Concentration of Risk, Segment and Geographic Information - Revenue by Geographical Region (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Revenues from External Customers
Revenues	$ 4,758	$ 6,027
United States
Revenues from External Customers
Revenues	3,658	4,477
Asia Pacific
Revenues from External Customers
Revenues	$ 1,100	$ 1,550

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