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Note 12 - Paycheck Protection Program Loan (Tables)
 6 Months Ended
Jun. 30, 2020
Notes Tables  
Schedule of Debt [Table Text Block]
   
June 30, 2020
    
December 31, 2019
  
PPP Loan, .98%, due April 2022:
                
Principal
   $
1,572
     $
-
  
Accrued interest
    
4
      
-
  
    $
1,576
     $
-
  
                 
PPP Loan payable:
                
Current portion
   $
695
      
 
  
Long-term portion
    
881
      
 
  
    $
1,576
     $
-