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Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Current:
Federal	$ 59,921	$ 42,324	$ (344)
Foreign	10,714	7,720	1,879
State and local	805	5,215	799
Total current provision for income taxes	71,440	55,259	2,334
Deferred:
Federal	10,454	(32,033)	940
Foreign	(1,073)	239	(273)
State and local	763	(3,960)	(443)
Total deferred (benefit) provision for income taxes	10,144	(35,754)	224
Total provision for income taxes	$ 81,584	$ 19,505	$ 2,558

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