7. INCOME TAXES (Details - Deferred tax assets) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets:
Net operating loss carryforwards	$ 4,245	$ 3,255
R&D & other credit carryforwards	685	501
Share-based compensation	730	741
Intangible amortization	16	21
Allowance for bad debt	2	2
Other	16	8
Total deferred tax assets	5,694	4,528
Less: valuation allowance	(4,837)	(3,649)
Net deferred tax assets	857	879
Deferred tax liabilities:
Depreciation on property and equipment	(857)	(879)
Amortization of intangibles	0	0
Total deferred tax liabilities	(857)	(879)
Net deferred tax position	$ 0	$ 0