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Note 9 - Fair Value Measurements (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]    
Impairment Of Oil And Gas Cost Properties $ 3,726,267 $ 1,928,548
Fair Value, Inputs, Level 3 [Member]    
Asset Retirement Obligation, Liabilities Incurred 49,275 93,526
Asset Retirement Obligation, Liabilities Incurred 49,275 93,526
Impairment Of Oil And Gas Cost Properties $ 3,726,267 $ 1,928,548