Leases - Schedule of Cash Flow Information Related to Lease Liabilities (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Lessee, Lease, Description [Line Items]
Cash paid for obligations included in the measurement of operating lease liabilities	$ 8,794	$ 10,936	$ 18,043	$ 20,024
Cash paid for obligations included in the measurement of finance lease liabilities	20	$ 0	20	$ 0
Disposal Group, Held-for-sale, Not Discontinued Operations | Insurance
Lessee, Lease, Description [Line Items]
Cash paid for obligations included in the measurement of operating lease liabilities	$ 1,120		$ 2,279