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Income Taxes - Reconciliation of Income Tax Expense at the Statutory Rate (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024
Income Taxes Paid, Net [Abstract] |  |
Computed at the statutory rate | $ 1,243 | $ 495
Increase (decrease) resulting from |  |
Tax exempt interest | (28) | (30)
Cash surrender value of life insurance | (96) | (106)
State income taxes | 434 | 152
Other | 60 | 54
Actual tax expense | $ 1,613 | $ 565
Tax rate as a percentage of pre-tax income | 27.30% | 24.00%

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