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Derivative Financial Instruments and Hedging Activities - Derivative Included In The Consolidated Statements Of Income Related To Interest Rate Swap Agreements (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Derivative [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | $ 5,688 | $ 6,408 | $ 18,112 | $ 17,570
Derivatives designated as hedging instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | 5,688 | 6,408 | 18,112 | 17,570
Interest Rate Swap | Gain (loss) included in interest expense on deposits | Derivatives designated as hedging instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | 3,587 | 4,254 | 11,436 | 10,715
Interest Rate Swap | Gain (loss) included in interest expense on FHLB borrowings | Derivatives designated as hedging instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | 2,101 | 2,200 | 6,676 | 5,969
Interest Rate Swap | Gain (loss) included in interest expense on other borrowings | Derivatives designated as hedging instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | 0 | (46) | 0 | 886
Interest Rate Swap | Gain (loss) included in interest income on tax-exempt investment securities | Derivatives designated as hedging instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | 2,142 | 3,651 | 7,245 | 9,329
Interest Rate Swap | Gain (loss) included in interest income on MBS | Derivatives designated as hedging instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | 488 | 0 | 754 | 0
Interest Rate Swap | Gain (loss) included in interest income on loans | Derivatives designated as hedging instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | 504 | 0 | 591 | 0
Interest Rate Swap | Other noninterest income | Derivatives designated as non-hedging instruments |  |  |  |
Derivative [Line Items] |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax | $ 0 | $ 0 | $ 53 | $ 160

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