Revenues

3 Months Ended

Mar. 31, 2020

Revenue from Contract with Customer [Abstract]

Revenue Recognition

We serve approximately 400 customers annually in more than 40 countries and across a wide variety of industries. For the three months ended March 31, 2020 and 2019, the Company's ten largest customers accounted for approximately 43% and 48% of total sales, respectively.

We typically sell to customers under master service agreements, with primarily one-year terms, or by purchase orders. We have historically experienced low customer turnover and have an average customer relationship of approximately 20 years. Our largest customer is Shaw Industries Group Inc. (“Shaw”), a significant consumer of caprolactam and Nylon 6 resin. We sell Nylon 6 resin and caprolactam to Shaw under a long-term agreement. For the three months ended March 31, 2020 and 2019, our sales to Shaw were 17% and 22%, respectively, of our total sales.

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

Deferred Income and Customer Advances

The Company defers revenues when cash payments are received in advance of our performance. Customer advances relate primarily to sales from the ammonium sulfate business. 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

The Company expects to recognize as revenue the March 31, 2020 ending balance of Deferred income and customer advances within one year or less.