CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Net sales	$ 413,121	$ 280,717
Cost of goods sold	274,485	184,875
Gross profit	138,636	95,842
Operating expenses
Selling, general and administrative	58,676	42,215
Research and development	27,659	23,678
Amortization of acquisition related intangible assets	4,023	4,221
Other operating expense (income)	888	(124)
Total operating expense	91,246	69,990
Income from operations	47,390	25,852
Other income (expense)
Interest income	768	273
Interest expense	(2,864)	(1,245)
Foreign currency (loss) gain, net	(1,279,000)	75,000
Unrealized gain on investments	3,655
Other income	2,317	1
Total other income (expense)	2,597,000	(896,000)
Income before income taxes and noncontrolling interest	49,987	24,956
Income tax provision	9,434	4,556
Net income	40,553	20,400
Less net income attributable to noncontrolling interest	(1,101)	(232)
Net income attributable to common stockholders	$ 39,452	$ 20,168
Earnings per share attributable to common stockholders:
Basic	$ 0.89	$ 0.39
Diluted	$ 0.87	$ 0.38
Number of shares used in earnings per share computation:
Basic	44,408	51,335
Diluted	45,243	52,422