Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Sales	$ 49,005	$ 22,593
Cost of sales	27,677	18,076
Gross profit	21,328	4,517
Operating expenses:
Selling, general and administrative	58,665	32,805
Research and development	25,981	24,499
Total operating expenses	84,646	57,304
Loss from operations	(63,318)	(52,787)
Other income (expense), net:
Change in fair value of warrants	0	(2,717)
Expiration of warrant	0	5,018
Interest expense	(4,946)	(3,682)
Interest and other income	1,517	54
Loss before income taxes	(66,747)	(48,680)
Income tax expense	9	8
Net loss	(66,756)	(48,688)
Other comprehensive loss
Unrealized loss on short-term investments	(66)	(7)
Foreign currency translation loss	(9)	(10)
Total other comprehensive loss	(75)	(17)
Comprehensive loss	$ (66,831)	$ (48,705)
Net loss per share:
Attributable to common stock, basic	$ (2.41)	$ (3.57)
Attributable to common stock, diluted	$ (2.41)	$ (3.57)
Weighted-average shares outstanding used in computing net loss per share:
Attributable to common stock, basic	27,661,982	13,625,044
Attributable to common stock, diluted	27,661,982	13,625,044