Supplementary Information on Oil And Gas Producing Activities (Unaudited) - Summary of Standardized Measure of Discontinued Future Net Cash Flows (Detail) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Extractive Industries [Abstract]
Future Cash Inflows	$ 88,813,496	$ 330,073,018
Future Production Costs	(62,318,720)	(142,451,499)
Future Development Costs	(1,908,925)	(7,852,451)
Future Income Tax Expense	(4,917,170)	(37,524,303)
Future Net Cash Flows	19,668,681	142,244,765
Discounted for Estimated Timing of Cash Flows	(9,853,817)	(75,150,765)
Standardized Measure of Discounted Future Net Cash Flows	$ 9,814,864	$ 67,094,000