Area of land held.

No definition available.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ 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 (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

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- Definition

The cash outflow from the acquisition of a mineral right which is the right to extract a mineral from the earth or to receive payment, in the form of royalty, for the extraction of minerals.

+ 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=31042434&loc=d3e3213-108585

+ Details

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ 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=31042434&loc=d3e3213-108585

+ Details

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Acquisitions Acquisition (Details) (USD $)	3 Months Ended		0 Months Ended
Acquisitions Acquisition (Details) (USD $)	Mar. 31, 2015	Mar. 31, 2014	Aug. 28, 2014	Jun. 23, 2014	Feb. 25, 2014 acre	Jun. 11, 2014
Significant Acquisitions and Disposals [Line Items]
Acquisition of mineral interests	$ 0us-gaap_PaymentsToAcquireMineralRights	$ 7,305,000us-gaap_PaymentsToAcquireMineralRights
Midland Basin
Significant Acquisitions and Disposals [Line Items]
Area of Land			8,156
Payments to Acquire Property, Plant, and Equipment			192,500,000
Proved and Unproved Oil and Natural Gas Properties in Glasscock County Texas
Significant Acquisitions and Disposals [Line Items]
Area of Land				24	278
Acquisition of mineral interests					7,300,000
Acquisition of oil and natural gas properties				1,800,000
Proved and Unproved Oil and Natural Gas Properties in Reagan County Texas
Significant Acquisitions and Disposals [Line Items]
Area of Land						460
Acquisition of oil and natural gas properties						$ 4,700,000