Description of the Business and Basis of Presentation - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($) Business	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) Business Segment	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Business Description And Basis Of Presentation [Line Items]
Number of theme parks owned and operated | Business	12		12
Number of theme parks opened for a portion of the year | Business			7
Number of reportable segment | Segment			1
Long term deferred revenue	$ 14,505,000		$ 14,505,000		$ 10,000,000
Revenue	18,026,000	$ 405,992,000	171,587,000	$ 626,567,000
Impairment of goodwill and other indefinite-lived intangible assets			0
Impairment of other long-lived assets			0
ZHG Stock Purchase Agreement [Member]
Business Description And Basis Of Presentation [Line Items]
Type of Revenue [Extensible List]		seas:FoodMerchandiseAndOtherRevenueMember		seas:FoodMerchandiseAndOtherRevenueMember
Revenue		$ 0		$ 1,700,000
Other Liabilities [Member]
Business Description And Basis Of Presentation [Line Items]
Long term deferred revenue					10,000,000.0
Middle East Project [Member]
Business Description And Basis Of Presentation [Line Items]
Long term deferred revenue	10,300,000		10,300,000		10,000,000.0
Deferred costs incurred under Middle East Project	5,500,000		5,500,000		$ 5,000,000.0
Pass Products, Admission or In-Park Products or Services [Member]
Business Description And Basis Of Presentation [Line Items]
Long term deferred revenue	$ 4,200,000		$ 4,200,000