Income Taxes - Additional Information (Detail) - USD ($) |
Jun. 30, 2025 |
Jun. 30, 2024 |
|---|---|---|
| Income Tax Disclosure [Abstract] | ||
| Retained earnings excluding deferred federal income tax liability | $ 2,217,000 | $ 2,217,000 |
| Amount deferred income tax liabilities expected to reverse into taxable income | $ 466,000 | $ 466,000 |