v3.26.1
Loans Receivable - Summary of Performance and Credit Quality of Loan Portfolio (Detail) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Current $ 1,801,924 $ 1,794,833
Total Loans Receivable 1,821,627 1,818,743
Loans receivable more than 90 days and accruing 0 0
Commercial real estate [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Current 1,305,835 1,320,779
Total Loans Receivable 1,323,347 1,343,531
Loans receivable more than 90 days and accruing 0 0
Commercial and industrial [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Current 80,230 75,967
Total Loans Receivable 80,673 76,557
Loans receivable more than 90 days and accruing 0 0
Construction [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Current 210,862 209,483
Total Loans Receivable 210,862 209,483
Loans receivable more than 90 days and accruing 0 0
Residential first-lien mortgage [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Current 168,805 163,425
Total Loans Receivable 170,553 163,813
Loans receivable more than 90 days and accruing 0 0
Home equity/consumer [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Current 36,192 25,179
Total Loans Receivable 36,192 25,359
Loans receivable more than 90 days and accruing 0 0
30 to 59 Days Past Due [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 3,225 8,088
30 to 59 Days Past Due [Member] | Commercial real estate [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 1,838 7,523
30 to 59 Days Past Due [Member] | Commercial and industrial [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 82 15
30 to 59 Days Past Due [Member] | Construction [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 0 0
30 to 59 Days Past Due [Member] | Residential first-lien mortgage [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 1,305 370
30 to 59 Days Past Due [Member] | Home equity/consumer [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 0 180
60 to 89 Days Past Due [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 0 273
60 to 89 Days Past Due [Member] | Commercial real estate [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 0 0
60 to 89 Days Past Due [Member] | Commercial and industrial [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 0 273
60 to 89 Days Past Due [Member] | Construction [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 0 0
60 to 89 Days Past Due [Member] | Residential first-lien mortgage [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 0 0
60 to 89 Days Past Due [Member] | Home equity/consumer [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 0 0
90 Days Or More Past Due [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 16,478 15,549
90 Days Or More Past Due [Member] | Commercial real estate [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 15,674 15,229
90 Days Or More Past Due [Member] | Commercial and industrial [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 361 302
90 Days Or More Past Due [Member] | Construction [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 0 0
90 Days Or More Past Due [Member] | Residential first-lien mortgage [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 443 18
90 Days Or More Past Due [Member] | Home equity/consumer [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 0 0
Past Due [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 19,703 23,910
Past Due [Member] | Commercial real estate [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 17,512 22,752
Past Due [Member] | Commercial and industrial [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 443 590
Past Due [Member] | Construction [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 0 0
Past Due [Member] | Residential first-lien mortgage [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total 1,748 388
Past Due [Member] | Home equity/consumer [Member]    
Financing Receivable Performance and Credit Quality Indicators [Line Items]    
Total $ 0 $ 180