INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 7,837	$ 6,785
Accumulated Amortization	(4,352)	(3,990)
Net Carrying Value	$ 3,485	$ 2,795
Weighted Average Useful Life	8 years	8 years
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	2,885
Accumulated Amortization	(452)	(90)
Net Carrying Value	$ 2,477	$ 2,795
Weighted Average Useful Life	8 years	8 years
Software Development [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,008
Accumulated Amortization	0
Net Carrying Value	$ 1,008