) | (181,917) | ||||||
| Derivative Liabilities, Fair Value, Net of Cash Collateral | 8,500 | 5,620 | ||||||
| Not Designated as Hedging Instrument [Member] | Internal risk management programs [Member] | ||||||||
| Notional Amount of Derivatives [Abstract] | ||||||||
| Derivative Assets, Notional | 515,864 | [1] | 425,014 | [2] | ||||
| Derivative Liabilities, Notional | 79,254 | [1] | 2,244 | [2] | ||||
| Derivative Assets, Fair Value, Net [Abstract] | ||||||||
| Derivative Assets, Gross Fair Value | 1,909 | 7,697 | ||||||
| Derivative Assets, Netting Adjustments | (476) | 0 | ||||||
| Derivative Assets, Net Fair Value Before Cash Collateral | 1,433 | 7,697 | ||||||
| Derivative Assets, Cash Collateral | 0 | 0 | ||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 1,433 | 7,697 | ||||||
| Derivative Liabilities, Fair Value, Net [Abstract] | ||||||||
| Derivative Liabilities, Gross Fair Value | 1,818 | 1,264 | ||||||
| Derivative Liabilities, Netting Adjustments | (476) | 0 | ||||||
| Derivative Liabilities, Net Fair Value Before Cash Collateral | 1,342 | 1,264 | ||||||
| Derivative Liabilities, Cash Collateral | 0 | 0 | ||||||
| Derivative Liabilities, Fair Value, Net of Cash Collateral | $ 1,342 | $ 1,264 | ||||||
| ||||||||
Derivatives, Derivatives Instruments Gain (Loss) in Income Statement (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|||||||||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract] | ||||||||||||
| Brokergage and Trading Revenue | $ (4,244) | $ 28,366 | $ 125,128 | $ 51,441 | ||||||||
| Gain (Loss) on Derivatives, Net | 8,991 | (9,010) | (733) | (18,513) | ||||||||
| Total customer risk management programs | ||||||||||||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract] | ||||||||||||
| Brokergage and Trading Revenue | 7,425 | 6,855 | 20,515 | 28,851 | ||||||||
| Gain (Loss) on Derivatives, Net | 0 | 0 | 0 | 0 | ||||||||
| Interest rate contracts [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract] | ||||||||||||
| Brokergage and Trading Revenue | 1,606 | 800 | 4,613 | 4,909 | ||||||||
| Gain (Loss) on Derivatives, Net | 0 | 0 | 0 | 0 | ||||||||
| Energy contracts [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract] | ||||||||||||
| Brokergage and Trading Revenue | 5,612 | 5,994 | 15,589 | 23,797 | ||||||||
| Gain (Loss) on Derivatives, Net | 0 | 0 | 0 | 0 | ||||||||
| Foreign exchange contracts [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract] | ||||||||||||
| Brokergage and Trading Revenue | 207 | 61 | 313 | 145 | ||||||||
| Gain (Loss) on Derivatives, Net | 0 | 0 | 0 | 0 | ||||||||
| Equity option contracts [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract] | ||||||||||||
| Brokergage and Trading Revenue | 0 | 0 | 0 | 0 | ||||||||
| Gain (Loss) on Derivatives, Net | 0 | 0 | 0 | 0 | ||||||||
| Trading [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract] | ||||||||||||
| Brokergage and Trading Revenue | (11,669) | [1] | 21,511 | [1] | 104,613 | [2] | 22,590 | [2] | ||||
| Gain (Loss) on Derivatives, Net | 0 | [1] | 0 | [1] | 0 | [2] | 0 | [2] | ||||
| Internal risk management programs [Member] | ||||||||||||
| Derivative Instruments, Gain (Loss) Recognized in Income, Net [Abstract] | ||||||||||||
| Brokergage and Trading Revenue | 0 | 0 | 0 | 0 | ||||||||
| Gain (Loss) on Derivatives, Net | $ 8,991 | $ (9,010) | $ (733) | $ (18,513) | ||||||||
| ||||||||||||
Loans and Allowance for Credit Losses, Loans by Portfolio Type (Details) - USD ($) $ in Thousands |
Sep. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Loan receivables disclosure [Abstract] | ||
| Loans, fixed rate of interest | $ 6,716,671 | $ 6,633,234 |
| Loans, variable rate of interest | 17,184,075 | 17,126,265 |
| Loans, non-accrual | 84,315 | 145,469 |
| Total | 23,985,061 | 23,904,968 |
| Credit Commitments [Abstract] | ||
| Outstanding commitments to extend credit | 14,600,000 | |
| Outstanding standby letters of credit | 735,000 | |
| Commercial [Member] | ||
| Loan receivables disclosure [Abstract] | ||
| Loans, fixed rate of interest | 3,527,823 | 3,558,563 |
| Loans, variable rate of interest | 11,298,427 | 11,135,075 |
| Loans, non-accrual | 51,672 | 110,131 |
| Total | 14,877,922 | 14,803,769 |
| Commercial real estate [Member] | ||
| Loan receivables disclosure [Abstract] | ||
| Loans, fixed rate of interest | 652,104 | 791,757 |
| Loans, variable rate of interest | 4,524,187 | 4,538,570 |
| Loans, non-accrual | 12,364 | 7,320 |
| Total | 5,188,655 | 5,337,647 |
| Loans to individuals [Member] | ||
| Loan receivables disclosure [Abstract] | ||
| Loans, fixed rate of interest | 2,536,744 | 2,282,914 |
| Loans, variable rate of interest | 1,361,461 | 1,452,620 |
| Loans, non-accrual | 20,279 | 28,018 |
| Total | $ 3,918,484 | $ 3,763,552 |
Loans and Allowances for Credit Losses, Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
Dec. 31, 2023 |
|
| Financing Receivable, Allowance for Credit Loss [Roll Forward] | |||||
| Beginning balance | $ 287,826 | $ 262,714 | $ 277,123 | $ 235,704 | $ 235,704 |
| Provision for loan losses | (3,424) | 15,931 | 19,684 | 50,413 | |
| Loans charged off | (2,496) | (10,593) | (17,496) | (22,309) | |
| Recoveries of loans previously charged off | 2,550 | 4,062 | 5,145 | 8,306 | |
| Ending balance | 284,456 | 272,114 | 284,456 | 272,114 | 277,123 |
| Provision Details [Abstract] | |||||
| Provision for credit losses | 2,000 | 7,000 | 18,000 | 40,000 | |
| Off-Balance Sheet, Credit Loss, Liability [Roll Forward] | |||||
| Beginning balance | 42,336 | 59,940 | 48,977 | 60,919 | 60,919 |
| Provision for off-balance sheet credit risk | 5,430 | (7,336) | (1,211) | (8,315) | |
| Ending balance | 47,766 | 52,604 | 47,766 | 52,604 | 48,977 |
| Recorded investment [Abstract] | |||||
| Collectively measured for impairment, recorded investment | 23,900,746 | 23,900,746 | 23,759,499 | ||
| Individually measured for impairment, recorded investment | 84,315 | 84,315 | 145,469 | ||
| Total | 23,985,061 | 23,985,061 | 23,904,968 | ||
| Related allowance [Abstract] | |||||
| Collectively measured for impairment, related allowance | 281,523 | 281,523 | 274,431 | ||
| Individually measured for impairment, related allowance | 2,933 | 2,933 | 2,692 | ||
| Total | 284,456 | 284,456 | 277,123 | ||
| Commercial [Member] | |||||
| Financing Receivable, Allowance for Credit Loss [Roll Forward] | |||||
| Beginning balance | 150,737 | 143,269 | 141,232 | 131,586 | 131,586 |
| Provision for loan losses | 918 | 1,158 | 19,670 | 12,908 | |
| Loans charged off | (856) | (6,769) | (11,487) | (9,578) | |
| Recoveries of loans previously charged off | 1,562 | 273 | 2,946 | 3,015 | |
| Ending balance | 152,361 | 137,931 | 152,361 | 137,931 | 141,232 |
| Off-Balance Sheet, Credit Loss, Liability [Roll Forward] | |||||
| Beginning balance | 17,316 | 20,294 | 19,762 | 18,246 | 18,246 |
| Provision for off-balance sheet credit risk | 357 | (2,179) | (2,089) | (131) | |
| Ending balance | 17,673 | 18,115 | 17,673 | 18,115 | 19,762 |
| Recorded investment [Abstract] | |||||
| Collectively measured for impairment, recorded investment | 14,826,250 | 14,826,250 | 14,693,638 | ||
| Individually measured for impairment, recorded investment | 51,672 | 51,672 | 110,131 | ||
| Total | 14,877,922 | 14,877,922 | 14,803,769 | ||
| Related allowance [Abstract] | |||||
| Collectively measured for impairment, related allowance | 149,428 | 149,428 | 138,540 | ||
| Individually measured for impairment, related allowance | 2,933 | 2,933 | 2,692 | ||
| Total | 152,361 | 152,361 | 141,232 | ||
| Commercial real estate [Member] | |||||
| Financing Receivable, Allowance for Credit Loss [Roll Forward] | |||||
| Beginning balance | 96,256 | 76,347 | 94,718 | 57,648 | 57,648 |
| Provision for loan losses | (4,944) | 11,152 | (1,991) | 35,878 | |
| Loans charged off | 0 | (2,238) | (1,455) | (8,446) | (8,446) |
| Recoveries of loans previously charged off | 226 | 3,167 | 266 | 3,348 | |
| Ending balance | 91,538 | 88,428 | 91,538 | 88,428 | 94,718 |
| Off-Balance Sheet, Credit Loss, Liability [Roll Forward] | |||||
| Beginning balance | 23,314 | 37,681 | 27,439 | 40,490 | 40,490 |
| Provision for off-balance sheet credit risk | 5,058 | (5,076) | 933 | (7,885) | |
| Ending balance | 28,372 | 32,605 | 28,372 | 32,605 | 27,439 |
| Recorded investment [Abstract] | |||||
| Collectively measured for impairment, recorded investment | 5,176,291 | 5,176,291 | 5,330,327 | ||
| Individually measured for impairment, recorded investment | 12,364 | 12,364 | 7,320 | ||
| Total | 5,188,655 | 5,188,655 | 5,337,647 | ||
| Related allowance [Abstract] | |||||
| Collectively measured for impairment, related allowance | 91,538 | 91,538 | 94,718 | ||
| Individually measured for impairment, related allowance | 0 | 0 | 0 | ||
| Total | 91,538 | 91,538 | 94,718 | ||
| Loans to individuals [Member] | |||||
| Financing Receivable, Allowance for Credit Loss [Roll Forward] | |||||
| Beginning balance | 40,833 | 43,098 | 41,173 | 46,470 | 46,470 |
| Provision for loan losses | 602 | 3,621 | 2,005 | 1,627 | |
| Loans charged off | (1,640) | (1,586) | (4,554) | (4,285) | |
| Recoveries of loans previously charged off | 762 | 622 | 1,933 | 1,943 | |
| Ending balance | 40,557 | 45,755 | 40,557 | 45,755 | 41,173 |
| Off-Balance Sheet, Credit Loss, Liability [Roll Forward] | |||||
| Beginning balance | 1,706 | 1,965 | 1,776 | 2,183 | 2,183 |
| Provision for off-balance sheet credit risk | 15 | (81) | (55) | (299) | |
| Ending balance | 1,721 | $ 1,884 | 1,721 | $ 1,884 | 1,776 |
| Recorded investment [Abstract] | |||||
| Collectively measured for impairment, recorded investment | 3,898,205 | 3,898,205 | 3,735,534 | ||
| Individually measured for impairment, recorded investment | 20,279 | 20,279 | 28,018 | ||
| Total | 3,918,484 | 3,918,484 | 3,763,552 | ||
| Related allowance [Abstract] | |||||
| Collectively measured for impairment, related allowance | 40,557 | 40,557 | 41,173 | ||
| Individually measured for impairment, related allowance | 0 | 0 | 0 | ||
| Total | $ 40,557 | $ 40,557 | $ 41,173 | ||
Loans and Allowances for Credit Losses, Credit Quality Indicators (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
Dec. 31, 2023 |
|||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | $ 2,443,279 | $ 2,443,279 | $ 3,743,425 | ||||||||
| Financing Receivable, Originated, Year Two | 3,069,840 | 3,069,840 | 4,522,989 | ||||||||
| Financing Receivable, Originated, Year Three | 4,497,611 | 4,497,611 | 2,982,784 | ||||||||
| Financing Receivable, Originated, Year Four | 2,515,930 | 2,515,930 | 1,756,064 | ||||||||
| Financing Receivable, Originated, Year Five | 1,486,183 | 1,486,183 | 1,234,871 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 3,449,605 | 3,449,605 | 3,094,093 | ||||||||
| Financing Receivable, Revolving | 6,497,659 | 6,497,659 | 6,543,149 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 24,954 | 24,954 | 27,593 | ||||||||
| Total | 23,985,061 | 23,985,061 | 23,904,968 | ||||||||
| Financing Receivable, Allowance for Credit Loss, Writeoff | 2,496 | $ 10,593 | 17,496 | $ 22,309 | |||||||
| Commercial [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 1,656,201 | 1,656,201 | 2,698,113 | ||||||||
| Financing Receivable, Originated, Year Two | 2,046,823 | 2,046,823 | 2,026,636 | ||||||||
| Financing Receivable, Originated, Year Three | 1,857,959 | 1,857,959 | 1,293,089 | ||||||||
| Financing Receivable, Originated, Year Four | 1,152,641 | 1,152,641 | 846,923 | ||||||||
| Financing Receivable, Originated, Year Five | 745,926 | 745,926 | 576,627 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 1,945,556 | 1,945,556 | 1,839,613 | ||||||||
| Financing Receivable, Revolving | 5,470,548 | 5,470,548 | 5,519,976 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 2,268 | 2,268 | 2,792 | ||||||||
| Total | 14,877,922 | 14,877,922 | 14,803,769 | ||||||||
| Financing Receivable, Allowance for Credit Loss, Writeoff | 856 | 6,769 | 11,487 | 9,578 | |||||||
| Commercial [Member] | Healthcare [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 442,818 | 442,818 | 650,768 | ||||||||
| Financing Receivable Year One Originated Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, Year Two | 610,301 | 610,301 | 897,730 | ||||||||
| Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, Year Three | 984,451 | 984,451 | 609,244 | ||||||||
| Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, Year Four | 524,216 | 524,216 | 467,993 | ||||||||
| Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, Year Five | 413,697 | 413,697 | 355,026 | ||||||||
| Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff | 0 | 2,500 | |||||||||
| Financing Receivable, Originated, More Than Five Years | 912,798 | 912,798 | 880,099 | ||||||||
| Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff | 7,240 | 0 | |||||||||
| Financing Receivable, Revolving | 260,777 | 260,777 | 282,358 | ||||||||
| Financing Receivable Revolving Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 11 | 11 | 15 | ||||||||
| Financing Receivable Revolving Converted to Term Writeoff | 0 | 0 | |||||||||
| Total | 4,149,069 | 4,149,069 | 4,143,233 | ||||||||
| Financing Receivable, Allowance for Credit Loss, Writeoff | 7,240 | 2,500 | |||||||||
| Commercial [Member] | Services [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 480,824 | 480,824 | 900,090 | ||||||||
| Financing Receivable Year One Originated Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, Year Two | 673,043 | 673,043 | 541,573 | ||||||||
| Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, Year Three | 460,064 | 460,064 | 405,205 | ||||||||
| Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff | 0 | 3,060 | |||||||||
| Financing Receivable, Originated, Year Four | 428,601 | 428,601 | 230,823 | ||||||||
| Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, Year Five | 202,391 | 202,391 | 110,618 | ||||||||
| Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff | 22 | 0 | |||||||||
| Financing Receivable, Originated, More Than Five Years | 657,400 | 657,400 | 651,745 | ||||||||
| Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff | 80 | 0 | |||||||||
| Financing Receivable, Revolving | 670,929 | 670,929 | 735,561 | ||||||||
| Financing Receivable Revolving Writeoff | 9 | 2,642 | |||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 418 | 418 | 608 | ||||||||
| Financing Receivable Revolving Converted to Term Writeoff | 0 | 0 | |||||||||
| Total | 3,573,670 | 3,573,670 | 3,576,223 | ||||||||
| Financing Receivable, Allowance for Credit Loss, Writeoff | 111 | 5,702 | |||||||||
| Commercial [Member] | Energy [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 145,706 | 145,706 | 190,122 | ||||||||
| Financing Receivable, Originated, Year Two | 86,682 | 86,682 | 100,006 | ||||||||
| Financing Receivable, Originated, Year Three | 40,426 | 40,426 | 43,769 | ||||||||
| Financing Receivable, Originated, Year Four | 2,618 | 2,618 | 7,876 | ||||||||
| Financing Receivable, Originated, Year Five | 7,199 | 7,199 | 9,562 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 19,806 | 19,806 | 11,682 | ||||||||
| Financing Receivable, Revolving | 2,824,198 | 2,824,198 | 3,074,084 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 3,126,635 | 3,126,635 | 3,437,101 | ||||||||
| Commercial [Member] | General business [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 586,853 | 586,853 | 957,133 | ||||||||
| Financing Receivable Year One Originated Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, Year Two | 676,797 | 676,797 | 487,327 | ||||||||
| Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff | 27 | 0 | |||||||||
| Financing Receivable, Originated, Year Three | 373,018 | 373,018 | 234,871 | ||||||||
| Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff | 1,465 | 4,598 | |||||||||
| Financing Receivable, Originated, Year Four | 197,206 | 197,206 | 140,231 | ||||||||
| Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff | 0 | 2 | |||||||||
| Financing Receivable, Originated, Year Five | 122,639 | 122,639 | 101,421 | ||||||||
| Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, More Than Five Years | 355,552 | 355,552 | 296,087 | ||||||||
| Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff | 164 | 48 | |||||||||
| Financing Receivable, Revolving | 1,714,644 | 1,714,644 | 1,427,973 | ||||||||
| Financing Receivable Revolving Writeoff | 2,390 | 10 | |||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 1,839 | 1,839 | 2,169 | ||||||||
| Financing Receivable Revolving Converted to Term Writeoff | 90 | 38 | |||||||||
| Total | 4,028,548 | 4,028,548 | 3,647,212 | ||||||||
| Financing Receivable, Allowance for Credit Loss, Writeoff | 4,136 | 4,696 | |||||||||
| Commercial real estate [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 207,236 | 207,236 | 399,883 | ||||||||
| Financing Receivable Year One Originated Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, Year Two | 486,586 | 486,586 | 1,942,389 | ||||||||
| Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, Year Three | 2,176,796 | 2,176,796 | 1,194,762 | ||||||||
| Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, Year Four | 910,081 | 910,081 | 416,647 | ||||||||
| Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, Year Five | 305,372 | 305,372 | 520,725 | ||||||||
| Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, More Than Five Years | 964,067 | 964,067 | 727,146 | ||||||||
| Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff | 1,455 | 8,446 | |||||||||
| Financing Receivable, Revolving | 138,517 | 138,517 | 136,095 | ||||||||
| Financing Receivable Revolving Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Financing Receivable Revolving Converted to Term Writeoff | 0 | 0 | |||||||||
| Total | 5,188,655 | 5,188,655 | 5,337,647 | ||||||||
| Financing Receivable, Allowance for Credit Loss, Writeoff | 0 | 2,238 | 1,455 | 8,446 | 8,446 | ||||||
| Loans to individuals [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 579,842 | 579,842 | 645,429 | ||||||||
| Financing Receivable, Originated, Year Two | 536,431 | 536,431 | 553,964 | ||||||||
| Financing Receivable, Originated, Year Three | 462,856 | 462,856 | 494,933 | ||||||||
| Financing Receivable, Originated, Year Four | 453,208 | 453,208 | 492,494 | ||||||||
| Financing Receivable, Originated, Year Five | 434,885 | 434,885 | 137,519 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 539,982 | 539,982 | 527,334 | ||||||||
| Financing Receivable, Revolving | 888,594 | 888,594 | 887,078 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 22,686 | 22,686 | 24,801 | ||||||||
| Total | 3,918,484 | 3,918,484 | 3,763,552 | ||||||||
| Financing Receivable, Allowance for Credit Loss, Writeoff | 1,640 | $ 1,586 | 4,554 | $ 4,285 | |||||||
| Loans to individuals [Member] | Residential mortgage [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 384,728 | 384,728 | 426,325 | ||||||||
| Financing Receivable Year One Originated Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, Year Two | 366,125 | 366,125 | 322,442 | ||||||||
| Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff | 43 | 0 | |||||||||
| Financing Receivable, Originated, Year Three | 298,667 | 298,667 | 343,295 | ||||||||
| Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff | 0 | 51 | |||||||||
| Financing Receivable, Originated, Year Four | 326,806 | 326,806 | 351,647 | ||||||||
| Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff | 0 | 4 | |||||||||
| Financing Receivable, Originated, Year Five | 322,459 | 322,459 | 55,200 | ||||||||
| Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff | 0 | 0 | |||||||||
| Financing Receivable, Originated, More Than Five Years | 260,129 | 260,129 | 255,920 | ||||||||
| Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff | 11 | 17 | |||||||||
| Financing Receivable, Revolving | 388,779 | 388,779 | 381,158 | ||||||||
| Financing Receivable Revolving Writeoff | 9 | 0 | |||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 22,600 | 22,600 | 24,653 | ||||||||
| Financing Receivable Revolving Converted to Term Writeoff | 0 | 1 | |||||||||
| Total | 2,370,293 | 2,370,293 | 2,160,640 | ||||||||
| Financing Receivable, Allowance for Credit Loss, Writeoff | 63 | 73 | |||||||||
| Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 633 | ||||||||
| Financing Receivable, Originated, Year Two | 1,997 | 1,997 | 1,788 | ||||||||
| Financing Receivable, Originated, Year Three | 2,925 | 2,925 | 2,220 | ||||||||
| Financing Receivable, Originated, Year Four | 2,456 | 2,456 | 4,577 | ||||||||
| Financing Receivable, Originated, Year Five | 3,766 | 3,766 | 6,816 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 116,603 | 116,603 | 133,773 | ||||||||
| Financing Receivable, Revolving | 0 | 0 | 0 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 127,747 | 127,747 | 149,807 | ||||||||
| Loans to individuals [Member] | Personal [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 195,114 | 195,114 | 218,471 | ||||||||
| Financing Receivable Year One Originated Current Fiscal Year Writeoff | 4,280 | [1] | 5,636 | [2] | |||||||
| Financing Receivable, Originated, Year Two | 168,309 | 168,309 | 229,734 | ||||||||
| Financing Receivable Year Two Originated Fiscal Year Before Current Fiscal Year Writeoff | 69 | [1] | 82 | [2] | |||||||
| Financing Receivable, Originated, Year Three | 161,264 | 161,264 | 149,418 | ||||||||
| Financing Receivable Year Three Originated Two Years Before Current Fiscal Year Writeoff | 47 | [1] | 96 | [2] | |||||||
| Financing Receivable, Originated, Year Four | 123,946 | 123,946 | 136,270 | ||||||||
| Financing Receivable Year Four Originated Three Years Before Current Fiscal Year Writeoff | 42 | [1] | 43 | [2] | |||||||
| Financing Receivable, Originated, Year Five | 108,660 | 108,660 | 75,503 | ||||||||
| Financing Receivable Year Five Originated Four Years Before Current Fiscal Year Writeoff | 7 | [1] | 0 | [2] | |||||||
| Financing Receivable, Originated, More Than Five Years | 163,250 | 163,250 | 137,641 | ||||||||
| Financing Receivable Originated More than Five Years Before Current Fiscal Year Writeoff | 0 | [1] | 10 | [2] | |||||||
| Financing Receivable, Revolving | 499,815 | 499,815 | 505,920 | ||||||||
| Financing Receivable Revolving Writeoff | 26 | [1] | 6 | [2] | |||||||
| Financing Receivable, Revolving, Converted to Term Loan | 86 | 86 | 148 | ||||||||
| Financing Receivable Revolving Converted to Term Writeoff | 20 | [1] | 26 | [2] | |||||||
| Total | 1,420,444 | 1,420,444 | 1,453,105 | ||||||||
| Financing Receivable, Allowance for Credit Loss, Writeoff | 4,491 | [1] | 5,899 | [2] | |||||||
| Performing [Member] | Commercial [Member] | Healthcare [Member] | Pass [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 442,818 | 442,818 | 650,768 | ||||||||
| Financing Receivable, Originated, Year Two | 595,301 | 595,301 | 895,602 | ||||||||
| Financing Receivable, Originated, Year Three | 951,875 | 951,875 | 590,736 | ||||||||
| Financing Receivable, Originated, Year Four | 502,829 | 502,829 | 409,001 | ||||||||
| Financing Receivable, Originated, Year Five | 355,731 | 355,731 | 331,897 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 835,842 | 835,842 | 809,858 | ||||||||
| Financing Receivable, Revolving | 259,118 | 259,118 | 281,378 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 11 | 11 | 15 | ||||||||
| Total | 3,943,525 | 3,943,525 | 3,969,255 | ||||||||
| Performing [Member] | Commercial [Member] | Healthcare [Member] | Special Mention [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 15,000 | 15,000 | 0 | ||||||||
| Financing Receivable, Originated, Year Three | 27,223 | 27,223 | 0 | ||||||||
| Financing Receivable, Originated, Year Four | 1,361 | 1,361 | 21,791 | ||||||||
| Financing Receivable, Originated, Year Five | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 46,499 | 46,499 | 31,235 | ||||||||
| Financing Receivable, Revolving | 505 | 505 | 5 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 90,588 | 90,588 | 53,031 | ||||||||
| Performing [Member] | Commercial [Member] | Healthcare [Member] | Accruing Substandard [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 0 | 0 | 2,128 | ||||||||
| Financing Receivable, Originated, Year Three | 5,249 | 5,249 | 18,508 | ||||||||
| Financing Receivable, Originated, Year Four | 17,932 | 17,932 | 6,911 | ||||||||
| Financing Receivable, Originated, Year Five | 57,966 | 57,966 | 0 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 16,728 | 16,728 | 10,896 | ||||||||
| Financing Receivable, Revolving | 1,154 | 1,154 | 975 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 99,029 | 99,029 | 39,418 | ||||||||
| Performing [Member] | Commercial [Member] | Services [Member] | Pass [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 480,824 | 480,824 | 900,090 | ||||||||
| Financing Receivable, Originated, Year Two | 670,546 | 670,546 | 526,776 | ||||||||
| Financing Receivable, Originated, Year Three | 453,306 | 453,306 | 401,872 | ||||||||
| Financing Receivable, Originated, Year Four | 427,841 | 427,841 | 228,818 | ||||||||
| Financing Receivable, Originated, Year Five | 200,459 | 200,459 | 106,112 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 642,779 | 642,779 | 643,477 | ||||||||
| Financing Receivable, Revolving | 653,202 | 653,202 | 730,729 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 418 | 418 | 595 | ||||||||
| Total | 3,529,375 | 3,529,375 | 3,538,469 | ||||||||
| Performing [Member] | Commercial [Member] | Services [Member] | Special Mention [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 1,729 | 1,729 | 1,085 | ||||||||
| Financing Receivable, Originated, Year Three | 135 | 135 | 1,520 | ||||||||
| Financing Receivable, Originated, Year Four | 739 | 739 | 1,341 | ||||||||
| Financing Receivable, Originated, Year Five | 447 | 447 | 534 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 9,186 | 9,186 | 4,522 | ||||||||
| Financing Receivable, Revolving | 15,150 | 15,150 | 81 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 27,386 | 27,386 | 9,083 | ||||||||
| Performing [Member] | Commercial [Member] | Services [Member] | Accruing Substandard [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 768 | 768 | 13,712 | ||||||||
| Financing Receivable, Originated, Year Three | 6,623 | 6,623 | 178 | ||||||||
| Financing Receivable, Originated, Year Four | 21 | 21 | 326 | ||||||||
| Financing Receivable, Originated, Year Five | 1,485 | 1,485 | 3,972 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 5,435 | 5,435 | 3,746 | ||||||||
| Financing Receivable, Revolving | 1,152 | 1,152 | 3,108 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 13 | ||||||||
| Total | 15,484 | 15,484 | 25,055 | ||||||||
| Performing [Member] | Commercial [Member] | Energy [Member] | Pass [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 145,706 | 145,706 | 190,122 | ||||||||
| Financing Receivable, Originated, Year Two | 86,682 | 86,682 | 100,006 | ||||||||
| Financing Receivable, Originated, Year Three | 40,426 | 40,426 | 43,769 | ||||||||
| Financing Receivable, Originated, Year Four | 2,618 | 2,618 | 7,876 | ||||||||
| Financing Receivable, Originated, Year Five | 7,199 | 7,199 | 9,562 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 19,736 | 19,736 | 11,583 | ||||||||
| Financing Receivable, Revolving | 2,782,432 | 2,782,432 | 3,025,590 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 3,084,799 | 3,084,799 | 3,388,508 | ||||||||
| Performing [Member] | Commercial [Member] | Energy [Member] | Special Mention [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Three | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Four | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Five | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 0 | 0 | 0 | ||||||||
| Financing Receivable, Revolving | 0 | 0 | 13,950 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 0 | 0 | 13,950 | ||||||||
| Performing [Member] | Commercial [Member] | Energy [Member] | Accruing Substandard [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Three | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Four | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Five | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 0 | 0 | 0 | ||||||||
| Financing Receivable, Revolving | 12,850 | 12,850 | 16,800 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 12,850 | 12,850 | 16,800 | ||||||||
| Performing [Member] | Commercial [Member] | General business [Member] | Pass [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 585,622 | 585,622 | 942,468 | ||||||||
| Financing Receivable, Originated, Year Two | 655,994 | 655,994 | 436,832 | ||||||||
| Financing Receivable, Originated, Year Three | 320,646 | 320,646 | 224,735 | ||||||||
| Financing Receivable, Originated, Year Four | 184,779 | 184,779 | 138,951 | ||||||||
| Financing Receivable, Originated, Year Five | 121,167 | 121,167 | 101,100 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 347,249 | 347,249 | 287,744 | ||||||||
| Financing Receivable, Revolving | 1,699,086 | 1,699,086 | 1,389,128 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 1,692 | 1,692 | 2,164 | ||||||||
| Total | 3,916,235 | 3,916,235 | 3,523,122 | ||||||||
| Performing [Member] | Commercial [Member] | General business [Member] | Special Mention [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 10,264 | ||||||||
| Financing Receivable, Originated, Year Two | 5,276 | 5,276 | 16,167 | ||||||||
| Financing Receivable, Originated, Year Three | 4,629 | 4,629 | 8,420 | ||||||||
| Financing Receivable, Originated, Year Four | 7,227 | 7,227 | 1,253 | ||||||||
| Financing Receivable, Originated, Year Five | 279 | 279 | 321 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 1,750 | 1,750 | 8,295 | ||||||||
| Financing Receivable, Revolving | 2,000 | 2,000 | 897 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 89 | 89 | 0 | ||||||||
| Total | 21,250 | 21,250 | 45,617 | ||||||||
| Performing [Member] | Commercial [Member] | General business [Member] | Accruing Substandard [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 1,063 | 1,063 | 4,401 | ||||||||
| Financing Receivable, Originated, Year Two | 15,527 | 15,527 | 33,194 | ||||||||
| Financing Receivable, Originated, Year Three | 46,749 | 46,749 | 1,716 | ||||||||
| Financing Receivable, Originated, Year Four | 5,200 | 5,200 | 27 | ||||||||
| Financing Receivable, Originated, Year Five | 1,193 | 1,193 | 0 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 6,523 | 6,523 | 0 | ||||||||
| Financing Receivable, Revolving | 9,474 | 9,474 | 31,992 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 85,729 | 85,729 | 71,330 | ||||||||
| Performing [Member] | Commercial real estate [Member] | Pass [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 207,236 | 207,236 | 396,891 | ||||||||
| Financing Receivable, Originated, Year Two | 483,818 | 483,818 | 1,941,913 | ||||||||
| Financing Receivable, Originated, Year Three | 2,124,731 | 2,124,731 | 1,194,759 | ||||||||
| Financing Receivable, Originated, Year Four | 877,950 | 877,950 | 416,647 | ||||||||
| Financing Receivable, Originated, Year Five | 305,372 | 305,372 | 513,555 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 922,524 | 922,524 | 705,092 | ||||||||
| Financing Receivable, Revolving | 138,517 | 138,517 | 136,095 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 5,060,148 | 5,060,148 | 5,304,952 | ||||||||
