Revenues (Tables)

3 Months Ended

Mar. 31, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

Each of the Company’s product lines represented the following approximate percentage of total sales for the three months ended March 31, 2020 and 2019:

	Three Months Ended March 31,
	2020	2019
Nylon	26%	31%
Caprolactam	22%	20%
Ammonium Sulfate Fertilizers	23%	21%
Chemical Intermediates	29%	28%
	100%	100%

The Company's revenues by geographic area for the three months ended March 31, 2020 and 2019 were as follows:

	Three Months Ended March 31,
	2020		2019
United States	$	230,443	$	257,642
International	72,270		57,253
Total	$	302,713	$	314,895

Summary of Deferred Income and Customer Advances

Below is a roll-forward of Deferred income and customer advances for the three months ended March 31, 2020:

Opening balance January 1, 2020	$	19,696
Additions to deferred revenues	678
Less amounts recognized in revenues	(7,304)
Ending balance March 31, 2020	$	13,070