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Note 3 - Long-term Debt (Tables)
3 Months Ended
Mar. 31, 2020
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
   
March 31,
   
December 31,
 
   
2020
   
2019
 
Credit Facilities:                
Revolving credit facility due May 2023   $
23,476
    $
37,838
 
Term loan due February 2024 (“2017 Term Loan”)    
24,000
     
25,500
 
Term loan due January 2026 (“2018 Term Loan”)    
54,167
     
56,488
 
     
101,643
     
119,826
 
Less:
               
Payments due within one year included in current liabilities    
11,464
     
15,286
 
Debt issuance costs    
517
     
537
 
Long-term debt less current maturities
  $
89,662
    $
104,003