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Note 8 - Debt (Tables)
9 Months Ended
Sep. 30, 2019
Notes Tables  
Schedule of Debt [Table Text Block]
   
As of
 
   
September 30,
   
December 31,
 
(in thousands)
 
2019
   
2018
 
Asset-based revolving credit facility due December 8, 2022
  $
223,004
    $
302,530
 
Total debt
   
223,004
     
302,530
 
Less current amount
   
-
     
-
 
Total long-term debt
  $
223,004
    $
302,530