INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Purchased technology, net	$ 235		$ 235		$ 179
Goodwill	185		185		185
Amortization of Intangible Assets	27	$ 27	54	$ 54
Brand name and trademark (life indefinite)
Indefinite-lived Intangible Assets [Line Items]
Brand name and trademark	1,510		1,510		1,510
Purchased technology
Finite-Lived Intangible Assets [Line Items]
Purchased technology	1,623		1,623		1,513
Less: accumulated amortization	(1,388)		(1,388)		(1,334)
Purchased technology, net	$ 235		$ 235		$ 179
Purchased technology | Minimum
Finite-Lived Intangible Assets [Line Items]
Intangible asset, useful life (in years)			5 years
Purchased technology | Maximum
Finite-Lived Intangible Assets [Line Items]
Intangible asset, useful life (in years)			17 years