v3.26.1
Fair Values of Assets and Liabilities - Summary of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Securities available-for-sale:    
Securities available-for-sale, at fair value $ 133,783 $ 152,406
U.S. Government-sponsored enterprises obligations [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 1,430 1,453
U.S. Government agency small business administration pools guaranteed by the SBA [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 9,155 [1] 10,573
Collateralized mortgage obligations issued by the FHLMC, FNMA and GNMA [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 29,408 [1] 34,742
Residential mortgage backed securities [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 58,027 [1] 64,495
Municipal bonds [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 29,389 29,269
Corporate debt [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 490 6,177
Corporate subordinated debt [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 5,884 5,697
Fair Value, Measurements, Recurring [Member] | U.S. Government-sponsored enterprises obligations [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 1,430 1,453
Fair Value, Measurements, Recurring [Member] | U.S. Government agency small business administration pools guaranteed by the SBA [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 9,155 10,573
Fair Value, Measurements, Recurring [Member] | Collateralized mortgage obligations issued by the FHLMC, FNMA and GNMA [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 29,408 34,742
Fair Value, Measurements, Recurring [Member] | Residential mortgage backed securities [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 58,027 64,495
Fair Value, Measurements, Recurring [Member] | Municipal bonds [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 29,389 29,269
Fair Value, Measurements, Recurring [Member] | Corporate debt [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 490 6,177
Fair Value, Measurements, Recurring [Member] | Corporate subordinated debt [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 5,884 5,697
Fair Value, Measurements, Recurring [Member] | Derivatives [Member]    
Other assets:    
Other assets, at fair value 42 54
Other liabilities:    
Other liabilities, at fair value 27 191
Fair Value, Measurements, Recurring [Member] | Mortgage servicing rights [Member]    
Other assets:    
Other assets, at fair value 257 257
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Government-sponsored enterprises obligations [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 1,430 1,453
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Government agency small business administration pools guaranteed by the SBA [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 9,155 10,573
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized mortgage obligations issued by the FHLMC, FNMA and GNMA [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 29,408 34,742
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Residential mortgage backed securities [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 58,027 64,495
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Municipal bonds [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 29,389 29,269
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate debt [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 490 6,177
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate subordinated debt [Member]    
Securities available-for-sale:    
Securities available-for-sale, at fair value 5,884 5,697
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Derivatives [Member]    
Other assets:    
Other assets, at fair value 42 54
Other liabilities:    
Other liabilities, at fair value 27 191
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortgage servicing rights [Member]    
Other assets:    
Other assets, at fair value $ 257 $ 257
[1] Actual maturities for these debt securities are dependent upon the interest rate environment and prepayments on the underlying loans.