v3.26.1
Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale $ 441,254 $ 422,072
Level 1 [Member] | Fair Value on a Recurring Basis [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale 130,320 121,416
Level 2 [Member] | Fair Value on a Recurring Basis [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale 309,491 299,201
Level 2 [Member] | Interest Rate Swaps [Member] | Fair Value on a Recurring Basis [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Liabilities (414) (1,555)
Level 3 [Member] | Fair Value on a Recurring Basis [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale 1,443 1,455
U.S. Treasury [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale 115,540 89,853
U.S. Treasury [Member] | Level 1 [Member] | Fair Value on a Recurring Basis [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale 115,540 89,853
U.S. Government Agencies [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale 105,701 131,961
U.S. Government Agencies [Member] | Level 1 [Member] | Fair Value on a Recurring Basis [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale 14,780 30,080
U.S. Government Agencies [Member] | Level 2 [Member] | Fair Value on a Recurring Basis [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale 90,921 101,881
Mortgage-backed Securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale 164,706 143,382
Mortgage-backed Securities [Member] | Level 2 [Member] | Fair Value on a Recurring Basis [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale 164,706 143,382
State and Local Governments [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale 55,307 56,876
State and Local Governments [Member] | Level 1 [Member] | Fair Value on a Recurring Basis [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale   1,483
State and Local Governments [Member] | Level 2 [Member] | Fair Value on a Recurring Basis [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale 53,864 53,938
State and Local Governments [Member] | Level 3 [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale 1,443 1,455
State and Local Governments [Member] | Level 3 [Member] | Fair Value on a Recurring Basis [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]    
Total Securities Available-for-Sale $ 1,443 $ 1,455