CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 58,894	$ 59,967
Cost of sales	9,936	9,641
Gross profit	48,958	50,326
Operating expenses:
Selling, general and administrative	49,570	45,404
Research and development	5,964	4,339
Investigation, restatement and related	2,552	7,196
Amortization of intangible assets	172	239
Operating loss	(9,300)	(6,852)
Other expense, net
Interest expense, net	(1,126)	(1,472)
Loss before income tax provision	(10,426)	(8,324)
Income tax provision expense	(63)	(58)
Net loss	(10,489)	(8,382)
Net loss available to common stockholders	$ (12,075)	$ (9,850)
Net loss per common share - basic (in dollars per share)	$ (0.11)	$ (0.09)
Net loss per common share - diluted (in dollars per share)	$ (0.11)	$ (0.09)
Weighted average common shares outstanding - basic (in shares)	111,615,839	109,401,383
Weighted average common shares outstanding - diluted (in shares)	111,615,839	109,401,383