CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement [Abstract]
Revenues	$ 159,012	$ 138,584	$ 127,358
Cost of goods sold	31,138	24,147	22,931
Gross profit	127,874	114,437	104,427
Costs and expenses:
Sales and marketing	86,060	80,228	73,328
Research and development	28,333	27,158	24,177
General and administrative	34,943	36,758	32,338
Total costs and expenses	149,336	144,144	129,843
Loss from operations	(21,462)	(29,707)	(25,416)
Other (expense) income:
Investment income	1,487	569	93
Interest expense	(2,835)	(624)	(1,356)
Change in fair value of derivatives	1,531	1,044	(28)
Other expense	(437)	(230)	(278)
Total other (expense) income, net	(254)	759	(1,569)
Net loss	$ (21,716)	$ (28,948)	$ (26,985)
Weighted average common shares outstanding - basic (in shares)	42,878,543	42,083,125	41,214,889
Weighted average common shares outstanding - diluted (in shares)	42,878,543	42,083,125	41,214,889
Loss per common share - basic (in USD per share)	$ (0.51)	$ (0.69)	$ (0.65)
Loss per common share - diluted (in USD per share)	$ (0.51)	$ (0.69)	$ (0.65)