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Employee Benefits - Plan's Funded Status and Pension Cost (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Change in benefit obligation    
Beginning of year $ 3,306 $ 2,919
Service cost 56 53
Interest cost 75 93
Actuarial gain (loss) (268) 355
Benefits paid (104) (114)
End of year $ 3,065 $ 3,306