Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments	2
Revenue	$ 2,752	$ 2,979
Gross profit	2,136	2,273
Amortization of intangible assets	200	187
Intangible assets	2,979	3,097
Intersection [Member]
Segment Reporting Information [Line Items]
Revenue	1,982	1,892
Gross profit	1,769	1,724
Amortization of intangible assets	105	92
Intangible assets	1,671	1,407
Highway [Member]
Segment Reporting Information [Line Items]
Revenue	770	1,087
Gross profit	367	549
Amortization of intangible assets	95	95
Intangible assets	$ 1,308	$ 1,690