Loans and Allowance for Credit Losses on Loans - Schedule of Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Jan. 01, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	$ 1,765,845		$ 1,678,292
Allowance for credit losses	(21,993)	$ (21,165)	(19,241)	$ (16,123)	$ (15,352)
Loans receivable, net	1,743,852		1,659,051
Deferred loan fees, unamortized premiums and unaccreted (discounts)	140		160
Real Estate | Commercial real estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	885,585		842,208
Allowance for credit losses		(7,826)
Real Estate | SBA—real estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	224,695		221,340
Allowance for credit losses		(1,369)
SBA—non-real estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	14,997		13,377
Allowance for credit losses	(147)	(65)	(207)	(199)	(278)
C&I
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	120,970		116,951
Allowance for credit losses	(1,215)	(1,323)	(1,643)	(2,848)	(2,563)
Home mortgage
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	518,024		482,949
Allowance for credit losses	(11,045)	(10,579)	(8,826)	(2,891)	(2,185)
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	1,574		1,467
Allowance for credit losses	$ (14)	$ (3)	$ (7)	$ (13)	$ (19)