INCOME TAXES (Details - Valuation Allowance) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Operating Loss Carryforwards, Valuation Allowance	$ 2,700	$ 2,100
Valuation Allowance [Abstract]
Balance, beginning of the period	2,101	2,341	$ 40,121
Change in valuation allowance	593	(240)	(37,780)
Balance, end of the period	$ 2,694	$ 2,101	$ 2,341