Segment Information (Tables)

6 Months Ended

Jun. 30, 2019

Segment Reporting [Abstract]

Geographical Segment Revenue

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

	Three		Three		Six		Six
	Months		Months		Months		Months
	Ended		Ended		Ended		Ended
	June 30,		June 30,		June 30,		June 30,
	2019		2018		2019		2018
Domestic	$	1,772	$	1,289	$	3,089	$	2,740
International (1)		4,408		4,149		8,751		8,311
Total	$	6,180	$	5,438	$	11,840	$	11,051

(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:

	Three			Three			Six			Six
	Months			Months			Months			Months
	Ended			Ended			Ended			Ended
	June 30,			June 30,			June 30,			June 30,
	2019			2018			2019			2018
Central Banks		62	%		67	%		65	%		67	%