Income Taxes (Details - Income Tax Reconciliation) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Reconciliation of income tax benefit to statutory rate:
Income benefit at statutory rate	$ (2,917)	$ (3,409)
State income taxes (benefit), net of federal income tax benefit	(109)	(107)
Permanent differences	(427)	89
Change in valuation allowance	(211)	(5,899)
Expiring federal net operating losses	3,341	9,745
Other	323	(419)
Income tax provision	$ 0	$ 0