Balance Sheet Components (Components of Property and Equipment) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 147,116	$ 80,399
Less: accumulated depreciation and amortization	(68,597)	(50,159)
Property and equipment, net	78,519	30,240
Computers and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	60,677	34,716
Purchased software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	21,389	11,785
Office equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	14,980	10,852
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 50,070	$ 23,046