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Note 7 - Accrued Expenses (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
   

June 30, 2021

   

December 31, 2020

 

Accrued professional fees

  $ 220,140     $ 268,435  

PayOnline accrual

    -       61,719  

Accrued interest

    759,945       409,525  

Accrued bonus

    1,864,304       1,690,556  

Accrued foreign taxes

    (11,475 )     (12,336 )

Other accrued expenses

    249,783       2,186,197  

Total accrued expenses

  $ 3,082,697     $ 4,604,097