Short-term Borrowings and Long-term Borrowings (Details - Debt) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Debtor finance	$ 3,677	$ 2,789
Other short-term borrowings	5,111	204
Current portion of long-term borrowings	332	273
Total short-term borrowings and current portion of long-term borrowings	9,120	3,266
Long term bank borrowings	12,366	6,573
Other long-term borrowings	766	55
Total long-term borrowings	13,132	6,628
Less: current portion of long-term borrowings	(332)	(273)
Total long-term borrowings, excluding current portion	12,800	6,355
Total borrowings	$ 21,920	$ 9,621