Debt (Details) (USD $) Share data in Millions, unless otherwise specified	0 Months Ended	3 Months Ended	6 Months Ended				6 Months Ended			6 Months Ended		0 Months Ended	3 Months Ended
	Apr. 23, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2013 2011 term loan A	Jun. 30, 2014 2011 term loan B	Dec. 31, 2013 2011 term loan B	Jun. 30, 2014 2011 term loan B Minimum	Jun. 30, 2014 Revolving Credit Facility	Jun. 30, 2014 Revolving credit facility and term loan B	Apr. 23, 2014 9.875% senior notes	Jun. 30, 2014 9.875% senior notes	Dec. 31, 2013 9.875% senior notes	Jun. 30, 2014 8.50% senior notes	Dec. 31, 2013 8.50% senior notes	Jun. 30, 2014 9.50% senior secured notes due 2019	Dec. 31, 2013 9.50% senior secured notes due 2019	Sep. 27, 2013 9.50% senior secured notes due 2019	Jun. 30, 2014 9.50% add-on senior secured notes due 2019	Mar. 27, 2014 9.50% add-on senior secured notes due 2019	Jun. 30, 2014 11.0% / 12.0% senior secured PIK toggle notes	Jun. 30, 2014 11.0% / 12.0% senior secured PIK toggle notes Minimum	Jun. 30, 2014 11.0% / 12.0% senior secured PIK toggle notes Maximum	Jun. 30, 2014 Other	Dec. 31, 2013 Other
Debt instrument
Debt discount, net		$ (23,247,000)	$ (23,247,000)		$ (20,788,000)	$ (5,514,000)	$ (13,494,000)	$ (9,597,000)		$ (7,437,000)			$ (2,800,000)	$ (3,169,000)			$ (2,344,000)	$ (2,508,000)
Total debt		2,896,304,000	2,896,304,000		2,778,832,000	406,566,000	978,178,000	978,178,000					465,000,000	500,000,000	450,000,000	450,000,000	450,000,000	450,000,000		200,000,000		350,000,000			26,373,000	14,876,000
Less current debt		(15,353,000)	(15,353,000)		(9,210,000)
Total long term debt		2,880,951,000	2,880,951,000		2,769,622,000
Weighted average stated interest rate (as a percent)							7.25%						9.875%		8.50%		9.50%			9.50%		11.00%
Interest rate (as a percent)													9.875%		8.50%		9.50%		9.50%	9.50%	9.50%		11.00%	12.00%
Debt agreements
Debt instrument, description of variable rate basis											LIBOR or CDOR
Basis spread on variable rate (as a percent)							6.75%			5.50%
Rate of LIBOR floor (as a percent)									1.00%
Common stock issued in exchange of debt instrument	3.15
Aggregate principal amount of debt exchanged												35,000,000
Gain (loss) on extinguishment of debt		11,397,000	(2,492,000)	(6,001,000)									11,400,000
Debt repayment schedule, excluding interest
2014		7,836,000	7,836,000																						7,836,000
2015		12,775,000	12,775,000																						12,775,000
2016		5,762,000	5,762,000																						5,762,000
2018		978,178,000	978,178,000				978,178,000
Thereafter		$ 1,915,000,000	$ 1,915,000,000										$ 465,000,000		$ 450,000,000		$ 450,000,000			$ 200,000,000		$ 350,000,000