Summary of Significant Accounting Policies - Contract Balances (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Accounts receivables, contract assets and deferred revenue
Accounts receivable	$ 284,326		$ 284,326		$ 191,639
Unbilled receivables (included in accounts receivable)	17,323		17,323		16,189
Deferred revenue	39,618		39,618		$ 22,828
Deferred revenue, long-term (included in other long-term liabilities)	2,155		2,155
Revenue recognized that was included in opening deferred revenue balance	29,600	$ 24,900	19,200	$ 21,500
Revenue recognized from performance obligation satisfied in prior periods	$ 1,500	$ 3,200	$ 4,300	$ 3,700