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Loans Receivable and Allowance for Credit Losses - Loans receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	$ 380,572		$ 368,253
Allowance for Credit Losses	(1,699)	$ (1,699)	(1,699)	$ (1,699)	$ (2,699)	$ (2,802)
Net Deferred Loan Costs	734		779
Loans Receivable, Net	379,607		367,333
One-to-Four Family Mortgages
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	334,322		332,659
Allowance for Credit Losses	(1,268)	(1,441)	(1,526)	(1,273)	(2,454)	(2,554)
Home Equity Lines of Credit
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	9,833		7,952
Allowance for Credit Losses	(44)	(43)	(45)	(57)	(54)	(57)
Construction Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	14,711		9,588
Allowance for Credit Losses	(26)	(26)	(13)	(7)	(32)	(32)
Consumer Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	3,968		3,699
Allowance for Credit Losses		(27)	(28)		(9)	(9)
Commercial Loans
Loans Receivable and Allowance for Credit Losses
Total Loans Receivable	17,738		14,355
Allowance for Credit Losses	$ (33)	$ (43)	$ (80)	$ (145)	$ (126)	$ (126)

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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