Segment And Geographic Information (Operating Segments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 566,501	$ 549,225
Depreciation and amortization	12,273	13,907
Income from operations	12,417	16,268
Capital expenditures	7,578	7,837
Total assets	2,035,773		$ 1,998,668
Elimination Of Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Net sales	(23,365)	(18,974)
Corporate And Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Income from operations	(17,481)	(15,621)
Americas [Member]
Segment Reporting Information [Line Items]
Net sales	374,559	352,814
Depreciation and amortization	5,505	5,766
Income from operations	15,196	18,045
Capital expenditures	3,266	4,209
Total assets	906,746		864,388
Asia [Member]
Segment Reporting Information [Line Items]
Net sales	174,891	173,370
Depreciation and amortization	3,166	4,120
Income from operations	12,321	10,892
Capital expenditures	2,410	3,109
Total assets	647,653		634,838
Europe [Member]
Segment Reporting Information [Line Items]
Net sales	40,416	42,015
Depreciation and amortization	657	704
Income from operations	2,381	2,952
Capital expenditures	914	181
Total assets	400,129		393,443
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Total assets	81,245		$ 105,999
Corporate [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	2,945	3,317
Capital expenditures	$ 988	$ 338