2. LEASES (Details - Operating lease info) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Right of use operating lease assets	$ 3,742		$ 3,742		$ 4,334
Current lease liabilities	1,213		1,213		1,181
Non-current lease liabilities	2,561		2,561		3,180
Total lease liabilities	3,774		3,774		$ 4,361
Components of lease expense
Short term lease expense	53	$ 172	87	$ 237
Total lease expense	$ 147	544	$ 549	981
Weighted average remaining lease (years) terms on operating leases	2 years 10 months 25 days		2 years 10 months 25 days		3 years 3 months 11 days
Weighted average discount rates on operating leases	5.374%		5.374%		5.374%
Cost of Sales [Member]
Components of lease expense
Operating lease expense	$ 80	308	$ 388	614
Selling, General and Administrative Expenses [Member]
Components of lease expense
Operating lease expense	$ 14	$ 64	$ 74	$ 130