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Note 2 - Note Receivable (Details Textual) - USD ($)
Feb. 02, 2016
Dec. 31, 2016
Dec. 31, 2015
Financing Receivable, Net   $ 200,000
C2Go Loan [Member]      
Financing Receivable, Net $ 200,000    
Notes Receivable, Stated Interest Rate 10.00%    
Notes Receivable, Term 1 year 180 days    
Notes Receivable Repayment, Shares of Payee Issued to Company, Percent 5.00%    
Notes Receivable, Interest Rate in Event of Default 18.00%    
Loans and Leases Receivable, Allowance $ 0