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Revenue
6 Months Ended
Jun. 30, 2019
Revenue Recognition and Deferred Revenue [Abstract]  
Revenue
Revenue

We recognize revenue in accordance with ASC 606, “Revenue from Contracts with Customers” and the related amendments (“ASC 606”). We disaggregate our revenue by geographical region as follows:
Net Sales
 
Three months ended June 30,
 
Six months ended June 30,
 
 
2019
 
2018
 
2019
 
2018
United States
 
$
309.5

 
$
279.4

 
$
634.8

 
$
547.6

Iceland
 
163.6

 
190.6

 
328.4

 
376.9

Total
 
$
473.1

 
$
470.0

 
$
963.2

 
$
924.5


Trade accounts receivable - net as of June 30, 2019 remained flat from December 31, 2018.