CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Revenues	$ 34,454	$ 33,580	$ 65,461	$ 64,617
Cost of goods sold	6,284	7,092	11,830	12,264
Gross profit	28,170	26,488	53,631	52,353
Costs and expenses:
Sales and marketing	19,669	19,250	40,557	37,224
Research and development	7,022	5,723	13,296	11,471
General and administrative	9,403	8,669	19,021	17,032
Total costs and expenses	36,094	33,642	72,874	65,727
Loss from operations	(7,924)	(7,154)	(19,243)	(13,374)
Other (expense) income:
Investment income (expense)	32	29	(15)	63
Interest expense	(249)	(565)	(603)	(1,010)
Change in fair value of derivatives	434	(84)	686	(105)
Other expense	(33)	(124)	(40)	(132)
Total other expense, net	184	(744)	28	(1,184)
Net loss	$ (7,740)	$ (7,898)	$ (19,215)	$ (14,558)
Weighted average common shares outstanding - basic (in shares)	41,994,618	41,080,898	41,900,000	40,894,405
Weighted average common shares outstanding - diluted (in shares)	41,994,618	41,080,898	41,900,000	40,894,405
Loss per common share - basic (in dollars per share)	$ (0.18)	$ (0.19)	$ (0.46)	$ (0.36)
Loss per common share - diluted (in dollars per share)	$ (0.18)	$ (0.19)	$ (0.46)	$ (0.36)