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Income Taxes - Reconciliation of Income Tax Expense at the Statutory Rate (Detail) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Income Taxes Paid, Net [Abstract]    
Computed at the statutory rate $ 135 $ 569
Decrease resulting from    
Tax exempt interest (8) (6)
Cash surrender value of life insurance (21) (20)
State income taxes 46 196
Other 23 1
Actual expense $ 175 $ 740