CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Revenue	$ 33,305	$ 25,585	$ 66,013	$ 48,024
Cost of goods sold	6,318	3,465	12,242	6,448
Gross profit	26,987	22,120	53,771	41,576
Operating expenses:
Sales and marketing	27,492	28,843	54,805	54,448
Research and development	3,656	3,478	6,947	7,058
General and administrative	7,802	7,680	15,275	14,819
Total operating expenses	38,950	40,001	77,027	76,325
Loss from operations	(11,963)	(17,881)	(23,256)	(34,749)
Interest and other income (expense), net:
Interest income	1,582	136	2,515	209
Interest expense	(850)	(622)	(1,689)	(1,183)
Other income (expense), net	25	(146)	99	(200)
Net loss	(11,206)	(18,513)	(22,331)	(35,923)
Other comprehensive income (loss):
Changes in foreign currency translation	3	(14)	(19)	(14)
Unrealized gain (loss) on marketable securities	(5)	(58)	85	(306)
Comprehensive loss	$ (11,208)	$ (18,585)	$ (22,265)	$ (36,243)
Net loss per share, basic (in usd per share)	$ (0.30)	$ (0.54)	$ (0.61)	$ (1.06)
Net loss per share, diluted (in usd per share)	$ (0.30)	$ (0.54)	$ (0.61)	$ (1.06)
Weighted-average number of common shares used to compute basic net loss per share (in shares)	37,864,185	34,052,692	36,399,309	33,923,229
Weighted-average number of common shares used to compute diluted net loss per share (in shares)	37,864,185	34,052,692	36,399,309	33,923,229