Income Taxes (Details Textual) (USD $)	3 Months Ended		5 Months Ended	6 Months Ended	12 Months Ended		1 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2013	Dec. 31, 2011	Jan. 24, 2011 Predecessor Company [Member]
Income Tax Contingency [Line Items]
Income tax benefit (expense)	$ 18,211,000	$ 22,821,000	$ 38,176,000	$ 42,469,000			$ (279,889,000)
Income from the discharge of indebtedness for tax purposes as defined by the IRS			0				1,045,400,000
Income before income taxes	(55,284,000)	(49,918,000)	(89,696,000)	(126,254,000)			866,796,000
Effective tax expense (benefit) rate	(32.90%)	(45.70%)	(42.60%)	33.60%			32.30%
Federal statutory rate	35.00%	35.00%	35.00%	35.00%			35.00%
Payment of interest and penalties	0	0	0	0			0
Income Taxes (Textual) [Abstract]
Effective tax benefit rate without prior adjustment		38.90%	38.90%
NOL carryforwards	164,700,000			164,700,000
State NOL deferred tax asset	10,100,000			10,100,000
Estimated NOL tax attribute reduction	562,600,000			562,600,000
Expiration period of NOL carryforwards				2021 to 2031
Tax valuation allowance	181,800,000			181,800,000		172,900,000
Federal tax valuation allowance	153,200,000			153,200,000		144,900,000
State tax valuation allowance	28,600,000			28,600,000		28,000,000
Decrease in valuation allowance	500,000			1,000,000
Unrecognized tax benefits, total	3,900,000			3,900,000		2,900,000
Unrecognized tax benefits, affect tax rate if recognized	2,900,000			2,900,000
Decrease in unrecognized tax benefits					0
Increase unrecognized tax benefits					0
Accrued interest and penalties on unrecognized tax benefits	0			0		0
Number of additional jurisdictional tax audits	$ 0			$ 0		$ 0