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Debt Instrument, Convertible, Percent of Stock Receivable

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Debt Instrument, Term of Interest Payments, Paid in Kind

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Debt Instrument, Term of Interest Payments, Paid in Kind (After Refinancing or Repayment)

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Debt Instrument, Variable Rate Floor

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Debtor Reorganization Items, Percentage of Debt Holders Party to Agreement

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No definition available.

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- Definition

Plan of Reorganization, Percentage of Stock to Be Issued

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No definition available.

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Restructuring Contract Termination Period

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No definition available.

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- Definition

Rights Offering, Minimum Equity Valuation

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No definition available.

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- Definition

Rights Offering, Minimum Equity Valuation, Percent of Total Equity

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No definition available.

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- Definition

Rights Offering Period (Post CH11)

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No definition available.

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- Definition

Rights Offering Period (Before Confirmation Date)

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No definition available.

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- Definition

Rights Offering Period (Disclosure Statement Approval)

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- Definition

Rights Offering, Stock to be Issued, Value

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Maximum Ownership Interest Issuable

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No definition available.

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- Definition

Volume-Weighted Average Price Period

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No definition available.

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- Definition

Warrant Expiration Period

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No definition available.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

Amount of prepetition liabilities to be settled in cash.

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-Name Accounting Standards Codification
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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

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No definition available.

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Section S99
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Subsequent Events (Details) - USD ($)		3 Months Ended
Subsequent Events (Details) - USD ($)	May. 11, 2016	Mar. 31, 2016	Mar. 31, 2015	May. 11, 2018	May. 11, 2017
Subsequent Event
Proceeds from borrowings		$ 488,900,000	$ 420,000,000
7.0% Convertible perpetual preferred stock
Subsequent Event
Preferred stock, dividend rate, percentage		7.00%
8.5% Convertible perpetual preferred stock
Subsequent Event
Preferred stock, dividend rate, percentage		8.50%
Senior credit facility
Subsequent Event
Maximum borrowing capacity		$ 1,000,000,000
Subsequent Event \| Restructuring Support Agreement
Subsequent Event
Minimum equity valuation used for rights offering	$ 1,220,000,000
Minimum equity valuation used for rights offering, percent of total equity	90.00%
Rights Offering Period (Disclosure Statement Approval)	30 days
Rights Offering Period (Before Confirmation Date)	15 days
Rights offering period after filing	90 days
Employee Incentive Plan - Maximum ownership interest issuable (percentage)	10.00%
Restructuring contract termination period	225 days
Subsequent Event \| Restructuring Support Agreement \| New Common Stock
Subsequent Event
Stock to be issued under rights offering	$ 150,000,000.0
Subsequent Event \| Restructuring Support Agreement \| New Common Stock \| Warrant [Member]
Subsequent Event
Maximum percent of stock callable by warrants issued	12.50%
Total equity value of warrants issued	$ 1,625,000,000
Volume-Weighted Average Price Period	30 days
Warrant expiration	6 years
Subsequent Event \| Restructuring Support Agreement \| 7.0% Convertible perpetual preferred stock
Subsequent Event
Preferred stock, dividend rate, percentage	7.00%
Subsequent Event \| Restructuring Support Agreement \| 8.5% Convertible perpetual preferred stock
Subsequent Event
Preferred stock, dividend rate, percentage	8.50%
Subsequent Event \| Restructuring Support Agreement \| Holders of Senior Secured Notes \| New Common Stock
Subsequent Event
Percentage of stock to be issued	85.00%
Subsequent Event \| Restructuring Support Agreement \| Holders of Unsecured Claims
Subsequent Event
Cash payments for prepetition obligations	$ 10,000,000
Subsequent Event \| Restructuring Support Agreement \| Holders of Unsecured Claims \| New Common Stock
Subsequent Event
Percentage of stock to be issued	15.00%
Subsequent Event \| Restructuring Support Agreement \| Senior credit facility
Subsequent Event
Percentage of debt holders party to reorganization agreement	98.00%
Repayments of debt	$ 40,000,000
Subsequent Event \| Restructuring Support Agreement \| Secured Notes
Subsequent Event
Percentage of debt holders party to reorganization agreement	79.00%
Subsequent Event \| Restructuring Support Agreement \| Secured Notes \| New Building Note
Subsequent Event
Face amount of debt instrument	$ 35,000,000.0
Term of facility	5 years
Term of interest payments	46 months
Debt Instrument, Term of Interest Payments, Paid in Kind (after refinancing or repayment)	90 days
Subsequent Event \| Restructuring Support Agreement \| Secured Notes \| New Building Note \| Forecast
Subsequent Event
Annual interest rate	6.00%			10.00%	8.00%
Subsequent Event \| Restructuring Support Agreement \| Secured Notes \| New Building Note \| Holders of Unsecured Claims
Subsequent Event
Proceeds from borrowings	$ 20,000,000
Subsequent Event \| Restructuring Support Agreement \| Senior Unsecured Notes
Subsequent Event
Percentage of debt holders party to reorganization agreement	55.00%
Subsequent Event \| Restructuring Support Agreement \| Revolving Credit Facility \| Holders of Senior Credit Facility
Subsequent Event
Cash payments for prepetition obligations	$ 35,000,000
Subsequent Event \| Restructuring Support Agreement \| Revolving Credit Facility \| New Credit Facility
Subsequent Event
Maximum borrowing capacity	$ 425,000,000.0
Term of facility	40 months
Subsequent Event \| Restructuring Support Agreement \| Revolving Credit Facility \| New Credit Facility \| Proved Developed Producing Reserves
Subsequent Event
Percentage of assets pledged as security	95.00%
Subsequent Event \| Restructuring Support Agreement \| Revolving Credit Facility \| New Credit Facility \| Proved Reserves
Subsequent Event
Percentage of assets pledged as security	95.00%
Subsequent Event \| Restructuring Support Agreement \| Revolving Credit Facility \| New Credit Facility \| LIBOR
Subsequent Event
Basis spread on variable rate	4.75%
Variable rate floor	1.00%
Subsequent Event \| Restructuring Support Agreement \| Revolving Credit Facility \| New Credit Facility \| Holders of Senior Credit Facility
Subsequent Event
Face amount of debt instrument	$ 425,000,000
Subsequent Event \| Restructuring Support Agreement \| Convertible Debt \| New Convertible Debt
Subsequent Event
Term of facility	4 years
Annual interest rate	15.00%
Subsequent Event \| Restructuring Support Agreement \| Convertible Debt \| New Convertible Debt \| New Common Stock
Subsequent Event
Percentage of stock receivable upon conversion	26.10%
Subsequent Event \| Restructuring Support Agreement \| Convertible Debt \| New Convertible Debt \| Holders of Senior Secured Notes
Subsequent Event
Face amount of debt instrument	$ 300,000,000.0