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- Definition

Contractual Obligation, Term

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- Definition

Long-term Purchase Commitment, Remaining Obligation

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- Definition

Payment for Long-term Purchase Commitment

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- Definition

Supply Agreement, Term

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- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

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No definition available.

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- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
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- Definition

The minimum amount the entity agreed to spend under the long-term purchase commitment.

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No definition available.

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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

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- Definition

Best estimate of the loss exposure for a reasonably possible liability for product liability damages for which no accrual has been recorded.

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-Topic 450
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Commitments and Contingencies (Details) - USD ($) $ in Thousands		1 Months Ended		3 Months Ended				9 Months Ended
	Feb. 17, 2017	May 31, 2018	Apr. 30, 2018	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2015	Sep. 30, 2018	Sep. 30, 2017
Drilling Rig Commitments
Commitments and Contingencies (Textual) [Abstract]
Maximum termination outstanding obligations of contracts				$ 32,790				$ 32,790
Outside Operated Drilling Commitments
Commitments and Contingencies (Textual) [Abstract]
Maximum termination outstanding obligations of contracts				44,234				44,234
Loving County System Agreement
Commitments and Contingencies (Textual) [Abstract]
Agreement term							15 years
Deficiency fee required to be paid								12,500
Capital Addition Purchase Commitments
Commitments and Contingencies (Textual) [Abstract]
Remaining commitments								55,300
Payment for long-term purchase commitment				2,000				5,600
Remaining purchase obligation				0				0
Field Compression and Amine Gas Treatment
Commitments and Contingencies (Textual) [Abstract]
Remaining commitments								24,800
Payment for long-term purchase commitment				6,300				12,800
Remaining purchase obligation				12,000				12,000
Corporate Joint Venture \| San Mateo Midstream
Commitments and Contingencies (Textual) [Abstract]
Contractual obligation				222,000				222,000
Rustler Breaks and Wolf Asset Area \| Corporate Joint Venture \| San Mateo Midstream
Commitments and Contingencies (Textual) [Abstract]
Term of contractual obligation	15 years
Rustler Breaks Asset Area \| Corporate Joint Venture \| San Mateo Midstream
Commitments and Contingencies (Textual) [Abstract]
Term of contractual obligation	15 years
Natural Gas Transportation Agreement \| Eddy County
Commitments and Contingencies (Textual) [Abstract]
Agreement term					18 years
Contractual obligation				45,200				$ 45,200
Natural Gas Transportation and Fractionation Agreement \| Eddy County
Commitments and Contingencies (Textual) [Abstract]
Agreement term								7 years
Contractual obligation				132,300				$ 132,300
16-Year Fixed Fee Natural Gas Transportation Agreement \| Eddy County
Commitments and Contingencies (Textual) [Abstract]
Agreement term			16 years
Contractual obligation				56,800				56,800
10-Year Fixed Fee Natural Gas Transportation Agreement \| Eddy County
Commitments and Contingencies (Textual) [Abstract]
Agreement term		10 years
Contractual obligation				200,600				200,600
Natural Gas Transportation Agreement \| Eddy County
Commitments and Contingencies (Textual) [Abstract]
Contractual obligation				3,600				3,600
Natural Gas, Gathering, Transportation, Marketing and Processing [Member] \| Loving County System Agreement
Commitments and Contingencies (Textual) [Abstract]
Cost of Goods and Services Sold				4,800		$ 4,000		12,200	$ 10,800
Transportation Fees [Member] \| Eddy County
Commitments and Contingencies (Textual) [Abstract]
Cost of Goods and Services Sold				1,000				2,500
Transportation Fees [Member] \| Natural Gas Transportation Agreement \| Eddy County
Commitments and Contingencies (Textual) [Abstract]
Cost of Goods and Services Sold				$ 900				$ 1,100