Sale of Oil and Natural Gas Property Interests - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2016
Discontinued Operations And Disposal Groups [Abstract]
Proceeds from sale of unproved lease properties		$ 4,800,000
Gain or Loss on sale of oil and natural gas properties		0
Sale of conventional oil and gas properties and related equipment	$ 4,700,000	4,700,000
Gain on sale of conventional oil and gas properties and related equipment	1,000,000	1,000,000
Proceeds from sale of unproved lease properties	3,900,000	3,900,000
Gain or Loss on sale of oil and natural gas properties	$ 0	$ 0

Gain Loss On Sale Of Unproved Leases

No definition available.

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- Definition

Proceeds From Sale Of Unproved Leases

+ References

No definition available.

+ Details

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- Definition

Proceeds from sale of unproved property.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

Amount of gain (loss) on sale or disposal of proven and unproven oil and gas properties.

+ References

Reference 1: 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=66902209&loc=d3e3602-108585

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- Definition

Amount of gain (loss) on sale or disposal of property without proven oil and gas reserves.

+ References

+ Details

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- Definition

Amount of divestiture of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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