Income Taxes (Income Tax Expense (Benefit)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Current income taxes: U.S. federal	$ 13,957	$ 14,052	$ (78,051)
Current income taxes: State and local	5,118	1,514	1,139
Current income taxes: Foreign	7,190	8,426	20,797
Total current income taxes	26,265	23,992	(56,115)
Deferred income taxes: U.S. federal	8,994	(8,578)	18,082
Deferred income taxes: State and local	(3,488)	18,562	(6,931)
Deferred income taxes: Foreign	(10,122)	(31,263)	(31,730)
Total deferred income taxes	(4,616)	(21,279)	(20,579)
Income tax expense (benefit)	$ 21,649	$ 2,713	$ (76,694)