Condensed Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Condensed Consolidated Statements of Operations and Comprehensive Income [Abstract]
Net sales	$ 263,648	$ 251,016	$ 494,197	$ 478,360
Cost of goods sold	68,470	63,846	127,637	118,873
Gross profit	195,178	187,170	366,560	359,487
Operating expenses:
Research and development	17,395	15,547	34,807	30,471
Selling, general and administrative	106,718	107,254	207,466	205,145
Provision for litigation			2,341	(94)
Amortization of intangibles	4,393	4,623	8,905	9,397
Acquisition related costs	(1,104)	13,870	(1,180)	14,144
Total operating expenses	127,402	141,294	252,339	259,063
Operating income/(loss)	67,776	45,876	114,221	100,424
Other income/(expense), net
Interest income/(expense), net	2,476	2,541	5,019	5,253
Foreign currency transaction gain/(loss)	(1,107)	209	(1,498)	(71)
Other income/(expense)	1,395	307	1,696	521
Total other income/(expense), net	2,764	3,057	5,217	5,703
Income/(loss) before income taxes	70,540	48,933	119,438	106,127
Income tax provision	15,950	7,388	26,764	19,253
Net income/(loss)	54,590	41,545	92,674	86,874
Other comprehensive income/(loss), net of tax:
Unrealized gain/(loss) on marketable securities	(5,031)	(774)	(13,859)	(2,440)
Foreign currency translation gain/(loss)	(3,170)	1,026	(4,737)	(3,087)
Total other comprehensive income/(loss), net of tax	(8,201)	252	(18,596)	(5,527)
Comprehensive income/(loss)	$ 46,389	$ 41,797	$ 74,078	$ 81,347
Earnings per share:
Basic	$ 0.54	$ 0.41	$ 0.92	$ 0.87
Diluted	$ 0.53	$ 0.40	$ 0.90	$ 0.84
Weighted average shares outstanding:
Basic	100,671	100,449	101,136	100,159
Diluted	102,884	103,475	103,480	102,931