Segment, Geographic and Product Information - Geographic Information Regarding Revenues (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenues:
Total revenues	$ 532,867	$ 506,464
U.K.
Revenues:
Total revenues	191,184	180,880
U.S.
Revenues:
Total revenues	169,337	148,820
Asia
Revenues:
Total revenues	71,371	77,049
Other Europe/MEA
Revenues:
Total revenues	54,889	53,105
France
Revenues:
Total revenues	27,138	30,262
Other Americas
Revenues:
Total revenues	$ 18,948	$ 16,348