Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details)

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Note 3 - Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Measurements, Recurring [Member] - USD ($)
Jun. 30, 2017
Dec. 31, 2016
Liabilities    
Fair value of liabilities $ 3,267,408 $ 3,921,917
Fair Value, Inputs, Level 1 [Member]    
Liabilities    
Fair value of liabilities 0 0
Fair Value, Inputs, Level 2 [Member]    
Liabilities    
Fair value of liabilities 0 0
Fair Value, Inputs, Level 3 [Member]    
Liabilities    
Fair value of liabilities 3,267,408 3,921,917
Stock Purchase Warrants [Member]    
Liabilities    
Derivative instruments - stock purchase warrants 3,267,408 3,921,917
Stock Purchase Warrants [Member] | Fair Value, Inputs, Level 1 [Member]    
Liabilities    
Derivative instruments - stock purchase warrants 0 0
Stock Purchase Warrants [Member] | Fair Value, Inputs, Level 2 [Member]    
Liabilities    
Derivative instruments - stock purchase warrants 0 0
Stock Purchase Warrants [Member] | Fair Value, Inputs, Level 3 [Member]    
Liabilities    
Derivative instruments - stock purchase warrants $ 3,267,408 $ 3,921,917