Identification of the name or type of counterparty to the derivative instrument.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column A

-Footnote 1

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- Definition

The quantity per day of future oil and gas production being hedged.

+ References

No definition available.

+ Details

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- Definition

Fair value of liability associated with derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 205G

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44C

-Subparagraph a

-Clause 1

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (a),(c)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624163-113959

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- Definition

Fair value of the gross assets less the gross liabilities of a derivative asset or group of derivative assets.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13495-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958

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- Definition

Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

+ References

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- Definition

Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

+ References

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- Definition

Net Increase or Decrease in the fair value of the derivative or group of derivatives included in earnings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5618551-113959

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- Definition

+ References

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Namespace Prefix:	us-gaap_
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- Definition

Fair value of the gross liabilities less the gross assets of a derivative liability or group of derivative liabilities.

+ References

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- Details

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- Definition

The strike price on the price risk option contract such as a put option or a call option.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	instant

- Definition

Reference to the index or unit of measurement for the underlying which establishes the pricing terms of the derivative instrument. For example, the basis on the underlying for a natural gas futures contract might be the NYMEX price per million British thermal units (MMBtu).

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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- Definition

Gain (loss) incurred in risk management activities.

+ References

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- Definition

The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: 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=6943989&loc=d3e3602-108585

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Commodity Price Risk Management (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended						3 Months Ended			3 Months Ended			3 Months Ended			3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Current Asset [Member] Crude Oil Costless Collars [Member]	Dec. 31, 2013 Current Asset [Member] Crude Oil Costless Collars [Member]	Mar. 31, 2014 Current Liability [Member] Crude Oil Costless Collars [Member]	Dec. 31, 2013 Current Liability [Member] Crude Oil Costless Collars [Member]	Mar. 31, 2014 Crude Oil Costless Collar 01/01/14 - 06/30/14 [Member] bbl	Mar. 31, 2014 Crude Oil Costless Collar 01/01/14 - 06/30/14 [Member] Put Option [Member]	Mar. 31, 2014 Crude Oil Costless Collar 01/01/14 - 06/30/14 [Member] Call Option [Member]	Mar. 31, 2014 Crude Oil Costless Collar 01/01/14 - 06/30/14 [Member] bbl	Mar. 31, 2014 Crude Oil Costless Collar 01/01/14 - 06/30/14 [Member] Put Option [Member]	Mar. 31, 2014 Crude Oil Costless Collar 01/01/14 - 06/30/14 [Member] Call Option [Member]	Mar. 31, 2014 Crude Oil Costless Collar 07/01/14 - 12/31/14 [Member] bbl	Mar. 31, 2014 Crude Oil Costless Collar 07/01/14 - 12/31/14 [Member] Put Option [Member]	Mar. 31, 2014 Crude Oil Costless Collar 07/01/14 - 12/31/14 [Member] Call Option [Member]	Mar. 31, 2014 Crude Oil Costless Collar 07/01/14 - 12/31/14 [Member] bbl	Mar. 31, 2014 Crude Oil Costless Collar 07/01/14 - 12/31/14 [Member] Put Option [Member]	Mar. 31, 2014 Crude Oil Costless Collar 07/01/14 - 12/31/14 [Member] Call Option [Member]
Derivative [Line Items]
Counterparty							Wells Fargo			Wells Fargo			Wells Fargo			Wells Fargo
Basis							WTI			WTI			WTI			WTI
Quantity (barrels per day)							300			300			300			300
Strike Price (in dollars per barrel)								90.00	95.00		90.00	97.25		90.00	98.40		90.00	97.40
Derivative Asset, Fair Value, Net [Abstract]
Derivative Assets, Gross			$ 280	$ 345
Derivative Asset, Gross amount offset in			(280)	(331)
Derivative Asset, Net amount of assets			0	14
Derivative Liability, Fair Value, Net [Abstract]
Derivative Liability, Gross					719	611
Derivative Liabilities, Gross amount offset in					(280)	(331)
Derivative Liability, Net amount of assets					439	280
Realized derivative gain (loss)	(158)	14
Unrealized derivative gain (loss)	(173)	(616)
Total realized and unrealized derivative gain (loss)	$ (331)	$ (602)