Debt - Summary of Total Interest Expense Recognized (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Debt Instrument [Line Items]
Amortization of debt discount and debt issuance costs including initial purchaser discount			$ 15,512	$ 15,920
0.25% Convertible Senior Notes due 2022
Debt Instrument [Line Items]
Debt instrument, interest rate	0.25%	0.25%	0.25%	0.25%
0.25% contractual coupon	$ 216	$ 218	$ 656	$ 659
Amortization of debt discount and debt issuance costs including initial purchaser discount	3,410	3,294	10,262	9,840
Interest expense	$ 3,625	$ 3,512	$ 10,918	$ 10,499