Segment And Geographic Information (Operating Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 616,904	$ 579,342	$ 1,183,405	$ 1,128,567
Depreciation and amortization	12,044	13,993	24,317	27,900
Income from operations	22,227	17,740	34,644	34,008
Capital expenditures	18,801	8,366	26,379	16,203
Total assets	2,064,440		2,064,440		$ 1,998,668
Elimination Of Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(23,313)	(19,342)	(46,678)	(38,316)
Corporate And Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Income from operations	(18,999)	(17,895)	(36,480)	(33,516)
Americas [Member]
Segment Reporting Information [Line Items]
Net sales	405,602	395,354	780,161	748,168
Depreciation and amortization	5,415	5,842	10,920	11,608
Income from operations	18,611	21,434	33,807	39,479
Capital expenditures	5,770	5,387	9,036	9,596
Total assets	910,825		910,825		864,388
Asia [Member]
Segment Reporting Information [Line Items]
Net sales	191,207	162,825	366,098	336,195
Depreciation and amortization	2,973	4,129	6,139	8,249
Income from operations	20,044	11,665	32,365	22,557
Capital expenditures	8,714	1,464	11,124	4,573
Total assets	678,513		678,513		634,838
Europe [Member]
Segment Reporting Information [Line Items]
Net sales	43,408	40,505	83,824	82,520
Depreciation and amortization	679	692	1,336	1,396
Income from operations	2,571	2,536	4,952	5,488
Capital expenditures	2,466	491	3,380	672
Total assets	407,716		407,716		393,443
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Total assets	67,386		67,386		$ 105,999
Corporate [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	2,977	3,330	5,922	6,647
Capital expenditures	$ 1,851	$ 1,024	$ 2,839	$ 1,362