Prepaid Expenses and Other Assets (Details - Prepaid Expenses) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Prepaid Expenses And Other Assets
Contract assets	$ 304	$ 0
Prepaid insurance	143	107
Prepaid licenses	14	98
Employee retention credit receivable	0	1,363
Prepaid other	174	309
Total prepaid expenses and other assets	$ 635	$ 1,877