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General - Additional information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 26, 2019
Sep. 27, 2018
Sep. 26, 2019
Sep. 27, 2018
Dec. 27, 2018
Summary of Significant Accounting Policies [Line Items]          
Depreciation $ 19,194,000 $ 14,556,000 $ 53,433,000 $ 43,037,000  
Percentage Of Cash Dividends     110.00%    
Deferred Revenue 32,499,000   $ 32,499,000   $ 37,048,000
Deferred Revenue, Revenue Recognized 4,042,000   18,747,000    
Remaining Performance Obligation Related to Advanced Ticket Sales 4,680,000   4,680,000    
Other Deferred Compensation Arrangements, Liability, Classified, Noncurrent 47,767,000   $ 47,767,000   56,908,000
Redeemed Revenue From Advanced Tickets Sales Occurred     2 years    
Hotels or Resorts [Member] | Other Accrued Liabilities [Member]          
Summary of Significant Accounting Policies [Line Items]          
Remaining Performance Obligation Related to Hotels Gift Cards 2,276,000   $ 2,276,000    
Fair Value, Inputs, Level 1 [Member]          
Summary of Significant Accounting Policies [Line Items]          
Trading Securities, Fair Value Disclosure 7,017,000   7,017,000   5,302,000
Fair Value, Inputs, Level 2 [Member]          
Summary of Significant Accounting Policies [Line Items]          
Interest Rate Fair Value Hedge Liability at Fair Value $ 1,441,000   $ 1,441,000   $ 205,000