2. LEASES (Details - Operating lease info) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Right of use operating lease assets	$ 2,805		$ 3,174
Current lease liabilities	1,275		1,261
Non-current lease liabilities	1,568		1,951
Total lease liabilities	2,843		$ 3,212
Components of lease expense
Short term lease expense	45	$ 34
Total lease expense	$ 435	402
Right of use assets obtained in exchange for new operating liabilities
Weighted average remaining lease (years) terms on operating leases	2 years 2 months 16 days		2 years 5 months 5 days
Weighted average discount rates on operating leases	5.374%		5.374%
Cost of Sales [Member]
Components of lease expense
Operating lease expense	$ 317	308
Selling, General and Administrative Expenses [Member]
Components of lease expense
Operating lease expense	$ 73	$ 60