ACQUISITIONS AND DIVESTITURES (Details 5) (USD $)	9 Months Ended	0 Months Ended
Sep. 30, 2013	Jul. 19, 2013 Eagle Ford Shale Assets
Divestitures
Proceeds from sale of interests, before post-closing adjustments	$ 160,268,000	$ 147,900,000
Gain (loss) from sale of interests		$ 0

The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations.

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 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration