Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Total revenue	$ 12,785	$ 7,978	$ 29,572	$ 19,600
Total cost of sales	28,511	10,762	73,257	26,254
Gross loss	(15,726)	(2,784)	(43,685)	(6,654)
Operating expenses:
Research and development	46,308	25,890	120,358	59,813
Sales and marketing	10,111	5,868	26,698	12,010
General and administrative	42,809	35,603	110,984	65,113
Total operating expenses	99,228	67,361	258,040	136,936
Loss from operations	(114,954)	(70,145)	(301,725)	(143,590)
Change in fair value of warrant liabilities	(1,231)	17,072	6,645	(22,649)
Interest expense and other	(2,660)	(374)	(9,088)	(860)
Interest income and other	1,470	843	3,612	1,744
Total other income (expense), net	(2,421)	17,541	1,169	(21,765)
Loss before provision for (benefit from) income taxes	(117,375)	(52,604)	(300,556)	(165,355)
Provision for (benefit from) income taxes	175	(1,264)	566	(1,262)
Net loss	$ (117,550)	$ (51,340)	$ (301,122)	$ (164,093)
Net loss per share:
Basic (in dollars per share)	$ (0.33)	$ (0.15)	$ (0.85)	$ (0.48)
Diluted (in dollars per share)	$ (0.33)	$ (0.15)	$ (0.85)	$ (0.48)
Shares used in computing net loss per share:
Basic (in shares)	359,753,254	352,122,485	353,537,754	341,858,435
Diluted (in shares)	359,753,254	352,122,485	353,537,754	341,858,435
Comprehensive Loss:
Net loss	$ (117,550)	$ (51,340)	$ (301,122)	$ (164,093)
Net unrealized gain (loss) on available-for-sale debt securities	16	93	(5,081)	66
Comprehensive loss	(117,534)	(51,247)	(306,203)	(164,027)
Products
Total revenue	6,796	1,040	10,135	5,950
Total cost of sales	18,364	4,664	47,169	13,693
Services
Total revenue	5,989	6,938	19,437	13,650
Total cost of sales	$ 10,147	$ 6,098	$ 26,088	$ 12,561