Loans Receivable and Allowance for Credit Losses - Collateral-Dependent Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Loans Receivable and Allowance for Credit Losses
Collateral dependent loans	$ 1,075	$ 153
Residential Properties
Loans Receivable and Allowance for Credit Losses
Collateral dependent loans	956	153
Land
Loans Receivable and Allowance for Credit Losses
Collateral dependent loans	119
One-to-Four Family Mortgages
Loans Receivable and Allowance for Credit Losses
Collateral dependent loans	956	153
One-to-Four Family Mortgages | Residential Properties
Loans Receivable and Allowance for Credit Losses
Collateral dependent loans	956	$ 153
Construction Loans
Loans Receivable and Allowance for Credit Losses
Collateral dependent loans	119
Construction Loans | Land
Loans Receivable and Allowance for Credit Losses
Collateral dependent loans	$ 119