Loans and Allowance for Credit Losses on Loans - Schedule of Aging Analysis of Recorded Investment in Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	$ 1,931,007	$ 1,765,845
Accrued interest receivable	8,400	7,300
Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	966,472	885,585
SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	232,209	224,695
SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	20,170	14,997
C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	212,476	120,970
Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	499,666	518,024
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	14	1,574
Total Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	10,947	14,234
Total Past Due | Loans Insured or Guaranteed by non-US Government Authorities
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	3,500	1,900
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	2,895	4,783
Total Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	346	154
Total Past Due | C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	0
Total Past Due | Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	7,706	9,297
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	4,227	6,098
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	1,344	1,868
30-59 Days Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	208	154
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	2,675	4,076
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	6,210	3,662
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	1,041	932
60-89 Days Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	138	0
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	5,031	2,730
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	510	4,474
> 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	510	1,983
> 90 Days Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	0
> 90 Days Past Due | C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	0
> 90 Days Past Due | Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	0	2,491
> 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	1,920,060	1,751,611
Loans Not Past Due | Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	966,472	885,585
Loans Not Past Due | SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	229,314	219,912
Loans Not Past Due | SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	19,824	14,843
Loans Not Past Due | C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	212,476	120,970
Loans Not Past Due | Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	491,960	508,727
Loans Not Past Due | Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans receivable	$ 14	$ 1,574