Summary of Significant Accounting Policies (Components of Property and Equipment) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 80,399	$ 69,958
Less: accumulated depreciation and amortization	(50,159)	(40,378)
Property and equipment, net	30,240	29,580
Computer Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	34,716	34,657
Purchased software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	11,785	5,574
Office equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	10,852	10,385
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 23,046	$ 19,342