Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 50
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Loans Receivable and the Allowance for Credit Losses - Summary of composition of loans (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025	Mar. 31, 2025	Dec. 31, 2024
Loans Receivable and the Allowance for Credit Losses
Loans receivable	$ 1,828,208	$ 1,860,066
Deferred loan costs, net	174	268
Allowance for credit losses	(4,592)	(4,731)	$ (5,127)	$ (4,830)
Net loans	1,823,790	1,855,603
Residential real estate
Loans Receivable and the Allowance for Credit Losses
Loans receivable	319,943	334,819
Allowance for credit losses	(1,520)	(1,646)	(2,224)	(1,900)
Residential real estate \| One-to-four family
Loans Receivable and the Allowance for Credit Losses
Loans receivable	3,080	3,114
Residential real estate \| Multi-family
Loans Receivable and the Allowance for Credit Losses
Loans receivable	292,160	306,508
Residential real estate \| Mixed-use
Loans Receivable and the Allowance for Credit Losses
Loans receivable	24,703	25,197
Non-residential real estate
Loans Receivable and the Allowance for Credit Losses
Loans receivable	38,205	38,463
Allowance for credit losses	(264)	(249)	(271)	(308)
Construction
Loans Receivable and the Allowance for Credit Losses
Loans receivable	1,320,236	1,336,329
Allowance for credit losses	(2,015)	(2,035)	(1,716)	(1,937)
Commercial and industrial
Loans Receivable and the Allowance for Credit Losses
Loans receivable	149,787	150,397
Allowance for credit losses	(756)	(743)	(606)	(520)
Consumer
Loans Receivable and the Allowance for Credit Losses
Loans receivable	37	58
Allowance for credit losses	$ (37)	$ (58)	$ (310)	$ (165)