Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net Revenue:
Total net revenue	$ 260,928	$ 173,381	$ 717,691	$ 466,767
Cost of Revenue:
Total cost of revenue	142,451	94,388	384,114	246,910
Gross Profit:
Total gross profit	118,477	78,993	333,577	219,857
Operating Expenses:
Research and development	68,487	45,370	186,219	119,692
Sales and marketing	46,666	25,603	117,041	68,180
General and administrative	29,873	19,769	77,992	50,768
Total operating expenses	145,026	90,742	381,252	238,640
Loss from Operations	(26,549)	(11,749)	(47,675)	(18,783)
Other Income, Net:
Interest expense	(767)	(112)	(1,436)	(220)
Other income, net	2,065	2,162	4,272	2,971
Total other income, net	1,298	2,050	2,836	2,751
Loss Before Income Taxes	(25,251)	(9,699)	(44,839)	(16,032)
Income tax benefit	(96)	(172)	(619)	(397)
Net Loss	$ (25,155)	$ (9,527)	$ (44,220)	$ (15,635)
Net loss per share —basic and diluted	$ (0.22)	$ (0.09)	$ (0.39)	$ (0.15)
Weighted-average shares used in computing net loss per share —basic and diluted	116,681	106,884	114,064	103,035
Player | Goods
Net Revenue:
Total net revenue	$ 81,606	$ 73,331	$ 236,534	$ 201,299
Cost of Revenue:
Total cost of revenue	75,376	64,884	218,695	168,412
Gross Profit:
Total gross profit	6,230	8,447	17,839	32,887
Platform | Services
Net Revenue:
Total net revenue	179,322	100,050	481,157	265,468
Cost of Revenue:
Total cost of revenue	67,075	29,504	165,419	78,498
Gross Profit:
Total gross profit	$ 112,247	$ 70,546	$ 315,738	$ 186,970