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Oil and Gas Properties Additional Details (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014 Well acre
Gain (Loss) on Disposition of Proved Property	$ 9,041
Productive Oil Wells, Number of Wells, Gross	102
Productive Oil Wells, Number of Wells, Net	7
Gas and Oil Area, Undeveloped, Net	571
OKLAHOMA
Gain (Loss) on Disposition of Proved Property	4,758
NORTH DAKOTA
Gain (Loss) on Disposition of Proved Property	$ 4,283

X

- Definition

Amount of gain (loss) on sale or disposal of property with proven oil and gas reserves.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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X

- Definition

Fractional interest owned based on working interests or other economic arrangements of lease area on which wells have not been drilled or completed to a point that would permit the production of commercial quantities of oil and gas regardless of whether or not such area contains proved reserves.

+ References

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

-Publisher SEC

-Name Industry Guide

-Number 2

-Paragraph 5

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X

- Definition

The total number of producing oil wells and oil wells capable of production, in which the entity owns an undivided working interest.

+ References

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

-Publisher SEC

-Name Industry Guide

-Number 2

-Paragraph 4

-Subparagraph A

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X

- Definition

The total number of producing oil wells and oil wells capable of production, in which the entity owns a fractional working interest.

+ References

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

-Publisher SEC

-Name Industry Guide

-Number 2

-Paragraph 4

-Subparagraph A

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