Summary of preliminary purchase price allocation to assets acquired and liabilities assumed (Details) $ in Thousands, € in Millions				3 Months Ended		6 Months Ended
		Jan. 31, 2023 USD ($)	Jan. 31, 2023 EUR (€)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jan. 31, 2023 EUR (€)	Dec. 31, 2022 USD ($)
Purchase consideration
Cash in escrow						$ 3,263	$ 0
Bargain purchase gain				$ 0	$ 0	(1,706)	$ 0
Ibeo Automotive Systems GmbH [Member]
Purchase consideration
Cash paid at closing						8,245
Cash in escrow		$ 3,300	€ 3.0			3,263
Holdback amount		2,900	2.7			2,928
Advances to Ibeo		7,100		7,120		7,120		€ 6.6	$ 4,100
Total purchase consideration		$ 21,600	€ 19.9			21,556
Inventory				1,197		1,197
Other current assets				703		703
Operating lease right-of-use asset				234		234
Property and equipment, net				5,330		5,330
Contract liabilities				(1,178)		(1,178)
Operating lease liabilities				(234)		(234)
Deferred tax liabilities				(803)		(803)
Total identifiable net assets				23,262		23,262
Bargain purchase gain	[1]					(1,706)
Ibeo Automotive Systems GmbH [Member] | Developed Technology Rights [Member]
Purchase consideration
Intangible assets amount				17,987		$ 17,987
Intangible assets Weighted Average						13 years
Ibeo Automotive Systems GmbH [Member] | Order Backlog [Member]
Purchase consideration
Intangible assets amount				$ 26		$ 26
Intangible assets Weighted Average						1 year

[1] The bargain purchase gain represents the excess of the fair value of the underlying net assets acquired and liabilities assumed over the purchase consideration and is included in Bargain purchase gain in the Condensed Consolidated Statement of Operations. The bargain purchase gain was attributable to the negotiation process with Ibeo during its insolvency proceedings resulting in cash consideration paid being less than the fair value of the net assets