Prepaid Expenses and Other Assets (Details - Prepaid Expenses) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Prepaid Expenses And Other Assets
Prepaid insurance	$ 107	$ 105
Prepaid licenses	98	80
Employee retention credit receivable	1,363	0
Prepaid other	309	171
Total prepaid expenses and other assets	$ 1,877	$ 356