Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Revenue, net	$ 85,432	$ 71,944	$ 241,021	$ 186,357
Cost of revenue	29,284	18,232	78,737	49,779
Gross profit	56,148	53,712	162,284	136,578
Operating expenses:
Research and development	8,685	8,768	26,801	29,725
Selling, general and administrative	70,745	49,701	203,227	140,945
Total operating expenses	79,430	58,469	230,028	170,670
Loss from operations	(23,282)	(4,757)	(67,744)	(34,092)
Interest expense	(279)	(384)	(921)	(1,145)
Other income (expense), net	(76)	569	103	1,311
Loss before income taxes	(23,637)	(4,572)	(68,562)	(33,926)
Income tax provision	94	105	308	253
Net loss	$ (23,731)	$ (4,677)	$ (68,870)	$ (34,179)
Net loss per common share, basic (in USD per share)	$ (0.81)	$ (0.17)	$ (2.35)	$ (1.25)
Net loss per common share, diluted (in USD per share)	$ (0.81)	$ (0.17)	$ (2.35)	$ (1.25)
Weighted-average shares, basic (in shares)	29,397,845	28,050,210	29,294,559	27,358,096
Weighted-average shares, diluted (in shares)	29,397,845	28,050,210	29,294,559	27,358,096