Other Assets (Tables)

9 Months Ended

Sep. 30, 2017

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Amortization expense on intangible and other assets included in cost of sales and selling, general and administrative expenses in the consolidated statements of operations for the three and nine months ended September 30, 2017 and 2016 were as follows:



	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Cost of sales	$	10,834	$	10,061	$	33,121	$	24,452
Selling, general and administrative	26,792		9,114		81,323		13,888
Total amortization expense	$	37,626	$	19,175	$	114,444	$	38,340

Changes in Carrying Amount of Goodwill

The gross carrying amounts of goodwill and the changes in the carrying amount of goodwill for the nine months ended September 30, 2017 were as follows:



	Olefins Segment		Vinyls Segment		Total
Balance at December 31, 2016	$	29,990	$	916,563	$	946,553
Goodwill acquired during the period	—		—		—
Measurement period adjustment	—		54,605		54,605
Effects of changes in foreign exchange rates	—		10,184		10,184
Balance at September 30, 2017	$	29,990	$	981,352	$	1,011,342