9. INCOME TAXES (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Deferred tax expense	$ 1,900
Federal NOL carryforwards	15,107
State NOL carryforwards	1,049
R&D & other credit carryforwards	501	$ 531
Uncertain tax positions	$ 0
Operating loss expiration date	Dec. 31, 2035