Loan Portfolio and Allowance for Credit Losses - Type of Collateral Dependent Loans by Portfolio Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Real Estate [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	$ 23,007	$ 24,278
Real Estate [Member] | Installment [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	0	0
Investment Securities/Cash [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	0	0
Investment Securities/Cash [Member] | Installment [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	0	0
Other [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	30	112
Other [Member] | Installment [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	30	112
Commercial Real Estate [Member] | Real Estate [Member] | Commercial [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	386	429
Commercial Real Estate [Member] | Investment Securities/Cash [Member] | Commercial [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	0	0
Commercial Real Estate [Member] | Other [Member] | Commercial [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	0	0
Other [Member] | Real Estate [Member] | Commercial [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	0	14
Other [Member] | Investment Securities/Cash [Member] | Commercial [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	0	0
Other [Member] | Other [Member] | Commercial [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	0	0
First Mortgages [Member] | Real Estate [Member] | Real Estate Mortgage - 1 to 4 Family [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	19,225	19,928
First Mortgages [Member] | Investment Securities/Cash [Member] | Real Estate Mortgage - 1 to 4 Family [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	0	0
First Mortgages [Member] | Other [Member] | Real Estate Mortgage - 1 to 4 Family [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	0	0
Home Equity Loans [Member] | Real Estate [Member] | Real Estate Mortgage - 1 to 4 Family [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	497	535
Home Equity Loans [Member] | Investment Securities/Cash [Member] | Real Estate Mortgage - 1 to 4 Family [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	0	0
Home Equity Loans [Member] | Other [Member] | Real Estate Mortgage - 1 to 4 Family [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	0	0
Home Equity Lines of Credit [Member] | Real Estate [Member] | Real Estate Mortgage - 1 to 4 Family [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	2,899	3,372
Home Equity Lines of Credit [Member] | Investment Securities/Cash [Member] | Real Estate Mortgage - 1 to 4 Family [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	0	0
Home Equity Lines of Credit [Member] | Other [Member] | Real Estate Mortgage - 1 to 4 Family [Member]
Loan Portfolio and Allowance for Credit Losses [Abstract]
Total loans, net	$ 0	$ 0