Inventories

6 Months Ended

Jun. 30, 2015

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consist of the following:

	June 30, 2015		December 31, 2014
Finished products	$	280,317	$	300,909
Feedstock, additives and chemicals	134,369		158,635
Materials and supplies	71,611		66,232
Inventories	$	486,297	$	525,776