Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue, net	$ 52,299	$ 54,189	$ 104,540	$ 103,890
Cost of goods sold	43,671	43,411	86,888	82,393
Gross profit	8,628	10,778	17,652	21,497
Operating expenses
Research and development	8,328	10,914	17,814	21,842
Sales and marketing	2,164	2,832	4,722	5,792
General and administrative	11,035	10,681	22,254	21,550
Total operating expenses	21,527	24,427	44,790	49,184
Loss from operations	(12,899)	(13,649)	(27,138)	(27,687)
Other income (expense)
Interest income	31	16	59	32
Interest expense	(1,408)	(1,367)	(2,810)	(2,798)
Other income (expense), net	(180)	6,797	(629)	6,628
Total other income (expense), net	(1,557)	5,446	(3,380)	3,862
Loss before income taxes	(14,456)	(8,203)	(30,518)	(23,825)
Net loss	$ (14,456)	$ (8,203)	$ (30,518)	$ (23,825)
Net loss per share
Basic (in dollars per share)	$ (0.52)	$ (0.31)	$ (1.11)	$ (0.89)
Diluted (in dollars per share)	$ (0.52)	$ (0.31)	$ (1.11)	$ (0.89)
Weighted average shares used to compute net loss per share:
Basic (in shares)	27,612,315	26,850,032	27,537,048	26,636,755
Diluted (in shares)	27,612,315	26,850,032	27,537,048	26,636,755