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Loans, Allowance for Credit Losses and Credit Quality - Schedule of Information Regarding Allowance for Credit Losses on Loans (Details) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Mar. 31, 2025		Mar. 31, 2024		Dec. 31, 2024
Allowance for loan losses
Beginning balance	$ 8,884		$ 8,591		$ 8,591
Charge-offs	(82)		0
Recoveries	0		0
(Benefit) provision	6		79
Ending balance	8,808	[1]	8,670	[1]	8,884
Real Estate | Home Equity Lines of Credit and Loans
Allowance for loan losses
Beginning balance	118		321		321
Charge-offs	0		0		0
Recoveries	0		0
(Benefit) provision	1		(2)
Ending balance	119	[1]	319	[1]	118
Real Estate | One- to Four-Family Residential
Allowance for loan losses
Beginning balance	2,928		3,555		3,555
Charge-offs	0		0		0
Recoveries	0		0
(Benefit) provision	(230)		(44)
Ending balance	2,698	[1]	3,511	[1]	2,928
Real Estate | Multi Family
Allowance for loan losses
Beginning balance	2,422		1,190		1,190
Charge-offs	0		0		0
Recoveries	0		0
(Benefit) provision	210		93
Ending balance	2,632	[1]	1,283	[1]	2,422
Real Estate | Commercial
Allowance for loan losses
Beginning balance	2,260		1,636		1,636
Charge-offs	0		0		0
Recoveries	0		0
(Benefit) provision	272		36
Ending balance	2,532	[1]	1,672	[1]	2,260
Real Estate | Construction
Allowance for loan losses
Beginning balance	1,036		1,757		1,757
Charge-offs	0		0		0
Recoveries	0		0
(Benefit) provision	(328)		(76)
Ending balance	708	[1]	1,681	[1]	1,036
Other Loans | Commercial Loans
Allowance for loan losses
Beginning balance	119		131		131
Charge-offs	(81)		0		0
Recoveries	0		0
(Benefit) provision	80		72
Ending balance	118	[1]	203	[1]	119
Other Loans | Consumer
Allowance for loan losses
Beginning balance	1		1		1
Charge-offs	(1)		0		(4)
Recoveries	0		0
(Benefit) provision	1		0
Ending balance	$ 1	[1]	$ 1	[1]	$ 1
[1] Balances of accrued interest receivable excluded from amortized cost and the calculation of allowance for credit losses amounted to $3.8 million and $3.5 million as of March 31, 2025 and December 31, 2024.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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