Schedule of Total Revenue by geographic region (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Total Revenue	$ 3,394	$ 8,344
Total Revenue	100.00%	100.00%
UNITED STATES
Total Revenue	$ 2,537	$ 8,151
Total Revenue	75.00%	98.00%
CHINA
Total Revenue	$ 827	$ 176
Total Revenue	24.00%	2.00%
Other [Member]
Total Revenue	$ 30	$ 17
Total Revenue	1.00%	0.00%

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details