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Income Taxes - Reconciliation of Income Tax Expense at the Statutory Rate (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Taxes Paid, Net [Abstract]
Computed at the statutory rate	$ 281	$ 224	$ 599	$ 492
Decrease resulting from
Tax exempt interest	(5)	(6)	(11)	(13)
Cash surrender value of life insurance	(14)	(14)	(29)	(28)
State income taxes	103	72	213	157
Other	7	3	15	16
Income tax expense	$ 372	$ 279	$ 787	$ 624

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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