Fresh Start Accounting (Narrative) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2016 USD ($)
Fresh Start Adjustment [Line Items]
Threshold voting shares percentage below which existing voting shares holders should receive to qualify for fresh start accounting	50.00%
Enterprise value	$ 714,325
Discount rate	10.00%
Partnership Management Business
Fresh Start Adjustment [Line Items]
Long term growth rate on projected cash flows	1.00%
Discount rate	12.00%
Gas and Oil Business
Fresh Start Adjustment [Line Items]
Discount rate	10.00%

Percentage of assumed long-term growth in cash flows, used as an input to measure enterprise value of the Successor.

No definition available.

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- Definition

Threshold voting shares percentage of post-emergence successor entity below which existing voting shares holders of predecessor company should receive to qualify for fresh-start accounting.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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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 reorganization value related to present value of discounted cash flows of the emerging entity. Reorganization value is the amount attributed to the reconstituted entity, as well as the expected net realizable value of those assets that will be disposed before reconstitution occurs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 05
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=49179835&loc=d3e54813-112758

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56239-112766

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- Details

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