Income Taxes - Components of Net Deferred Tax Assets (Liabilities) (Details) - USD ($)	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Percentage depletion carryforwards	$ 1,786,522	$ 1,718,721
Deferred stock-based compensation	52,654	49,090
Asset retirement obligation	332,685	415,166
Net operating loss	1,012,138	1,493,914
Other	7,170	6,413
Total deferred tax assets	3,191,169	3,683,304
Excess financial accounting bases over tax bases of property and equipment	2,052,749	2,834,340
Deferred tax asset	1,138,420	848,964
Valuation allowance	(1,138,420)	(848,964)
Net deferred tax liability