v3.26.1
Fair Values of Assets and Liabilities - Fair Value Measurements, Recurring and Nonrecurring (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Financial Assets:    
Cash and due from banks $ 5,496 $ 13,414
Federal Home Loan Bank stock 2,051 2,431
Bank-owned life insurance 4,918 4,875
Loans, net 418,436 416,047
Accrued interest receivable 2,069 2,108
Financial Liabilities:    
Deposits 454,200 470,773
Advances from Federal Home Loan Bank 44,844 52,308
Mortgagors’ tax escrow 574 811
Accrued interest payable 291 484
Cash and due from banks [Member]    
Financial Assets:    
Financial Assets, Fair Value Disclosure 5,496 13,414
Federal Home Loan Bank stock [Member]    
Financial Assets:    
Financial Assets, Fair Value Disclosure 2,051 2,431
Bank-owned life insurance [Member]    
Financial Assets:    
Financial Assets, Fair Value Disclosure 4,918 4,875
Loans, net [Member]    
Financial Assets:    
Financial Assets, Fair Value Disclosure 389,323 387,121
Accrued interest receivable [member]    
Financial Assets:    
Financial Assets, Fair Value Disclosure 2,069 2,108
Deposits [Member]    
Financial Liabilities:    
Financial Liabilities Fair Value Disclosure 453,927 470,841
Federal Home Loan Bank Borrowings [Member]    
Financial Liabilities:    
Financial Liabilities Fair Value Disclosure 44,409 52,182
Mortgagors' tax escrow [Member]    
Financial Liabilities:    
Financial Liabilities Fair Value Disclosure 574 811
Accrued interest payable [member]    
Financial Liabilities:    
Financial Liabilities Fair Value Disclosure 291 484
Fair Value, Inputs, Level 1 [Member] | Cash and due from banks [Member]    
Financial Assets:    
Financial Assets, Fair Value Disclosure 5,496 13,414
Fair Value, Inputs, Level 1 [Member] | Accrued interest receivable [member]    
Financial Assets:    
Financial Assets, Fair Value Disclosure 2,069 2,108
Fair Value, Inputs, Level 1 [Member] | Deposits [Member]    
Financial Liabilities:    
Financial Liabilities Fair Value Disclosure 325,477 318,884
Fair Value, Inputs, Level 1 [Member] | Accrued interest payable [member]    
Financial Liabilities:    
Financial Liabilities Fair Value Disclosure 291 484
Fair Value, Inputs, Level 2 [Member] | Federal Home Loan Bank stock [Member]    
Financial Assets:    
Financial Assets, Fair Value Disclosure 2,051 2,431
Fair Value, Inputs, Level 2 [Member] | Bank-owned life insurance [Member]    
Financial Assets:    
Financial Assets, Fair Value Disclosure 4,918 4,875
Fair Value, Inputs, Level 2 [Member] | Deposits [Member]    
Financial Liabilities:    
Financial Liabilities Fair Value Disclosure 128,450 151,957
Fair Value, Inputs, Level 2 [Member] | Federal Home Loan Bank Borrowings [Member]    
Financial Liabilities:    
Financial Liabilities Fair Value Disclosure 44,409 52,182
Fair Value, Inputs, Level 2 [Member] | Mortgagors' tax escrow [Member]    
Financial Liabilities:    
Financial Liabilities Fair Value Disclosure 574 811
Fair Value, Inputs, Level 3 [Member] | Loans, net [Member]    
Financial Assets:    
Financial Assets, Fair Value Disclosure $ 389,323 $ 387,121