CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Net sales	$ 81,712	$ 67,689	$ 234,645	$ 193,466
Cost of sales	14,790	12,188	40,792	33,947
Gross profit	66,922	55,501	193,853	159,519
Operating expenses:
Selling, general and administrative	52,571	53,475	156,773	158,838
Research and development	3,175	5,953	18,168	17,429
Restructuring (Note 16)	208	0	3,464	0
Investigation, restatement and related	(38)	3,001	4,652	8,771
Amortization of intangible assets	190	175	570	519
Operating income (loss)	10,816	(7,103)	10,226	(26,038)
Other expense, net
Interest expense, net	(1,680)	(1,270)	(4,864)	(3,566)
Other expense, net	(11)	0	(42)	(1)
Income (loss) before income tax provision	9,125	(8,373)	5,320	(29,605)
Income tax provision expense	(591)	(53)	(569)	(178)
Net income (loss)	8,534	(8,426)	4,751	(29,783)
Net income (loss) available to common shareholders (Note 9)	$ 6,761	$ (10,096)	$ (433)	$ (34,667)
Net income (loss) per common share - basic (in dollars per share)	$ 0.06	$ (0.09)	$ (0.00)	$ (0.31)
Net income (loss) per common share - diluted (in dollars per share)	$ 0.06	$ (0.09)	$ (0.00)	$ (0.31)
Weighted average common shares outstanding - basic (in shares)	116,298,146	113,448,251	115,528,067	112,650,713
Weighted average common shares outstanding - diluted (in shares)	119,327,709	113,448,251	115,528,067	112,650,713