Subsequent Events - Additional Information (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Subsequent Event [Line Items]
Proved properties	$ 9,663,712	$ 9,389,245
Kansas
Subsequent Event [Line Items]
Percentage of working interest	20.00%
Proved properties	$ 34,261
Percentage of working interest owner evaluating results for decision on completion of well and it's economics	50.00%

Oil and Gas properties with proved reserves under the successful effort method.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 360

-Glossary Proved Properties

-URI http://asc.fasb.org/extlink&oid=6522428

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 360

-Section 25

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6474861&loc=d3e64746-109465

Name:	us-gaap_ProvedOilAndGasPropertySuccessfulEffortMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant