Segment Information (Tables)

9 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Geographical Segment Revenue

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

	Three		Three		Nine		Nine
	Months		Months		Months		Months
	Ended		Ended		Ended		Ended
	September 30,		September 30,		September 30,		September 30,
	2021		2020		2021		2020
Domestic	$	1,678	$	1,836	$	5,040	$	5,451
International (1)		4,739		3,915		14,355		12,986
Total	$	6,417	$	5,751	$	19,395	$	18,437

(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			Nine			Nine
	Months			Months			Months			Months
	Ended			Ended			Ended			Ended
	September 30,			September 30,			September 30,			September 30,
	2021			2020			2021			2020
Central Banks		55	%		60	%		58	%		62	%
Walmart Inc.		13	%		14	%		12	%		13	%