Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2018

Intangible Assets [Abstract]

Schedule of intangible assets

Intangible assets consisted of the following (dollars in thousands):            

	September 30, 2018
								Weighted
	Gross					Net		Average
	Carrying		Accumulated			Carrying		Useful Life
	Amount		Amortization			Value		(in Years)
Developed technology	$	3,900	$	(3,900	)	$	—	—
Vision development costs		2,929		(727	)		2,202	8.0
Software development in process costs		446		—			446	—
IntellitraffiQ development costs		468		(29	)		439	4.0
Wrong Way development costs		228		(76	)		152	2.0
Total	$	7,971	$	(4,732	)	$	3,239	7.1

	December 31, 2017
								Weighted
	Gross					Net		Average
	Carrying		Accumulated			Carrying		Useful Life
	Amount		Amortization			Value		(in Years)
Developed technology	$	3,900	$	(3,900	)	$	—	—
Vision development costs		2,929		(452	)		2,477	8.0
Software development in process costs		1,008		—			1,008	—
Total	$	7,837	$	(4,352	)	$	3,485	8.0