CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Total revenue, net	$ 397,815	$ 389,992	$ 774,453	$ 750,063
Costs and expenses:
Cost of goods sold	148,404	151,267	290,973	297,090
Research and development	25,589	20,121	49,674	42,495
Selling, general and administrative	160,651	162,552	320,577	319,185
Intangible asset amortization	3,304	4,198	7,198	8,725
Total costs and expenses	337,948	338,138	668,422	667,495
Operating income	59,867	51,854	106,031	82,568
Interest income	1,965	1,764	3,342	3,512
Interest expense	(12,236)	(13,149)	(23,891)	(26,078)
Gain (loss) from the sale of business	0	(679)	0	42,197
Other income, net	1,979	5,034	5,408	9,903
Income before income taxes	51,575	44,824	90,890	112,102
Provision for income taxes	6,787	9,756	13,201	31,640
Net income	$ 44,788	$ 35,068	$ 77,689	$ 80,462
Net income per share
Basic (in dollars per share)	$ 0.54	$ 0.41	$ 0.93	$ 0.95
Diluted (in dollars per share)	$ 0.54	$ 0.41	$ 0.93	$ 0.94
Weighted average common shares outstanding (See Note 14):
Basic (in shares)	83,168	84,687	83,400	84,593
Diluted (in shares)	83,622	85,340	83,979	85,324
Comprehensive income (See Note 15)	$ 52,598	$ 28,731	$ 109,630	$ 104,558