Leases - Maturities of Lease Liabilities (Detail) $ in Thousands	Jun. 30, 2019 USD ($)
Operating Lease Liabilities, Payments, Due, Rolling Maturity [Abstract]
2019	$ 38,857
2020	74,341
2021	64,607
2022	58,276
2023	49,930
Thereafter	169,715
Total minimum lease payments	455,726
Less imputed interest	78,683
Operating Lease, Liability	$ 377,043