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Income Taxes - Components of Net Deferred Tax Assets Liabilities (Details) - USD ($) | Mar. 31, 2016 | Mar. 31, 2015
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Income Tax Disclosure [Abstract] |  |
Percentage depletion carryforwards | $ 1,718,721 | $ 1,535,126
Deferred stock-based compensation | 49,090 | 36,958
Asset retirement obligation | 415,166 | 384,467
Net operating loss | 1,493,914 | 720,308
Other | 6,413 | 11,111
Total deferred tax assets | 3,683,304 | 2,687,970
Excess financial accounting bases over tax bases of property and equipment | 2,834,340 | (3,348,840)
Deferred tax asset (liability) | 848,964 | $ (660,870)
Valuation allowance | $ (848,964) |
Net deferred tax asset (liability) |  | $ (660,870)

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from asset retirement obligations. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68052875&loc=d3e28680-109314 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32632-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32621-109319 + Details
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