Revenue (Tables)

12 Months Ended

Dec. 31, 2022

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

Total revenue based on the disaggregation criteria described above, as well as revenue by segment, are as follows (in thousands):

	Year Ended December 31,
	2022				2021				2020
	Revenue		% of Revenue		Revenue		% of Revenue		Revenue		% of Revenue
Revenue by primary geographical market:
North America	$	35,032	86	%	$	23,043	72	%	$	4,010	29	%
Asia Pacific	3,703		9	%	2,502		8	%	906		6	%
Europe and Middle East	1,963		5	%	6,399		20	%	9,035		65	%
Total	40,698		100	%	31,944		100	%	13,951		100	%
Revenue by timing of recognition:
Recognized at a point in time	17,595		43	%	8,892		28	%	2,639		19	%
Recognized over time	23,103		57	%	23,052		72	%	11,312		81	%
Total	40,698		100	%	31,944		100	%	13,951		100	%
Revenue by segment:
Autonomy Solutions	24,353		60	%	28,497		89	%	11,387		82	%
ATS	16,345		40	%	3,447		11	%	2,564		18	%
Total	40,698		100	%	31,944		100	%	13,951		100	%

Schedule of Opening and Closing Balances of Contract Liabilities and Significant Changes in Contract Liabilities

The opening and closing balances of contract assets were as follows (in thousands):

	December 31,
	2022		2021
Contract assets, current	$	15,395	$	9,907
Contract assets, non-current	2,575		—
Ending balance	$	17,970	$	9,907

The significant changes in contract assets balances consisted of the following (in thousands): 

	December 31,
	2022		2021
Beginning balance	$	9,907	$	—
Amounts billed that were included in the contract assets beginning balance	(4,228)		—
Revenue recognized for performance obligations that have been satisfied but for which amounts have not been billed	12,291		9,907
Ending balance	$	17,970	$	9,907

The opening and closing balances of contract liabilities were as follows (in thousands):

	December 31,
	2022		2021
Contract liabilities, current	$	1,993	$	898
Contract liabilities, non-current	1,015		—
Ending balance	$	3,008	$	898

The significant changes in contract liabilities balances consisted of the following (in thousands): 

	December 31,
	2022		2021
Beginning balance	$	898	$	2,284
Revenue recognized that was included in the contract liabilities beginning balance	(489)		(1,792)
Increase due to cash received and not recognized as revenue and billings in excess of revenue recognized during the period	2,599		406
Ending balance	$	3,008	$	898