Debt Obligations (Senior Notes Narrative) (Details) (USD $)			9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 Senior Notes, 12% Fixed Rate, Due 2018 [Member]	Dec. 31, 2012 Senior Notes, 12% Fixed Rate, Due 2018 [Member]	Oct. 15, 2012 Senior Notes, 12% Fixed Rate, Due 2018 [Member]	Feb. 23, 2012 Senior Notes, 12% Fixed Rate, Due 2018 [Member] First Priority Notes [Member]	Feb. 23, 2012 Senior Notes, 12% Fixed Rate, Due 2018 [Member] Second Priority Notes [Member]
Debt Instrument [Line Items]
Outstanding debt	$ 880,408,000	$ 874,192,000	$ 554,000,000	$ 554,000,000
Debt aggregate principal amount						350,000,000	150,000,000
Interest rate			12.00%	12.00%		12.00%	12.00%
Discount	12,476,000	14,686,000	20,000,000
Other financing costs			21,000,000
Private placement offering amount					$ 54,000,000