Business Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 24, 2020	Sep. 26, 2019	Sep. 24, 2020	Sep. 26, 2019
Segment Reporting Information [Line Items]
Revenues	$ 33,591	$ 211,462	$ 200,984	$ 614,001
Operating income (loss)	(47,987)	22,387	(123,249)	54,812
Depreciation and amortization	18,690	19,226	56,568	53,484
Theatres [Member]
Segment Reporting Information [Line Items]
Revenues	7,354	136,802	118,414	414,074
Operating income (loss)	(37,174)	16,843	(78,788)	57,656
Depreciation and amortization	13,353	13,438	40,245	37,918
Hotels/Resorts [Member]
Segment Reporting Information [Line Items]
Revenues	26,178	74,572	82,253	199,604
Operating income (loss)	(6,925)	10,580	(32,459)	11,443
Depreciation and amortization	5,210	5,451	15,955	15,050
Corporate Items [Member]
Segment Reporting Information [Line Items]
Revenues	59	88	317	323
Operating income (loss)	(3,888)	(5,036)	(12,002)	(14,287)
Depreciation and amortization	$ 127	$ 337	$ 368	$ 516