Segment And Geographic Information (Schedule Of Geographic Net Sales And Long-Lived Assets) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Geographic net sales	$ 602,820	$ 608,136
Long-lived assets	376,566		$ 301,589
United States [Member]
Segment Reporting Information [Line Items]
Geographic net sales	418,364	391,967
Long-lived assets	250,535		190,056
Asia [Member]
Segment Reporting Information [Line Items]
Geographic net sales	86,624	106,991
Long-lived assets	77,690		79,051
Europe [Member]
Segment Reporting Information [Line Items]
Geographic net sales	73,345	80,541
Long-lived assets	18,629		9,537
Other Foreign [Member]
Segment Reporting Information [Line Items]
Geographic net sales	24,487	$ 28,637
Long-lived assets	$ 29,712		$ 22,945