Summary of Significant Accounting Policies - Investment in a Corporate Venture (Details) - USD ($)	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020	Sep. 30, 2017
Schedule of Equity Method Investments [Line Items]
Equity method investment, other than temporary impairment	$ 0	$ 0
Cost of revenue	632,335,000	668,875,000
Current assets	1,479,521,000		$ 1,592,761,000
Corporate Venture
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage				30.00%
Cost of revenue	600,000	$ 22,100,000
Accrued liabilities	2,300,000		3,000,000.0
Current assets	600,000		7,800,000
Investor in China | Corporate Venture
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage				70.00%
Accrued Liabilities | Corporate Venture
Schedule of Equity Method Investments [Line Items]
Equity method investment, unamortized deferred gain from sale	2,000,000.0		2,000,000.0
Long-Term Liabilities | Corporate Venture
Schedule of Equity Method Investments [Line Items]
Equity method investment, unamortized deferred gain from sale	$ 500,000		$ 1,000,000.0