Commitments and Contingencies - Additional Information (Detail) $ in Millions	9 Months Ended
	Mar. 31, 2020 USD ($)
Commitments and Contingencies [Line Items]
Operating lease weighted average remaining lease term	5 years 6 months
Operating lease weighted average discount rate percent	3.87%
Operating Expense [Member]
Commitments and Contingencies [Line Items]
Lease cost	$ 13.6
Variable lease expense	1.9
Short-term lease expense	$ 0.2
Minimum [Member] | Office Spaces, Research and Development Laboratory Facilities, Vehicles and Office Equipment [Member]
Commitments and Contingencies [Line Items]
Remaining lease term period	1 year
Maximum [Member] | Office Spaces, Research and Development Laboratory Facilities, Vehicles and Office Equipment [Member]
Commitments and Contingencies [Line Items]
Remaining lease term period	7 years