Segment And Geographic Information (Operating Segments) (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]
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
Depreciation and amortization													55,139	49,672	46,449
Income from operations													75,638	92,969	100,144
Capital expenditures													32,334	38,062	45,389
Total assets	1,998,668				1,893,878				1,675,348				1,998,668	1,893,878	1,675,348
Elimination Of Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Net sales													(79,373)	(99,475)	(121,492)
Corporate And Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Income from operations													(67,528)	(54,360)	(46,847)
Americas [Member]
Segment Reporting Information [Line Items]
Net sales													1,552,980	1,615,393	1,699,110
Depreciation and amortization													23,275	23,881	21,810
Income from operations													84,457	77,213	58,813
Capital expenditures													20,766	18,390	33,968
Total assets	864,388				867,858				709,446				864,388	867,858	709,446
Asia [Member]
Segment Reporting Information [Line Items]
Net sales													675,801	878,307	1,066,885
Depreciation and amortization													15,832	17,031	17,351
Income from operations													48,285	62,967	78,643
Capital expenditures													7,858	11,851	6,633
Total assets	634,838				604,554				666,318				634,838	604,554	666,318
Europe [Member]
Segment Reporting Information [Line Items]
Net sales													161,007	146,648	152,558
Depreciation and amortization													2,794	2,628	2,739
Income from operations													10,424	7,149	9,535
Capital expenditures													1,441	4,323	3,932
Total assets	393,443				305,833				239,274				393,443	305,833	239,274
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Total assets	$ 105,999				$ 115,633				$ 60,310				105,999	115,633	60,310
Corporate [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization													13,238	6,132	4,549
Capital expenditures													$ 2,269	$ 3,498	$ 856