Restructuring Charges - Additional Information (Details) - USD ($)	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2016
Restructuring Cost and Reserve
Restructuring costs	$ 0	$ 8,900,000
Costs of revenues
Restructuring Cost and Reserve
Restructuring costs		3,600,000
Research and development
Restructuring Cost and Reserve
Restructuring costs		1,600,000
Selling, general and administrative
Restructuring Cost and Reserve
Restructuring costs		$ 3,700,000