Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Sales	$ 22,199	$ 12,615	$ 60,497	$ 32,917
Cost of sales	8,468	7,259	24,386	19,011
Gross profit	13,731	5,356	36,111	13,906
Operating expenses:
Selling, general and administrative	19,142	14,926	53,634	42,934
Research and development	7,101	6,388	21,710	19,300
Total operating expenses	26,243	21,314	75,344	62,234
Loss from operations	(12,512)	(15,958)	(39,233)	(48,328)
Other income (expense), net:
Interest expense	(230)	(1,299)	(3,304)	(3,495)
Interest and other income	1,746	439	4,913	681
Loss on extinguishment of term loan	(1,407)	0	(1,769)	0
Loss before income taxes	(12,403)	(16,818)	(39,393)	(51,142)
Income tax expense	12	0	38	4
Net loss	(12,415)	(16,818)	(39,431)	(51,146)
Other comprehensive income (loss)
Unrealized gain (loss)on short-term investments	19	55	38	(95)
Foreign currency translation gain (loss)	(6)	(10)	(3)	(23)
Total other comprehensive (loss) income	13	45	35	(118)
Comprehensive loss	$ (12,402)	$ (16,773)	$ (39,396)	$ (51,264)
Net loss per share:
Attributable to common stock, basic	$ (0.35)	$ (0.61)	$ (1.16)	$ (1.86)
Attributable to common stock, diluted	$ (0.35)	$ (0.61)	$ (1.16)	$ (1.86)
Weighted-average shares used in computing net loss per share:
Attributable to common stock, basic	35,662,397	27,665,842	33,947,331	27,551,333
Attributable to common stock, diluted	35,662,397	27,665,842	33,947,331	27,551,333