Short-term Borrowings and Long-term Borrowings (Details - Debt) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Disclosure [Abstract]
Debtor finance	$ 4,580	$ 3,677
Other short-term borrowings	5,113	5,111
Current portion of long-term borrowings	371	332
Total short-term borrowings and current portion of long-term borrowings	10,064	9,120
Long-term bank borrowings	6,818	12,366
Other long-term borrowings	150	766
Total long-term borrowings	6,968	13,132
Less: current portion of long-term borrowings	(371)	(332)
Total long-term borrowings, excluding current portion	6,597	12,800
Total borrowings	$ 16,661	$ 21,920