Investment Securities - Amortized Cost and Fair Value by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Amortized Cost
Due in one year or less	$ 10,317
Due after one year through five years	19,015
Due after five years through ten years	30,663
Due after ten years	120,986
Total	180,981
Mortgage-backed securities	119,360
Total available-for-sale securities	300,341	$ 297,149
Fair Value
Due in one year or less	10,157
Due after one year through five years	18,085
Due after five years through ten years	27,539
Due after ten years	99,492
Total	155,273
Mortgage-backed securities	104,380
Available-for-sale debt securities, at fair value	$ 259,653	$ 250,747