Property and Equipment, Net - Components of Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment	$ 3,272,705	$ 3,209,521
Less accumulated depreciation	(1,611,745)	(1,476,059)
Property and equipment, net	1,660,960	1,733,462
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	286,200	286,200
Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	405,652	403,409
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	737,231	733,258
Rides, Attractions and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	1,547,786	1,527,301
Animals [Member]
Property, Plant and Equipment [Line Items]
Property and equipment	142,307	142,232
Construction in Progress
Property, Plant and Equipment [Line Items]
Property and equipment	$ 153,529	$ 117,121