Investment Securities, Contractual and Expected Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Maturity in years [Abstract]
Due in one year or less	$ 78,883
Due after one year through five years	131,352
Due after five years through ten years	29,523
Due after ten years	26,631
Subtotal	266,389
Mortgage-backed securities and Collateralized mortgage obligations	353,925
Amortized cost	620,314	$ 683,784
Maturity in years [Abstract]
Due in one year or less	77,408
Due after one year through five years	124,600
Due after five years through ten years	27,427
Due after ten years	24,503
Subtotal	253,938
Mortgage-backed securities and Collateralized mortgage obligations	318,419
Estimated fair value	$ 572,357	$ 618,092