Segment And Geographic Information (Schedule Of Geographic Net Sales And Long-Lived Assets) (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Geographic net sales	$ 607,507	$ 574,341	$ 579,342	$ 549,225	$ 625,719	$ 630,191	$ 664,038	$ 620,925	$ 709,547	$ 731,302	$ 716,868	$ 639,344	$ 2,310,415	$ 2,540,873	$ 2,797,061
Long-lived assets	268,070				290,945				218,341				268,070	290,945	218,341
United States [Member]
Segment Reporting Information [Line Items]
Geographic net sales													1,615,749	1,848,503	2,038,544
Long-lived assets	167,367				172,958				93,679				167,367	172,958	93,679
Asia [Member]
Segment Reporting Information [Line Items]
Geographic net sales													334,305	314,160	371,820
Long-lived assets	67,998				77,237				88,375				67,998	77,237	88,375
Europe [Member]
Segment Reporting Information [Line Items]
Geographic net sales													252,972	221,911	264,674
Long-lived assets	8,415				9,704				8,114				8,415	9,704	8,114
Other Foreign [Member]
Segment Reporting Information [Line Items]
Geographic net sales													107,389	156,299	122,023
Long-lived assets	$ 24,290				$ 31,046				$ 28,173				$ 24,290	$ 31,046	$ 28,173