Leases - Maturities of Lease Liabilities (Detail) $ in Thousands	Sep. 30, 2019 USD ($)
Operating Lease Liabilities, Payments, Due, Rolling Maturity [Abstract]
2019	$ 19,112
2020	77,416
2021	67,505
2022	61,044
2023	52,427
Thereafter	174,492
Total minimum lease payments	451,996
Less imputed interest	76,574
Operating Lease, Liability	$ 375,422