Income Taxes (Difference In Income Taxes From Amounts Computed By Applying Federal Statutory Rates Recorded) (Detail) (USD $)
In Thousands, unless otherwise specified
10 Months Ended 12 Months Ended 2 Months Ended 12 Months Ended
Dec. 31, 2012
Successor [Member]
Dec. 31, 2013
Successor [Member]
Feb. 24, 2012
Predecessor [Member]
Dec. 31, 2011
Predecessor [Member]
Deferred Income Tax Assets And Liabilities [Line Items]        
(Provision) benefit for federal income taxes at the statutory rate $ 3,098 $ (18,656) $ (79,935) $ 67,662
Provision for state income taxes, net of federal income tax benefits (7) 13,297    (6)
Change in valuation allowance (2,195) 153,526 (14,991) (66,265)
Nondeductible items-reorganization costs (709) 0 94,925 (1,379)
Nondeductible items-other (194) 2,778 (3) (22)
Cancellation of indebtedness attribute reduction    (70,993)      
Other, net (1) (4) 2,350 4   
(Provision) benefit from income taxes $ (11) $ 82,302    $ (10)