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Loans Receivable - Summary of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2023	Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 770,629	$ 735,017	$ 695,498
Allowance for credit losses	(5,075)	(5,229)	(5,325)	$ (1,116)
Deferred loan costs, net	2,163	2,071
Loans receivable, net	767,717	731,859
Owner Occupied Commercial Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	59,229	59,968	60,850
Allowance for credit losses	(789)	(1,331)	(1,403)	0
Other Commercial Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	75,415	75,782
Multi-Family Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	205,929	180,364	171,427
Allowance for credit losses	(1,889)	(1,998)	$ (1,936)	$ 0
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	12,092	12,522
Total Commercial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	352,665	328,636
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	406,258	394,723
Consumer and Other Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 11,706	$ 11,658

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