Leases - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease cost	$ 189,924	$ 204,466
Variable lease cost	27,443	30,817
Operating lease liabilities	140,699	197,574
Right of use assets in exchange for operating lease liabilities	$ 70,460	$ 195,687
Weighted average remaining lease term	6 years	8 years
Weighted average discount rate	8.60%	6.70%