Income Taxes (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Change in net deferred income tax liability from the preceding table	$ 89,380
Deferred taxes associated with other comprehensive loss	9,678
Deferred taxes associated with discontinued operations	8,090
Other	11,777
Total Deferred Income Taxes	$ 118,925	$ 66,585	$ (169,764)