Condensed Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Condensed Statements of Operations and Comprehensive Loss [Abstract]
Revenue	$ 37,374	$ 24,701	$ 98,567	$ 73,210
Cost of goods sold	9,308	6,076	26,897	18,213
Gross profit	28,066	18,625	71,670	54,997
Operating expenses:
Research and development	8,471	6,867	27,249	19,611
Selling, general and administrative	28,821	25,049	83,795	68,792
Total operating expenses	37,292	31,916	111,044	88,403
Loss from operations	(9,226)	(13,291)	(39,374)	(33,406)
Interest income	617	42	751	183
Interest expense	(1,714)	(633)	(3,366)	(1,884)
Loss on debt extinguishment			(245)
Other income (expense), net	4	(3)	(162)	(11)
Net loss	(10,319)	(13,885)	(42,396)	(35,118)
Other comprehensive loss:
Change in unrealized gain (loss) on investments, net	(189)	(2)	(191)	(38)
Net change in other comprehensive loss	(189)	(2)	(191)	(38)
Net loss and comprehensive loss	$ (10,508)	$ (13,887)	$ (42,587)	$ (35,156)
Net loss per share, basic	$ (0.29)	$ (0.40)	$ (1.21)	$ (1.02)
Net loss per share, diluted	$ (0.29)	$ (0.40)	$ (1.21)	$ (1.02)
Weighted average common shares used to compute net loss per share, basic and diluted	35,303,958	34,736,015	35,157,840	34,536,980