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Note 2 - Summary of Significant Accounting Policies (Details) - Schedule of Accounts, Notes, Loans and Financing Receivable - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Balance at January 1, 2018 $ 218,976  
Provision for the year 13,241 $ 305,519
Balance at December 31, 2018 224,795 $ 218,976
Common Stock Issued in Warrant Surrender [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Write off $ (7,422)