Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net sales	$ 1,591,066	$ 1,550,497	$ 1,342,532
Cost of sales	879,413	830,666	733,547
Gross profit	711,653	719,831	608,985
Selling, general and administrative expenses	284,807	246,534	216,194
Engineering, research and development expenses	121,140	118,456	106,951
Amortization of intangible assets	66,428	62,152	44,023
Operating income	239,278	292,689	241,817
Interest expense	46,962	34,094	32,343
Interest income	(4,652)	(3,839)	(715)
Other (income) expense, net	(121,081)	8,002	25,458
Income before income tax expense	318,049	254,432	184,731
Income tax expense	63,189	13,677	99,665
Net income	$ 254,860	$ 240,755	$ 85,066
Earnings Per Share:
Basic net income per common share	$ 1.89	$ 1.71	$ 0.60
Diluted net income per common share	$ 1.87	$ 1.69	$ 0.59
Weighted average shares outstanding
Basic	135,137	141,026	141,553
Diluted	136,568	142,610	143,518