Segment Information - Long-Lived Assets by Geographic Area (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 263,940	$ 268,176
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	170,598	167,870
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	13,299	13,480
Total Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	183,897	181,350
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	19,981	19,563
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	29,434	34,240
Total EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	49,415	53,803
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	1,038	1,150
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	29,590	31,873
Total Asia & Australia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 30,628	$ 33,023