Segments, Geographical Information, Concentrations and Significant Customers - Revenue by geography (Details) - Single reportable segment - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Segments, Geographical Information, Concentrations and Significant Customers
Total revenue	$ 4,400	$ 1,472
Revenue \| Revenue from Rights Concentration Risk \| United States
Segments, Geographical Information, Concentrations and Significant Customers
Total revenue	778	385
Revenue \| Revenue from Rights Concentration Risk \| Europe
Segments, Geographical Information, Concentrations and Significant Customers
Total revenue	592	1,013
Revenue \| Revenue from Rights Concentration Risk \| Asia and other
Segments, Geographical Information, Concentrations and Significant Customers
Total revenue	$ 3,030	$ 74

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

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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