Description of the Business and Basis of Presentation - Additional Information (Detail) $ in Thousands		9 Months Ended
	Jan. 01, 2021 Business	Sep. 30, 2021 USD ($) Business Segment	Jun. 30, 2021 Business	Dec. 31, 2020 USD ($)	Aug. 31, 2020 Business	Jun. 30, 2020 Business
Business Description And Basis Of Presentation [Line Items]
Number of theme parks owned and operated | Business		12	12		12	12
Number of theme parks reopened | Business					10	7
Number of theme parks opened for a portion of the year | Business	7
Number of reportable segment | Segment		1
Long term deferred revenue		$ 15,010		$ 13,428
Middle East Project [Member]
Business Description And Basis Of Presentation [Line Items]
Deferred costs incurred under Middle East Project		$ 8,200		5,900
Scheduled completion year of the project		2022
Middle East Project [Member] | Other Liabilities [Member]
Business Description And Basis Of Presentation [Line Items]
Long term deferred revenue		$ 10,000
Deferred revenue		$ 2,500		$ 1,900