Condensed Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Condensed Consolidated Statements of Operations and Comprehensive Income [Abstract]
Net sales	$ 230,549	$ 227,344
Cost of goods sold	59,167	55,027
Gross profit	171,382	172,317
Operating expenses:
Research and development	17,412	14,924
Selling, general and administrative	100,748	97,891
Provision for litigation	2,341	(94)
Amortization of intangibles	4,512	4,774
Acquisition related costs	(76)	274
Total operating expenses	124,937	117,769
Operating income/(loss)	46,445	54,548
Other income/(expense), net:
Interest income/(expense), net	2,543	2,712
Foreign currency transaction gain/(loss)	(391)	(280)
Other income/(expense)	301	214
Total other income/(expense), net	2,453	2,646
Income/(loss) before income taxes	48,898	57,194
Income tax provision	10,814	11,865
Net income/(loss)	38,084	45,329
Other comprehensive income/(loss), net of tax:
Unrealized gain/(loss) on marketable securities	(8,828)	(1,666)
Foreign currency translation gain/(loss)	(1,567)	(4,113)
Total other comprehensive income/(loss), net of tax	(10,395)	(5,779)
Comprehensive income/(loss)	$ 27,689	$ 39,550
Earnings per share:
Basic	$ 0.37	$ 0.45
Diluted	$ 0.37	$ 0.44
Weighted average shares outstanding:
Basic	101,600	99,866
Diluted	104,077	102,420