Leases - Summary of Maturity of Lease Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Operating Leases
2019	$ 4,948
2020	24,877
2021	21,846
2022	18,787
2023	15,403
Thereafter	42,380
Total lease payments	128,241
Less: Interest	23,385
Operating lease liability	104,856	$ 77,000
Finance Leases
2019	5,558
2020	22,230
2021	22,756
2022	21,020
2023	15,441
Thereafter	17,034
Total lease payments	104,039
Less: Amounts Representing Interest on Finance Leases	8,779
Present value of lease liabilities	$ 95,260		$ 102,859