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Employee Benefits - Net Periodic Benefit Cost (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Retirement Benefits [Abstract]    
Service cost $ 56 $ 53
Interest cost 75 93
Amortization of (Gain) or Loss 60 25
Net periodic benefit cost, Total $ 191 $ 171