Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Total revenue	$ 9,932	$ 6,309	$ 16,787	$ 11,622
Total cost of sales	28,092	7,853	44,746	15,492
Gross loss	(18,160)	(1,544)	(27,959)	(3,870)
Operating expenses:
Research and development	40,941	19,913	74,050	33,923
Sales and marketing	7,189	3,507	16,587	6,142
General and administrative	38,150	19,237	68,175	29,510
Total operating expenses	86,280	42,657	158,812	69,575
Loss from operations	(104,440)	(44,201)	(186,771)	(73,445)
Change in fair value of warrant liabilities	11,733	6,928	7,876	(39,721)
Interest expense and other	(3,148)	(288)	(6,428)	(488)
Interest income and other	603	731	2,142	901
Total other income (expense), net	9,188	7,371	3,590	(39,308)
Loss before provision for (benefit from) income taxes	(95,252)	(36,830)	(183,181)	(112,753)
Provision for (benefit from) income taxes	(13)	0	391	0
Net loss	$ (95,239)	$ (36,830)	$ (183,572)	$ (112,753)
Net loss per share:
Basic (in dollars per share)	$ (0.27)	$ (0.11)	$ (0.52)	$ (0.33)
Diluted (in dollars per share)	$ (0.27)	$ (0.11)	$ (0.52)	$ (0.33)
Shares used in computing net loss per share:
Basic (in shares)	352,054,529	340,255,023	350,378,494	336,641,349
Diluted (in shares)	352,054,529	340,255,023	350,378,494	336,641,349
Comprehensive Loss:
Net loss	$ (95,239)	$ (36,830)	$ (183,572)	$ (112,753)
Net unrealized losses on available-for-sale debt securities	(1,449)	16	(5,097)	(27)
Comprehensive loss	(96,688)	(36,814)	(188,669)	(112,780)
Products
Total revenue	1,798	1,977	3,339	4,910
Total cost of sales	16,987	3,720	28,805	9,029
Services
Total revenue	8,134	4,332	13,448	6,712
Total cost of sales	$ 11,105	$ 4,133	$ 15,941	$ 6,463