Segment and Geographic Area Information - Summary of Company's Revenues and Long-Lived Assets, Net, by Geographic Area (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 43,273	$ 46,018
Long-Lived Assets, Net	8,177	5,251
Country US [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	42,049	45,270
Long-Lived Assets, Net	8,177	5,251
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,124	648
Long-Lived Assets, Net	0	0
UNITED KINGDOM [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	100	100
Long-Lived Assets, Net	$ 0	$ 0