Noncurrent portion for an asset retirement obligation held for sale.

No definition available.

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- Definition

Business divestiture closing date.

+ References

No definition available.

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- Definition

Business divestitures sale price.

+ References

No definition available.

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- Definition

Production barrels of oil equivalents per day.

+ References

No definition available.

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- Definition

Amount of asset retirement obligations (ARO) costs incurred (whether capitalized or charged to expense) during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

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- Definition

The adjustment to reduce the value of existing agreements that specify the lessee's rights to use the leased property. This expense is charged when the estimates of future profits generated by the leased property are reduced.

+ 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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228

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- Definition

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.

+ References

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=64862545&loc=d3e2921-110230

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 360
-Section 35
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=66906256&loc=d3e66150-109466

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-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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- References

No definition available.

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- Definition

Accumulated impairment of oil and gas property carried under the successful effort method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-10.(b))
-URI http://asc.fasb.org/extlink&oid=50486907&loc=d3e511914-122862

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-SubTopic 235
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e61901-109447

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Oil and Gas Properties - Additional Information (Detail)	3 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2016 USD ($) Boe	Jun. 30, 2016 USD ($) Boe	Sep. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 26, 2016 USD ($)	Jun. 15, 2016 USD ($)
Oil And Gas Exploration And Production Industries Disclosures [Abstract]
Production related to property barrels of oil equivalents per day \| Boe	436	86
Business divestitures sale price						$ 14,000,000	$ 2,200,000
Business divestiture closing date			Oct. 31, 2016
Impairment of oil and gas properties	$ 29,100,000		$ 29,100,000
Asset retirement costs			4,000,000
Related asset retirement liability	4,505,000		4,505,000
Impairment related to leased acreage		$ 1,900,000
Impairment of oil and gas properties	$ 29,144,000		$ 31,082,000	$ 28,622,961	$ 5,478,264
Proven Oil And Gas Properties
Oil And Gas Exploration And Production Industries Disclosures [Abstract]
Impairment of oil and gas properties				19,696,000	$ 5,478,000
Unproved Oil And Gas Properties
Oil And Gas Exploration And Production Industries Disclosures [Abstract]
Impairment of oil and gas properties				$ 8,927,000