Basis of Presentation (Details Textuals) $ in Thousands	3 Months Ended
Mar. 31, 2016 USD ($) $ / Mcf $ / Barrel	Mar. 31, 2015 USD ($) $ / Mcf $ / Barrel
Accounting Policies [Abstract]
Write-down of oil and natural gas properties \| $	$ 256,000	$ 146,200
Oil
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Oil and Natural Gas Prices \| $ / Barrel	44.03	79.55
Natural Gas
Average Sales Price and Production Costs Per Unit of Production [Line Items]
Oil and Natural Gas Prices \| $ / Mcf	2.22	3.95

The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51719941&loc=d3e2921-110230

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 360
-Section 35
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=28370743&loc=d3e66150-109466

Reference 3: 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=56944662&loc=d3e3602-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration