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INVENTORIES (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 28, 2013
Dec. 31, 2012
Inventory at FIFO    
Finished products $ 5,585 $ 3,615
Materials and work in process 55,494 52,212
Gross inventories 61,079 55,827
Less: LIFO reserve (39,145) (38,089)
Less: excess and obsolescence reserve (1,966) (1,729)
Net inventories $ 19,968 $ 16,009