CONSOLIDATED STATEMENTS OF INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net sales	$ 1,074,751	$ 963,875	$ 994,852
Cost of sales	589,418	562,698	562,486
Gross profit	485,333	401,177	432,366
Operating expenses:
Selling, general and administrative	335,690	297,724	327,274
Research and development	71,247	57,537	65,615
Legal settlement	10,036	18,684
Impairment charges	4,283	36,504	23,750
Contingent consideration expense (benefit)	3,161	(7,960)	(232)
Acquired in-process research and development		250	525
Total operating expenses	424,417	402,739	416,932
Income (loss) from operations	60,916	(1,562)	15,434
Other income (expense):
Interest income	769	604	(291)
Interest expense	(5,261)	(9,994)	(12,413)
Other expense - net	(2,507)	(2,279)	(537)
Total other expense - net	(6,999)	(11,669)	(13,241)
Income (loss) before income taxes	53,917	(13,231)	2,193
Income tax expense (benefit)	5,463	(3,388)	(3,258)
Net income (loss)	$ 48,454	$ (9,843)	$ 5,451
Earnings (loss) per common share
Basic (in dollars per share)	$ 0.86	$ (0.18)	$ 0.10
Diluted (in dollars per share)	$ 0.84	$ (0.18)	$ 0.10
Weighted average shares outstanding
Basic (in shares)	56,145	55,434	55,075
Diluted (in shares)	57,359	55,434	56,235