Oil and Gas Properties - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Depreciation, depletion, and amortization expenses	$ 84,589	$ 88,314
Oil and Gas Properties [Member]
Property, Plant and Equipment [Line Items]
Total additions for oil and gas properties	32,709,147	29,708,602
Depreciation, depletion, and amortization expenses	$ 8,499,325	$ 5,664,047