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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Geographic net sales	$ 525,951	$ 555,229	$ 1,531,881	$ 1,759,651
Long-lived assets	351,964		351,964		$ 367,402
United States [Member]
Segment Reporting Information [Line Items]
Geographic net sales	346,849	362,136	1,001,725	1,196,965
Long-lived assets	239,332		239,332		247,074
Singapore [Member]
Segment Reporting Information [Line Items]
Geographic net sales	51,267	51,025	161,805	135,429
Asia [Member]
Segment Reporting Information [Line Items]
Geographic net sales	48,337	49,175	126,863	143,140
Long-lived assets	70,975		70,975		76,507
Europe [Member]
Segment Reporting Information [Line Items]
Geographic net sales	55,372	64,592	177,651	202,985
Long-lived assets	18,438		18,438		20,258
Other Foreign [Member]
Segment Reporting Information [Line Items]
Geographic net sales	24,126	$ 28,301	63,837	$ 81,132
Long-lived assets	$ 23,219		$ 23,219		$ 23,563