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, 2026	Dec. 31, 2025
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	$ 2,259,061	$ 2,193,669
Loans Insured or Guaranteed by non-US Government Authorities
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	35,800	27,300
CRE
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	1,190,117	1,132,223
SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	254,470	242,041
SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	24,084	22,482
C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	221,623	221,270
Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	568,512	574,300
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	255	1,353
30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	7,074	3,119
30-59 Days Past Due \| Loans Insured or Guaranteed by non-US Government Authorities
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	0	3,200
30-59 Days Past Due \| CRE
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	723	0
30-59 Days Past Due \| SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	2,648	2,532
30-59 Days Past Due \| SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	525	30
30-59 Days Past Due \| C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	26	0
30-59 Days Past Due \| Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	3,152	557
30-59 Days Past Due \| Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	0	0
60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	3,412	3,173
60-89 Days Past Due \| CRE
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	0	0
60-89 Days Past Due \| SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	516	1,163
60-89 Days Past Due \| SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	456	5
60-89 Days Past Due \| C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	77	0
60-89 Days Past Due \| Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	2,363	2,005
60-89 Days Past Due \| Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	0	0
90 or More Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	892	0
90 or More Days Past Due \| CRE
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	0	0
90 or More Days Past Due \| SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	892	0
90 or More Days Past Due \| SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	0	0
90 or More Days Past Due \| C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	0	0
90 or More Days Past Due \| Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	0	0
90 or More Days Past Due \| Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	0	0
Nonaccrual Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	16,372	14,071
Nonaccrual Loans \| Loans Insured or Guaranteed by non-US Government Authorities
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	30,500	20,900
Nonaccrual Loans \| CRE
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	3,747	3,424
Nonaccrual Loans \| CRE \| Loans Insured or Guaranteed by non-US Government Authorities
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans		319
Nonaccrual Loans \| SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	10,346	9,194
Nonaccrual Loans \| SBA—real estate \| Loans Insured or Guaranteed by non-US Government Authorities
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	28,500	18,900
Nonaccrual Loans \| SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	854	646
Nonaccrual Loans \| SBA—non-real estate \| Loans Insured or Guaranteed by non-US Government Authorities
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	2,000	1,700
Nonaccrual Loans \| C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	0	218
Nonaccrual Loans \| Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	1,425	589
Nonaccrual Loans \| Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	0	0
Current Accruing Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	2,231,311	2,173,306
Current Accruing Loans \| CRE
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	1,185,647	1,128,799
Current Accruing Loans \| SBA—real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	240,068	229,152
Current Accruing Loans \| SBA—non-real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	22,249	21,801
Current Accruing Loans \| C&I
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	221,520	221,052
Current Accruing Loans \| Home mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	561,572	571,149
Current Accruing Loans \| Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Gross loans	$ 255	$ 1,353