Leases - Maturity of Lease Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 22,610
Lessee, Operating Lease, Liability, Payments, Due Year Two	21,108
Lessee, Operating Lease, Liability, Payments, Due Year Three	19,918
Lessee, Operating Lease, Liability, Payments, Due Year Four	19,192
Lessee, Operating Lease, Liability, Payments, Due Year Five	15,353
Lessee, Operating Lease, Liability, Payments, Due after Year Five	82,234
Lessee, Operating Lease, Liability, Payments, Due	180,415
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(52,372)
Operating lease liabilities	128,043	$ 0
Finance Lease, Liability, Payments, Due Next Twelve Months	618
Finance Lease, Liability, Payments, Due Year Two	618
Finance Lease, Liability, Payments, Due Year Three	0
Finance Lease, Liability, Payments, Due Year Four	0
Finance Lease, Liability, Payments, Due Year Five	0
Finance Lease, Liability, Payments, Due after Year Five	0
Finance Lease, Liability, Payment, Due	1,236
Imputed interest	(58)
Finance Lease, Liability	1,178
Operating Leases, Future Minimum Payments Due, Next Twelve Months		16,516
Operating Leases, Future Minimum Payments, Due in Two Years		23,324
Operating Leases, Future Minimum Payments, Due in Three Years		21,826
Operating Leases, Future Minimum Payments, Due in Four Years		19,807
Operating Leases, Future Minimum Payments, Due in Five Years		19,095
Operating Leases, Future Minimum Payments, Due Thereafter		97,587
Operating Leases, Future Minimum Payments Due		$ 198,155
Lessor, Operating Lease, Payments to be Received, Thereafter	$ 0