Inventories

6 Months Ended

Jun. 30, 2016

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consist of the following:

	June 30, 2016		December 31, 2015
Finished products	$	253,828	$	253,338
Feedstock, additives and chemicals	118,262		106,435
Materials and supplies	76,436		74,287
Inventories	$	448,526	$	434,060