Revenue (Tables)

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following is a summary of revenue by geographic location for the three months ended March 31, 2022 and 2021 (in thousands):

	Three Months Ended March 31,
	2022		2021
United States	$	2,612	$	1,475
Rest of world		52		111
Total	$	2,664	$	1,586

Schedule of Changes in Company's Contract Assets and Liabilities

The following table presents changes in our contract assets and liabilities during the three months ended March 31, 2022 (in thousands):

	Balance as of December 31, 2021		Additions		Deductions			Balance as of March 31, 2022
Accounts receivable	$	1,153	$	1,971	$	(2,750	)	$	374
Contract assets:
Unbilled accounts receivable	$	1,488	$	1,494	$	(1,488	)	$	1,494
Contract liabilities:
Deferred revenue, current and long-term	$	30,735	$	977	$	(1,548	)	$	30,164