Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenue	$ 48,416	$ 32,733
Cost of goods sold	12,786	11,531
Gross profit	35,630	21,202
Operating expenses
Research and development	13,063	7,460
Selling, general and administrative	69,871	46,074
Total operating expenses	82,934	53,534
Loss from operations	(47,304)	(32,332)
Interest income	400	213
Interest expense	(829)	(3,181)
Other income (expense), net	(585)	3,282
Net loss before tax	(48,318)	(32,018)
Income tax expense	343	213
Net loss	(48,661)	(32,231)
Other comprehensive income
Currency translation adjustment	51	318
Change in unrealized (losses) gains on marketable securities	(24)	(6)
Total other comprehensive income	27	312
Comprehensive loss	$ (48,634)	$ (31,919)
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (1.35)	$ (3.16)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (1.35)	$ (3.16)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	36,129,409	10,184,841
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	36,129,409	10,184,841