Equity Method Investment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Equity Method Investment
Carrying value of investment	$ 68,299
Distribution of earnings from unconsolidated affiliates	7,702
Partnership’s share of net income	485
Stonewall Gas Gathering LLC
Equity Method Investment
Carrying value of investment	68,300	$ 0
Distribution of earnings from unconsolidated affiliates	7,700
Partnership’s share of net income	$ 500	$ 0

This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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-Publisher FASB
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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+ References

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