Balance Sheet Components - Schedule of Deferred Revenue (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Deferred Revenue Arrangement [Line Items]
Total deferred revenue, current	$ 48,004	$ 39,861
Total deferred revenue, non-current	18,134	15,370
Total deferred revenue	66,138	55,231
Platform
Deferred Revenue Arrangement [Line Items]
Total deferred revenue, current	23,701	18,234
Total deferred revenue, non-current	9,112	6,135
Player
Deferred Revenue Arrangement [Line Items]
Total deferred revenue, current	24,303	21,627
Total deferred revenue, non-current	$ 9,022	$ 9,235