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Income Taxes - Reconciliation of Income Tax Expense at the Statutory Rate (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Income Taxes Paid, Net [Abstract]
Computed at the statutory rate	$ 400	$ 179
Increase resulting from
Tax exempt interest	(8)	(8)
Cash surrender value of life insurance	(25)	(24)
State income taxes	148	58
Other	(3)	13
Actual tax expense	$ 512	$ 218

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