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Future cash outflow to pay for purchases of fixed assets that have occurred.

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Amount of minimum lease payments for capital leases.

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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.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount, before accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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Basis of Presentation (Details) - USD ($) $ in Thousands		9 Months Ended
Basis of Presentation (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 20, 2016
Concentration Risk [Line Items]
Present value of future minimum payments	$ 4,931	$ 4,931
Accrued capital expenditures		$ 2,700	$ 8,900
Elimination of Current and Deferred Tax Liability	$ 41,428
Noble Energy \| Revenue
Concentration Risk [Line Items]
Concentration risk		100.00%
Revolving Credit Facility
Concentration Risk [Line Items]
Debt expense				$ 2,500
Maturity		5 years
Colorado River DevCo LP
Concentration Risk [Line Items]
Noncontrolling interest	20.00%	20.00%
Green River DevCo LP
Concentration Risk [Line Items]
Noncontrolling interest	75.00%	75.00%
Blanco River DevCo
Concentration Risk [Line Items]
Noncontrolling interest	75.00%	75.00%
San Juan River DevCo LP
Concentration Risk [Line Items]
Noncontrolling interest	75.00%	75.00%
Gunnison River DevCo LP
Concentration Risk [Line Items]
Noncontrolling interest	95.00%	95.00%