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Note 5 - Intangible Assets (Tables)
9 Months Ended
Sep. 30, 2018
Disclosure Text Block [Abstract]  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Intangible assets consisted of the following as of September 30, 2018 and December 31, 2017:

   

September 30, 2018

   

December 31, 2017

 
                 

eCommerce platform

  $ 1,208,200     $ 1,208,200  

Customer relationship

    6,150,559       6,150,559  

Trademarks

    200,000       200,000  

Less: accumulated amortization

    (3,661,179

)

    (3,356,151

)

    $ 3,897,580     $ 4,202,608  
Finite-lived Intangible Assets Amortization Expense [Table Text Block]
Estimated amortization expense relating to the existing intangible assets with finite lives for each of the next five years is as follows:

12 months ending September 30,

       

2019

  $ 406,704  

2020

    406,704  

2021

    406,704  

2022

    406,704  

2023

    406,704