Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 69,779	$ 40,698	$ 31,944
Revenue from contract with customer benchmark | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue (as percent)	100.00%	100.00%	100.00%
Revenue from contract with customer benchmark | Revenue Recognition Timing Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue (as percent)	100.00%	100.00%	100.00%
Revenue from contract with customer benchmark | Segment Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue (as percent)	100.00%	100.00%	100.00%
Autonomy Solutions
Disaggregation of Revenue [Line Items]
Revenue	$ 48,835	$ 24,353	$ 28,497
Autonomy Solutions | Revenue from contract with customer benchmark | Segment Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue (as percent)	70.00%	60.00%	89.00%
ATS
Disaggregation of Revenue [Line Items]
Revenue	$ 20,944	$ 16,345	$ 3,447
ATS | Revenue from contract with customer benchmark | Segment Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue (as percent)	30.00%	40.00%	11.00%
Recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenue	$ 45,049	$ 17,595	$ 8,892
Recognized at a point in time | Revenue from contract with customer benchmark | Revenue Recognition Timing Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue (as percent)	65.00%	43.00%	28.00%
Recognized over time
Disaggregation of Revenue [Line Items]
Revenue	$ 24,730	$ 23,103	$ 23,052
Recognized over time | Revenue from contract with customer benchmark | Revenue Recognition Timing Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue (as percent)	35.00%	57.00%	72.00%
North America
Disaggregation of Revenue [Line Items]
Revenue	$ 64,083	$ 35,032	$ 23,043
North America | Revenue from contract with customer benchmark | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue (as percent)	92.00%	86.00%	72.00%
Asia Pacific
Disaggregation of Revenue [Line Items]
Revenue	$ 1,178	$ 3,703	$ 2,502
Asia Pacific | Revenue from contract with customer benchmark | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue (as percent)	2.00%	9.00%	8.00%
Europe and Middle East
Disaggregation of Revenue [Line Items]
Revenue	$ 4,518	$ 1,963	$ 6,399
Europe and Middle East | Revenue from contract with customer benchmark | Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of revenue (as percent)	6.00%	5.00%	20.00%