Condensed Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Condensed Consolidated Statements of Operations and Comprehensive Income [Abstract]
Net sales	$ 254,148	$ 229,721	$ 748,345	$ 708,081
Cost of goods sold	65,497	58,554	193,134	177,427
Gross profit	188,651	171,167	555,211	530,654
Operating expenses:
Research and development	18,701	15,853	53,508	46,324
Selling, general and administrative	106,576	96,444	314,042	301,589
Provision for litigation		605	2,341	511
Amortization of intangibles	4,324	4,573	13,229	13,970
Acquisition related costs	(652)	363	(1,832)	14,507
Total operating expenses	128,949	117,838	381,288	376,901
Operating income/(loss)	59,702	53,329	173,923	153,753
Other income/(expense), net
Interest income/(expense), net	3,899	2,105	8,918	7,358
Foreign currency transaction gain/(loss)	(2,210)	(898)	(3,708)	(969)
Other income/(expense)	74	(84)	1,770	437
Total other income/(expense), net	1,763	1,123	6,980	6,826
Income/(loss) before income taxes	61,465	54,452	180,903	160,579
Income tax provision	14,034	7,241	40,799	26,494
Net income/(loss)	47,431	47,211	140,104	134,085
Other comprehensive income/(loss), net of tax:
Unrealized gain/(loss) on marketable securities	(4,380)	(991)	(18,239)	(3,431)
Foreign currency translation gain/(loss)	(2,478)	(491)	(7,215)	(3,578)
Total other comprehensive income/(loss), net of tax	(6,858)	(1,482)	(25,454)	(7,009)
Comprehensive income/(loss)	$ 40,573	$ 45,729	$ 114,650	$ 127,076
Earnings per share:
Basic	$ 0.48	$ 0.47	$ 1.39	$ 1.33
Diluted	$ 0.47	$ 0.45	$ 1.36	$ 1.30
Weighted average shares outstanding:
Basic	99,652	101,104	100,638	100,477
Diluted	101,417	104,418	102,789	103,430