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Note 4 - Related Party Transactions (Tables)
 12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Related Party Transactions [Table Text Block]
   
2019
    
2018
  
Balance, beginning of year
  
$
13,955,097
     $
15,577,316
  
Additions
  
 
5,934,975
      
2,069,000
  
Amounts collected
  
 
(5,338,836
)
    
(2,669,653
 )
Change in related parties
  
 
-
      
(1,021,566
 )
Balance, end of year
  
$
14,551,236
     $
13,955,097