CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Net sales	$ 81,257	$ 66,883	$ 152,933	$ 125,777
Cost of sales	13,583	11,823	26,002	21,759
Gross profit	67,674	55,060	126,931	104,018
Operating expenses:
Selling, general and administrative	51,925	55,793	104,202	105,363
Research and development	8,497	5,512	14,993	11,476
Restructuring (Note 16)	3,256	0	3,256	0
Investigation, restatement and related	1,017	3,218	4,690	5,770
Amortization of intangible assets	191	173	380	345
Operating income (loss)	2,788	(9,636)	(590)	(18,936)
Other expense, net
Interest expense, net	(1,630)	(1,170)	(3,184)	(2,295)
Other expense, net	(32)	0	(32)	(1)
Income (loss) before income tax provision	1,126	(10,806)	(3,806)	(21,232)
Income tax provision benefit (expense)	74	(62)	23	(125)
Net income (loss)	1,200	(10,868)	(3,783)	(21,357)
Net loss available to common shareholders - basic	(528)	(12,496)	(7,194)	(24,571)
Net loss available to common shareholders - diluted	$ (528)	$ (12,496)	$ (7,194)	$ (24,571)
Net loss per common share - basic (in dollars per share)	$ (0.00)	$ (0.11)	$ (0.06)	$ (0.22)
Net loss per common share - diluted (in dollars per share)	$ (0.00)	$ (0.11)	$ (0.06)	$ (0.22)
Weighted average common shares outstanding - basic (in shares)	115,866,371	112,867,912	115,136,646	112,245,334
Weighted average common shares outstanding - diluted (in shares)	115,866,371	112,867,912	115,136,646	112,245,334