Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Jan. 01, 2019
Operating Lease, Right-of-Use Asset	$ 302,000		$ 297,700	$ 170,500
Operating Lease, Liability	331,500		$ 323,700	$ 174,400
Lessee, Operating Lease, Liability, Payments, Due	7,700	$ 6,000
Significant change in expected future minimum lease payments since year end	$ 0