General (Details Textual) - USD ($)	3 Months Ended
	Mar. 29, 2018	Mar. 30, 2017	Dec. 29, 2017	Dec. 28, 2017
Summary of Significant Accounting Policies [Line Items]
Depreciation	$ 14,036,000	$ 12,172,000
Percentage Of Cash Dividends	110.00%
Interest Rate Fair Value Hedge Liability at Fair Value	$ 197,000
Interest Rate Fair Value Hedge Asset at Fair Value				$ 13,000
Trading Securities, Fair Value Disclosure	4,031,000			$ 4,053,000
Reimbursed Costs	7,772,000	7,502,000
Deferred Revenue	32,913,000		$ 36,007,000
Contract Revenue Reclassified From Deferred Revenue	10,201,000
Revenue, Remaining Performance Obligation	$ 4,817,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year 3 months 18 days
Net Cash Provided by (Used in) Investing Activities	$ (16,149,000)	(21,801,000)
Postemployment Benefits Reclassified Operating Income To Other Expense		$ 428,000
Theatres Segment [Member]
Summary of Significant Accounting Policies [Line Items]
Contract Revenue Reclassified From Deferred Revenue	9,252,000
Hotels or Resorts [Member]
Summary of Significant Accounting Policies [Line Items]
Contract Revenue Reclassified From Deferred Revenue	850,000
Revenue, Remaining Performance Obligation	$ 233,000