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Revenue (Tables)
9 Months Ended
Sep. 30, 2018
Revenue Recognition and Deferred Revenue [Abstract]  
Disaggregation of revenue
We disaggregate our revenue by geographical region as follows:
Net Sales
 
For the three months ended September 30, 2018
 
For the nine months ended September 30, 2018
United States
 
$
286.6

 
$
834.2

Iceland
 
195.2

 
572.1

Total
 
$
481.8

 
$
1,406.3