| Performing [Member] | Commercial real estate [Member] | Special Mention [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 352 | 352 | 476 | ||||||||
| Financing Receivable, Originated, Year Three | 14,907 | 14,907 | 0 | ||||||||
| Financing Receivable, Originated, Year Four | 32,131 | 32,131 | 0 | ||||||||
| Financing Receivable, Originated, Year Five | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 0 | 0 | 19,171 | ||||||||
| Financing Receivable, Revolving | 0 | 0 | 0 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 47,390 | 47,390 | 19,647 | ||||||||
| Performing [Member] | Commercial real estate [Member] | Accruing Substandard [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 2,992 | ||||||||
| Financing Receivable, Originated, Year Two | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Three | 37,158 | 37,158 | 3 | ||||||||
| Financing Receivable, Originated, Year Four | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Five | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 31,595 | 31,595 | 2,733 | ||||||||
| Financing Receivable, Revolving | 0 | 0 | 0 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 68,753 | 68,753 | 5,728 | ||||||||
| Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Pass [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 384,583 | 384,583 | 426,089 | ||||||||
| Financing Receivable, Originated, Year Two | 365,415 | 365,415 | 320,733 | ||||||||
| Financing Receivable, Originated, Year Three | 298,108 | 298,108 | 342,927 | ||||||||
| Financing Receivable, Originated, Year Four | 326,216 | 326,216 | 349,742 | ||||||||
| Financing Receivable, Originated, Year Five | 321,928 | 321,928 | 54,801 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 251,578 | 251,578 | 243,356 | ||||||||
| Financing Receivable, Revolving | 383,530 | 383,530 | 375,739 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 22,040 | 22,040 | 23,895 | ||||||||
| Total | 2,353,398 | 2,353,398 | 2,137,282 | ||||||||
| Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Special Mention [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 54 | 54 | 157 | ||||||||
| Financing Receivable, Originated, Year Two | 246 | 246 | 140 | ||||||||
| Financing Receivable, Originated, Year Three | 69 | 69 | 131 | ||||||||
| Financing Receivable, Originated, Year Four | 158 | 158 | 1,361 | ||||||||
| Financing Receivable, Originated, Year Five | 0 | 0 | 18 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 85 | 85 | 134 | ||||||||
| Financing Receivable, Revolving | 1,424 | 1,424 | 2,982 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 93 | ||||||||
| Total | 2,036 | 2,036 | 5,016 | ||||||||
| Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Accruing Substandard [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 91 | 91 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 0 | 0 | 150 | ||||||||
| Financing Receivable, Originated, Year Three | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Four | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Five | 0 | 0 | 37 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 31 | 31 | 49 | ||||||||
| Financing Receivable, Revolving | 1,049 | 1,049 | 50 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 1,171 | 1,171 | 286 | ||||||||
| Performing [Member] | Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | Pass [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 633 | ||||||||
| Financing Receivable, Originated, Year Two | 1,997 | 1,997 | 1,788 | ||||||||
| Financing Receivable, Originated, Year Three | 2,925 | 2,925 | 2,220 | ||||||||
| Financing Receivable, Originated, Year Four | 2,456 | 2,456 | 4,297 | ||||||||
| Financing Receivable, Originated, Year Five | 3,486 | 3,486 | 6,441 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 110,363 | 110,363 | 124,719 | ||||||||
| Financing Receivable, Revolving | 0 | 0 | 0 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 121,227 | 121,227 | 140,098 | ||||||||
| Performing [Member] | Loans to individuals [Member] | Personal [Member] | Pass [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 195,101 | 195,101 | 218,401 | ||||||||
| Financing Receivable, Originated, Year Two | 168,303 | 168,303 | 229,580 | ||||||||
| Financing Receivable, Originated, Year Three | 161,189 | 161,189 | 149,291 | ||||||||
| Financing Receivable, Originated, Year Four | 123,890 | 123,890 | 136,215 | ||||||||
| Financing Receivable, Originated, Year Five | 108,652 | 108,652 | 75,348 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 163,097 | 163,097 | 137,629 | ||||||||
| Financing Receivable, Revolving | 497,801 | 497,801 | 503,841 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 86 | 86 | 145 | ||||||||
| Total | 1,418,119 | 1,418,119 | 1,450,450 | ||||||||
| Performing [Member] | Loans to individuals [Member] | Personal [Member] | Special Mention [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 13 | 13 | 66 | ||||||||
| Financing Receivable, Originated, Year Two | 0 | 0 | 39 | ||||||||
| Financing Receivable, Originated, Year Three | 54 | 54 | 106 | ||||||||
| Financing Receivable, Originated, Year Four | 24 | 24 | 30 | ||||||||
| Financing Receivable, Originated, Year Five | 1 | 1 | 8 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 8 | 8 | 0 | ||||||||
| Financing Receivable, Revolving | 0 | 0 | 1,918 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 3 | ||||||||
| Total | 100 | 100 | 2,170 | ||||||||
| Performing [Member] | Loans to individuals [Member] | Personal [Member] | Accruing Substandard [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 0 | 0 | 64 | ||||||||
| Financing Receivable, Originated, Year Three | 0 | 0 | 12 | ||||||||
| Financing Receivable, Originated, Year Four | 25 | 25 | 9 | ||||||||
| Financing Receivable, Originated, Year Five | 2 | 2 | 144 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 137 | 137 | 0 | ||||||||
| Financing Receivable, Revolving | 1,990 | 1,990 | 3 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 2,154 | 2,154 | 232 | ||||||||
| Nonperforming Financial Instruments [Member] | Commercial [Member] | Healthcare [Member] | Nonaccrual [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Three | 104 | 104 | 0 | ||||||||
| Financing Receivable, Originated, Year Four | 2,094 | 2,094 | 30,290 | ||||||||
| Financing Receivable, Originated, Year Five | 0 | 0 | 23,129 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 13,729 | 13,729 | 28,110 | ||||||||
| Financing Receivable, Revolving | 0 | 0 | 0 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 15,927 | 15,927 | 81,529 | ||||||||
| Nonperforming Financial Instruments [Member] | Commercial [Member] | Services [Member] | Nonaccrual [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Three | 0 | 0 | 1,635 | ||||||||
| Financing Receivable, Originated, Year Four | 0 | 0 | 338 | ||||||||
| Financing Receivable, Originated, Year Five | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 0 | 0 | 0 | ||||||||
| Financing Receivable, Revolving | 1,425 | 1,425 | 1,643 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 1,425 | 1,425 | 3,616 | ||||||||
| Nonperforming Financial Instruments [Member] | Commercial [Member] | Energy [Member] | Nonaccrual [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Three | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Four | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Five | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 70 | 70 | 99 | ||||||||
| Financing Receivable, Revolving | 28,916 | 28,916 | 17,744 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 28,986 | 28,986 | 17,843 | ||||||||
| Nonperforming Financial Instruments [Member] | Commercial [Member] | General business [Member] | Nonaccrual [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 168 | 168 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 0 | 0 | 1,134 | ||||||||
| Financing Receivable, Originated, Year Three | 994 | 994 | 0 | ||||||||
| Financing Receivable, Originated, Year Four | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Five | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 30 | 30 | 48 | ||||||||
| Financing Receivable, Revolving | 4,084 | 4,084 | 5,956 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 58 | 58 | 5 | ||||||||
| Total | 5,334 | 5,334 | 7,143 | ||||||||
| Nonperforming Financial Instruments [Member] | Commercial real estate [Member] | Nonaccrual [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 2,416 | 2,416 | 0 | ||||||||
| Financing Receivable, Originated, Year Three | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Four | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Five | 0 | 0 | 7,170 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 9,948 | 9,948 | 150 | ||||||||
| Financing Receivable, Revolving | 0 | 0 | 0 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 12,364 | 12,364 | 7,320 | ||||||||
| Nonperforming Financial Instruments [Member] | Loans to individuals [Member] | Residential mortgage [Member] | Nonaccrual [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 79 | ||||||||
| Financing Receivable, Originated, Year Two | 464 | 464 | 1,419 | ||||||||
| Financing Receivable, Originated, Year Three | 490 | 490 | 237 | ||||||||
| Financing Receivable, Originated, Year Four | 432 | 432 | 544 | ||||||||
| Financing Receivable, Originated, Year Five | 531 | 531 | 344 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 8,435 | 8,435 | 12,381 | ||||||||
| Financing Receivable, Revolving | 2,776 | 2,776 | 2,387 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 560 | 560 | 665 | ||||||||
| Total | 13,688 | 13,688 | 18,056 | ||||||||
| Nonperforming Financial Instruments [Member] | Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | Nonaccrual [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Two | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Three | 0 | 0 | 0 | ||||||||
| Financing Receivable, Originated, Year Four | 0 | 0 | 280 | ||||||||
| Financing Receivable, Originated, Year Five | 280 | 280 | 375 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 6,240 | 6,240 | 9,054 | ||||||||
| Financing Receivable, Revolving | 0 | 0 | 0 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | 6,520 | 6,520 | 9,709 | ||||||||
| Nonperforming Financial Instruments [Member] | Loans to individuals [Member] | Personal [Member] | Nonaccrual [Member] | |||||||||||
| Financing Receivable, Credit Quality Indicator Line Items [Abstract] | |||||||||||
| Financing Receivable, Originated, Year One | 0 | 0 | 4 | ||||||||
| Financing Receivable, Originated, Year Two | 6 | 6 | 51 | ||||||||
| Financing Receivable, Originated, Year Three | 21 | 21 | 9 | ||||||||
| Financing Receivable, Originated, Year Four | 7 | 7 | 16 | ||||||||
| Financing Receivable, Originated, Year Five | 5 | 5 | 3 | ||||||||
| Financing Receivable, Originated, More Than Five Years | 8 | 8 | 12 | ||||||||
| Financing Receivable, Revolving | 24 | 24 | 158 | ||||||||
| Financing Receivable, Revolving, Converted to Term Loan | 0 | 0 | 0 | ||||||||
| Total | $ 71 | $ 71 | $ 253 | ||||||||
| |||||||||||
Loans and Allowances for Credit Losses Loans and Allowances for Credit Losses, Nonaccrual (Details) - USD ($) $ in Thousands |
Sep. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Financing Receivable, Nonaccrual [Line Items] | ||
| Nonaccrual | $ 84,315 | $ 145,469 |
| Financing Receivable, Nonaccrual, No Allowance | 66,649 | 102,380 |
| Financing Receivable, Nonaccrual, With Allowance | 17,666 | 43,089 |
| Financing Receivable, Nonaccrual, Related Allowance | 2,933 | 2,692 |
| Commercial [Member] | ||
| Financing Receivable, Nonaccrual [Line Items] | ||
| Nonaccrual | 51,672 | 110,131 |
| Financing Receivable, Nonaccrual, No Allowance | 34,006 | 67,042 |
| Financing Receivable, Nonaccrual, With Allowance | 17,666 | 43,089 |
| Financing Receivable, Nonaccrual, Related Allowance | 2,933 | 2,692 |
| Commercial [Member] | Healthcare [Member] | ||
| Financing Receivable, Nonaccrual [Line Items] | ||
| Nonaccrual | 15,927 | 81,529 |
| Financing Receivable, Nonaccrual, No Allowance | 15,927 | 40,372 |
| Financing Receivable, Nonaccrual, With Allowance | 0 | 41,157 |
| Financing Receivable, Nonaccrual, Related Allowance | 0 | 1,478 |
| Commercial [Member] | Services [Member] | ||
| Financing Receivable, Nonaccrual [Line Items] | ||
| Nonaccrual | 1,425 | 3,616 |
| Financing Receivable, Nonaccrual, No Allowance | 1,149 | 1,684 |
| Financing Receivable, Nonaccrual, With Allowance | 276 | 1,932 |
| Financing Receivable, Nonaccrual, Related Allowance | 276 | 1,214 |
| Commercial [Member] | Energy [Member] | ||
| Financing Receivable, Nonaccrual [Line Items] | ||
| Nonaccrual | 28,986 | 17,843 |
| Financing Receivable, Nonaccrual, No Allowance | 11,596 | 17,843 |
| Financing Receivable, Nonaccrual, With Allowance | 17,390 | 0 |
| Financing Receivable, Nonaccrual, Related Allowance | 2,657 | 0 |
| Commercial [Member] | General business [Member] | ||
| Financing Receivable, Nonaccrual [Line Items] | ||
| Nonaccrual | 5,334 | 7,143 |
| Financing Receivable, Nonaccrual, No Allowance | 5,334 | 7,143 |
| Financing Receivable, Nonaccrual, With Allowance | 0 | 0 |
| Financing Receivable, Nonaccrual, Related Allowance | 0 | 0 |
| Commercial real estate [Member] | ||
| Financing Receivable, Nonaccrual [Line Items] | ||
| Nonaccrual | 12,364 | 7,320 |
| Financing Receivable, Nonaccrual, No Allowance | 12,364 | 7,320 |
| Financing Receivable, Nonaccrual, With Allowance | 0 | 0 |
| Financing Receivable, Nonaccrual, Related Allowance | 0 | 0 |
| Loans to individuals [Member] | ||
| Financing Receivable, Nonaccrual [Line Items] | ||
| Nonaccrual | 20,279 | 28,018 |
| Financing Receivable, Nonaccrual, No Allowance | 20,279 | 28,018 |
| Financing Receivable, Nonaccrual, With Allowance | 0 | 0 |
| Financing Receivable, Nonaccrual, Related Allowance | 0 | 0 |
| Loans to individuals [Member] | Residential mortgage [Member] | ||
| Financing Receivable, Nonaccrual [Line Items] | ||
| Nonaccrual | 13,688 | 18,056 |
| Financing Receivable, Nonaccrual, No Allowance | 13,688 | 18,056 |
| Financing Receivable, Nonaccrual, With Allowance | 0 | 0 |
| Financing Receivable, Nonaccrual, Related Allowance | 0 | 0 |
| Loans to individuals [Member] | Personal [Member] | ||
| Financing Receivable, Nonaccrual [Line Items] | ||
| Nonaccrual | 71 | 253 |
| Financing Receivable, Nonaccrual, No Allowance | 71 | 253 |
| Financing Receivable, Nonaccrual, With Allowance | 0 | 0 |
| Financing Receivable, Nonaccrual, Related Allowance | 0 | 0 |
| US Government Agency Insured Loans [Member] | Loans to individuals [Member] | Residential mortgage [Member] | ||
| Financing Receivable, Nonaccrual [Line Items] | ||
| Nonaccrual | 6,520 | 9,709 |
| Financing Receivable, Nonaccrual, No Allowance | 6,520 | 9,709 |
| Financing Receivable, Nonaccrual, With Allowance | 0 | 0 |
| Financing Receivable, Nonaccrual, Related Allowance | $ 0 | $ 0 |
Loans and Allowances for Credit Losses, Modifications (Details) - USD ($) $ in Millions |
9 Months Ended | |
|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
|
| Financing Receivable, Loan Modifications [Line Items] | ||
| Financing Receivable, Modified in Period, Amount | $ 147.0 | $ 136.0 |
| Financing Receivable, Modified, Subsequent Default | $ 32.0 | |
| Number of Days Past Due Following Modification to be Considered a Payment Default | 30 days | |
| Commercial [Member] | Extended Maturity | ||
| Financing Receivable, Loan Modifications [Line Items] | ||
| Financing Receivable, Modified in Period, Amount | $ 141.0 | |
| Financing Receivable, Modified, Subsequent Default | 28.0 | |
| Healthcare [Member] | Commercial [Member] | ||
| Financing Receivable, Loan Modifications [Line Items] | ||
| Financing Receivable, Modified in Period, Amount | 90.0 | 42.0 |
