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Note 9 - Term Loans and Line of Credit Agreements (Tables)
 3 Months Ended
Mar. 31, 2020
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
   
March 31, 2020
  
   
Gross Amount
    
Debt Issuance Costs
    
Net Amount
  
Term Loan Agreement
   $
22,741
     $
(405
 )   $
22,336
  
Less current portion
    
1,070
      
(42
 )    
1,028
  
Long-term debt
   $
21,671
     $
(363
 )   $
21,308
  
   
December 31, 2019
  
   
Gross Amount
    
Debt Issuance Costs
    
Net Amount
  
Term Loan Agreement
   $
23,000
     $
(415
 )   $
22,585
  
Less current portion
    
1,057
      
(42
 )    
1,015
  
Long-term debt
   $
21,943
     $
(373
 )   $
21,570
  
Schedule of Maturities of Long-term Debt [Table Text Block]
2021
   $
1,070
  
2022
    
1,125
  
2023
    
1,182
  
2024
    
1,243
  
2025
    
1,306
  
Thereafter
    
16,815
  
Total
   $
22,741