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Derivative Financial Instruments (Tables) | 6 Months Ended
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Jun. 30, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of Notional Amounts and Estimated Fair Values of Interest Rate Derivative Contracts Outstanding | The notional amounts and estimated fair values of interest rate derivative contracts outstanding are presented in the following table. The fair values of these contracts are estimated utilizing internal valuation methods with observable market data inputs, or as determined by the Chicago Mercantile Exchange (“CME”) for centrally cleared derivative contracts. CME rules legally characterize variation margin payments for centrally cleared derivatives as settlements of the derivatives' exposure rather than collateral. As a result, the variation margin payment and the related derivative instruments are considered a single unit of account for accounting and financial reporting purposes. Variation margin, as determined by the CME, is settled daily. As a result, derivative contracts that clear through the CME have an estimated fair value of zero as of June 30, 2025 and December 31, 2024.
| June 30, 2025 |  | December 31, 2024
| Notional Amount |  | Estimated Fair Value |  | Notional Amount |  | Estimated Fair Value
Non-hedging interest rate derivatives: |  |  |  |  |  |  |
Financial institution counterparties: |  |  |  |  |  |  |
Loan/lease interest rate swaps – assets | 821,359 |  |  | $ | 39,336 |  |  | 1,213,519 |  |  | $ | 63,001 |
Loan/lease interest rate swaps – liabilities | 1,100,546 |  |  | (21,782) |  |  | 663,078 |  |  | (9,068) |
Loan/lease interest rate caps – assets | 196,091 |  |  | 4,563 |  |  | 205,164 |  |  | 7,053 |
Customer counterparties: |  |  |  |  |  |  |
Loan/lease interest rate swaps – assets | 1,100,546 |  |  | 21,783 |  |  | 663,078 |  |  | 9,068 |
Loan/lease interest rate swaps – liabilities | 821,359 |  |  | (39,336) |  |  | 1,213,519 |  |  | (63,000) |
Loan/lease interest rate caps – liabilities | 196,091 |  |  | (4,564) |  |  | 205,164 |  |  | (7,054) |
Schedule of Weighted-Average Rates Paid and Received for Interest Rate Swaps Outstanding | The weighted-average rates paid and received for interest rate swaps outstanding at June 30, 2025, were as follows:
| Weighted-Average
| Interest Rate Paid |  | Interest Rate Received
Interest rate swaps: |  |  |
Non-hedging interest rate swaps – financial institution counterparties | 5.16 | % |  | 6.10 | %
Non-hedging interest rate swaps – customer counterparties | 6.10 |  |  | 5.16 |
Schedule of Notional Amounts and Estimated Fair Values of Commodity Derivative Positions | The notional amounts and estimated fair values of non-hedging commodity derivative contracts outstanding are presented in the following table. The fair values of these contracts are estimated utilizing internal valuation methods with observable market data inputs.
|  |  | June 30, 2025 |  | December 31, 2024
| Notional Units |  | Notional Amount |  | Estimated Fair Value |  | Notional Amount |  | Estimated Fair Value
Financial institution counterparties: |  |  |  |  |  |  |  |  |
Oil – assets | Barrels |  | 9,247 |  |  | $ | 47,032 |  |  | 7,097 |  |  | $ | 27,471 |
Oil – liabilities | Barrels |  | 6,324 |  |  | (13,874) |  |  | 4,768 |  |  | (12,897) |
Natural gas – assets | MMBTUs |  | 26,784 |  |  | 5,880 |  |  | 25,454 |  |  | 3,804 |
Natural gas – liabilities | MMBTUs |  | 39,267 |  |  | (10,257) |  |  | 26,082 |  |  | (4,054) |
Customer counterparties: |  |  |  |  |  |  |  |  |
Oil – assets | Barrels |  | 6,426 |  |  | 14,331 |  |  | 4,872 |  |  | 12,973 |
Oil – liabilities | Barrels |  | 9,146 |  |  | (45,885) |  |  | 6,993 |  |  | (26,753) |
Natural gas – assets | MMBTUs |  | 39,267 |  |  | 10,601 |  |  | 26,767 |  |  | 4,255 |
Natural gas – liabilities | MMBTUs |  | 26,784 |  |  | (5,808) |  |  | 24,769 |  |  | (3,600) |
Schedule of Foreign Exchange Contracts, Statement of Financial Position | The notional amounts and fair values of non-hedging foreign currency derivative contracts are presented in the following table. The fair values of these contracts are estimated utilizing internal valuation methods with observable market data inputs.
|  |  | June 30, 2025 |  | December 31, 2024
| Notional Currency |  | Notional Amount |  | Estimated Fair Value |  | Notional Amount |  | Estimated Fair Value
Financial institution counterparties: |  |  |  |  |  |  |  |  |
Forward and option contracts – assets | EUR |  | 8,000 |  |  | $ | 454 |  |  | — |  |  | $ | — |
Forward and option contracts – liabilities | EUR |  | 8,000 |  |  | (5) |  |  | — |  |  | — |
Customer counterparties: |  |  |  |  |  |  |  |  |
Forward and option contracts – assets | EUR |  | 8,000 |  |  | 5 |  |  | — |  |  | — |
Forward and option contracts – liabilities | EUR |  | 8,000 |  |  | (454) |  |  | — |  |  | — |
Schedule of Amounts Related to Non-Hedging Interest Rate and Commodity Derivatives | For non-hedging derivative instruments, gains and losses due to changes in fair value and all cash flows are included in other non-interest income and other non-interest expense as presented in the table below.
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Non-hedging interest rate derivatives: |  |  |  |  |  |  |
Other non-interest income | $ | 733 |  |  | $ | 512 |  |  | $ | 1,122 |  |  | $ | 1,637 |
Other non-interest expense | — |  |  | 3 |  |  | (1) |  |  | 3 |
Non-hedging commodity derivatives: |  |  |  |  |  |  |
Other non-interest income | 937 |  |  | 946 |  |  | 2,703 |  |  | 1,325 |
Non-hedging foreign currency derivatives: |  |  |  |  |  |  |
Other non-interest income | — |  |  | — |  |  | 55 |  |  | 11 |

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