Income Taxes Income Taxes - Components of Income Tax Provision (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								11 Months Ended	12 Months Ended		1 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010 Successor Company	Dec. 31, 2012 Successor Company	Dec. 31, 2011 Successor Company	Jan. 31, 2010 Predecessor Company
Current (provision) benefit
Federal									$ (1,263)	$ 4,689	$ 18,955	$ (600)
State and local									3,772	(4,535)	(2,905)	(20)
Total current (provision) benefit									2,509	154	16,050	(620)
Deferred (provision) benefit
Federal									568,938	(3,328)	73,981	(792,162)
State and local									48,668	(3,750)	34,727	(124,759)
Total deferred (provision) benefit									617,606	(7,078)	108,708	(916,921)
(Provision) benefit for income taxes	$ (10,025)	$ 6,641	$ (4,707)	$ 1,167	$ (17,992)	$ (719)	$ 163,714	$ (20,245)	$ 620,115	$ (6,924)	$ 124,758	$ (917,541)