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Defined Contribution Plans (Details) - USD ($)
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Retirement Benefits [Abstract]      
Defined contribution plan eligibility minimum days worked (days) 30 days    
Defined contribution plan, costs $ 3,025,000 $ 2,464,000 $ 0