Balance Sheet Accounts (Schedule of Deferred Revenue, Net) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current and noncurrent	$ 98,939		$ 99,782
Less: current portion	76,712		76,551
Non-current deferred revenue, net	22,227		23,231
Services
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current and noncurrent	85,069	$ 84,706	87,441	$ 88,737	$ 91,373	$ 89,657
Less: current portion	62,842			65,596
Non-current deferred revenue, net	22,227			$ 23,141
Product
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current and noncurrent	$ 13,870		$ 12,341