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Investment Securities (Scheduled Maturities of Securities Available for Sale and Securities Held to Maturity) (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Investments [Abstract]    
Debt securities available for sale, Due in one year or less, Amortized Cost $ 0  
Debt securities available for sale, Due from one to five years, Amortized Cost 9  
Debt securities available for sale, Due after five years through ten years, Amortized Cost 60,485  
Debt securities available for sale, Due after ten years, Amortized Cost 901,963  
Securities available for sale, Amortized Cost 962,457 $ 972,720
Debt securities available for sale, Due in one year or less, Fair Value 0  
Debt securities available for sale, Due from one to five years, Fair Value 9  
Debt securities available for sale, Due after five years through ten years, Fair Value 60,871  
Debt securities available for sale, Due after ten years, Fair Value 862,712  
Debt securities available for sale, Fair Value 923,592 911,105
Debt securities held to maturity, Due in one year or less, Amortized Cost 7,128  
Debt securities held to maturity, Due from one to five years, Amortized Cost 14,869  
Debt securities held to maturity, Due after five years through ten years, Amortized Cost 17,924  
Debt securities held to maturity, Due after ten years, Amortized Cost 47,706  
Securities held to maturity, Amortized Cost 87,627 116,003
Debt securities held to maturity, Due in one year or less, Fair Value 7,130  
Debt securities held to maturity, Due from one to five years, Fair Value 14,250  
Debt securities held to maturity, Due after five years through ten years, Fair Value 15,869  
Debt securities held to maturity, Due after ten years, Fair Value 41,228  
Securities held to maturity, Fair Value $ 78,477 $ 104,556