Goodwill - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Goodwill		$ 917,180
Accumulated impairment losses		(488,834)
Goodwill acquired during the year	$ 188,720	69,923
Measurement period adjustments during the year		0
Foreign currency translation adjustment	2,592	(5,236)
Goodwill [Roll Forward]
Beginning Balance	493,033
Goodwill acquired during the year	188,720	69,923
Measurement period adjustments during the year		0
Foreign currency translation adjustment	2,592	(5,236)
Ending Balance	684,345	493,033
North America
Goodwill [Line Items]
Goodwill		727,013
Accumulated impairment losses		(323,422)
Goodwill acquired during the year	117,022	69,923
Measurement period adjustments during the year		0
Foreign currency translation adjustment	1,338	(2,991)
Goodwill [Roll Forward]
Beginning Balance	470,523
Goodwill acquired during the year	117,022	69,923
Measurement period adjustments during the year		0
Foreign currency translation adjustment	1,338	(2,991)
Ending Balance	588,883	470,523
EMEA
Goodwill [Line Items]
Goodwill		169,174
Accumulated impairment losses		(151,439)
Goodwill acquired during the year	71,698	0
Measurement period adjustments during the year		0
Foreign currency translation adjustment	1,163	(1,748)
Goodwill [Roll Forward]
Beginning Balance	15,987
Goodwill acquired during the year	71,698	0
Measurement period adjustments during the year		0
Foreign currency translation adjustment	1,163	(1,748)
Ending Balance	88,848	15,987
APAC
Goodwill [Line Items]
Goodwill		20,993
Accumulated impairment losses		(13,973)
Goodwill acquired during the year	0	0
Measurement period adjustments during the year		0
Foreign currency translation adjustment	91	(497)
Goodwill [Roll Forward]
Beginning Balance	6,523
Goodwill acquired during the year	0	0
Measurement period adjustments during the year		0
Foreign currency translation adjustment	91	(497)
Ending Balance	$ 6,614	$ 6,523