| Healthcare [Member] | Commercial [Member] | Extended Maturity and Interest Rate Reduction | ||
| Financing Receivable, Loan Modifications [Line Items] | ||
| Financing Receivable, Modified in Period, Amount | 26.0 | |
| General business [Member] | Commercial [Member] | ||
| Financing Receivable, Loan Modifications [Line Items] | ||
| Financing Receivable, Modified in Period, Amount | 81.0 | |
| Healthcare, Services and General business member | Extended Maturity | ||
| Financing Receivable, Loan Modifications [Line Items] | ||
| Financing Receivable, Modified in Period, Amount | 97.0 | |
| Energy [Member] | Commercial [Member] | ||
| Financing Receivable, Loan Modifications [Line Items] | ||
| Financing Receivable, Modified in Period, Amount | 43.0 | |
| US Government Agency Insured Loans [Member] | Residential Mortgage [Member] | Loans to individuals [Member] | ||
| Financing Receivable, Loan Modifications [Line Items] | ||
| Financing Receivable, Modified in Period, Amount | 12.0 | |
| US Government Agency Insured Loans [Member] | Residential Mortgage [Member] | Loans to individuals [Member] | Extended Maturity and Interest Rate Reduction | ||
| Financing Receivable, Loan Modifications [Line Items] | ||
| Financing Receivable, Modified in Period, Amount | 5.9 | 12.0 |
| Financing Receivable, Modified, Subsequent Default | $ 4.3 | $ 4.0 |
Loans and Allowances for Credit Losses, By Aging Category (Details) - USD ($) $ in Thousands |
Sep. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Financing Receivable, Past Due [Line Items] | ||
| Past Due 90 Days or More and Accruing | $ 45,740 | $ 48,371 |
| Current and Past Due Performing Loans | 23,985,061 | 23,904,968 |
| 30 to 59 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 40,760 | 55,411 |
| 60 to 89 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 31,490 | 50,082 |
| 90 Days or More [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 80,267 | 93,644 |
| Financial Asset, Not Past Due | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 23,832,544 | 23,705,831 |
| Commercial [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Past Due 90 Days or More and Accruing | 0 | 0 |
| Current and Past Due Performing Loans | 14,877,922 | 14,803,769 |
| Commercial [Member] | 30 to 59 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 12,726 | 18,433 |
| Commercial [Member] | 60 to 89 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 17,601 | 31,447 |
| Commercial [Member] | 90 Days or More [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 15,876 | 29,890 |
| Commercial [Member] | Financial Asset, Not Past Due | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 14,831,719 | 14,723,999 |
| Commercial [Member] | Healthcare [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Past Due 90 Days or More and Accruing | 0 | 0 |
| Current and Past Due Performing Loans | 4,149,069 | 4,143,233 |
| Commercial [Member] | Healthcare [Member] | 30 to 59 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 0 | 18,019 |
| Commercial [Member] | Healthcare [Member] | 60 to 89 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 211 | 30,290 |
| Commercial [Member] | Healthcare [Member] | 90 Days or More [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 9,988 | 23,588 |
| Commercial [Member] | Healthcare [Member] | Financial Asset, Not Past Due | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 4,138,870 | 4,071,336 |
| Commercial [Member] | Services [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Past Due 90 Days or More and Accruing | 0 | 0 |
| Current and Past Due Performing Loans | 3,573,670 | 3,576,223 |
| Commercial [Member] | Services [Member] | 30 to 59 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 1,002 | 2 |
| Commercial [Member] | Services [Member] | 60 to 89 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 0 | 0 |
| Commercial [Member] | Services [Member] | 90 Days or More [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 658 | 434 |
| Commercial [Member] | Services [Member] | Financial Asset, Not Past Due | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 3,572,010 | 3,575,787 |
| Commercial [Member] | Energy [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Past Due 90 Days or More and Accruing | 0 | 0 |
| Current and Past Due Performing Loans | 3,126,635 | 3,437,101 |
| Commercial [Member] | Energy [Member] | 30 to 59 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 11,526 | 0 |
| Commercial [Member] | Energy [Member] | 60 to 89 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 17,390 | 0 |
| Commercial [Member] | Energy [Member] | 90 Days or More [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 0 | 0 |
| Commercial [Member] | Energy [Member] | Financial Asset, Not Past Due | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 3,097,719 | 3,437,101 |
| Commercial [Member] | General business [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Past Due 90 Days or More and Accruing | 0 | 0 |
| Current and Past Due Performing Loans | 4,028,548 | 3,647,212 |
| Commercial [Member] | General business [Member] | 30 to 59 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 198 | 412 |
| Commercial [Member] | General business [Member] | 60 to 89 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 0 | 1,157 |
| Commercial [Member] | General business [Member] | 90 Days or More [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 5,230 | 5,868 |
| Commercial [Member] | General business [Member] | Financial Asset, Not Past Due | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 4,023,120 | 3,639,775 |
| Commercial real estate [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Past Due 90 Days or More and Accruing | 0 | 3 |
| Current and Past Due Performing Loans | 5,188,655 | 5,337,647 |
| Commercial real estate [Member] | 30 to 59 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 0 | 2,992 |
| Commercial real estate [Member] | 60 to 89 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 0 | 0 |
| Commercial real estate [Member] | 90 Days or More [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 12,238 | 7,174 |
| Commercial real estate [Member] | Financial Asset, Not Past Due | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 5,176,417 | 5,327,481 |
| Loans to individuals [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Past Due 90 Days or More and Accruing | 45,740 | 48,368 |
| Current and Past Due Performing Loans | 3,918,484 | 3,763,552 |
| Loans to individuals [Member] | 30 to 59 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 28,034 | 33,986 |
| Loans to individuals [Member] | 60 to 89 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 13,889 | 18,635 |
| Loans to individuals [Member] | 90 Days or More [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 52,153 | 56,580 |
| Loans to individuals [Member] | Financial Asset, Not Past Due | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 3,824,408 | 3,654,351 |
| Loans to individuals [Member] | Residential mortgage [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Past Due 90 Days or More and Accruing | 597 | 36 |
| Current and Past Due Performing Loans | 2,370,293 | 2,160,640 |
| Loans to individuals [Member] | Residential mortgage [Member] | 30 to 59 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 6,756 | 6,340 |
| Loans to individuals [Member] | Residential mortgage [Member] | 60 to 89 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 1,812 | 1,494 |
| Loans to individuals [Member] | Residential mortgage [Member] | 90 Days or More [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 2,322 | 2,879 |
| Loans to individuals [Member] | Residential mortgage [Member] | Financial Asset, Not Past Due | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 2,359,403 | 2,149,927 |
| Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Past Due 90 Days or More and Accruing | 45,143 | 48,201 |
| Current and Past Due Performing Loans | 127,747 | 149,807 |
| Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | 30 to 59 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 20,956 | 25,085 |
| Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | 60 to 89 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 12,050 | 17,053 |
| Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | 90 Days or More [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 49,808 | 53,547 |
| Loans to individuals [Member] | Residential mortgage [Member] | US Government Agency Insured Loans [Member] | Financial Asset, Not Past Due | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 44,933 | 54,122 |
| Loans to individuals [Member] | Personal [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Past Due 90 Days or More and Accruing | 0 | 131 |
| Current and Past Due Performing Loans | 1,420,444 | 1,453,105 |
| Loans to individuals [Member] | Personal [Member] | 30 to 59 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 322 | 2,561 |
| Loans to individuals [Member] | Personal [Member] | 60 to 89 Days [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 27 | 88 |
| Loans to individuals [Member] | Personal [Member] | 90 Days or More [Member] | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | 23 | 154 |
| Loans to individuals [Member] | Personal [Member] | Financial Asset, Not Past Due | ||
| Financing Receivable, Past Due [Line Items] | ||
| Current and Past Due Performing Loans | $ 1,420,072 | $ 1,450,302 |
Mortgage Banking Activities, Components of Loans Held For Sale (Details) - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended | |
|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Dec. 31, 2023 |
|
| Schedule of Residential Mortgage Loans Held For Sale [Line Items] | |||
| Residential mortgage loans held for sale, nonperforming | $ 0 | $ 0 | |
| Number of days for past due for loan to be considered nonperforming (in days) | 90 days | 90 days | |
| Credit losses recognized on residential mortgage loans held for sale | $ 0 | $ 0 | |
| Components of Residential Mortgage Loans Held for Sale [Abstract] | |||
| Unpaid principal balance | 94,473 | $ 56,922 | |
| Residential mortgage loans held for sale, Fair value | 94,067 | 56,457 | |
| Residential mortgage loans held for sale | $ 95,494 | $ 56,935 | |
| Residential Mortgage Loan Commitments [Member] | Not Designated as Hedging Instrument [Member] | |||
| Schedule of Residential Mortgage Loans Held For Sale [Line Items] | |||
| General number of days outstanding for residential mortgage commitments, minimum (in days) | 60 days | 60 days | |
| General number of days outstanding for residential mortgage commitments, maximum (in days) | 90 days | 90 days | |
| Components of Residential Mortgage Loans Held for Sale [Abstract] | |||
| Derivative, Notional Amount | $ 70,102 | $ 34,783 | |
| Derivative, Net fair value | $ 1,958 | $ 1,379 | |
| Forward sales contracts [Member] | Not Designated as Hedging Instrument [Member] | |||
| Schedule of Residential Mortgage Loans Held For Sale [Line Items] | |||
| General number of days for delivery of loans, for which the price is set by forward sales contracts, minimum (in days) | 60 days | 60 days | |
| General number of days for delivery for loans, for which the price is set by forward sales contracts, maximum (in days) | 90 days | 90 days | |
| Components of Residential Mortgage Loans Held for Sale [Abstract] | |||
| Derivative, Notional Amount | $ 109,000 | $ 75,448 | |
| Derivative, Net fair value | $ (531) | $ (901) | |
Mortgage Banking Activities Mortgage Banking Activities, Mortgage Banking Revenue (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|
| Mortgage Banking Revenue [Abstract] | ||||
| Net realized gains (losses) on sale of mortgage loans | $ 2,085 | $ (1,631) | $ 6,449 | $ (3,658) |
| Net change in unrealized gain (loss) on mortgage loans held for sale | (190) | (522) | 59 | (648) |
| Net change in the fair value of mortgage loan commitments | 13 | (288) | 579 | 487 |
| Net change in the fair value of forward sales contracts | (345) | 554 | 370 | 1,015 |
| Total production revenue (loss) | 1,563 | (1,887) | 7,457 | (2,804) |
| Servicing revenue | 16,809 | 15,243 | 48,510 | 45,668 |
| Total mortgage banking revenue | $ 18,372 | $ 13,356 | $ 55,967 | $ 42,864 |
Mortgage Banking Activities, Mortgage Servicing Rights (Details) |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
|
Sep. 30, 2024
USD ($)
|
Sep. 30, 2023
USD ($)
|
Sep. 30, 2024
USD ($)
|
Sep. 30, 2023
USD ($)
|
Dec. 31, 2023
USD ($)
|
|
| Summary of Mortgage Servicing Rights [Abstract] | |||||
| Number of residential mortgage loans serviced for others | 125,104 | 125,104 | 115,967 | ||
| Outstanding principal balance of residential mortgage loans serviced for others | $ 22,084,578,000 | $ 22,084,578,000 | $ 20,382,192,000 | ||
| Weighted average interest rate | 3.70% | 3.70% | 3.64% | ||
| Remaining term (in months) | 277 months | 280 months | |||
| Servicing Asset at Fair Value, Amount [Roll Forward] | |||||
| Beginning balance | $ 333,246,000 | $ 304,722,000 | $ 293,884,000 | $ 277,608,000 | $ 277,608,000 |
| Additions | 3,842,000 | 3,154,000 | 10,812,000 | 9,757,000 | |
| Acquisitions | 3,334,000 | 2,669,000 | 34,755,000 | 33,807,000 | |
| Changes due to principal payments | (8,049,000) | (7,202,000) | (21,508,000) | (21,031,000) | |
| Change in fair value due to market assumption changes | (16,453,000) | 8,039,000 | (2,023,000) | 11,241,000 | |
| Ending balance | $ 315,920,000 | $ 311,382,000 | $ 315,920,000 | $ 311,382,000 | $ 293,884,000 |
| Servicing Assets at Fair Value, Assumptions Used to Estimate Fair Value [Abstract] | |||||
| Discount rate - risk-free rate plus a market premium (in hundredths) | 8.92% | 9.72% | |||
| Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed | 7.46% | 7.34% | |||
| Loan servicing costs - annually per loan based upon loan type, performing, minimum (in dollars per loan) | $ 73 | $ 69 | |||
| Loan servicing costs - annually per loan based upon loan type, performing, maximum (in dollars per loan) | 94 | 94 | |||
| Loan servicing costs - annually per loan based upon loan type, delinquent, minimum (in dollars per loan) | 150 | 150 | |||
| Loan servicing costs - annually per loan based upon loan type, delinquent, maximum (in dollars per loan) | 500 | 500 | |||
| Loan servicing costs - annually per loan based upon loan type, foreclosure, minimum (in dollars per loan) | 875 | 875 | |||
| Loan servicing costs - annually per loan based upon loan type, foreclosure, maximum (in dollars per loan) | $ 8,000 | $ 8,000 | |||
| Escrow earnings rate - indexed to rates paid on deposit accounts with comparable average life (in hundredths) | 3.63% | 3.90% | |||
| Primary secondary mortgage rate spread | 115 | 115 | 105 | ||
| Delinquency rate | 2.09% | 2.06% | |||
Commitments and Contingent Liabilities (Details) - USD ($) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
Oct. 11, 2024 |
Apr. 08, 2024 |
Sep. 30, 2024 |
|
| Bank Participation in Fraudulent Sale of Securities by Principals [Member] | Pending Litigation [Member] | |||
| Loss Contingency [Abstract] | |||
| Outstanding principal accrued interest and other amounts upon sale of facilities securing payment of the bonds | $ 33 | ||
| Loss Contingency, Damages Sought, Value | 3 | ||
| Gain (Loss) from Litigation Settlement [Abstract] | |||
| Outstanding principal accrued interest and other amounts upon sale of facilities securing payment of the bonds | 33 | ||
| Loss Contingency, Damages Sought, Value | $ 3 | ||
| Subsequent Event [Member] | |||
| Loss Contingency [Abstract] | |||
| Escrow Deposit by Visa for Potential Commitments | $ 1,500 | ||
| Loss Contingencies [Line Items] | |||
| Escrow Deposit by Visa for Potential Commitments | $ 1,500 | ||
