Revenue (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following table sets forth our net revenues by category:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Net Revenues
Platform subscriptions and services	$	1,771	$	2,860	$	4,472	$	7,274
Application transaction	389		270		770		709
Net revenues	$	2,160	$	3,130	$	5,242	$	7,983

Schedules of Concentration Risk

The following table sets forth our concentration of accounts receivable, net of specific allowances for doubtful accounts.

	September 30, 2021		December 31, 2020
Customer A	47	%	—	%
Customer B	8	%	16	%
Customer C	3	%	55	%
Customer D	—	%	13	%

The following table sets forth our concentration of revenue sources as a percentage of total net revenues.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Customer A	35	%	—	%	15	%	—	%
Customer E	8	%	9	%	14	%	11	%
Customer F	—	%	26	%	—	%	30	%
Customer G	—	%	21	%	—	%	8	%

Deferred Revenue

Our deferred revenue balance consisted of the following:

	September 30, 2021		December 31, 2020
Current deferred revenue
Platform subscriptions and services revenue	$	1,734	$	2,317
Application transaction revenue	81		80
Total current deferred revenue	$	1,815	$	2,397
Non-current deferred revenue
Platform subscriptions and services revenue	$	1,262	$	2,678
Total non-current deferred revenue	$	1,262	$	2,678
Total deferred revenue	$	3,077	$	5,075