Segment Information And Information About Geographic Areas - Schedule of Software, Equipment and Property, Net by Geographic Area (Detail) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Revenues from External Customers and Long-Lived Assets [Line Items]
Net software, equipment, and property	$ 167,960	$ 172,079
United States [Member] | Property Plant And Equipment Net [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	167,799	171,864
China [Member] | Property Plant And Equipment Net [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 161	$ 215