Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net Revenue:
Total net revenue	$ 451,663	$ 260,928	$ 1,128,502	$ 717,691
Cost of Revenue:
Total cost of revenue	236,839	142,451	625,741	384,114
Gross Profit:
Total gross profit	214,824	118,477	502,761	333,577
Operating Expenses:
Research and development	88,388	68,487	261,053	186,219
Sales and marketing	70,956	46,666	203,368	117,041
General and administrative	43,510	29,873	123,744	77,992
Total operating expenses	202,854	145,026	588,165	381,252
Income (Loss) from Operations	11,970	(26,549)	(85,404)	(47,675)
Other Income, Net:
Interest expense	(773)	(767)	(2,670)	(1,436)
Other income, net	1,202	2,065	3,020	4,272
Total other income (expense), net	429	1,298	350	2,836
Income (Loss) Before Income Taxes	12,399	(25,251)	(85,054)	(44,839)
Income tax (benefit) expense	(548)	(96)	(241)	(619)
Net Income (Loss)	$ 12,947	$ (25,155)	$ (84,813)	$ (44,220)
Net income (loss) per share —basic	$ 0.10	$ (0.22)	$ (0.69)	$ (0.39)
Net income (loss) per share —diluted	$ 0.09	$ (0.22)	$ (0.69)	$ (0.39)
Weighted-average shares used in computing net income (loss) per share —basic	125,687	116,681	122,837	114,064
Weighted-average shares used in computing net income (loss) per share —diluted	136,669	116,681	122,837	114,064
Platform | Services
Net Revenue:
Total net revenue	$ 319,231	$ 179,322	$ 796,565	$ 481,157
Cost of Revenue:
Total cost of revenue	124,568	67,075	332,828	165,419
Gross Profit:
Total gross profit	194,663	112,247	463,737	315,738
Player | Goods
Net Revenue:
Total net revenue	132,432	81,606	331,937	236,534
Cost of Revenue:
Total cost of revenue	112,271	75,376	292,913	218,695
Gross Profit:
Total gross profit	$ 20,161	$ 6,230	$ 39,024	$ 17,839