Segment And Geographic Information (Schedule Of Geographic Net Sales And Long-Lived Assets) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Geographic net sales	$ 555,229	$ 640,688	$ 1,759,651	$ 1,909,415
Long-lived assets	366,258		366,258		$ 301,589
United States [Member]
Segment Reporting Information [Line Items]
Geographic net sales	362,136	438,461	1,196,965	1,280,026
Long-lived assets	243,633		243,633		190,056
Asia [Member]
Segment Reporting Information [Line Items]
Geographic net sales	100,200	105,422	278,569	328,327
Long-lived assets	77,599		77,599		79,051
Europe [Member]
Segment Reporting Information [Line Items]
Geographic net sales	64,592	69,289	202,985	222,870
Long-lived assets	19,570		19,570		9,537
Other Foreign [Member]
Segment Reporting Information [Line Items]
Geographic net sales	28,301	$ 27,516	81,132	$ 78,192
Long-lived assets	$ 25,456		$ 25,456		$ 22,945