Notes Payable, Long-Term Debt and Other Obligations Non Cash Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Debt Instrument [Line Items]
Amortization of debt discount, net	$ 6,868	$ 14,277	$ 18,708	$ 41,180
Amortization of deferred finance costs	1,085	1,147	3,073	2,910
Non-cash Interest Expense	7,953	16,418	21,781	49,202
Convertible Debt [Member] | 6.75% Variable Interest Senior Convertible Note due 2014 - Vector
Debt Instrument [Line Items]
Acceleration of interest expense	0	0	0	3,679
Convertible Debt [Member] | 6.75% Variable Interest Senior Convertible Exchange Notes
Debt Instrument [Line Items]
Acceleration of interest expense	$ 0	$ 994	$ 0	$ 1,433