Condensed Consolidated Statements of Operations and Comprehensive Loss (Statement) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Total revenue	$ 22,149	$ 15,030	$ 41,025	$ 30,555
Total cost of revenue	21,058	16,702	39,840	31,905
Gross profit (loss)	1,091	(1,672)	1,185	(1,350)
Operating expenses:
Research and development	8,412	7,903	16,281	14,413
Selling and marketing	7,545	3,052	14,429	5,900
General and administrative	13,108	13,858	25,923	29,497
Impairment of right-of-use asset and related fixed assets	1,816	0	1,816	0
Total operating expenses	30,881	24,813	58,449	49,810
Loss from operations	(29,790)	(26,485)	(57,264)	(51,160)
Interest income	83	3	88	5
Interest expense	(192)	(1,060)	(1,256)	(2,118)
Other (expense) income, net	2,266	(3,434)	5,025	(4,446)
Loss before provision for income taxes	(27,633)	(30,976)	(53,407)	(57,719)
Provision for income taxes	0	0	0	0
Net loss and comprehensive loss	$ (27,633)	$ (30,976)	$ (53,407)	$ (57,719)
Net loss per share, basic (in USD per share)	$ (0.15)	$ (0.19)	$ (0.30)	$ (0.36)
Net loss per share, diluted (in USD per share)	$ (0.15)	$ (0.19)	$ (0.30)	$ (0.36)
Weighted-average common shares used to compute net loss per share attributable to common stockholders, basic (in shares)	180,551,041	162,238,348	180,150,867	161,217,083
Weighted-average common shares used to compute net loss per share attributable to common stockholders, diluted (in shares)	180,551,041	162,238,348	180,150,867	161,217,083
Product
Total revenue	$ 16,457	$ 10,917	$ 29,883	$ 22,296
Total cost of revenue	16,194	12,180	29,960	22,865
Service
Total revenue	5,573	3,994	10,904	8,021
Total cost of revenue	4,864	4,522	9,880	9,040
Distribution rights
Total revenue	$ 119	$ 119	$ 238	$ 238