| Visa Membership | |||
| Loss Contingency [Abstract] | |||
| Potential Exchange Offer Program Conversion Percentage | 5000.00% | ||
| Common Stock Class B Shares Owned | 252,233 | ||
| Common Stock Owned | 50,053 | ||
| Common Stock Class B-2 Shares Owned | 126,116 | ||
| Common Stock Sold | 41,148 | ||
| Common Stock Donated | 8,905 | ||
| Loss Contingencies [Line Items] | |||
| Potential Exchange Offer Program Conversion Percentage | 5000.00% | ||
| Common Stock Class B Shares Owned | 252,233 | ||
| Common Stock Owned | 50,053 | ||
| Common Stock Class B-2 Shares Owned | 126,116 | ||
| Common Stock Sold | 41,148 | ||
| Common Stock Donated | 8,905 |
Commitments and Contingent Liabilities Variable Interest Entities (Details) $ in Millions |
Sep. 30, 2024
USD ($)
|
|---|---|
| Variable Interest Entity [Line Items] | |
| Investment, Proportional Amortization Method, Elected, Amount | Other Assets |
| Other Liabilities [Member] | |
| Variable Interest Entity [Line Items] | |
| Investment Program, Proportional Amortization Method, Elected, Commitment | $ 106 |
Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Oct. 29, 2024 |
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|
| Dividends declared (in dollars per share) | $ 0.55 | $ 0.54 | $ 1.65 | $ 1.62 | |
| Schedule of Accumulated Other Income (Loss) [Abstract] | |||||
| Balance, Beginning of Period | $ (599,100) | $ (836,955) | |||
| Net change in unrealized gain (loss) | $ 341,185 | $ (135,614) | 263,436 | (171,977) | |
| Interest revenue, Investment securities | 11,431 | 14,912 | 35,641 | 46,996 | |
| Loss on available-for-sale securities, net | 691 | 0 | 45,828 | 3,010 | |
| Other comprehensive income, before income taxes | 353,307 | (120,702) | 344,905 | (121,971) | |
| Federal and state income taxes | 83,094 | (28,389) | 81,094 | (29,941) | |
| Other comprehensive income, net of income taxes | 270,213 | (92,313) | 263,811 | (92,030) | |
| Balance, End of Period | (335,289) | (928,985) | (335,289) | (928,985) | |
| Accumulated Net Unrealized Gain (Loss) on Available for Sale Securities [Member] | |||||
| Schedule of Accumulated Other Income (Loss) [Abstract] | |||||
| Balance, Beginning of Period | (473,212) | (664,618) | |||
| Net change in unrealized gain (loss) | 263,436 | (171,977) | |||
| Interest revenue, Investment securities | 0 | 0 | |||
| Loss on available-for-sale securities, net | 45,828 | 3,010 | |||
| Other comprehensive income, before income taxes | 309,264 | (168,967) | |||
| Federal and state income taxes | 72,711 | (40,735) | |||
| Other comprehensive income, net of income taxes | 236,553 | (128,232) | |||
| Balance, End of Period | (236,659) | (792,850) | (236,659) | (792,850) | |
| AOCI, Accumulated Gain (Loss), Debt Securities, Investment Securities Transferred from Available-for-sale, Parent | |||||
| Schedule of Accumulated Other Income (Loss) [Abstract] | |||||
| Balance, Beginning of Period | (125,888) | (172,337) | |||
| Net change in unrealized gain (loss) | 0 | 0 | |||
| Interest revenue, Investment securities | 35,641 | 46,996 | |||
| Loss on available-for-sale securities, net | 0 | 0 | |||
| Other comprehensive income, before income taxes | 35,641 | 46,996 | |||
| Federal and state income taxes | 8,383 | 10,794 | |||
| Other comprehensive income, net of income taxes | 27,258 | 36,202 | |||
| Balance, End of Period | $ (98,630) | $ (136,135) | $ (98,630) | $ (136,135) | |
| Subsequent Event [Member] | |||||
| Dividends declared (in dollars per share) | $ 0.57 | ||||
| Subsequent Event [Member] | Dividend Declared | |||||
| Dividends Payable, Date Declared | Oct. 29, 2024 | ||||
| Dividends Payable, Date to be Paid | Nov. 27, 2024 | ||||
| Dividends Payable, Date of Record | Nov. 15, 2024 | ||||
Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|
| Numerator: [Abstract] | ||||
| Net income attributable to BOK Financial Corp. shareholders | $ 139,999 | $ 134,495 | $ 387,415 | $ 448,171 |
| Less: Earnings allocated to participating securities | 1,383 | 1,104 | 3,660 | 3,561 |
| Numerator for basic earnings per share – income available to common shareholders | 138,616 | 133,391 | 383,755 | 444,610 |
| Effect of reallocating undistributed earnings of participating securities | 0 | 0 | 0 | 0 |
| Numerator for diluted earnings per share – income available to common shareholders | $ 138,616 | $ 133,391 | $ 383,755 | $ 444,610 |
| Denominator: [Abstract] | ||||
| Weighted average shares outstanding (in shares) | 64,122,351 | 66,090,988 | 64,425,159 | 66,484,557 |
| Less: Participating securities included in weighted average shares (in shares) | 632,770 | 542,681 | 594,971 | 529,263 |
| Denominator for basic earnings per common share (in shares) | 63,489,581 | 65,548,307 | 63,830,188 | 65,955,294 |
| Dilutive effect of employee stock compensation plans (in shares) | 0 | 0 | 0 | 0 |
| Denominator for diluted earnings per common share (in shares) | 63,489,581 | 65,548,307 | 63,830,188 | 65,955,294 |
| Basic earnings per share | $ 2.18 | $ 2.04 | $ 6.01 | $ 6.74 |
| Diluted earnings per share | $ 2.18 | $ 2.04 | $ 6.01 | $ 6.74 |
Reportable Segments (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|
| Segment Reporting Information [Line Items] | ||||
| Net interest income from external sources | $ 308,119 | $ 300,896 | $ 897,712 | $ 975,505 |
| Net interest income (expense) from internal sources | 0 | 0 | 0 | 0 |
| Net interest income | 308,119 | 300,896 | 897,712 | 975,505 |
| Net loans charged off and provisions for credit losses | 2,000 | 7,000 | 18,000 | 40,000 |
| Net interest income after provision for credit losses | 306,119 | 293,896 | 879,712 | 935,505 |
| Other operating revenue | 208,192 | 198,152 | 629,597 | 585,066 |
| Other operating expense | 341,025 | 324,313 | 1,018,099 | 948,798 |
| Net direct contribution | 173,286 | 167,735 | 491,210 | 571,773 |
| Gain (loss) on financial instruments, net | 0 | 0 | 0 | 0 |
| Change in fair value of mortgage servicing rights | 0 | 0 | 0 | 0 |
| Gain (loss) on repossessed assets, net | 0 | 0 | 0 | 0 |
| Corporate expense allocations | 0 | 0 | 0 | 0 |
| Net income before taxes | 173,286 | 167,735 | 491,210 | 571,773 |
| Federal and state income taxes | 33,313 | 33,256 | 103,811 | 123,162 |
| Net income | 139,973 | 134,479 | 387,399 | 448,611 |
| Net income attributable to non-controlling interests | (26) | (16) | (16) | 440 |
| Net income attributable to BOK Financial Corp. shareholders | 139,999 | 134,495 | 387,415 | 448,171 |
| Average assets | 51,157,035 | 49,319,552 | 50,794,596 | 47,748,933 |
| Operating Segments [Member] | Commercial [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Net interest income from external sources | 277,777 | 298,313 | 843,882 | 886,283 |
| Net interest income (expense) from internal sources | (70,167) | (84,170) | (228,521) | (223,305) |
| Net interest income | 207,610 | 214,143 | 615,361 | 662,978 |
| Net loans charged off and provisions for credit losses | (1,329) | 4,904 | 8,965 | 10,980 |
| Net interest income after provision for credit losses | 208,939 | 209,239 | 606,396 | 651,998 |
| Other operating revenue | 59,320 | 59,153 | 163,862 | 184,826 |
| Other operating expense | 78,387 | 83,256 | 224,596 | 233,949 |
| Net direct contribution | 189,872 | 185,136 | 545,662 | 602,875 |
| Gain (loss) on financial instruments, net | 162 | (11) | 497 | 162 |
| Change in fair value of mortgage servicing rights | 0 | 0 | 0 | 0 |
| Gain (loss) on repossessed assets, net | 0 | (268) | 0 | 999 |
| Corporate expense allocations | 17,371 | 17,838 | 53,149 | 56,960 |
| Net income before taxes | 172,663 | 167,019 | 493,010 | 547,076 |
| Federal and state income taxes | 42,809 | 41,081 | 121,780 | 133,691 |
| Net income | 129,854 | 125,938 | 371,230 | 413,385 |
| Net income attributable to non-controlling interests | 0 | 0 | 0 | 0 |
| Net income attributable to BOK Financial Corp. shareholders | 129,854 | 125,938 | 371,230 | 413,385 |
| Average assets | 30,657,285 | 28,867,129 | 30,258,034 | 28,402,890 |
| Operating Segments [Member] | Consumer [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Net interest income from external sources | 5,955 | 11,386 | 19,497 | 50,360 |
| Net interest income (expense) from internal sources | 59,308 | 54,992 | 175,065 | 151,315 |
| Net interest income | 65,263 | 66,378 | 194,562 | 201,675 |
| Net loans charged off and provisions for credit losses | 1,779 | (73) | 4,834 | 2,240 |
| Net interest income after provision for credit losses | 63,484 | 66,451 | 189,728 | 199,435 |
| Other operating revenue | 36,699 | 30,716 | 109,158 | 93,603 |
| Other operating expense | 57,779 | 54,497 | 166,354 | 157,035 |
| Net direct contribution | 42,404 | 42,670 | 132,532 | 136,003 |
| Gain (loss) on financial instruments, net | 12,121 | (9,183) | (1,119) | (24,113) |
| Change in fair value of mortgage servicing rights | (16,453) | 8,039 | (2,023) | 11,241 |
| Gain (loss) on repossessed assets, net | 0 | 11 | 116 | 25 |
| Corporate expense allocations | 13,298 | 11,920 | 40,862 | 35,860 |
| Net income before taxes | 24,774 | 29,617 | 88,644 | 87,296 |
| Federal and state income taxes | 5,826 | 6,966 | 20,848 | 20,532 |
| Net income | 18,948 | 22,651 | 67,796 | 66,764 |
| Net income attributable to non-controlling interests | 0 | 0 | 0 | 0 |
| Net income attributable to BOK Financial Corp. shareholders | 18,948 | 22,651 | 67,796 | 66,764 |
| Average assets | 9,804,990 | 9,379,478 | 9,609,862 | 9,635,204 |
| Operating Segments [Member] | Wealth Management [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Net interest income from external sources | 10,640 | 7,622 | 20,251 | 32,977 |
| Net interest income (expense) from internal sources | 22,545 | 15,045 | 70,833 | 59,131 |
| Net interest income | 33,185 | 22,667 | 91,084 | 92,108 |
| Net loans charged off and provisions for credit losses | (159) | 9 | (174) | (60) |
| Net interest income after provision for credit losses | 33,344 | 22,658 | 91,258 | 92,168 |
| Other operating revenue | 112,457 | 123,614 | 344,369 | 355,568 |
| Other operating expense | 93,539 | 89,108 | 283,041 | 255,450 |
| Net direct contribution | 52,262 | 57,164 | 152,586 | 192,286 |
| Gain (loss) on financial instruments, net | 0 | 0 | 0 | 0 |
| Change in fair value of mortgage servicing rights | 0 | 0 | 0 | 0 |
| Gain (loss) on repossessed assets, net | 0 | 0 | 0 | 0 |
| Corporate expense allocations | 13,458 | 14,562 | 44,721 | 39,871 |
| Net income before taxes | 38,804 | 42,602 | 107,865 | 152,415 |
| Federal and state income taxes | 9,188 | 10,083 | 25,524 | 36,010 |
| Net income | 29,616 | 32,519 | 82,341 | 116,405 |
| Net income attributable to non-controlling interests | 0 | 0 | 0 | 0 |
| Net income attributable to BOK Financial Corp. shareholders | 29,616 | 32,519 | 82,341 | 116,405 |
| Average assets | 16,344,623 | 14,740,641 | 16,185,931 | 13,128,925 |
| Funds Management and Other [Member] | ||||
| Segment Reporting Information [Line Items] | ||||
| Net interest income from external sources | 13,747 | (16,425) | 14,082 | 5,885 |
| Net interest income (expense) from internal sources | (11,686) | 14,133 | (17,377) | 12,859 |
| Net interest income | 2,061 | (2,292) | (3,295) | 18,744 |
| Net loans charged off and provisions for credit losses | 1,709 | 2,160 | 4,375 | 26,840 |
| Net interest income after provision for credit losses | 352 | (4,452) | (7,670) | (8,096) |
| Other operating revenue | (284) | (15,331) | 12,208 | (48,931) |
| Other operating expense | 111,320 | 97,452 | 344,108 | 302,364 |
| Net direct contribution | (111,252) | (117,235) | (339,570) | (359,391) |
| Gain (loss) on financial instruments, net | (12,283) | 9,194 | 622 | 23,951 |
| Change in fair value of mortgage servicing rights | 16,453 | (8,039) | 2,023 | (11,241) |
| Gain (loss) on repossessed assets, net | 0 | 257 | (116) | (1,024) |
| Corporate expense allocations | (44,127) | (44,320) | (138,732) | (132,691) |
| Net income before taxes | (62,955) | (71,503) | (198,309) | (215,014) |
| Federal and state income taxes | (24,510) | (24,874) | (64,341) | (67,071) |
| Net income | (38,445) | (46,629) | (133,968) | (147,943) |
| Net income attributable to non-controlling interests | (26) | (16) | (16) | 440 |
| Net income attributable to BOK Financial Corp. shareholders | (38,419) | (46,613) | (133,952) | (148,383) |
| Average assets | $ (5,649,863) | $ (3,667,696) | $ (5,259,231) | $ (3,418,086) |
Fees and Commissions Revenue Fees and Commissions (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | $ 202,494 | $ 197,852 | $ 603,085 | $ 584,328 | ||||||||||||||||||||
| Fees and commissions revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 202,494 | 197,852 | 603,085 | 584,328 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 63,453 | [1] | 67,730 | [2] | 202,639 | [3] | 207,530 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 139,041 | [5] | 130,122 | [6] | 400,446 | [7] | 376,798 | [8] | ||||||||||||||||
| Brokerage and trading revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 50,391 | 62,312 | 162,587 | 179,714 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 34,699 | [1] | 45,138 | [2] | 119,977 | [3] | 138,703 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 15,692 | [5] | 17,174 | [6] | 42,610 | [7] | 41,011 | [8] | ||||||||||||||||
| Trading revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 23,642 | 34,460 | 88,794 | 98,979 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 23,642 | [1] | 34,460 | [2] | 88,794 | [3] | 98,979 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 0 | [5] | 0 | [6] | 0 | [7] | 0 | [8] | ||||||||||||||||
| Customer hedging revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 7,427 | 6,855 | 20,517 | 28,851 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 7,427 | [1] | 6,855 | [2] | 20,517 | [3] | 28,851 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 0 | [5] | 0 | [6] | 0 | [7] | 0 | [8] | ||||||||||||||||
| Retail brokerage revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 4,924 | 4,357 | 14,455 | 11,522 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 4,924 | [5] | 4,357 | [6] | 14,455 | [7] | 11,522 | [8] | ||||||||||||||||
| Insurance brokerage revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 2,703 | 8,866 | ||||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [2] | 0 | [4] | ||||||||||||||||||||
| Fees and commissions revenue from contracts with customers | 2,703 | [6] | 8,866 | [8] | ||||||||||||||||||||
| Investment banking revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 14,398 | 13,937 | 38,821 | 31,496 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 3,630 | [1] | 3,823 | [2] | 10,666 | [3] | 10,873 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 10,768 | [5] | 10,114 | [6] | 28,155 | [7] | 20,623 | [8] | ||||||||||||||||
| Transaction card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 28,495 | 26,387 | 81,234 | 78,011 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 28,495 | [5] | 26,387 | [6] | 81,234 | [7] | 78,011 | [8] | ||||||||||||||||
| TransFund EFT network revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 23,874 | 21,896 | 67,788 | 64,663 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 23,874 | [5] | 21,896 | [6] | 67,788 | [7] | 64,663 | [8] | ||||||||||||||||
| Merchant services revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 2,469 | 2,438 | 7,168 | 7,100 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 2,469 | [5] | 2,438 | [6] | 7,168 | [7] | 7,100 | [8] | ||||||||||||||||
| Corporate card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 2,152 | 2,053 | 6,278 | 6,248 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 2,152 | [5] | 2,053 | [6] | 6,278 | [7] | 6,248 | [8] | ||||||||||||||||
