Segment, Geographic and Product Information - Geographic Information Regarding Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues:
Total revenues	$ 578,614	$ 532,867
U.K.
Revenues:
Total revenues	209,588	191,184
U.S.
Revenues:
Total revenues	182,086	169,337
Asia
Revenues:
Total revenues	73,845	71,371
Other Europe/MEA
Revenues:
Total revenues	67,894	54,889
France
Revenues:
Total revenues	27,258	27,138
Other Americas
Revenues:
Total revenues	$ 17,943	$ 18,948