Business Segment Information (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 27, 2018	Sep. 28, 2017	Sep. 27, 2018	Sep. 28, 2017
Segment Reporting Information [Line Items]
Revenues	[1]	$ 170,599	$ 162,375	$ 532,088	$ 487,971
Operating income (loss)		22,413	21,863	68,536	59,485
Depreciation and amortization		14,569	12,993	42,899	37,544
Theatres [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	95,009	90,273	333,397	296,636
Operating income (loss)		14,457	15,861	66,317	58,576
Depreciation and amortization		9,867	8,399	28,751	24,000
Hotels/Resorts [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	75,492	71,952	198,373	190,903
Operating income (loss)		12,024	9,659	15,737	12,803
Depreciation and amortization		4,616	4,512	13,890	13,270
Corporate Items [Member]
Segment Reporting Information [Line Items]
Revenues	[1]	98	150	318	432
Operating income (loss)		(4,068)	(3,657)	(13,518)	(11,894)
Depreciation and amortization		$ 86	$ 82	$ 258	$ 274

[1] Revenues include cost reimbursements of $9,088 for the 13 weeks ended September 27, 2018 (Theatres - $218, Hotels/Resorts - $8,870); $8,557 for the 13 weeks ended September 28, 2017 (Theatres - $500, Hotels/Resorts - $8,057); $25,776 for the 39 weeks ended September 27, 2018 (Theatres - $1,084, Hotels/Resorts - $24,692); and $23,424 for the 39 weeks ended September 28, 2017 (Theatres - $1,659, Hotels/Resorts - $21,765).