Segment Reporting and Significant Customer Information - Long Lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets
Long-lived assets	$ 652	$ 657
United States
Revenues from External Customers and Long-Lived Assets
Long-lived assets	150	274
China (Hong Kong)
Revenues from External Customers and Long-Lived Assets
Long-lived assets	318	196
Rest of the world
Revenues from External Customers and Long-Lived Assets
Long-lived assets	$ 184	$ 187