Investment Securities, Available-for-sale Securities, Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Amortized Cost [Abstract]
Due in one year or less	$ 60,187
Due after one year through five years	142,506
Due after five years through ten years	5,000
Amortized Cost	499,182	$ 525,030
Fair Value [Abstract]
Due in one year or less	58,959
Due in one year through five years	135,144
Due after five years through ten years	4,997
Fair Value	450,135	481,513
Mortgage-Backed Securities and Collateralized Mortgage Obligations - Residential [Member]
Amortized Cost [Abstract]
Securities, amortized cost	272,012
Amortized Cost	272,012	291,431
Fair Value [Abstract]
Securities, fair value	233,719
Fair Value	233,719	260,316
Small Business Administration-Guaranteed Participation Securities [Member]
Amortized Cost [Abstract]
Securities, amortized cost	19,477
Amortized Cost	19,477	23,115
Fair Value [Abstract]
Securities, fair value	17,316
Fair Value	$ 17,316	$ 20,977