Description of the Business and Basis of Presentation - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020 USD ($) Business Segment	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Business Description And Basis Of Presentation [Line Items]
Number of theme parks owned and operated | Business	12
Number of theme parks opened for a portion of the year | Business	7
Number of reportable segment | Segment	1
Long term deferred revenue	$ 13,552,000		$ 10,000,000
Revenue	153,561,000	$ 220,575,000
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
Revenue		$ 1,700,000
Other Liabilities [Member]
Business Description And Basis Of Presentation [Line Items]
Long term deferred revenue			10,000,000.0
Pass Products, Admission or In-Park Products or Services [Member]
Business Description And Basis Of Presentation [Line Items]
Long term deferred revenue	3,600,000
Middle East Project [Member]
Business Description And Basis Of Presentation [Line Items]
Long term deferred revenue	10,000,000.0		10,000,000.0
Deferred costs incurred under Middle East Project	$ 5,300,000		$ 5,000,000.0