Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net sales	$ 1,175,270	$ 1,081,121	$ 962,069
Cost of sales	666,579	610,890	585,386
Gross profit	508,691	470,231	376,683
Selling, general and administrative expenses	201,901	198,914	231,833
Engineering, research and development expenses	106,991	105,900	87,711
Amortization of intangible assets	44,263	47,349	37,067
Contingent consideration fair value adjustment	0	0	(1,282)
Operating income	155,536	118,068	21,354
Interest expense	36,846	38,667	33,355
Interest income	(318)	(429)	(1,336)
Other (income) expense, net	(991)	(12,355)	2,727
Income (loss) before income tax expense (benefit) and equity in net loss of affiliate	119,999	92,185	(13,392)
Income tax expense (benefit)	22,852	10,202	(21,572)
Equity in net loss of affiliate	0	1,687	293
Net income	$ 97,147	$ 80,296	$ 7,887
Earnings Per Share:
Basic net income per common share	$ 0.69	$ 0.57	$ 0.06
Diluted net income per common share	$ 0.68	$ 0.57	$ 0.06
Weighted shares outstanding
Basic	141,093	140,353	139,311
Diluted	142,050	141,121	140,062