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Note 4 - Summary of Significant Accounting Policies (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Restrictions on Cash and Cash Equivalents [Table Text Block]
  

June 30, 2021

  

December 31, 2020

 

Cash on consolidated balance sheet

 $3,926,150  $4,541,013 

Restricted cash

  980,907   780,998 

Total cash and restricted cash

 $4,907,057  $5,322,011