v3.26.1
Loans - Schedule of Aging of Accruing Past Due and Nonaccrual Loans (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans $ 869,330 $ 829,859
Current    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 867,826 828,610
30 to 59 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,085 718
60 to 89 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 419 531
90 Days Plus Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 0  
Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,504 1,249
Commercial and Industrial [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 162,593 152,657
Commercial and Industrial [Member] | Current    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 162,460 152,589
Commercial and Industrial [Member] | 30 to 59 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 133 48
Commercial and Industrial [Member] | 60 to 89 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans   20
Commercial and Industrial [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 133 68
Commercial Real Estate [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 254,178 255,911
Commercial Real Estate [Member] | Current    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 254,178 255,835
Commercial Real Estate [Member] | 30 to 59 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans   76
Commercial Real Estate [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans   76
Commercial Lessors of Buildings [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 126,401 114,010
Commercial Lessors of Buildings [Member] | Current    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 126,401 114,010
Construction [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 56,180 47,982
Construction [Member] | Current    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 56,180 47,962
Construction [Member] | 30 to 59 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans   20
Construction [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans   20
Consumer Mortgage [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 197,873 193,298
Consumer Mortgage [Member] | Current    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 196,603 192,673
Consumer Mortgage [Member] | 30 to 59 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 906 223
Consumer Mortgage [Member] | 60 to 89 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 364 402
Consumer Mortgage [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,270 625
Home Equity Line of Credit [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 57,992 52,616
Home Equity Line of Credit [Member] | Current    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 57,947 52,221
Home Equity Line of Credit [Member] | 30 to 59 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans   320
Home Equity Line of Credit [Member] | 60 to 89 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 45 75
Home Equity Line of Credit [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 45 395
Consumer Installment [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 10,147 9,019
Consumer Installment [Member] | Current    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 10,135 9,002
Consumer Installment [Member] | 30 to 59 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 8 17
Consumer Installment [Member] | 60 to 89 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 4  
Consumer Installment [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 12 17
Consumer Indirect [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 3,966 4,366
Consumer Indirect [Member] | Current    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 3,922 4,318
Consumer Indirect [Member] | 30 to 59 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 38 14
Consumer Indirect [Member] | 60 to 89 Days Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 6 34
Consumer Indirect [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans $ 44 $ 48