Summary of Significant Accounting Policies (Summary of Deferred Revenue) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Deferred Revenue Arrangement [Line Items]
Total deferred revenue, net	$ 104,341	$ 94,860
Less: current portion	79,048	72,934
Non-current deferred revenue, net	25,293	21,926
Deferred Maintenance
Deferred Revenue Arrangement [Line Items]
Total deferred revenue, net	97,310	83,419	$ 87,441
Less: current portion	72,017	61,493
Non-current deferred revenue, net	25,293	21,926
Deferred Product and Other Revenue
Deferred Revenue Arrangement [Line Items]
Total deferred revenue, net	$ 7,031	$ 11,441