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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