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Note 3 - Derivative Instruments and Hedging Activities (Tables)
9 Months Ended
Sep. 30, 2016
Notes Tables  
Schedule Of Derivative Assets (Liabilities) at Fair Value [Table Text Block]
   
September
30
,
201
6
   
December
31,
201
5
 
Commodity contracts
  $ 48     $ (400 )
Foreign currency contracts
    417       (171 )
Interest rate swaps
    (3,454 )     (2,618 )