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Note 9 - Leases (Tables)
 9 Months Ended
Sep. 30, 2019
Notes Tables  
Lessee, Operating and Finance Lease, Assets and Liabilities [Table Text Block]
   
September
30,
2019
    
December 31,
2018
  
Operating leases:
  
 
 
 
  
 
 
 
Operating lease right-of-use assets
   $
9,448,909
     $
-
  
                 
                 
Other current liabilities
    
959,808
      
-
  
Operating lease liabilities
    
8,617,781
      
-
  
Total operating lease liabilities
   $
9,577,589
     $
-
  
                 
                 
Weighted Average Remaining Lease Term
  
 
 
 
  
 
 
 
Operating Leases (in years)
    
11.2
      
-
  
                 
Weighted Average Discount Rate
  
 
 
 
  
 
 
 
Operating Leases
    
5.0
%
    
-