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Income Taxes - Reconciliation of Income Tax Expense at the Statutory Rate (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Income Taxes Paid, Net [Abstract]        
Computed at the statutory rate $ 187 $ 327 $ 1,153 $ 1,353
Decrease resulting from        
Tax exempt interest (6) (2) (17) (6)
Cash surrender value of life insurance (20) (18) (61) (83)
State income taxes 88 117 423 471
Other (47) (22) (70) (41)
Actual expense $ 202 $ 402 $ 1,428 $ 1,694