| Fiduciary and asset management revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 57,384 | 52,256 | 170,265 | 155,910 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 57,384 | [5] | 52,256 | [6] | 170,265 | [7] | 155,910 | [8] | ||||||||||||||||
| Personal trust revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 25,014 | 22,889 | 76,129 | 71,731 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 25,014 | [5] | 22,889 | [6] | 76,129 | [7] | 71,731 | [8] | ||||||||||||||||
| Corporate trust revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 9,091 | 8,713 | 26,997 | 23,574 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 9,091 | [5] | 8,713 | [6] | 26,997 | [7] | 23,574 | [8] | ||||||||||||||||
| Institutional trust & retirement plan services revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 17,056 | 16,883 | 49,723 | 43,843 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 17,056 | [5] | 16,883 | [6] | 49,723 | [7] | 43,843 | [8] | ||||||||||||||||
| Investment management services and other revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 6,223 | 3,771 | 17,416 | 16,762 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 6,223 | [5] | 3,771 | [6] | 17,416 | [7] | 16,762 | [8] | ||||||||||||||||
| Deposit service charges and fees [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 30,450 | 27,676 | 88,707 | 80,744 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 30,450 | [5] | 27,676 | [6] | 88,707 | [7] | 80,744 | [8] | ||||||||||||||||
| Commercial account service charge revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 16,896 | 14,709 | 49,423 | 42,936 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 16,896 | [5] | 14,709 | [6] | 49,423 | [7] | 42,936 | [8] | ||||||||||||||||
| Overdraft fee revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 5,876 | 5,492 | 16,769 | 15,506 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 5,876 | [5] | 5,492 | [6] | 16,769 | [7] | 15,506 | [8] | ||||||||||||||||
| Check card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 6,154 | 5,928 | 17,873 | 17,542 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 6,154 | [5] | 5,928 | [6] | 17,873 | [7] | 17,542 | [8] | ||||||||||||||||
| Automated service charge and other deposit fee revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 1,524 | 1,547 | 4,642 | 4,760 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 0 | [1] | 0 | [2] | 0 | [3] | 0 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 1,524 | [5] | 1,547 | [6] | 4,642 | [7] | 4,760 | [8] | ||||||||||||||||
| Mortgage banking revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 18,372 | 13,356 | 55,967 | 42,864 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 18,372 | [1] | 13,356 | [2] | 55,967 | [3] | 42,864 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 0 | [5] | 0 | [6] | 0 | [7] | 0 | [8] | ||||||||||||||||
| Mortgage production revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 1,563 | (1,887) | 7,457 | (2,804) | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 1,563 | [1] | (1,887) | [2] | 7,457 | [3] | (2,804) | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 0 | [5] | 0 | [6] | 0 | [7] | 0 | [8] | ||||||||||||||||
| Mortgage servicing revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 16,809 | 15,243 | 48,510 | 45,668 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 16,809 | [1] | 15,243 | [2] | 48,510 | [3] | 45,668 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 0 | [5] | 0 | [6] | 0 | [7] | 0 | [8] | ||||||||||||||||
| Other revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 17,402 | 15,865 | 44,325 | 47,085 | ||||||||||||||||||||
| Fees and commission revenue not from contracts with customers | 10,382 | [1] | 9,236 | [2] | 26,695 | [3] | 25,963 | [4] | ||||||||||||||||
| Fees and commissions revenue from contracts with customers | 7,020 | [5] | 6,629 | [6] | 17,630 | [7] | 21,122 | [8] | ||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Fees and commissions revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 55,865 | 57,858 | 160,215 | 173,397 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Brokerage and trading revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 7,823 | 11,911 | 22,899 | 38,449 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Trading revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Customer hedging revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 3,835 | 7,403 | 10,986 | 26,729 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Retail brokerage revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Insurance brokerage revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | ||||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Investment banking revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 3,988 | 4,508 | 11,913 | 11,720 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Transaction card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 27,499 | 25,236 | 78,136 | 74,481 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | TransFund EFT network revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 23,111 | 21,038 | 65,460 | 62,020 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Merchant services revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 2,461 | 2,430 | 7,143 | 7,074 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Corporate card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 1,927 | 1,768 | 5,533 | 5,387 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Fiduciary and asset management revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Personal trust revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Corporate trust revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Institutional trust & retirement plan services revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Investment management services and other revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Deposit service charges and fees [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 16,055 | 13,998 | 46,941 | 40,794 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Commercial account service charge revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 15,768 | 13,687 | 46,063 | 39,922 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Overdraft fee revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 30 | 26 | 93 | 83 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Check card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Automated service charge and other deposit fee revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 257 | 285 | 785 | 789 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Mortgage banking revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Mortgage production revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Mortgage servicing revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Commercial [Member] | Other revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 4,488 | 6,713 | 12,239 | 19,673 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Fees and commissions revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 36,699 | 30,715 | 109,158 | 93,657 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Brokerage and trading revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Trading revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Customer hedging revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Retail brokerage revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Insurance brokerage revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | ||||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Investment banking revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Transaction card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 787 | 883 | 2,406 | 2,716 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | TransFund EFT network revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 779 | 875 | 2,381 | 2,690 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Merchant services revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 8 | 8 | 25 | 26 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Corporate card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Fiduciary and asset management revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Personal trust revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Corporate trust revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Institutional trust & retirement plan services revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Investment management services and other revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Deposit service charges and fees [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 13,696 | 13,132 | 39,691 | 38,215 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Commercial account service charge revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 550 | 524 | 1,633 | 1,553 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Overdraft fee revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 5,805 | 5,427 | 16,573 | 15,321 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Check card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 6,154 | 5,926 | 17,873 | 17,540 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Automated service charge and other deposit fee revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 1,187 | 1,255 | 3,612 | 3,801 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Mortgage banking revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 19,136 | 13,974 | 58,109 | 44,608 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Mortgage production revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 1,563 | (1,887) | 7,457 | (2,804) | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Mortgage servicing revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 17,573 | 15,861 | 50,652 | 47,412 | ||||||||||||||||||||
| Operating Segments [Member] | Consumer [Member] | Other revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 3,080 | 2,726 | 8,952 | 8,118 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Fees and commissions revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 112,457 | 123,614 | 344,369 | 355,575 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Brokerage and trading revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 41,788 | 50,808 | 138,036 | 138,943 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Trading revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 23,642 | 34,461 | 88,794 | 98,980 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Customer hedging revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 2,812 | (141) | 7,879 | (200) | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Retail brokerage revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 4,924 | 4,357 | 14,455 | 11,522 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Insurance brokerage revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 2,703 | 8,866 | ||||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Investment banking revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 10,410 | 9,428 | 26,908 | 19,775 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Transaction card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 113 | 161 | 416 | 488 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | TransFund EFT network revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | (21) | (18) | (58) | (52) | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Merchant services revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Corporate card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 134 | 179 | 474 | 540 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Fiduciary and asset management revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 57,385 | 52,255 | 170,265 | 155,931 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Personal trust revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 25,014 | 22,890 | 76,129 | 71,732 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Corporate trust revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 9,091 | 8,713 | 26,997 | 23,574 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Institutional trust & retirement plan services revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 17,057 | 16,883 | 49,723 | 43,843 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Investment management services and other revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 6,223 | 3,769 | 17,416 | 16,782 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Deposit service charges and fees [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 699 | 545 | 2,075 | 1,734 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Commercial account service charge revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 578 | 496 | 1,727 | 1,461 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Overdraft fee revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 41 | 39 | 103 | 101 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Check card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Automated service charge and other deposit fee revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 80 | 10 | 245 | 172 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Mortgage banking revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Mortgage production revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Mortgage servicing revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Operating Segments [Member] | Wealth Management [Member] | Other revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 12,472 | 19,845 | 33,577 | 58,479 | ||||||||||||||||||||
| Funds Management and Other [Member] | Fees and commissions revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | (2,527) | (14,335) | (10,657) | (38,301) | ||||||||||||||||||||
| Funds Management and Other [Member] | Brokerage and trading revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 780 | (407) | 1,652 | 2,322 | ||||||||||||||||||||
| Funds Management and Other [Member] | Trading revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | (1) | 0 | (1) | ||||||||||||||||||||
| Funds Management and Other [Member] | Customer hedging revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 780 | (407) | 1,652 | 2,322 | ||||||||||||||||||||
| Funds Management and Other [Member] | Retail brokerage revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Funds Management and Other [Member] | Insurance brokerage revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | ||||||||||||||||||||||
| Funds Management and Other [Member] | Investment banking revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 1 | 0 | 1 | ||||||||||||||||||||
| Funds Management and Other [Member] | Transaction card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 96 | 107 | 276 | 326 | ||||||||||||||||||||
| Funds Management and Other [Member] | TransFund EFT network revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 5 | 1 | 5 | 5 | ||||||||||||||||||||
| Funds Management and Other [Member] | Merchant services revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Funds Management and Other [Member] | Corporate card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 91 | 106 | 271 | 321 | ||||||||||||||||||||
| Funds Management and Other [Member] | Fiduciary and asset management revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | (1) | 1 | 0 | (21) | ||||||||||||||||||||
| Funds Management and Other [Member] | Personal trust revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | (1) | 0 | (1) | ||||||||||||||||||||
