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Loans and Allowance for Credit Losses on Loans - Schedule of Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	$ 1,804,987	$ 1,765,845
Allowance for credit losses	(22,129)	(21,993)	$ (20,814)	$ (19,241)
Loans receivable, net	1,782,858	1,743,852
Deferred loan fees, unamortized premiums and unaccreted (discounts)	108	140
Real Estate \| Commercial real estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	905,534	885,585
Real Estate \| SBA—real estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	231,503	224,695
SBA—non-real estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	16,047	14,997
Allowance for credit losses	(229)	(147)	(67)	(207)
C&I
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	147,508	120,970
Allowance for credit losses	(1,663)	(1,215)	(1,270)	(1,643)
Home mortgage
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	502,995	518,024
Allowance for credit losses	(9,391)	(11,045)	(11,472)	(8,826)
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	1,400	1,574
Allowance for credit losses	$ (9)	$ (14)	$ (3)	$ (7)