Fixed price related to the price risk swap derivative.

No definition available.

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Data Type:	us-types:perUnitItemType
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- Definition

Fractional interest owned based on working interests or other economic arrangements of area spaced or assigned to productive wells.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1208
-Paragraph (a)

+ Details

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- Definition

Amount of daily production of the applicable energy source.

+ References

No definition available.

+ Details

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- Definition

The cash outflow to purchase of mineral interests in oil and gas properties for use in the normal oil and gas operations and not intended for resale.

+ 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 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585

+ Details

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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- Details

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- Details

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- Details

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- Details

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Subsequent Event (Details) $ in Millions		1 Months Ended	2 Months Ended	12 Months Ended
Subsequent Event (Details) $ in Millions	Feb. 28, 2018 USD ($) a $ / bbl	Aug. 31, 2017 USD ($) a	Feb. 28, 2018 a bbl $ / bbl	Dec. 31, 2017 bbl $ / bbl
Subsequent Event [Line Items]
Mineral acres acquired (acre) \| a		973
Acquisition purchase price \| $		$ 3.4
2018 [Member] \| Fixed Swap [Member] \| Oil - WTI [Member]
Subsequent Event [Line Items]
Daily volume (bbl) \| bbl				3,149
Swap price (in usd per bbl) \| $ / bbl				50.38
2018 [Member] \| Fixed Swap [Member] \| Subsequent Event [Member] \| Oil - WTI [Member]
Subsequent Event [Line Items]
Daily volume (bbl) \| bbl			1,300
Swap price (in usd per bbl) \| $ / bbl	61.40		61.40
2019 [Member] \| Fixed Swap [Member] \| Oil - WTI [Member]
Subsequent Event [Line Items]
Daily volume (bbl) \| bbl				2,200
Swap price (in usd per bbl) \| $ / bbl				55.27
2019 [Member] \| Fixed Swap [Member] \| Subsequent Event [Member] \| Oil - WTI [Member]
Subsequent Event [Line Items]
Daily volume (bbl) \| bbl			600
Swap price (in usd per bbl) \| $ / bbl	57.06		57.06
2020 [Member] \| Fixed Swap [Member] \| Subsequent Event [Member] \| Oil - WTI [Member]
Subsequent Event [Line Items]
Daily volume (bbl) \| bbl			2,200
Swap price (in usd per bbl) \| $ / bbl	54.38		54.38
Property in Winkler County, Texas [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Mineral acres acquired (acre) \| a	944		944
Acquisition purchase price \| $	$ 14.3