| Funds Management and Other [Member] | Corporate trust revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Funds Management and Other [Member] | Institutional trust & retirement plan services revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | (1) | 0 | 0 | 0 | ||||||||||||||||||||
| Funds Management and Other [Member] | Investment management services and other revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 2 | 0 | (20) | ||||||||||||||||||||
| Funds Management and Other [Member] | Deposit service charges and fees [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 1 | 0 | 1 | ||||||||||||||||||||
| Funds Management and Other [Member] | Commercial account service charge revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 2 | 0 | 0 | ||||||||||||||||||||
| Funds Management and Other [Member] | Overdraft fee revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 1 | ||||||||||||||||||||
| Funds Management and Other [Member] | Check card revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 2 | 0 | 2 | ||||||||||||||||||||
| Funds Management and Other [Member] | Automated service charge and other deposit fee revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | (3) | 0 | (2) | ||||||||||||||||||||
| Funds Management and Other [Member] | Mortgage banking revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | (764) | (618) | (2,142) | (1,744) | ||||||||||||||||||||
| Funds Management and Other [Member] | Mortgage production revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | 0 | 0 | 0 | 0 | ||||||||||||||||||||
| Funds Management and Other [Member] | Mortgage servicing revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | (764) | (618) | (2,142) | (1,744) | ||||||||||||||||||||
| Funds Management and Other [Member] | Other revenue [Member] | ||||||||||||||||||||||||
| Disaggregation of Revenue [Line Items] | ||||||||||||||||||||||||
| Total fees and commissions | $ (2,638) | $ (13,419) | $ (10,443) | $ (39,185) | ||||||||||||||||||||
| ||||||||||||||||||||||||
Fair Value Measurements, Fair Value Of Financial Instruments as Measured On a Recurring Basis (Details) - USD ($) $ in Thousands |
Sep. 30, 2024 |
Jun. 30, 2024 |
Dec. 31, 2023 |
Sep. 30, 2023 |
Jun. 30, 2023 |
Dec. 31, 2022 |
||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | $ 5,139,725 | $ 5,193,505 | ||||||||||||||||||
| Available-for-sale securities | 13,015,986 | 12,286,681 | ||||||||||||||||||
| Fair value option securities | 19,172 | 20,671 | ||||||||||||||||||
| Mortgage servicing rights | 315,920 | $ 333,246 | 293,884 | $ 311,382 | $ 304,722 | $ 277,608 | ||||||||||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 334,382 | 410,304 | ||||||||||||||||||
| Liabilities: [Abstract] | ||||||||||||||||||||
| Derivative contracts, net of cash collateral, Liabilities, Fair Value | 402,559 | 587,473 | ||||||||||||||||||
| U.S. government securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 332,466 | 10,959 | ||||||||||||||||||
| Residential agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 4,672,427 | 5,105,137 | ||||||||||||||||||
| Available-for-sale securities | 8,577,928 | 6,834,720 | ||||||||||||||||||
| Fair value option securities | 19,172 | 20,671 | ||||||||||||||||||
| Municipal securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 76,004 | 37,413 | ||||||||||||||||||
| Available-for-sale securities | 228,171 | 502,833 | ||||||||||||||||||
| U.S. Treasury [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 951 | 925 | ||||||||||||||||||
| Residential non-agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 838,783 | 799,877 | ||||||||||||||||||
| Commercial agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 3,369,680 | 4,147,853 | ||||||||||||||||||
| Other debt securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 58,828 | 39,996 | ||||||||||||||||||
| Available-for-sale securities | 473 | 473 | ||||||||||||||||||
| Fair Value, Recurring [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 5,139,725 | 5,193,505 | ||||||||||||||||||
| Available-for-sale securities | 13,015,986 | 12,286,681 | ||||||||||||||||||
| Residential mortgage loans held for sale | 95,494 | [1] | 56,935 | [2] | ||||||||||||||||
| Mortgage servicing rights | 315,920 | [3] | 293,884 | [4] | ||||||||||||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 334,382 | [5] | 410,304 | [6] | ||||||||||||||||
| Liabilities: [Abstract] | ||||||||||||||||||||
| Derivative contracts, net of cash collateral, Liabilities, Fair Value | 402,559 | [5] | 587,473 | [6] | ||||||||||||||||
| Fair Value, Recurring [Member] | U.S. government securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 332,466 | 10,959 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Residential agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 4,672,427 | 5,105,137 | ||||||||||||||||||
| Available-for-sale securities | 8,577,928 | 6,834,720 | ||||||||||||||||||
| Fair value option securities | 19,172 | 20,671 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Municipal securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 76,004 | 37,413 | ||||||||||||||||||
| Available-for-sale securities | 228,171 | 502,833 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Other trading securities | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 58,828 | 39,996 | ||||||||||||||||||
| Fair Value, Recurring [Member] | U.S. Treasury [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 951 | 925 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Residential non-agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 838,783 | 799,877 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Commercial agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 3,369,680 | 4,147,853 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Other debt securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 473 | 473 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 308,370 | 9,017 | ||||||||||||||||||
| Available-for-sale securities | 951 | 925 | ||||||||||||||||||
| Residential mortgage loans held for sale | 0 | [1] | 0 | [2] | ||||||||||||||||
| Mortgage servicing rights | 0 | [3] | 0 | [4] | ||||||||||||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 1,426 | [5] | 0 | [6] | ||||||||||||||||
| Liabilities: [Abstract] | ||||||||||||||||||||
| Derivative contracts, net of cash collateral, Liabilities, Fair Value | 0 | [5] | 2,607 | [6] | ||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. government securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 308,370 | 9,017 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Residential agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 0 | 0 | ||||||||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||||||||||
| Fair value option securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Municipal securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 0 | 0 | ||||||||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other trading securities | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. Treasury [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 951 | 925 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Residential non-agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Commercial agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other debt securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 4,831,355 | 5,184,488 | ||||||||||||||||||
| Available-for-sale securities | 13,014,562 | 12,285,283 | ||||||||||||||||||
| Residential mortgage loans held for sale | 88,161 | [1] | 49,749 | [2] | ||||||||||||||||
| Mortgage servicing rights | 0 | [3] | 0 | [4] | ||||||||||||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 332,956 | [5] | 410,304 | [6] | ||||||||||||||||
| Liabilities: [Abstract] | ||||||||||||||||||||
| Derivative contracts, net of cash collateral, Liabilities, Fair Value | 402,559 | [5] | 584,866 | [6] | ||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. government securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 24,096 | 1,942 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Residential agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 4,672,427 | 5,105,137 | ||||||||||||||||||
| Available-for-sale securities | 8,577,928 | 6,834,720 | ||||||||||||||||||
| Fair value option securities | 19,172 | 20,671 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Municipal securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 76,004 | 37,413 | ||||||||||||||||||
| Available-for-sale securities | 228,171 | 502,833 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other trading securities | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 58,828 | 39,996 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Treasury [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Residential non-agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 838,783 | 799,877 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Commercial agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 3,369,680 | 4,147,853 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other debt securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 0 | 0 | ||||||||||||||||||
| Available-for-sale securities | 473 | 473 | ||||||||||||||||||
| Residential mortgage loans held for sale | 7,333 | [1] | 7,186 | [2] | ||||||||||||||||
| Mortgage servicing rights | 315,920 | [3] | 293,884 | [4] | ||||||||||||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | $ 0 | [5] | $ 0 | [6] | ||||||||||||||||
| Liquidity Discount on Mortgage Loans Qualifying for Sale to US Govt Agencies | 82.54% | 77.74% | ||||||||||||||||||
| Liabilities: [Abstract] | ||||||||||||||||||||
| Derivative contracts, net of cash collateral, Liabilities, Fair Value | $ 0 | [5] | $ 0 | [6] | ||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | U.S. government securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Residential agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 0 | 0 | ||||||||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||||||||||
| Fair value option securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Municipal securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 0 | 0 | ||||||||||||||||||
| Available-for-sale securities | 0 | |||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other trading securities | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Trading securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | U.S. Treasury [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Residential non-agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Commercial agency mortgage-backed securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||||||||||
| Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other debt securities [Member] | ||||||||||||||||||||
| Assets: [Abstract] | ||||||||||||||||||||
| Available-for-sale securities | $ 473 | $ 473 | ||||||||||||||||||
| ||||||||||||||||||||
Fair Value Measurements, Fair Value Measured On a Nonrecurring Basis (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||
| Other gains (losses), net | $ 13,087 | $ 1,474 | $ 74,731 | $ 16,343 |
| Fair Value, Nonrecurring [Member] | Nonaccruing Loans [Member] | ||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||
| Gross charge-offs against allowance for loan losses | 400 | 2,135 | 6,743 | 4,932 |
| Other gains (losses), net | 0 | 0 | 0 | 0 |
| Fair Value, Nonrecurring [Member] | Real estate and other repossessed assets [Member] | ||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||
| Gross charge-offs against allowance for loan losses | 0 | 0 | ||
| Other gains (losses), net | (5) | (5) | ||
| Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Nonaccruing Loans [Member] | ||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||
| Assets, Fair Value Disclosure | 0 | 0 | 0 | 0 |
| Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] | Real estate and other repossessed assets [Member] | ||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||
| Assets, Fair Value Disclosure | 0 | 0 | ||
| Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Nonaccruing Loans [Member] | ||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||
| Assets, Fair Value Disclosure | 62 | 0 | 62 | 0 |
| Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member] | Real estate and other repossessed assets [Member] | ||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||
| Assets, Fair Value Disclosure | 23 | 23 | ||
| Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Nonaccruing Loans [Member] | Management knowledge of industry and non-real estate collateral | Discounted Cash Flow [Member] | ||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||
| Assets, Fair Value Disclosure | 5,100 | $ 796 | 5,100 | $ 796 |
| Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Real estate and other repossessed assets [Member] | Management knowledge of industry and non-real estate collateral | Discounted Cash Flow [Member] | ||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | ||||
| Assets, Fair Value Disclosure | $ 0 | $ 0 | ||
Fair Value Measurements Fair Value Measurement, Measured On Non-Recurring Basis, Signfiicant Unobservable Inputs, Quantitative Information (Details) - Fair Value, Nonrecurring [Member] - Nonaccruing Loans [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands |
Sep. 30, 2024 |
Sep. 30, 2023 |
||||||
|---|---|---|---|---|---|---|---|---|
| Discounted Cash Flow [Member] | Management knowledge of industry and non-real estate collateral | ||||||||
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | ||||||||
| Assets, Fair Value Disclosure | $ 5,100 | $ 796 | ||||||
| Minimum [Member] | ||||||||
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | ||||||||
| Fair Value of Impaired Loans as Percentage of Unpaid Principal Balance | 36.00% | [1] | 12.00% | [2] | ||||
| Maximum [Member] | ||||||||
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | ||||||||
| Fair Value of Impaired Loans as Percentage of Unpaid Principal Balance | 36.00% | [1] | 14.00% | [2] | ||||
| Weighted Average [Member] | ||||||||
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | ||||||||
| Fair Value of Impaired Loans as Percentage of Unpaid Principal Balance | 36.00% | [1] | 14.00% | [2] | ||||
| ||||||||
Fair Value Measurements, Financial Instruments (Details) - USD ($) $ in Thousands |
Sep. 30, 2024 |
Jun. 30, 2024 |
Dec. 31, 2023 |
Sep. 30, 2023 |
Jun. 30, 2023 |
Dec. 31, 2022 |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | $ 5,139,725 | $ 5,193,505 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 2,199,059 | 2,409,090 | ||||||||||
| Investment securities, Allowance for Credit Loss | (234) | [1] | (336) | [2] | ||||||||
| Investment Securities, Amortized Cost, After Allowance for Credit Loss | 2,198,825 | 2,408,754 | ||||||||||
| Available-for-sale securities | 13,015,986 | 12,286,681 | ||||||||||
| Fair value option securities | 19,172 | 20,671 | ||||||||||
| Residential mortgage loans held for sale | 95,494 | 56,935 | ||||||||||
| Loans | 23,985,061 | 23,904,968 | ||||||||||
| Allowance for loan losses | (284,456) | (277,123) | ||||||||||
| Loans, net of allowance | 23,700,605 | 23,627,845 | ||||||||||
| Mortgage servicing rights | 315,920 | $ 333,246 | 293,884 | $ 311,382 | $ 304,722 | $ 277,608 | ||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 334,382 | 410,304 | ||||||||||
| Time deposits | 3,837,956 | 3,012,022 | ||||||||||
| Subordinated debentures | 131,188 | 131,150 | ||||||||||
| Derivative contracts, net of cash collateral, Liabilities, Fair Value | 402,559 | 587,473 | ||||||||||
| Commercial [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 14,877,922 | 14,803,769 | ||||||||||
