Investment Securities - Summary of Amortized Cost and Fair Value of Debt and Equity Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Available-for-sale, Amortized cost [Abstract]
Due in less than one year	$ 16,256
Due one to five years	78,774
Due five to ten years	56,934
Due beyond ten years	7,848
Amortized Cost	463,536	$ 478,186
Available-for-sale, Estimated fair value [Abstract]
Due in less than one year	16,355
Due one to five years	80,357
Due five to ten years	58,142
Due beyond ten years	7,596
Estimated fair value	459,396	486,215
Held-to-maturity, Amortized cost [Abstract]
Due in less than one year	514
Due one to five years	1,268
Amortized Cost	1,782	2,407
Securities held to maturity [Abstract]
Due in less than one year	521
Due one to five years	1,309
Estimated fair value	1,830	2,504
Mortgage-backed securities
Available-for-sale, Amortized cost [Abstract]
Amortized cost	300,398
Amortized Cost	300,398	332,014
Available-for-sale, Estimated fair value [Abstract]
Estimated fair value	293,607
Estimated fair value	293,607	336,363
Asset-backed securities
Available-for-sale, Amortized cost [Abstract]
Amortized cost	3,326
Amortized Cost	3,326	3,325
Available-for-sale, Estimated fair value [Abstract]
Estimated fair value	3,339
Estimated fair value	$ 3,339	$ 3,193