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INVENTORIES (Tables)
9 Months Ended
Sep. 26, 2015
INVENTORIES [Abstract]  
Schedule of Inventories

September 26,
2015

December 31,
2014

Inventory at FIFO

   

Finished products

  $ 22,814   $ 20,083

Materials and work in process

  62,715   68,934

Gross inventories

  85,529   89,017

Less:  LIFO reserve

  (42,308 )   (40,578 )

Less: excess and obsolescence reserve  

  (2,460 )   (3,750 )

Net inventories

  $ 40,761   $ 44,689