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Segment Information (Tables)
12 Months Ended
Dec. 31, 2018
Segment Reporting [Abstract]  
Geographical Segment Revenue

Revenue by geographic area, based upon the “bill-to” location, was as follows:

 

 

 

Year Ended

 

 

Year Ended

 

 

 

December 31,

 

 

December 31,

 

 

 

2018

 

 

2017

 

Domestic

 

$

5,573

 

 

$

5,116

 

International (1)

 

 

15,619

 

 

 

20,097

 

Total

 

$

21,192

 

 

$

25,213

 

 

(1)

Revenue from the Central Banks, consisting of a consortium of central banks around the world, is classified as international revenue. Reporting revenue by country for this customer is not practicable.

Customers Accounted for 10% or More of Revenue

The following customers accounted for 10% or more of revenue:

 

 

 

Year Ended

 

 

Year Ended

 

 

 

December 31,

 

 

December 31,

 

 

 

2018

 

 

2017

 

Central Banks

 

 

65

%

 

 

55

%