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Long-Lived Assets - Narrative (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 05, 2026
USD ($)
Mar. 29, 2026
USD ($)
Mar. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
May 01, 2025
a
Property, Plant and Equipment [Line Items]          
Estimated increase in depreciation expense       $ 19,000  
Loss on disposal group   $ (27,971) $ 0    
Marketed For Redevelopment | Six Flags American And Hurricane Harbor          
Property, Plant and Equipment [Line Items]          
Area of land (in acres) | a         500
Disposal Group, Held-for-Sale, Not Discontinued Operations | Seven Parks          
Property, Plant and Equipment [Line Items]          
Proceeds from divestiture of businesses $ 331,400        
Disposal group, including discontinued operation, ownership percentage in disposed asset 100.00%        
Loss on disposal group   28,000      
Disposal Group, Held-for-Sale, Not Discontinued Operations | Seven Parks | Secondary Guarantor For Lease          
Property, Plant and Equipment [Line Items]          
Fair value of lease agreement guarantee   $ 13,400