Investments (Summary Of Other Equity Investments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Schedule of Equity Method Investments [Line Items]
Total Other Equity Investments	$ 68,230	$ 24,437
Pan [Member]
Schedule of Equity Method Investments [Line Items]
Total Other Equity Investments	2,531	2,939
G5 [Member]
Schedule of Equity Method Investments [Line Items]
Total Other Equity Investments	20,595	21,498
ABS [Member]
Schedule of Equity Method Investments [Line Items]
Total Other Equity Investments	$ 45,104