10. INCOME TAXES (Details - Deferred tax assets) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Allowance for doubtful accounts	$ 61	$ 172
Net operating loss	5,300	4,814
Share-based compensation	1,206	1,071
Investment in joint venture	3,972	4,063
Other	651	579
Total deferred tax assets	11,190	10,699
Deferred tax liabilities:
Depreciation and amortization on property, plant and equipment	(1,656)	(1,797)
Amortization of intangibles	70	58
Total deferred tax liabilities	(1,586)	(1,739)
Less: valuation allowance	(9,604)	(8,960)
Net deferred tax position	$ 0	$ 0