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Employee and Director Benefit Plans - Benefit plan (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Directors Retirement Plan    
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]    
Benefit amount for a period 120 months  
Expense related to benefit plan $ 30 $ 26
Accumulated liability 1,600 1,600
Director Deferred Compensation Plan    
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]    
Expense related to benefit plan 9 25
Accumulated liability $ 1,200 $ 1,200