Derivative swap type current market price.

No definition available.

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- Definition

Energy volume hedged during period.

+ References

No definition available.

+ Details

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- Definition

Monthly energy volume hedged.

+ References

No definition available.

+ Details

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- Definition

Percentage of expected natural gas production covered by derivative collars.

+ References

No definition available.

+ Details

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- Definition

Percentage Of Expected Natural Gas Production Covered By Fixed Price Hedges

+ References

No definition available.

+ Details

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- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

+ References

Reference 1: 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

+ Details

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- Definition

The cap rate on a price risk derivative such as a cap or collar. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

+ References

No definition available.

+ Details

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- Definition

Floor rate on a price risk derivative such as a floor or a collar. A payment or receipt is triggered if the market rate falls below the floor rate on the contract.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Fixed price related to the price risk swap derivative.

+ References

No definition available.

+ Details

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Derivative and Hedging Financial Instruments - Additional Information (Detail)	Dec. 23, 2014 MMBTU $ / MMBTU	Aug. 20, 2014 MMBTU $ / MMBTU	May. 21, 2014 MMBTU $ / MMBTU	May. 09, 2013 MMBTU $ / MMBTU	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Morgan Stanley Fixed III [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total MMBtu hedged over the period	7,301,209
Fixed price covering percentage on its expected natural gas production	50.00%
Strike Price of fixed price hedges \| $ / MMBTU	1.12
Morgan Stanley Fixed III [Member] \| Maximum [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Monthly volumes declining of MMBtu	266,891
Morgan Stanley Fixed III [Member] \| Minimum [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Monthly volumes declining of MMBtu	104,084
BP Hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Costless collars covering percentage on its expected natural gas production				85.00%
Strike Price of Costless Collar \| $ / MMBTU				4.00
Strike Price of Costless Collar \| $ / MMBTU				4.28
Total MMBtu hedged over the period				3.4
BP Hedge [Member] \| Maximum [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Monthly volumes declining of MMBtu				207,000
BP Hedge [Member] \| Minimum [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Monthly volumes declining of MMBtu				113,000
Morgan Stanley Fixed I [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fixed price covering percentage on its expected natural gas production			90.00%
Strike Price of fixed price hedges \| $ / MMBTU			4.11
Current market price of fixed price hedges \| $ / MMBTU			3.27
Morgan Stanley Fixed I [Member] \| July 2014 to November 2018 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total MMBtu hedged over the period			13,932,171
Morgan Stanley Fixed I [Member] \| Maximum [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Strike Price of fixed price hedges \| $ / MMBTU			4.38
Morgan Stanley Fixed I [Member] \| Maximum [Member] \| July 2014 to November 2018 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Monthly volumes declining of MMBtu			444,534
Morgan Stanley Fixed I [Member] \| Minimum [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Strike Price of fixed price hedges \| $ / MMBTU			4.06
Morgan Stanley Fixed I [Member] \| Minimum [Member] \| July 2014 to November 2018 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Monthly volumes declining of MMBtu			171,940
Morgan Stanley Fixed II [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fixed price covering percentage on its expected natural gas production		90.00%
Strike Price of fixed price hedges \| $ / MMBTU		3.92
Current market price of fixed price hedges \| $ / MMBTU		3.27
Morgan Stanley Fixed II [Member] \| January 2015 to November 2018 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total MMBtu hedged over the period		10,499,038
Morgan Stanley Fixed II [Member] \| Maximum [Member] \| January 2015 to November 2018 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Monthly volumes declining of MMBtu		326,700
Morgan Stanley Fixed II [Member] \| Minimum [Member] \| January 2015 to November 2018 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Monthly volumes declining of MMBtu		45,854
Morgan Stanley Fixed I and Fixed II [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair value of commodity contracts \| $					$ (125,768)
Price Risk Derivative [Member] \| Morgan Stanley Fixed III [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair value of commodity contracts \| $					(859,439)	$ (716,488)
Price Risk Derivative [Member] \| Morgan Stanley Fixed I [Member] \| July 2014 to November 2018 [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair value of commodity contracts \| $					2,315,865	5,878,302
Price Risk Derivative [Member] \| Morgan Stanley Fixed II [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair value of commodity contracts \| $					901,834	1,941,465
Energy Related Derivative [Member] \| BP Hedge [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Fair value of commodity contracts \| $					$ 0	$ 410,389