Revenue Recognition (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020		Dec. 26, 2019		Dec. 27, 2018
Revenue Recognition
Cost reimbursements	$ 17,202,000		$ 37,158,000		$ 34,285,000
Total revenues	237,688,000		820,863,000		707,120,000
Theatre admissions [Member]
Revenue Recognition
Revenue from Contract with Customer, Including Assessed Tax	64,825,000		284,141,000		246,385,000
Rooms [Member]
Revenue Recognition
Revenue from Contract with Customer, Including Assessed Tax	35,386,000		105,857,000		108,786,000
Theatre concessions [Member]
Revenue Recognition
Revenue from Contract with Customer, Including Assessed Tax	56,711,000		231,237,000		166,564,000
Food and beverage [Member]
Revenue Recognition
Revenue from Contract with Customer, Including Assessed Tax	24,822,000		74,665,000		72,771,000
Other revenues [Member]
Revenue Recognition
Revenue from Contract with Customer, Including Assessed Tax	38,742,000	[1]	87,805,000	[1]	78,329,000
Theatres Segment [Member]
Revenue Recognition
Cost reimbursements	324,000		877,000		1,292,000
Total revenues	132,624,000		557,080,000		446,804,000
Theatres Segment [Member] | Theatre admissions [Member]
Revenue Recognition
Revenue from Contract with Customer, Including Assessed Tax	64,825,000		284,141,000		246,385,000
Theatres Segment [Member] | Theatre concessions [Member]
Revenue Recognition
Revenue from Contract with Customer, Including Assessed Tax	56,711,000		231,237,000		166,564,000
Theatres Segment [Member] | Other revenues [Member]
Revenue Recognition
Revenue from Contract with Customer, Including Assessed Tax	10,764,000	[1]	40,825,000	[1]	32,563,000
Hotels or Resorts [Member]
Revenue Recognition
Cost reimbursements	16,878,000		36,281,000		32,993,000
Total revenues	104,638,000		263,350,000		259,892,000
Hotels or Resorts [Member] | Rooms [Member]
Revenue Recognition
Revenue from Contract with Customer, Including Assessed Tax	35,386,000		105,857,000		108,786,000
Hotels or Resorts [Member] | Food and beverage [Member]
Revenue Recognition
Revenue from Contract with Customer, Including Assessed Tax	24,822,000		74,665,000		72,771,000
Hotels or Resorts [Member] | Other revenues [Member]
Revenue Recognition
Revenue from Contract with Customer, Including Assessed Tax	27,552,000	[1]	46,547,000	[1]	45,342,000
Corporate Segment [Member]
Revenue Recognition
Total revenues	426,000		433,000		424,000
Corporate Segment [Member] | Other revenues [Member]
Revenue Recognition
Revenue from Contract with Customer, Including Assessed Tax	$ 426,000	[1]	$ 433,000	[1]	$ 424,000

[1] Included in other revenues is an immaterial amount related to rental income that is not considered contract revenue from contracts with customers under ASU No. 2014-09.