Leases - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019	Feb. 28, 2016
Total lease expense	$ 35,600
Variable lease costs	11,100
Lease right-of-use assets	57,539	$ 50,100	$ 50,100
Operating Lease, Liability	$ 65,325	$ 54,300	$ 54,300
Operating Lease, Weighted Average Remaining Lease Term	4 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent	5.00%
Short-term Lease, Cost	$ 2,600