Segment Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments			2
Revenue	$ 3,155	$ 3,272	$ 8,726	$ 10,039
Gross profit	2,597	2,687	6,728	7,921
Amortization of intangible assets	198	200	602	579
Intangible assets	2,798	2,759	2,798	2,759
Intersection [Member]
Segment Reporting Information [Line Items]
Revenue	2,660	2,677	6,098	7,206
Gross profit	2,487	2,456	5,564	6,617
Amortization of intangible assets	105	105	345	293
Intangible assets	1,652	1,260	1,652	1,260
Highway [Member]
Segment Reporting Information [Line Items]
Revenue	495	595	2,628	2,833
Gross profit	110	231	1,164	1,304
Amortization of intangible assets	93	95	258	286
Intangible assets	$ 1,146	$ 1,499	$ 1,146	$ 1,499