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
Revenue:
Total revenue	$ 19,618	$ 14,621	$ 54,407	$ 43,578
Cost of revenue:
Total cost of revenue	8,629	19,743	24,503	34,064
Gross profit (loss)	10,989	(5,122)	29,904	9,514
Operating expenses:
Research and development	23,154	21,654	69,997	54,459
Sales and marketing	15,811	14,203	47,451	34,550
General and administrative	18,056	16,008	56,474	67,928
Total operating expenses	57,021	51,865	173,922	156,937
Loss from operations	(46,032)	(56,987)	(144,018)	(147,423)
Interest income	1,304	893	1,574	1,739
Interest expense	(2)		(2)	(645)
Change in fair value of warrant liabilities	(9,087)	42,958	8,881	130,528
Other income (expense), net	(898)	(428)	(1,387)	(1,320)
Loss before provision for income taxes	(54,715)	(13,564)	(134,952)	(17,121)
Provision for income taxes	27	(3)	68	72
Net loss and comprehensive loss	$ (54,742)	$ (13,561)	$ (135,020)	$ (17,193)
Net loss per common share - basic	$ (0.27)	$ (0.07)	$ (0.68)	$ (0.10)
Net loss per common share - diluted	$ (0.27)	$ (0.07)	$ (0.68)	$ (0.10)
Weighted-average common shares outstanding - basic	200,172,683	196,095,192	199,528,394	165,656,408
Weighted-average common shares outstanding - diluted	200,172,683	196,095,192	199,528,394	165,656,408
Product
Revenue:
Total revenue	$ 13,164	$ 10,848	$ 37,607	$ 33,455
Cost of revenue:
Total cost of revenue	6,534	7,584	19,481	21,090
Software and other services
Revenue:
Total revenue	6,454	3,773	16,800	10,123
Cost of revenue:
Total cost of revenue	$ 2,095	536	$ 5,022	1,351
Loss on product purchase commitments
Cost of revenue:
Total cost of revenue		$ 11,623		$ 11,623