Condensed Consolidated Statements of Operations and Comprehensive Loss (Statement) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Total revenue	$ 26,490	$ 19,177	$ 67,515	$ 49,732
Total cost of revenue	22,036	17,283	61,876	49,188
Gross profit (loss)	4,454	1,894	5,639	544
Operating expenses:
Research and development	8,100	8,370	24,381	22,783
Selling and marketing	7,335	4,296	21,764	10,196
General and administrative	12,935	12,519	38,858	42,016
Impairment of right-of-use asset and related fixed assets	0	0	1,816	0
Total operating expenses	28,370	25,185	86,819	74,995
Loss from operations	(23,916)	(23,291)	(81,180)	(74,451)
Interest income	540	4	628	9
Interest expense	(1,509)	(1,061)	(2,765)	(3,179)
Other (expense) income, net	(1,222)	(913)	3,803	(5,359)
Loss before provision for income taxes	(26,107)	(25,261)	(79,514)	(82,980)
Provision for income taxes	0	0	0	0
Net loss and comprehensive loss	$ (26,107)	$ (25,261)	$ (79,514)	$ (82,980)
Net loss per share, basic (in USD per share)	$ (0.14)	$ (0.15)	$ (0.44)	$ (0.51)
Net loss per share, diluted (in USD per share)	$ (0.14)	$ (0.15)	$ (0.44)	$ (0.51)
Weighted-average common shares used to compute net loss per share attributable to common stockholders, basic (in shares)	181,045,785	164,244,972	180,460,490	162,278,489
Weighted-average common shares used to compute net loss per share attributable to common stockholders, diluted (in shares)	181,045,785	164,244,972	180,460,490	162,278,489
Product
Total revenue	$ 20,865	$ 14,126	$ 50,748	$ 36,422
Total cost of revenue	16,798	12,707	46,758	35,572
Service
Total revenue	5,507	4,933	16,411	12,954
Total cost of revenue	5,238	4,576	15,118	13,616
Distribution rights
Total revenue	$ 118	$ 118	$ 356	$ 356