The cash inflow associated with the sale of equity method investments project, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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- Definition

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585

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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.

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Equity Method Investments (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	Feb. 05, 2014	Aug. 31, 2014	Dec. 31, 2014	Nov. 30, 2012	Dec. 31, 2010
Equity method investments
Cash paid by 51% owner under net asset buy-out option to the entity			$ 6,439
WesPac
Equity method investments
Membership interest (as a percent)					50.00%
WesPac & WesPac-Midstream
Equity method investments
Cash proceeds from sale of projects		$ 5,250
Alvah, Inc.
Equity method investments
Membership interest (as a percent)				49.00%
Cash paid by 51% owner under net asset buy-out option to the entity	$ 1,189