Operating Segments And Geographic Area Information (Schedule Of Long-Lived Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Segment Reporting Information [Line Items]
Long-Lived Assets	$ 1,309,917	$ 1,167,823	$ 1,154,410
United States [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	652,022	582,763	569,873
Netherlands [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	185,799	186,960	213,925
Jordan [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	141,725	107,148	109,379
Brazil [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	83,452	75,816	60,743
Germany [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	70,051	67,579	70,128
China [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	64,449	63,672	61,431
France [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	28,652	25,075	21,851
Korea [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	25,008	12,074	73
United Kingdom [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	12,436	13,530	16,935
Other Foreign Countries [Member]
Segment Reporting Information [Line Items]
Long-Lived Assets	$ 46,323	$ 33,206	$ 30,072