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Inventories (Tables)
3 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
Components of Inventories

The components of inventories consist of the following:

 

 

 

March 31,

2018

 

 

December 31,

2017

 

Finished products

 

$

125,498

 

 

$

107,595

 

Raw materials

 

 

17,733

 

 

 

15,529

 

 

 

$

143,231

 

 

$

123,124