Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue	$ 13,060	$ 32,099	$ 44,382	$ 77,516
Cost of revenue	17,800	17,130	52,988	47,059
Gross profit (loss)	(4,740)	14,969	(8,606)	30,457
Operating expenses:
Research and development	20,221	10,535	55,608	39,653
Sales and marketing	6,547	4,126	60,798	12,798
General and administrative	23,271	10,579	59,440	26,942
Gain on sale of assets held-for-sale	0	(7,529)	0	(7,529)
Restructuring	0	0	0	1,043
Total operating expenses	50,039	17,711	175,846	72,907
Operating loss	(54,779)	(2,742)	(184,452)	(42,450)
Interest income	109	2	321	119
Interest expense	(6)	(31)	(83)	(69)
Other income (expense), net	(22)	38	10,097	(105)
Loss before income taxes	(54,698)	(2,733)	(174,117)	(42,505)
Provision for (benefit from) income taxes	14	2,562	649	(4,098)
Net loss	$ (54,712)	$ (5,295)	$ (174,766)	$ (38,407)
Net loss per share:
Basic (in USD per share)	$ (0.28)	$ (0.04)	$ (0.91)	$ (0.28)
Diluted (in USD per share)	$ (0.28)	$ (0.04)	$ (0.91)	$ (0.28)
Weighted-average shares used in computing net loss per share:
Basic (in shares)	196,204,671	140,490,370	192,835,674	139,425,745
Diluted (in shares)	196,204,671	140,490,370	192,835,674	139,425,745
Product
Revenue	$ 11,782	$ 26,099	$ 34,345	$ 53,948
Cost of revenue	17,716	16,482	52,555	46,027
License and services
Revenue	1,278	6,000	10,037	23,568
Cost of revenue	$ 84	$ 648	$ 433	$ 1,032