Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 9,377	$ 9,355
Accumulated Amortization	(5,655)	(5,480)
Net Carrying Value	$ 3,722	$ 3,875
Weighted Average Useful Life	7 years 3 months 18 days	7 years 1 month 6 days
Developed technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 3,900	$ 3,900
Accumulated Amortization	(3,900)	(3,900)
Net Carrying Value	0	0
Vision development costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,929	2,929
Accumulated Amortization	(1,278)	(1,186)
Net Carrying Value	$ 1,651	$ 1,743
Weighted Average Useful Life	8 years	8 years
Echo development costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,852
Accumulated Amortization	(44)
Net Carrying Value	$ 1,808
Weighted Average Useful Life	7 years
Software development in process costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		$ 1,830
Accumulated Amortization		0
Net Carrying Value		1,830
IntellitraffiQ Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 468	468
Accumulated Amortization	(205)	(176)
Net Carrying Value	$ 263	$ 292
Weighted Average Useful Life	4 years	4 years
Wrong Way Development Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 228	$ 228
Accumulated Amortization	(228)	(218)
Net Carrying Value	$ 0	$ 10
Weighted Average Useful Life		2 years