9. INCOME TAXES (Details - Deferred tax assets) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets:
Net operating loss ("NOL") carryforwards	$ 3,255	$ 5,439
R&D & other credit carryforwards	501	531
Share-based compensation	741	1,137
Intangible amortization	21	68
Allowance for bad debt	2	0
Other	8	43
Total deferred tax assets	4,528	7,218
Less: valuation allowance	(3,649)	(5,499)
Net deferred tax assets	879	1,719
Deferred tax liabilities:
Depreciation on property and equipment	(879)	(1,664)
Amortization of intangibles	0	(55)
Total deferred tax liabilities	(879)	(1,719)
Net deferred tax position	$ 0	$ 0