Segment Information - Long-Lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 765,395	$ 853,326	$ 657,595
North American Region
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	368,985	440,055	261,504
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	329,300	410,300	243,500
International Region
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 396,410	$ 413,271	$ 396,091