CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net sales	$ 267,841	$ 258,615	$ 248,234
Cost of sales	48,316	43,283	39,330
Gross profit	219,525	215,332	208,904
Operating expenses:
Selling, general and administrative	208,789	198,359	181,022
Research and development	22,829	17,344	11,715
Investigation, restatement and related	12,177	3,791	59,465
Amortization of intangible assets	701	820	1,073
Impairment of intangible assets	0	53	1,027
Operating loss	(24,971)	(5,035)	(45,398)
Other expense, net
Interest expense, net	(5,016)	(4,980)	(7,941)
Other expense, net	(4)	(23)	(3)
Loss on extinguishment of debt	0	0	(8,201)
Loss before income tax provision	(29,991)	(10,038)	(61,543)
Income tax provision (expense) benefit	(206)	(247)	12,259
Net loss	(30,197)	(10,285)	(49,284)
Net loss available to common stockholders (Note 10)	(36,777)	(16,421)	(83,328)
Net loss available to common stockholders (Note 10)	$ (36,777)	$ (16,421)	$ (83,328)
Net loss per common share - basic (in dollars per share)	$ (0.33)	$ (0.15)	$ (0.77)
Net loss per common share - diluted (in dollars per share)	$ (0.33)	$ (0.15)	$ (0.77)
Weighted average shares outstanding - basic (in shares)	112,909,266	110,353,406	108,257,112
Weighted average shares outstanding - diluted (in shares)	112,909,266	110,353,406	108,257,112