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Inventories
3 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
Inventories
Inventories
Inventories consist of the following:


March 31,
2018

December 31,
2017
Finished products

$
4,844


$
5,244

Feedstock, additives and chemicals

327


346

Inventories

$
5,171


$
5,590