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Derivative Financial Instruments - Interest Rate Swaps Not Designated as Hedges (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Interest rate swap |  |  |
Gains and losses on these derivative assets and liabilities recorded in non-interest expense in the unaudited Consolidated Statements of Income |  |  |
Cash pledged to secure obligations | $ 26,500 |  | $ 27,300
Interest rate swap | Not designated as hedging |  |  |
Derivative Financial Instruments |  |  |
Variable rate, commercial loans that are supported by the interest rate swap contracts | 492,600 |  | 491,400
Notional Amount, Derivative Asset | 492,590 |  | 491,356
Notional Amount, Derivative Liability | 492,590 |  | 491,356
Fair values of derivative assets and liabilities recorded in consolidated balance sheets |  |  |
Fair value recorded in other assets | 16,547 |  | 20,098
Fair value recorded in other liabilities | 16,547 |  | 20,098
Interest rate swaps - pay floating, receive fixed | Not designated as hedging |  |  |
Derivative Financial Instruments |  |  |
Notional Amount, Derivative Asset | 119,622 |  | 404,572
Notional Amount, Derivative Liability | 372,968 |  | 86,784
Fair values of derivative assets and liabilities recorded in consolidated balance sheets |  |  |
Fair value recorded in other assets | 3,467 |  | 17,839
Fair value recorded in other liabilities | 13,080 |  | 2,259
Interest rate swaps - pay fixed, receive floating | Not designated as hedging |  |  |
Derivative Financial Instruments |  |  |
Notional Amount, Derivative Asset | 372,968 |  | 86,784
Notional Amount, Derivative Liability | 119,622 |  | 404,572
Fair values of derivative assets and liabilities recorded in consolidated balance sheets |  |  |
Fair value recorded in other assets | 13,080 |  | 2,259
Fair value recorded in other liabilities | 3,467 |  | $ 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 | (3,550) | $ (10,595) |
Gain (loss) pay fixed receive floating | $ 3,550 | $ 10,595 |

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