Loans and Allowance for Credit Losses on Loans - Schedule of Aging Analysis of Recorded Investment in Past Due Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	$ 1,692,485	$ 1,678,292
Accrued interest receivable	6,400	6,400
Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	833,615	842,208
SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	225,719	221,340
SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	13,275	13,377
C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	117,841	116,951
Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	500,635	482,949
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	1,400	1,467
Total Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	8,285	4,933
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	1,930	374
Total Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	786	547
Total Past Due | C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	441
Total Past Due | Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	5,569	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	5,752	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	430	199
30-59 Days Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	95	117
30-59 Days Past Due | C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	0
30-59 Days Past Due | Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	5,227	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	0	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	0	175
60-89 Days Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	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	0	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	2,533	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	1,500	0
> 90 Days Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	691	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	342	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	1,675,915	1,668,426
Loans Not Past Due | Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	833,615	842,208
Loans Not Past Due | SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	221,859	220,592
Loans Not Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	11,703	12,283
Loans Not Past Due | C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	117,841	116,069
Loans Not Past Due | Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	489,497	475,807
Loans Not Past Due | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	$ 1,400	$ 1,467