REVENUE FROM CONTRACTS WITH CUSTOMERS (Details - Contract balances) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Costs incurred on uncompleted contracts	$ 342	$ 1,312
Estimated earnings on uncompleted contracts	465	1,485
Gross costs and estimated earnings	807	2,797
Less: Billings to date on uncompleted contracts	(859)	(2,695)
Costs incurred plus estimated earning less billings on uncompleted contracts, net	(52)	102
Included in the accompanying consolidated balance sheets under the following captions:
Contract assets	281	352
Contract liabilities	(333)	(250)
Costs incurred plus estimated earning less billings on uncompleted contracts	$ (52)	$ 102