Balance Sheet Accounts (Summary of Long-term Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Acquisition related deferred payments, less current portion	$ 12,350	$ 13,251
Contingent consideration obligations, less current portion	4,711	4,898
Other contractual obligations, less current portion	31,402	31,200
Other	15,644	9,751
Total other long-term liabilities	$ 64,107	$ 59,100