Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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Contractual interest rate for funds borrowed, under the debt agreement.

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

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The amount of debt and related accrued interest included in liabilities subject to compromise.

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt Obligations (Schedule Of Debt) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Oct. 10, 2014	Jul. 31, 2011	Dec. 31, 2012
Debt Instrument [Line Items]
Long-term debt, gross	$ 1,230,246us-gaap_DebtInstrumentCarryingAmount	$ 882,600us-gaap_DebtInstrumentCarryingAmount
Less: Debt Discount	(7,819)	(11,722)
Less: Liabilities Subject to Compromise	(790,246)
Less: current maturities	(432,181)us-gaap_LongTermDebtCurrent
Long-term debt		870,878us-gaap_LongTermDebtNoncurrent
Senior Notes,12% Fixed Rate, Due 2018 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	554,000	554,000
Interest rate	12.00%
Convertible Senior Notes, 5.5% Fixed Rate, Due 2016 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	135,000	135,000
Interest rate	5.50%	5.50%	5.50%	5.50%
Convertible bonds, 11.5% until March 31, 2014 and 7.5% thereafter, due 2016 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	83,746	78,437
Interest rate	11.50%	11.50%			11.50%
7.5% Fixed Rate [Member]
Debt Instrument [Line Items]
Interest rate	7.50%	7.50%	7.50%
Convertible Senior Notes, 6.5% Fixed Rate, Due 2017 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	17,500
Interest rate	6.50%	6.50%
Amended Term Loan Facility, Due 2017 [Member]
Debt Instrument [Line Items]
Long-term debt, gross	440,000
Revolving Credit Facility, 13% Fixed Rate, Due 2014 [Member]
Debt Instrument [Line Items]
Long-term debt, gross		$ 115,163
Interest rate	13.00%	13.00%