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Note 3 - Cash, Cash Equivalents, and Restricted Cash (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Restrictions on Cash and Cash Equivalents [Table Text Block]
   

June 30,

   

December 31,

 
   

2022

   

2021

 
                 

Cash and cash equivalents

  $ 40,024,146     $ 72,508,528  

Funds held as collateral

    21,662,721       9,185,872  
                 

Total Cash, Cash Equivalents, and Restricted Cash as Presented in the Consolidated Statement of Cash Flows

  $ 61,686,867     $ 81,694,400