Segment Information (Tables)

3 Months Ended

Mar. 31, 2019

Segment Information [Abstract]

Schedule of financial information by reportable segment

The following table sets forth selected unaudited financial information for each of our reportable segments (in thousands):

	Three Months Ended March 31,
	Intersection				Highway				Total
	2019		2018		2019		2018		2019		2018
Revenue	$	2,072	$	2,417	$	1,300	$	593	$	3,372	$	3,010
Gross profit		1,792		2,186		803		377		2,595		2,563
Amortization of intangible assets		92		92		58		19		150		111
Intangible assets		2,018		2,385		1,568		1,055		3,586		3,440