Loans Receivable and Allowance for Credit Losses - Nonaccrual Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Loans Receivable and Allowance for Credit Losses
Nonaccrual Loans with No Allowance	$ 1,075	$ 153
Total Nonaccrual Loans	1,075	153
Accrued interest receivables written off by reversing interest income	22	3
One-to-Four Family Mortgages
Loans Receivable and Allowance for Credit Losses
Nonaccrual Loans with No Allowance	956	153
Total Nonaccrual Loans	956	153
Accrued interest receivables written off by reversing interest income	15	3
Home Equity Lines of Credit
Loans Receivable and Allowance for Credit Losses
Accrued interest receivables written off by reversing interest income	0	0
Construction Loans
Loans Receivable and Allowance for Credit Losses
Nonaccrual Loans with No Allowance	119
Total Nonaccrual Loans	119
Accrued interest receivables written off by reversing interest income	7	0
Consumer Loans
Loans Receivable and Allowance for Credit Losses
Accrued interest receivables written off by reversing interest income	0	0
Commercial Loans
Loans Receivable and Allowance for Credit Losses
Accrued interest receivables written off by reversing interest income	$ 0	$ 0