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INVENTORIES (Details) - USD ($)
$ in Thousands
Jun. 27, 2015
Dec. 31, 2014
Inventory at FIFO    
Finished products $ 16,564 $ 20,083
Materials and work in process 61,359 68,934
Gross inventories 77,923 89,017
Less: LIFO reserve (41,614) (40,578)
Less: excess and obsolescence reserve (2,120) (3,750)
Net inventories $ 34,189 $ 44,689