Fresh-Start Adjustment, Increase (Decrease), Above Market Contracts, Current

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- Definition

Fresh-Start Adjustment, Increase (Decrease), Above Market Sales Contract, Noncurrent

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- Definition

Fresh-Start Adjustment, Increase (Decrease), Below Market Sales Contracts, Current

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Fresh-Start Adjustment, Increase (Decrease), Below Market Sales Contracts, Noncurrent

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- Definition

Fresh-Start Adjustment, Increase (Decrease), Insurance Receivable, Noncurrent

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No definition available.

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- Definition

Fresh-Start Adjustment, Increase (Decrease), Other Sundry Liabilities, Noncurrent

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No definition available.

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- Definition

Fresh-Start Adjustment, Increase (Decrease), Prepaid Expenses

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No definition available.

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- Definition

Fresh-Start Adjustment, Increase (Decrease), Prepaid Expenses, Noncurrent

+ References

No definition available.

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- Definition

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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-Name Accounting Standards Codification
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Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

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- Definition

Amount of fresh-start adjustment to inventories.

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Total fresh-start adjustment to property and equipment, net.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer.

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- Definition

Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Emergence from Bankruptcy and Fresh Start Accounting (Additional Information to Liabilities Subject to Compromise) (Details) - USD ($) $ in Thousands	Oct. 05, 2016	Oct. 01, 2016	Dec. 31, 2016	Dec. 31, 2015
Fresh-Start Adjustment [Line Items]
Fair value of senior notes and other long-term debt, including amounts classified as current			$ 362,900	$ 937,100
Current maturities of debt				$ 5,042,353
Insurance receivable, current			800
Decrease in property plant and equipment, net		$ 2,363,829
Successor [Member]
Fresh-Start Adjustment [Line Items]
Current maturities of debt			11,038
Term Loan Due 2021 [Member]
Fresh-Start Adjustment [Line Items]
Term loan			325,684
Term Loan Due 2021 [Member] \| Successor [Member]
Fresh-Start Adjustment [Line Items]
Fair value of senior notes and other long-term debt, including amounts classified as current		326,500
Term loan			$ 325,684
Current maturities of debt		$ 3,300
Minimum [Member] \| Discounted Cash Flow Valuation Technique [Member]
Fresh-Start Adjustment [Line Items]
Discount rate (percent)	13.25%
Maximum [Member] \| Discounted Cash Flow Valuation Technique [Member]
Fresh-Start Adjustment [Line Items]
Discount rate (percent)	15.25%
Asset Retirement Obligation Costs [Member] \| Minimum [Member] \| Discounted Cash Flow Valuation Technique [Member]
Fresh-Start Adjustment [Line Items]
Discount rate (percent)		7.06%
Asset Retirement Obligation Costs [Member] \| Maximum [Member] \| Discounted Cash Flow Valuation Technique [Member]
Fresh-Start Adjustment [Line Items]
Discount rate (percent)		9.08%
Plant and Equipment, Net [Member]
Fresh-Start Adjustment [Line Items]
Decrease in property plant and equipment, net		$ 405,259
Plant and Equipment, Net [Member] \| Market Approach and Cost Approach Valuation Techniques [Member] \| Successor [Member]
Fresh-Start Adjustment [Line Items]
Fair value of property, plant and equipment, net		407,600
Coal Properties, Net [Member]
Fresh-Start Adjustment [Line Items]
Decrease in property plant and equipment, net		1,971,314
Coal Properties, Net [Member] \| Discounted Cash Flow and Market Approach Valuation Techniques [Member] \| Successor [Member]
Fresh-Start Adjustment [Line Items]
Fair value of property, plant and equipment, net		387,500
Fresh Start Adjustments [Member]
Fresh-Start Adjustment [Line Items]
Increase (decrease) in inventories		(21,078)
Increase in current above market sales contracts		71,100
Decrease in prepaid expenses		11,300
Decrease in property plant and equipment, net		2,363,829
Increase in current below market sales contracts		27,800
Increase in noncurrent above market sales contract		26,000
Increase in noncurrent insurance receivables		18,600
Decrease in noncurrent prepaid balances		13,200
Increase in noncurrent below market sales contracts		3,900
Decrease in miscellaneous noncurrent liabilities		3,100
Fresh Start Adjustments [Member] \| Coal Inventory [Member]
Fresh-Start Adjustment [Line Items]
Increase (decrease) in inventories		7,300
Fresh Start Adjustments [Member] \| Critical Spare Parts [Member]
Fresh-Start Adjustment [Line Items]
Increase (decrease) in inventories		$ (28,400)
Equity Method Investments [Member] \| Level 3 [Member] \| Discounted Cash Flow Approach and Comparable Company Approach [Member]
Fresh-Start Adjustment [Line Items]
Discount rate (percent)		14.00%