Guarantor Obligations, Remaining Exposure Over Accrued Obligation

No definition available.

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- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 55
-Paragraph 40
-Subparagraph (Note 3)
-URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=73718637&loc=d3e25383-109308

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

+ Details

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Balance Type:	debit
Period Type:	duration

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- Details

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- Details

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Commitments and Contingencies (Details) - USD ($)	3 Months Ended			6 Months Ended	9 Months Ended
Commitments and Contingencies (Details) - USD ($)	Sep. 30, 2017	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2016	Sep. 30, 2017	Dec. 31, 2016
Successor
Guarantor Obligations [Line Items]
Throughput obligation	$ 0				$ 0
Future minimum operating lease payments	0				0	$ 0
Coal royalty expense	22,300,000	$ 2,700,000		$ 6,700,000	74,500,000
Successor \| Indemnifications
Guarantor Obligations [Line Items]
Remaining maximum exposure	200,000				200,000
Successor \| Other long-term liabilities \| Indemnifications
Guarantor Obligations [Line Items]
Indemnification accrual	$ 300,000				$ 300,000	300,000
Successor \| Accrued expenses
Guarantor Obligations [Line Items]
Throughput obligation						$ 2,100,000
Predecessor
Guarantor Obligations [Line Items]
Coal royalty expense			$ 3,600,000