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Fair Value of Financial Instruments - Schedule of Assets and Liabilities Measured at Fair Value on a Non-recurring Basis (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Jun. 30, 2023
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Total assets | $ 1,127,195 | $ 1,299,353
Fair Value, Measurements, Nonrecurring |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Total assets | 6,910 | 17,721
Fair Value, Measurements, Nonrecurring | One- to four-family residential mortgage |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable |  | 449
Total assets |  | 12,956
Fair Value, Measurements, Nonrecurring | Commercial loans: | Multi-family mortgage |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable | 1,896 | 7,300
Fair Value, Measurements, Nonrecurring | Commercial loans: | Nonresidential mortgage |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable | 5,014 | 9,972
Total assets |  | 12,956
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Total assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Total assets | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring | One- to four-family residential mortgage |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable |  | 0
Total assets |  | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring | Commercial loans: | Multi-family mortgage |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable | 0 | 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Measurements, Nonrecurring | Commercial loans: | Nonresidential mortgage |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable | 0 | 0
Total assets |  | 0
Significant Other Observable Inputs (Level 2) |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Total assets | 1,127,195 | 1,299,353
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Total assets | 0 | 0
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring | One- to four-family residential mortgage |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable |  | 0
Total assets |  | 0
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring | Commercial loans: | Multi-family mortgage |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable | 0 | 0
Significant Other Observable Inputs (Level 2) | Fair Value, Measurements, Nonrecurring | Commercial loans: | Nonresidential mortgage |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable | 0 | 0
Total assets |  | 0
Significant Unobservable Inputs (Level 3) |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable | 6,910 |
Total assets | 0 | 0
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable |  | 17,721
Total assets | 6,910 | 17,721
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring | One- to four-family residential mortgage |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable |  | 449
Total assets |  | 12,956
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring | Commercial loans: | Multi-family mortgage |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable | 1,896 | 7,300
Significant Unobservable Inputs (Level 3) | Fair Value, Measurements, Nonrecurring | Commercial loans: | Nonresidential mortgage |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Net loans receivable | $ 5,014 | 9,972
Total assets |  | $ 12,956

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