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INVENTORIES (Tables)
3 Months Ended
Mar. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventories

Inventories consist of the following:

 

   March 30, 2019   December 31, 2018 
Inventory at FIFO          
Finished products  $21,430   $17,313 
Materials and work in process   64,932    62,975 
Gross inventories   86,362    80,288 
Less:  LIFO reserve   (46,944)   (46,341)
Less:  excess and obsolescence reserve   (2,936)   (2,527)
Net inventories  $36,482   $31,420