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Note 4 - Derivative Instruments and Hedging Activities (Tables)
 9 Months Ended
Sep. 30, 2019
Notes Tables  
Schedule Of Derivative Assets (Liabilities) at Fair Value [Table Text Block]
   

September 30,
2019

    

December 31,
2018

  

Commodity contracts

   $ (172 )   $ (160 )

Foreign currency contracts

     (302 )     (117 )

Interest rate swaps

     (11,826 )     8,307