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INVENTORIES (Tables)
 3 Months Ended
Apr. 02, 2016
INVENTORIES [Abstract]  
Schedule of Inventories

April 2,
2016

December 31,
2015

Inventory at FIFO

   

Finished products

  $ 12,060   $ 16,637

Materials and work in process

  64,955   64,641

Gross inventories

  77,015   81,278

Less:  LIFO reserve

  (42,714 )   (42,061 )

Less: excess and obsolescence reserve  

   (2,027 )   (2,118 )

Net inventories

  $ 32,274   $ 37,099