INCOME TAXES (Details - Deferred tax assets) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Net operating loss carryforwards	$ 5,748	$ 5,191
R&D and other credit carryforwards	637	638
Share-based compensation	803	784
Intangible amortization	0	1
Allowance for bad debt	0	115
Right-of-use operating asset	172	0
Deferred Income Taxes and Other Assets, Noncurrent	(12)	(51)
Deferred Income Taxes and Other Assets, Noncurrent	12	51
Total deferred tax assets	7,348	6,780
Less: valuation allowance	(7,235)	(6,628)
Net deferred tax assets	113	152
Deferred tax liabilities:
Depreciation on property and equipment	(113)	(152)
Total deferred tax liabilities	(113)	(152)
Net deferred tax position	$ 0	$ 0