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Fair Value Measurements and Fair Value of Financial Instruments - Assets Measured at Fair Value on Recurring Basis (Details) - Recurring [Member] - USD ($) $ in Thousands | Mar. 31, 2026 | Jun. 30, 2025
--- | --- | ---
Assets: |  |
Securities available-for-sale | $ 370,201 | $ 356,062
Equity securities | 355 | 402
Interest rate swaps | 3,823 | 4,733
Total | 374,379 | 361,197
Liabilities: |  |
Interest rate swaps | 3,823 | 4,733
Total | 3,823 | 4,733
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |  |
Assets: |  |
Securities available-for-sale | 0 | 0
Equity securities | 355 | 402
Interest rate swaps | 0 | 0
Total | 355 | 402
Liabilities: |  |
Interest rate swaps | 0 | 0
Total | 0 | 0
Significant Other Observable Inputs (Level 2) [Member] |  |
Assets: |  |
Securities available-for-sale | 370,201 | 356,062
Equity securities | 0 | 0
Interest rate swaps | 3,823 | 4,733
Total | 374,024 | 360,795
Liabilities: |  |
Interest rate swaps | 3,823 | 4,733
Total | 3,823 | 4,733
Significant Unobservable Inputs (Level 3) [Member] |  |
Assets: |  |
Securities available-for-sale | 0 | 0
Equity securities | 0 | 0
Interest rate swaps | 0 | 0
Total | 0 | 0
Liabilities: |  |
Interest rate swaps | 0 | 0
Total | 0 | 0
U.S. Treasury Securities [Member] |  |
Assets: |  |
Securities available-for-sale | 5,789 | 10,453
U.S. Treasury Securities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |  |
Assets: |  |
Securities available-for-sale | 0 | 0
U.S. Treasury Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Assets: |  |
Securities available-for-sale | 5,789 | 10,453
U.S. Treasury Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Assets: |  |
Securities available-for-sale | 0 | 0
U.S. Government Sponsored Enterprises [Member] |  |
Assets: |  |
Securities available-for-sale | 6,371 | 11,644
U.S. Government Sponsored Enterprises [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |  |
Assets: |  |
Securities available-for-sale | 0 | 0
U.S. Government Sponsored Enterprises [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Assets: |  |
Securities available-for-sale | 6,371 | 11,644
U.S. Government Sponsored Enterprises [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Assets: |  |
Securities available-for-sale | 0 | 0
State and Political Subdivisions [Member] |  |
Assets: |  |
Securities available-for-sale | 215,643 | 209,844
State and Political Subdivisions [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |  |
Assets: |  |
Securities available-for-sale | 0 | 0
State and Political Subdivisions [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Assets: |  |
Securities available-for-sale | 215,643 | 209,844
State and Political Subdivisions [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Assets: |  |
Securities available-for-sale | 0 | 0
Mortgage-backed Securities-Residential [Member] |  |
Assets: |  |
Securities available-for-sale | 50,879 | 31,587
Mortgage-backed Securities-Residential [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |  |
Assets: |  |
Securities available-for-sale | 0 | 0
Mortgage-backed Securities-Residential [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Assets: |  |
Securities available-for-sale | 50,879 | 31,587
Mortgage-backed Securities-Residential [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Assets: |  |
Securities available-for-sale | 0 | 0
Mortgage-backed Securities-Multi-family [Member] |  |
Assets: |  |
Securities available-for-sale | 75,904 | 74,597
Mortgage-backed Securities-Multi-family [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |  |
Assets: |  |
Securities available-for-sale | 0 | 0
Mortgage-backed Securities-Multi-family [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Assets: |  |
Securities available-for-sale | 75,904 | 74,597
Mortgage-backed Securities-Multi-family [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Assets: |  |
Securities available-for-sale | 0 | 0
Corporate Debt Securities [Member] |  |
Assets: |  |
Securities available-for-sale | 15,615 | 17,937
Corporate Debt Securities [Member] | Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] |  |
Assets: |  |
Securities available-for-sale | 0 | 0
Corporate Debt Securities [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |
Assets: |  |
Securities available-for-sale | 15,615 | 17,937
Corporate Debt Securities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |
Assets: |  |
Securities available-for-sale | $ 0 | $ 0

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