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Inventories (Tables)
 9 Months Ended
Sep. 30, 2017
Inventory Disclosure [Abstract]  
Summary of Inventories

Inventories valued at LIFO (last-in, first-out), consist of the following (in thousands):

 

     September 30,
2017		      December 31,
2016		  

Finished goods

    $ 23,486      $ 29,686  

Raw materials

      21,344        20,231  
  

 

 

     

 

 

  

Total FIFO (first-in, first-out) inventories

      44,830        49,917  

Reserve to adjust inventories to LIFO value

      (21,371 )       (21,371 ) 
  

 

 

     

 

 

  

Total LIFO inventories

    $ 23,459      $ 28,546  
  

 

 

     

 

 

  

 

Inventories valued at lower of cost (FIFO method) and net realizable value consist of the following (in thousands):

 

     September 30,
2017		      December 31,
2016		  

Work-in-process

    $ 580      $ —  

Raw materials

      1,990        —  
  

 

 

     

 

 

  

Total FIFO inventories

    $ 2,570      $ —