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Inventories (Tables)
3 Months Ended
Mar. 31, 2016
Inventory Disclosure [Abstract]  
Summary of Inventories, at LIFO Value

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

 

     March 31,
2016
     December 31,
2015
 

Finished goods

   $ 28,410       $ 24,961   

Raw materials

     20,495         21,384   
  

 

 

    

 

 

 

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

     48,905         46,345   

Reserve to adjust inventories to LIFO value

     (23,245      (23,241
  

 

 

    

 

 

 

Total LIFO inventories

   $ 25,660       $ 23,104