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Equity Method Investments (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($) joint_venture	May 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Schedule of Equity Method Investments [Line Items]
Equity method investments, number of joint ventures | joint_venture	3
Investment in joint ventures	$ 246,998		$ 104,770
Red River
Schedule of Equity Method Investments [Line Items]
Ownership interest (as percent)		33.00%
Investment in joint ventures		$ 124,700
Red River Expansion Project
Schedule of Equity Method Investments [Line Items]
Investment in joint ventures		$ 3,500
CP LLC And Rangeland Energy
Schedule of Equity Method Investments [Line Items]
Equity method investments, number of joint ventures | joint_venture	2
CP LLC
Schedule of Equity Method Investments [Line Items]
Ownership interest (as percent)	50.00%
Rangeland Rio
Schedule of Equity Method Investments [Line Items]
Ownership interest (as percent)	33.00%

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Equity Method Investment, Number Of Joint Ventures

+ References

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
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-Publisher FASB
-Name Accounting Standards Codification
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