Segment And Geographic Information (Operating Segments) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Sales	$ 490,966	$ 601,602	$ 1,005,930	$ 1,204,422
Depreciation and amortization	12,339	11,953	24,531	24,125
Income from operations	(1,872)	11,941	4,618	28,028
Interest expense	(2,351)	(1,718)	(4,053)	(3,327)
Interest income	287	1,053	886	2,350
Other income (expense), net	32	808	(630)	2,412
Income before income taxes	(3,904)	12,084	821	29,463
Capital expenditures	10,394	5,421	23,290	15,495
Total assets	1,758,035		1,758,035		$ 1,759,874
Elimination Of Intersegment Sales [Member]
Segment Reporting Information [Line Items]
Sales	(26,437)	(22,628)	(44,478)	(43,235)
Corporate And Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Income from operations	(18,795)	(20,747)	(37,917)	(41,213)
Americas [Member]
Segment Reporting Information [Line Items]
Sales	288,800	404,162	603,196	796,220
Depreciation and amortization	5,762	5,296	11,347	10,677
Income from operations	(787)	17,332	11,638	37,560
Capital expenditures	6,598	2,947	15,858	7,700
Total assets	792,837		792,837		792,180
Asia [Member]
Segment Reporting Information [Line Items]
Sales	188,379	174,170	359,988	361,579
Depreciation and amortization	2,732	2,732	5,446	5,543
Income from operations	17,024	13,072	28,022	28,457
Capital expenditures	791	1,098	3,316	3,936
Total assets	535,741		535,741		533,508
Europe [Member]
Segment Reporting Information [Line Items]
Sales	40,224	45,898	87,224	89,858
Depreciation and amortization	700	758	1,425	1,572
Income from operations	686	2,284	2,875	3,224
Capital expenditures	196	343	1,042	731
Total assets	127,069		127,069		139,977
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Total assets	302,388		302,388		$ 294,209
Corporate [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	3,145	3,167	6,313	6,333
Capital expenditures	$ 2,809	$ 1,033	$ 3,074	$ 3,128

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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