Oil and Gas Properties - Additional Information (Detail) (Oil and Gas Properties [Member], USD $)	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Oil and Gas Properties [Member]
Property, Plant and Equipment [Line Items]
Total additions for oil and gas properties	$ 14,021,282	$ 6,276,278	$ 16,008,089	$ 7,654,169
Depreciation, depletion, and amortization expenses	$ 2,148,847	$ 717,643	$ 4,238,454	$ 1,333,957

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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=31042434&loc=d3e3602-108585

Name:	us-gaap_DepreciationDepletionAndAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration