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Loans Receivable and Allowance for Credit Losses - Loans receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Loans Receivable and Allowance for Credit Losses
Loans Receivable, Net of Unearned Income	$ 367,305	$ 367,050
Allowance for Credit Losses	(2,699)	(2,802)	$ (3,253)	$ (3,253)
Net Deferred Loan Costs	797	790
Loans Receivable, Net	365,403	365,038
One-to-Four Family Mortgages
Loans Receivable and Allowance for Credit Losses
Loans Receivable, Net of Unearned Income	336,406	337,056
Allowance for Credit Losses	(2,454)	(2,554)	(2,738)	(2,738)
Home Equity Loans / Lines of Credit
Loans Receivable and Allowance for Credit Losses
Loans Receivable, Net of Unearned Income	8,004	8,550
Allowance for Credit Losses	(54)	(57)	(60)	(60)
Construction Loans
Loans Receivable and Allowance for Credit Losses
Loans Receivable, Net of Unearned Income	8,847	8,128
Allowance for Credit Losses	(32)	(32)	(73)	(73)
Consumer Loans
Loans Receivable and Allowance for Credit Losses
Loans Receivable, Net of Unearned Income	970	913
Allowance for Credit Losses	(9)	(9)
Commercial loans
Loans Receivable and Allowance for Credit Losses
Loans Receivable, Net of Unearned Income	13,078	12,403
Allowance for Credit Losses	$ (126)	$ (126)	$ (2)	$ (2)

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-Topic 310
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-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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