Balance Sheet Components - Schedule of Deferred Revenue (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current portion	$ 33,948	$ 42,950	$ 34,501
Deferred revenue, non-current	13,549	$ 12,023	48,511
Total Deferred Revenue (See Note 10)	47,497		83,012
Platform
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current portion	19,110		19,022
Deferred revenue, non-current	8,047		42,674
Player
Deferred Revenue Arrangement [Line Items]
Deferred revenue, current portion	14,838		15,479
Deferred revenue, non-current	$ 5,502		$ 5,837