Description of a specific restructuring plan and related activities including the facts and circumstances leading to the restructuring or decision to exit an activity, and the expected completion date. This concept and related items would be utilized for each plan if multiple exit plans have been implemented in the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(a))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Name:	us-gaap_RestructuringAndRelatedActivitiesDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Severance and Other Separation Costs - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Restructuring Cost And Reserve [Line Items]
Severance and other separation costs		$ 1.6
2020 Restructuring Program [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring costs, description		In September 2020, the Company committed to a plan of termination (the “2020 Restructuring Program”) primarily impacting some of the Company’s previously furloughed salaried, full-time and part-time employees. Substantially all of the impacted employees were furloughed as part of the Company’s efforts to reduce operating expenses and adjust cash flows in light of business circumstances associated with the COVID-19 pandemic. Due to the sudden and unforeseeable economic impacts of the pandemic on the Company’s business operations, that were not reasonably foreseeable at the time of the temporary furloughs, the Company transitioned certain park and corporate personnel from a furloughed status to a permanent layoff. As a result, during the three and nine months ended September 30, 2020, the Company recorded approximately $2.5 million in pre-tax restructuring charges primarily related to severance and other termination benefits related to the 2020 Restructuring Program, which is included in severance and other separation costs in the accompanying unaudited condensed consolidated statements of comprehensive income (loss)
Severance and other separation costs	$ 2.5		$ 2.5