Balance Sheet Accounts (Components of Property and Equipment) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 91,801	$ 80,399
Less: accumulated depreciation and amortization	(53,174)	(50,159)
Property and equipment, net	38,627	30,240
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	40,209	34,716
Purchased software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	12,961	11,785
Office equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	11,464	10,852
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 27,167	$ 23,046