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Note 17 - Accumulated Other Comprehensive Loss (Tables)
3 Months Ended
Apr. 01, 2018
Notes Tables  
Schedule of Stockholders Equity [Table Text Block]
   
April 1,
   
December 31,
 
   
2018
   
2017
 
   
(Unaudited)
   
 
 
 
Foreign currency translation adjustments
  $
(10,507
)   $
(10,915
)
Employee benefit related adjustments – U.S.
   
(14,748
)    
(14,748
)
Employee benefit related adjustments – Mexico
   
112
     
112
 
Accumulated other comprehensive loss
  $
(25,143
)   $
(25,551
)