Leases - Summary of Future Minimum Lease Payments Under Non-cancellable Operating Leases (Detail) $ in Thousands	Sep. 30, 2019 USD ($)
Leases [Abstract]
2019 (excluding the nine months ended September 30, 2019)	$ 7,960
2020	25,273
2021	25,146
2022	18,960
2023	12,504
Thereafter	21,898
Total future minimum lease payments	111,741	[1]
Less: Interest	(12,279)	[2]
Total	99,462
Current operating lease liabilities	22,888
Non-current operating lease liabilities	76,574
Total	$ 99,462

[1] For leases commencing prior to 2019, minimum lease payments exclude payments for real estate taxes and non-lease components.

[2] We used our in-country, currency adjusted incremental borrowing rate for the discount rate for the leases at adoption date, and will use the same approach for all leases commencing thereafter.