Condensed Consolidated Statements of Income (Loss) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Net sales	$ 250,801	$ 250,398
Costs and expenses:
Cost of sales - exclusive of amortization	84,254	84,598
Product remediation	2,947	3,715
Selling, general and administrative	125,704	104,161
Research and development	43,575	31,752
Merger and integration expenses	3,251	2,960
Restructuring expenses	2,533	1,881
Amortization of intangibles	9,316	8,801
Operating (loss) income from continuing operations	(20,779)	12,530
Interest income	249	447
Interest expense	(1,662)	(2,111)
Gain on acquisition	0	11,484
Foreign exchange and other gains (losses)	729	(273)
(Loss) income from continuing operations before tax	(21,463)	22,077
Income tax (benefit) expense	(6,614)	3,893
Losses from equity method investments	0	(362)
Net (loss) income from continuing operations	(14,849)	17,822
Net loss from discontinued operations, net of tax	0	(4,549)
Net (loss) income	$ (14,849)	$ 13,273
Basic (loss) income per share:
Continuing operations (in Dollars per Share)	$ (0.31)	$ 0.37
Discontinued operations (in Dollars per Share)	0.00	(0.10)
Basic (loss) income per share (in Dollars per Share)	(0.31)	0.27
Diluted (loss) income per share:
Continuing operations (in Dollars per Share)	(0.31)	0.36
Discontinued operations (in Dollars per Share)	0.00	(0.09)
Diluted (loss) income per share (in Dollars per Share)	$ (0.31)	$ 0.27
Shares used in computing basic (loss) income per share (in Shares)	48,246	48,324
Shares used in computing diluted (loss) income per share (in Shares)	48,246	49,187