Balance Sheet Accounts (Components of Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Line Of Credit Facility [Line Items]
Current portion of long-term debt	$ 24,720	$ 12,280
Less: unamortized debt issuance costs	(540)	(164)
Long-term debt, less current portion	153,958	80,422
Less: unamortized debt issuance costs	(1,215)	(846)
Total debt	178,678	92,702
Term Loan
Line Of Credit Facility [Line Items]
Current portion of long-term debt	25,260	12,444
Long-term debt, less current portion	145,173	71,268
Revolver
Line Of Credit Facility [Line Items]
Long-term debt, less current portion	$ 10,000	$ 10,000