Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue, net	$ 222,818	$ 211,565	$ 234,623
Cost of goods sold	189,191	173,850	184,082
Gross profit	33,627	37,715	50,541
Operating expenses
Research and development	36,244	41,220	43,393
Sales and marketing	9,723	10,899	14,087
General and administrative	46,658	42,362	41,903
Total operating expenses	92,625	94,481	99,383
Loss from operations	(58,998)	(56,766)	(48,842)
Other income (expense)
Interest income	126	70	255
Interest expense	(6,319)	(5,620)	(5,635)
Other income (expense), net	(1,205)	8,156	2,998
Total other income (expense), net	(7,398)	2,606	(2,382)
Loss before income taxes	(66,396)	(54,160)	(51,224)
Income tax expense	(1)	(2)	(7,228)
Net loss	$ (66,397)	$ (54,162)	$ (58,452)
Net loss per share
Basic (in dollars per share)	$ (2.38)	$ (2.01)	$ (2.67)
Diluted (in dollars per share)	$ (2.38)	$ (2.01)	$ (2.67)
Weighted average shares used to compute net loss per share:
Basic (in shares)	27,846,387	26,912,141	21,866,630
Diluted (in shares)	27,846,387	26,912,141	21,866,630