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Loans Receivable - Schedule of Amortized Cost of Collateral-Dependent Non-Accrual Loans by Portfolio Segment and Type of Collateral (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Sep. 30, 2023
Financing Receivable, Past Due [Line Items]
Total Loans	$ 770,629	$ 735,017	$ 695,498
Dependent
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Dependent | Residential Property
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Dependent | Commercial Property
Financing Receivable, Past Due [Line Items]
Total Loans	9	50
Dependent | Business Assets
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Owner Occupied Commercial Real Estate Loans
Financing Receivable, Past Due [Line Items]
Total Loans	59,229	59,968	60,850
Owner Occupied Commercial Real Estate Loans | Dependent
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Owner Occupied Commercial Real Estate Loans | Dependent | Residential Property
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Owner Occupied Commercial Real Estate Loans | Dependent | Commercial Property
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Owner Occupied Commercial Real Estate Loans | Dependent | Business Assets
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Other Commercial Real Estate
Financing Receivable, Past Due [Line Items]
Total Loans	75,415	75,782	75,357
Other Commercial Real Estate | Dependent
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Other Commercial Real Estate | Dependent | Residential Property
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Other Commercial Real Estate | Dependent | Commercial Property
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Other Commercial Real Estate | Dependent | Business Assets
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Multi-Family
Financing Receivable, Past Due [Line Items]
Total Loans	205,929	180,364	$ 171,427
Multi-Family | Dependent
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Multi-Family | Dependent | Residential Property
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Multi-Family | Dependent | Commercial Property
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Multi-Family | Dependent | Business Assets
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Commercial and Industrial | Dependent
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Commercial and Industrial | Dependent | Residential Property
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Commercial and Industrial | Dependent | Commercial Property
Financing Receivable, Past Due [Line Items]
Total Loans	9	50
Commercial and Industrial | Dependent | Business Assets
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Residential Mortgage | Dependent
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Residential Mortgage | Dependent | Residential Property
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Residential Mortgage | Dependent | Commercial Property
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Residential Mortgage | Dependent | Business Assets
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Consumer and Other | Dependent
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Consumer and Other | Dependent | Residential Property
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Consumer and Other | Dependent | Commercial Property
Financing Receivable, Past Due [Line Items]
Total Loans	0	0
Consumer and Other | Dependent | Business Assets
Financing Receivable, Past Due [Line Items]
Total Loans	$ 0	$ 0

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