REVENUE FROM CONTRACTS WITH CUSTOMERS (Details - Contract balances) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Costs incurred on uncompleted contracts	$ 96	$ 1,312
Estimated earnings on uncompleted contracts	86	1,485
Gross costs and estimated earnings	182	2,797
Less: Billings to date on uncompleted contracts	359	2,695
Costs incurred plus estimated earning less billings on uncompleted contracts, net	(177)	102
Included in the accompanying unaudited condensed consolidated balance sheets under the following captions:
Contract assets	0	352
Contract liabilities	(177)	(250)
Costs incurred plus estimated earning less billings on uncompleted contract	$ (177)	$ 102