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General (Details Textual) - USD ($)	3 Months Ended
	Mar. 28, 2019	Mar. 29, 2018	Dec. 27, 2018
Summary of Significant Accounting Policies [Line Items]
Depreciation	$ 15,955,000	$ 14,036,000
Percentage Of Cash Dividends	110.00%
Deferred Revenue	$ 36,562,000		$ 37,048,000
Deferred Revenue, Revenue Recognized	10,183,000
Revenue, Remaining Performance Obligation, Amount	4,823,000
Other Deferred Compensation Arrangements, Liability, Classified, Noncurrent	$ 46,741,000		56,908,000
Redeemed Revenue From Advanced Tickets Sales Occured	2 years
Hotels or Resorts [Member]
Summary of Significant Accounting Policies [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 192,000
Contract Revenue Reclassified From Deferred Revenue	2,342,000
Revenue Performance Obligation [Member]
Summary of Significant Accounting Policies [Line Items]
Other Deferred Compensation Arrangements, Liability, Classified, Noncurrent	71,000
Fair Value, Inputs, Level 1 [Member]
Summary of Significant Accounting Policies [Line Items]
Trading Securities, Fair Value Disclosure	5,697,000		5,302,000
Fair Value, Inputs, Level 2 [Member]
Summary of Significant Accounting Policies [Line Items]
Interest Rate Fair Value Hedge Asset at Fair Value	$ 719,000		$ 205,000

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