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Derivative Financial Instruments - Interest Rate Swaps Not Designated as Hedges (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Interest rate swap | Not designated as hedging |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Variable rate, commercial loans that are supported by the interest rate swap contracts | $ 443,800 |  | $ 443,800 |  | $ 491,400
Notional Amount, Derivative Asset | 443,829 |  | 443,829 |  | 491,356
Notional Amount, Derivative Liability | 443,829 |  | 443,829 |  | 491,356
Fair values of derivative assets and liabilities recorded in consolidated balance sheets |  |  |  |  |
Fair value recorded in other assets | 23,559 |  | 23,559 |  | 20,098
Fair value recorded in other liabilities | 23,559 |  | 23,559 |  | 20,098
Interest rate swaps - pay floating, receive fixed | Not designated as hedging |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Notional Amount, Derivative Asset | 74,892 |  | 74,892 |  | 404,572
Notional Amount, Derivative Liability | 368,937 |  | 368,937 |  | 86,784
Fair values of derivative assets and liabilities recorded in consolidated balance sheets |  |  |  |  |
Fair value recorded in other assets | 1,798 |  | 1,798 |  | 17,839
Fair value recorded in other liabilities | 21,761 |  | 21,761 |  | 2,259
Interest rate swaps - pay fixed, receive floating | Not designated as hedging |  |  |  |  |
Derivative Financial Instruments |  |  |  |  |
Notional Amount, Derivative Asset | 368,937 |  | 368,937 |  | 86,784
Notional Amount, Derivative Liability | 74,892 |  | 74,892 |  | 404,572
Fair values of derivative assets and liabilities recorded in consolidated balance sheets |  |  |  |  |
Fair value recorded in other assets | 21,761 |  | 21,761 |  | 2,259
Fair value recorded in other liabilities | 1,798 |  | 1,798 |  | $ 17,839
Non-interest expense | Interest rate swap |  |  |  |  |
Gains and losses on these derivative assets and liabilities recorded in non-interest expense in the unaudited Consolidated Statements of Income |  |  |  |  |
Gain (loss) pay, floating receive fixed | 7,025 | $ 1,264 | 3,475 | $ (9,331) |
Gain (loss) pay fixed receive floating | $ (7,025) | $ (1,264) | $ (3,475) | $ 9,331 |

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