Leases - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2014
Leases [Line Items]
Total operating lease liabilities	$ 29,970
Option to extend, lease term	10 years
Total lease cost	$ 7,900	$ 7,900	$ 8,400
Operating lease costs	7,500	7,500	8,000
Short-term lease costs	400	$ 400	$ 400
India
Leases [Line Items]
Total operating lease liabilities	$ 30,000
Atlanta
Leases [Line Items]
Operating lease term extended date, month and year					2025-09
Leasehold improvement reimbursement received				$ 1,300