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Debt Obligations (Senior Notes Narrative) (Details) (USD $)				6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 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	$ 878,277,000	$ 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%
Discount	13,220,000	14,686,000		20,000,000
Other financing costs				21,000,000
Private placement offering amount			$ 125,000,000			$ 54,000,000

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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