Segment And Geographic Information (Net Sales By Major Geographical Areas) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 318,609	$ 306,105	$ 618,714	$ 593,282
Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	121,648	114,243	240,087	225,095
EMEIA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	100,549	94,533	195,288	186,384
APAC [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 96,412	$ 97,329	$ 183,339	$ 181,803