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Capital Lease - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Capital Leased Assets [Line Items]      
Capital leases future minimum payments present value at inception $ 25,000    
Property, plant and equipment estimated useful lives, years 15 years    
Depreciation $ 75,745 $ 66,202 $ 50,894
Accumulated depreciation on the capital lease asset 4,200    
Capital Leased Asset      
Capital Leased Assets [Line Items]      
Depreciation $ 1,700