Property and Equipment by Geographic Area (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Total property and equipment, net	$ 83,636	$ 61,655
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total property and equipment, net	59,473	46,605
India
Revenues from External Customers and Long-Lived Assets [Line Items]
Total property and equipment, net	5,660	4,176
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Total property and equipment, net	4,237	2,158
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Total property and equipment, net	4,194	1,238
Other EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Total property and equipment, net	5,532	3,724
Other international
Revenues from External Customers and Long-Lived Assets [Line Items]
Total property and equipment, net	$ 4,540	$ 3,754