v3.26.1
Allowance for Credit Losses on Loans - Summary of Performing and Nonperforming Loans by Class (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financing Receivable Recorded Investment [Line Items]    
Loans $ 692,231 $ 689,562
Real Estate - Commercial [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 253,193 255,944
Other Real Estate Construction [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 64,119 57,247
Real Estate 1 - 4 Family Construction [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 20,447 19,453
Real Estate - Residential [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 152,888 159,274
Home Equity [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 76,779 73,262
Other Loans [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 5,089 4,683
Commercial [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 110,491 110,088
Consumer Loans [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 9,225 9,611
Performing [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 691,460 689,184
Performing [Member] | Real Estate - Commercial [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 253,193 255,944
Performing [Member] | Other Real Estate Construction [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 64,119 57,247
Performing [Member] | Real Estate 1 - 4 Family Construction [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 20,447 19,453
Performing [Member] | Real Estate - Residential [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 152,399 159,095
Performing [Member] | Home Equity [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 76,520 73,063
Performing [Member] | Other Loans [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 5,089 4,683
Performing [Member] | Commercial [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 110,491 110,088
Performing [Member] | Consumer Loans [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 9,202 9,611
Non-Performing [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 771 378
Non-Performing [Member] | Real Estate - Residential [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 489 179
Non-Performing [Member] | Home Equity [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans 259 $ 199
Non-Performing [Member] | Consumer Loans [Member]    
Financing Receivable Recorded Investment [Line Items]    
Loans $ 23