Right-of-use Asset and Leasing Liabilities (Details - Income Statement) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating expense:
Amortization expense – Finance ROU	$ 23	$ 11	$ 33	$ 21
Lease expense – Operating ROU	92	82	181	165
Other expense:
Interest expense – Finance ROU	$ 1	$ 0	$ 1	$ 1