Loans and Allowance for Credit Losses on Loans - Schedule of Aging Analysis of Recorded Investment in Past Due Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	$ 1,716,197	$ 1,678,292
Accrued interest receivable	6,800	6,400
Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	847,863	842,208
SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	224,476	221,340
SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	14,309	13,377
C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	112,160	116,951
Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	516,226	482,949
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	1,163	1,467
Total Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	13,187	4,933
Total Past Due | Loans Insured or Guaranteed by non-US Government Authorities
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	5,300
Total Past Due | Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	0
Total Past Due | SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	6,105	374
Total Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	834	547
Total Past Due | C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	200	441
Total Past Due | Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	6,048	3,571
Total Past Due | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	0
30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	4,424	2,023
30-59 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	0
30-59 Days Past Due | SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	851	199
30-59 Days Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	157	117
30-59 Days Past Due | C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	200	0
30-59 Days Past Due | Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	3,216	1,707
30-59 Days Past Due | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	0
60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	1,648	1,746
60-89 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	0
60-89 Days Past Due | SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	198	175
60-89 Days Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	80	49
60-89 Days Past Due | C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	0
60-89 Days Past Due | Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	1,370	1,522
60-89 Days Past Due | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	0
> 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	7,115	1,164
> 90 Days Past Due | Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	0
> 90 Days Past Due | SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	5,056	0
> 90 Days Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	597	381
> 90 Days Past Due | C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	441
> 90 Days Past Due | Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	1,462	342
> 90 Days Past Due | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	0
Loans Not Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	1,703,010	1,673,359
Loans Not Past Due | Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	847,863	842,208
Loans Not Past Due | SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	218,371	220,966
Loans Not Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	13,475	12,830
Loans Not Past Due | C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	111,960	116,510
Loans Not Past Due | Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	510,178	479,378
Loans Not Past Due | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	$ 1,163	$ 1,467