Supplementary Information on Oil And Gas Producing Activities (Unaudited) - Summary of Principal Changes in the Aggregate Standardized Measure of Discounted Future Net Cash Flows (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Extractive Industries [Abstract]
Standardized Measure, Beginning of Year	$ 44,314,000	$ 34,295,000
Oil and gas sales, net of production costs	(14,625,871)	(8,648,780)
Changes in prices and future production	(1,676,515)	2,402,924
Extensions, discoveries and improved recovery, net of costs	40,301,999	21,245,578
Sales of Minerals in place-leaseholds	(3,433,255)	(7,591,348)
Change in estimated future development costs	(6,553,408)	18,845,514
Previously estimated development costs incurred	0	0
Revisions of previous quantity estimates	4,682,554	(25,123,031)
Accretion of Discount	4,431,400	3,429,500
Net change in income taxes	(7,071,933)	(365,365)
Timing and Other	6,725,029	5,824,008
Standardized Measure, End of Year	$ 67,094,000	$ 44,314,000