Investment Securities - Amortized Cost and Fair Value of Investment Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Amortized Cost
Due in one year or less	$ 2,511
Due after one year through five years	18,090
Due after five years through ten years	97,783
Due after ten years	86,259
Total amortized cost	204,643
Mortgage-backed securities	226,495
Amortized Cost	431,138	$ 455,294
Fair Value
Due in one year or less	2,500
Due after one year through five years	16,800
Due after five years through ten years	84,148
Due after ten years	78,015
Total fair value	181,463
Mortgage-backed securities	201,490
Fair value	382,953	407,382
Amortized Cost
Due in one year or less	9,823
Due after one year through five years	93,608
Due after five years through ten years	72,591
Due after ten years	70,772
Total amortized cost	246,794
Mortgage-backed securities	200,363
Amortized Cost	447,157	449,031
Fair Value
Due in one year or less	9,679
Due after one year through five years	89,399
Due after five years through ten years	64,113
Due after ten years	63,554
Total fair value	226,745
Mortgage-backed securities	172,107
Fair value	$ 398,852	$ 405,576