| Allowance for loan losses | (152,361) | (141,232) | ||||||||||
| Commercial real estate [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 5,188,655 | 5,337,647 | ||||||||||
| Allowance for loan losses | (91,538) | (94,718) | ||||||||||
| Loans to individuals [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 3,918,484 | 3,763,552 | ||||||||||
| Allowance for loan losses | (40,557) | (41,173) | ||||||||||
| U.S. government securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 332,466 | 10,959 | ||||||||||
| Residential agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 4,672,427 | 5,105,137 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 2,061,239 | 2,255,340 | ||||||||||
| Available-for-sale securities | 8,577,928 | 6,834,720 | ||||||||||
| Fair value option securities | 19,172 | 20,671 | ||||||||||
| Municipal securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 76,004 | 37,413 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 104,775 | 120,705 | ||||||||||
| Available-for-sale securities | 228,171 | 502,833 | ||||||||||
| U.S. Treasury [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Available-for-sale securities | 951 | 925 | ||||||||||
| Residential non-agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Available-for-sale securities | 838,783 | 799,877 | ||||||||||
| Commercial agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Debt Securities, Held-to-maturity, gross | 17,257 | 17,258 | ||||||||||
| Available-for-sale securities | 3,369,680 | 4,147,853 | ||||||||||
| Other debt securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 58,828 | 39,996 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 15,788 | 15,787 | ||||||||||
| Available-for-sale securities | 473 | 473 | ||||||||||
| Carrying (Reported) Amount, Fair Value Disclosure [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Cash and due from banks | 928,997 | 947,613 | ||||||||||
| Interest-bearing cash and cash equivalents | 547,043 | 400,652 | ||||||||||
| Trading securities | 5,139,725 | 5,193,505 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 2,070,099 | 2,244,489 | ||||||||||
| Investment securities, Allowance for Credit Loss | (234) | (336) | ||||||||||
| Investment Securities, Amortized Cost, After Allowance for Credit Loss | 2,069,865 | 2,244,153 | ||||||||||
| Available-for-sale securities | 13,015,986 | 12,286,681 | ||||||||||
| Residential mortgage loans held for sale | 95,494 | 56,935 | ||||||||||
| Loans | 23,985,061 | 23,904,968 | ||||||||||
| Allowance for loan losses | (284,456) | (277,123) | ||||||||||
| Loans, net of allowance | 23,700,605 | 23,627,845 | ||||||||||
| Mortgage servicing rights | 315,920 | 293,884 | ||||||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 334,382 | 410,304 | ||||||||||
| Deposits with no stated maturity | 33,389,162 | 31,007,679 | ||||||||||
| Time deposits | 3,837,956 | 3,012,022 | ||||||||||
| Other borrowed funds | 5,473,783 | 8,824,300 | ||||||||||
| Subordinated debentures | 131,188 | 131,150 | ||||||||||
| Derivative contracts, net of cash collateral, Liabilities, Fair Value | 402,559 | 587,473 | ||||||||||
| Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 14,877,922 | 14,803,769 | ||||||||||
| Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial real estate [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 5,188,655 | 5,337,647 | ||||||||||
| Carrying (Reported) Amount, Fair Value Disclosure [Member] | Loans to individuals [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 3,918,484 | 3,763,552 | ||||||||||
| Carrying (Reported) Amount, Fair Value Disclosure [Member] | U.S. government securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 332,466 | 10,959 | ||||||||||
| Carrying (Reported) Amount, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 4,672,427 | 5,105,137 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 1,933,393 | 2,092,083 | ||||||||||
| Available-for-sale securities | 8,577,928 | 6,834,720 | ||||||||||
| Fair value option securities | 19,172 | 20,671 | ||||||||||
| Carrying (Reported) Amount, Fair Value Disclosure [Member] | Municipal securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 76,004 | 37,413 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 104,775 | 120,705 | ||||||||||
| Available-for-sale securities | 228,171 | 502,833 | ||||||||||
| Carrying (Reported) Amount, Fair Value Disclosure [Member] | Other trading securities | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 58,828 | 39,996 | ||||||||||
| Carrying (Reported) Amount, Fair Value Disclosure [Member] | U.S. Treasury [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Available-for-sale securities | 951 | 925 | ||||||||||
| Carrying (Reported) Amount, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Available-for-sale securities | 838,783 | 799,877 | ||||||||||
| Carrying (Reported) Amount, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Debt Securities, Held-to-maturity, gross | 16,143 | 15,914 | ||||||||||
| Available-for-sale securities | 3,369,680 | 4,147,853 | ||||||||||
| Carrying (Reported) Amount, Fair Value Disclosure [Member] | Other debt securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Debt Securities, Held-to-maturity, gross | 15,788 | 15,787 | ||||||||||
| Available-for-sale securities | 473 | 473 | ||||||||||
| Estimate of Fair Value, Fair Value Disclosure [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Cash and due from banks | 928,997 | 947,613 | ||||||||||
| Interest-bearing cash and cash equivalents | 547,043 | 400,652 | ||||||||||
| Trading securities | 5,139,725 | 5,193,505 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 1,937,907 | 2,072,586 | ||||||||||
| Investment securities, Allowance for Credit Loss | 0 | 0 | ||||||||||
| Investment Securities, Amortized Cost, After Allowance for Credit Loss | 1,937,907 | 2,072,586 | ||||||||||
| Available-for-sale securities | 13,015,986 | 12,286,681 | ||||||||||
| Residential mortgage loans held for sale | 95,494 | 56,935 | ||||||||||
| Loans | 23,979,005 | 23,768,385 | ||||||||||
| Allowance for loan losses | 0 | 0 | ||||||||||
| Loans, net of allowance | 23,979,005 | 23,768,385 | ||||||||||
| Mortgage servicing rights | 315,920 | 293,884 | ||||||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 334,382 | 410,304 | ||||||||||
| Deposits with no stated maturity | 33,389,162 | 31,007,679 | ||||||||||
| Time deposits | 3,828,500 | 2,993,685 | ||||||||||
| Other borrowed funds | 5,473,783 | 8,824,299 | ||||||||||
| Subordinated debentures | 117,682 | 115,798 | ||||||||||
| Derivative contracts, net of cash collateral, Liabilities, Fair Value | 402,559 | 587,473 | ||||||||||
| Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 14,989,899 | 14,862,873 | ||||||||||
| Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 5,157,125 | 5,270,657 | ||||||||||
| Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 3,831,981 | 3,634,855 | ||||||||||
| Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. government securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 332,466 | 10,959 | ||||||||||
| Estimate of Fair Value, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 4,672,427 | 5,105,137 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 1,799,308 | 1,917,810 | ||||||||||
| Available-for-sale securities | 8,577,928 | 6,834,720 | ||||||||||
| Fair value option securities | 19,172 | 20,671 | ||||||||||
| Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 76,004 | 37,413 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 108,213 | 125,525 | ||||||||||
| Available-for-sale securities | 228,171 | 502,833 | ||||||||||
| Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 58,828 | 39,996 | ||||||||||
| Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Available-for-sale securities | 951 | 925 | ||||||||||
| Estimate of Fair Value, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Available-for-sale securities | 838,783 | 799,877 | ||||||||||
| Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Debt Securities, Held-to-maturity, gross | 15,603 | 15,067 | ||||||||||
| Available-for-sale securities | 3,369,680 | 4,147,853 | ||||||||||
| Estimate of Fair Value, Fair Value Disclosure [Member] | Other debt securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Debt Securities, Held-to-maturity, gross | 14,783 | 14,184 | ||||||||||
| Available-for-sale securities | 473 | 473 | ||||||||||
| Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Cash and due from banks | 928,997 | 947,613 | ||||||||||
| Interest-bearing cash and cash equivalents | 547,043 | 400,652 | ||||||||||
| Trading securities | 308,370 | 9,017 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 0 | 0 | ||||||||||
| Investment securities, Allowance for Credit Loss | 0 | 0 | ||||||||||
| Investment Securities, Amortized Cost, After Allowance for Credit Loss | 0 | 0 | ||||||||||
| Available-for-sale securities | 951 | 925 | ||||||||||
| Residential mortgage loans held for sale | 0 | 0 | ||||||||||
| Loans | 0 | 0 | ||||||||||
| Allowance for loan losses | 0 | 0 | ||||||||||
| Loans, net of allowance | 0 | 0 | ||||||||||
| Mortgage servicing rights | 0 | 0 | ||||||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 1,426 | 0 | ||||||||||
| Deposits with no stated maturity | 0 | 0 | ||||||||||
| Time deposits | 0 | 0 | ||||||||||
| Other borrowed funds | 0 | 0 | ||||||||||
| Subordinated debentures | 0 | 0 | ||||||||||
| Derivative contracts, net of cash collateral, Liabilities, Fair Value | 0 | 2,607 | ||||||||||
| Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. government securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 308,370 | 9,017 | ||||||||||
| Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 0 | 0 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 0 | 0 | ||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||
| Fair value option securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 0 | 0 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 0 | 0 | ||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Available-for-sale securities | 951 | 925 | ||||||||||
| Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Debt Securities, Held-to-maturity, gross | 0 | 0 | ||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other debt securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Debt Securities, Held-to-maturity, gross | 0 | 0 | ||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Cash and due from banks | 0 | 0 | ||||||||||
| Interest-bearing cash and cash equivalents | 0 | 0 | ||||||||||
| Trading securities | 4,831,355 | 5,184,488 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 1,841,531 | 1,959,366 | ||||||||||
| Investment securities, Allowance for Credit Loss | 0 | 0 | ||||||||||
| Investment Securities, Amortized Cost, After Allowance for Credit Loss | 1,841,531 | 1,959,366 | ||||||||||
| Available-for-sale securities | 13,014,562 | 12,285,283 | ||||||||||
| Residential mortgage loans held for sale | 88,161 | 49,749 | ||||||||||
| Loans | 0 | 0 | ||||||||||
| Allowance for loan losses | 0 | 0 | ||||||||||
| Loans, net of allowance | 0 | 0 | ||||||||||
| Mortgage servicing rights | 0 | 0 | ||||||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 332,956 | 410,304 | ||||||||||
| Deposits with no stated maturity | 0 | 0 | ||||||||||
| Time deposits | 0 | 0 | ||||||||||
| Other borrowed funds | 0 | 0 | ||||||||||
| Subordinated debentures | 117,682 | 115,798 | ||||||||||
| Derivative contracts, net of cash collateral, Liabilities, Fair Value | 402,559 | 584,866 | ||||||||||
| Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. government securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 24,096 | 1,942 | ||||||||||
| Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 4,672,427 | 5,105,137 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 1,799,308 | 1,917,810 | ||||||||||
| Available-for-sale securities | 8,577,928 | 6,834,720 | ||||||||||
| Fair value option securities | 19,172 | 20,671 | ||||||||||
| Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 76,004 | 37,413 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 11,837 | 12,305 | ||||||||||
| Available-for-sale securities | 228,171 | 502,833 | ||||||||||
| Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 58,828 | 39,996 | ||||||||||
| Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Available-for-sale securities | 838,783 | 799,877 | ||||||||||
| Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Debt Securities, Held-to-maturity, gross | 15,603 | 15,067 | ||||||||||
| Available-for-sale securities | 3,369,680 | 4,147,853 | ||||||||||
| Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other debt securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Debt Securities, Held-to-maturity, gross | 14,783 | 14,184 | ||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Cash and due from banks | 0 | 0 | ||||||||||
| Interest-bearing cash and cash equivalents | 0 | 0 | ||||||||||
| Trading securities | 0 | 0 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 96,376 | 113,220 | ||||||||||
| Investment securities, Allowance for Credit Loss | 0 | 0 | ||||||||||
| Investment Securities, Amortized Cost, After Allowance for Credit Loss | 96,376 | 113,220 | ||||||||||
| Available-for-sale securities | 473 | 473 | ||||||||||
| Residential mortgage loans held for sale | 7,333 | 7,186 | ||||||||||
| Loans | 23,979,005 | 23,768,385 | ||||||||||
| Allowance for loan losses | 0 | 0 | ||||||||||
| Loans, net of allowance | 23,979,005 | 23,768,385 | ||||||||||
| Mortgage servicing rights | 315,920 | 293,884 | ||||||||||
| Derviative contracts, net of cash collateral, Assets, Fair value | 0 | 0 | ||||||||||
| Deposits with no stated maturity | 33,389,162 | 31,007,679 | ||||||||||
| Time deposits | 3,828,500 | 2,993,685 | ||||||||||
| Other borrowed funds | 5,473,783 | 8,824,299 | ||||||||||
| Subordinated debentures | 0 | 0 | ||||||||||
| Derivative contracts, net of cash collateral, Liabilities, Fair Value | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 14,989,899 | 14,862,873 | ||||||||||
| Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial real estate [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 5,157,125 | 5,270,657 | ||||||||||
| Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Loans to individuals [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Loans | 3,831,981 | 3,634,855 | ||||||||||
| Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. government securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 0 | 0 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 0 | 0 | ||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||
| Fair value option securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Municipal securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 0 | 0 | ||||||||||
| Debt Securities, Held-to-maturity, gross | 96,376 | 113,220 | ||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other trading securities | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Trading securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Residential non-agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Commercial agency mortgage-backed securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Debt Securities, Held-to-maturity, gross | 0 | 0 | ||||||||||
| Available-for-sale securities | 0 | 0 | ||||||||||
| Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member] | Other debt securities [Member] | ||||||||||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||||||||||
| Debt Securities, Held-to-maturity, gross | 0 | 0 | ||||||||||
| Available-for-sale securities | $ 473 | $ 473 | ||||||||||
| ||||||||||||