v3.26.1
Investment Securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost    
Due in one year or less $ 178,761  
Due after one year through five years 557,683  
Due after five years through ten years 76,886  
Due after ten years 32,009  
Mortgage-backed securities 743,150  
Amortized cost of Investment Securities available-for-sale 1,588,489 $ 1,568,429
Contractual maturities of investments in debt securities available-for-sale, Fair Value    
Due in one year or less 176,163  
Due after one year through five years 551,463  
Due after five years through ten years 76,412  
Due after ten years 32,058  
Mortgage-backed securities 691,593  
Total debt securities available-for-sale 1,527,689 1,522,486
Accrued interest receivable on investment securities available-for-sale 8,470 8,040
U.S. Treasury and Federal agencies securities    
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost    
Amortized cost of Investment Securities available-for-sale 736,718 697,652
Contractual maturities of investments in debt securities available-for-sale, Fair Value    
Total debt securities available-for-sale 728,602 696,777
U.S. States and political subdivisions securities    
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost    
Amortized cost of Investment Securities available-for-sale 108,121 113,126
Contractual maturities of investments in debt securities available-for-sale, Fair Value    
Total debt securities available-for-sale 106,998 113,063
Mortgage-backed securities - Federal agencies    
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost    
Amortized cost of Investment Securities available-for-sale 743,150 757,151
Contractual maturities of investments in debt securities available-for-sale, Fair Value    
Total debt securities available-for-sale 691,593 712,143
Corporate debt securities    
Contractual maturities of investments in debt securities available-for-sale, Amortized Cost    
Amortized cost of Investment Securities available-for-sale 500 500
Contractual maturities of investments in debt securities available-for-sale, Fair Value    
Total debt securities available-for-sale $ 496 $ 503