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Prepaid Expenses and Other Assets - Additional Information (Detail) - Partnership Agreement [Member] - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2020
Mar. 31, 2020
Jun. 30, 2016
Jun. 30, 2020
Prepaid expenses and other assets [Line Items]        
Partnership agreement     10 years  
Upfront cash payment     $ 10.0  
Prepaid expenses and other assets       $ 5.3
Amortization expense $ 0.2 $ 0.8