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INVENTORIES (Tables)
3 Months Ended
Apr. 01, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventories

 

   April 1, 2017   December 31, 2016 
Inventory at FIFO          
Finished products  $27,193   $24,100 
Materials and work in process   73,585    75,317 
Gross inventories   100,778    99,417 
Less:  LIFO reserve   (43,267)   (42,542)
Less:  excess and obsolescence reserve   (2,553)   (2,340)
Net inventories  $54,958   $54,535