INCOME TAXES (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
INCOME TAXES [Abstract]
United States federal tax statutory rate	$ 735	$ 225
State taxes, net of federal benefit	(237)	(52)
Valuation allowances against deferred tax assets	(4,798)	(58)
Research and development tax credits	22	(252)
Foreign provision different than U.S. tax rate	(11)	22
Stock option expense	6	14
Adjustment of prior year tax credits and refunds	1,231	174
Change in deferred tax rate from 35% to 21%	3,146	0
Other	(9)	(98)
Total income tax expense (benefit)	$ 85	$ (25)