CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME / (LOSS) (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Total revenue, net	$ 389,992	$ 258,665	$ 750,063	$ 612,989
Costs and expenses:
Cost of goods sold	151,267	105,478	297,090	238,954
Research and development	20,121	14,926	42,495	35,742
Selling, general and administrative	162,552	116,108	319,185	282,060
Intangible asset amortization	4,198	8,073	8,725	15,050
Total costs and expenses	338,138	244,585	667,495	571,806
Operating income	51,854	14,080	82,568	41,183
Interest income	1,764	2,281	3,512	4,851
Interest expense	(13,149)	(15,682)	(26,078)	(33,434)
Gain (loss) from the sale of business	(679)	0	42,197	0
Other income, net	5,034	972	9,903	493
Income before income taxes	44,824	1,651	112,102	13,093
Provision for income taxes	9,756	2,020	31,640	4,282
Net income (loss)	$ 35,068	$ (369)	$ 80,462	$ 8,811
Net income per share
Basic (in dollars per share)	$ 0.41	$ (0.00)	$ 0.95	$ 0.10
Diluted (in dollars per share)	$ 0.41	$ 0.00	$ 0.94	$ 0.10
Weighted average common shares outstanding (See Note 13):
Basic (in shares)	84,687	84,706	84,593	84,955
Diluted (in shares)	85,340	84,706	85,324	85,548
Comprehensive income (loss) (See Note 14)	$ 28,731	$ 1,095	$ 104,558	$ (17,912)