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Note 3 - Notes Receivable (Details Textual) - USD ($)
1 Months Ended 3 Months Ended
Mar. 16, 2018
May 09, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Privately-Held Identity and Professional Services Company With Ties to the FinTech Industry [Member]          
Receivable Commitment to Lend         $ 1,500,000
Payments to Acquire Notes Receivable $ 250,000     $ 500,000 $ 750,000
Financing Receivable, Gross       $ 1,250,000  
Notes Receivable, Stated Interest Rate 6.00%   6.00%    
Notes Receivable, Renewal Term     1 year    
Warrants, Exercised, Percentage     14.00%    
Notes Receiavble Term 180 days        
Privately-Held Identity and Professional Services Company With Ties to the FinTech Industry [Member] | Subsequent Event [Member]          
Payments to Acquire Notes Receivable   $ 250,000      
Private Limited India Based Company in the FinTech Industry [Member]          
Receivable Commitment to Lend     $ 435,000    
Payments to Acquire Notes Receivable     $ 235,000    
Notes Receivable, Stated Interest Rate     5.00%    
Private Limited India Based Company in the FinTech Industry [Member] | Maximum [Member]          
Notes Receivable, Conversion, Percentage     10.00%