Property And Equipment (Narrative) (Details) $ in Millions, $ in Millions	1 Months Ended		3 Months Ended		6 Months Ended
	Feb. 28, 2026 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)	Dec. 19, 2025 USD ($)	May 31, 2025 USD ($)	May 31, 2025 AUD ($)	Jan. 31, 2025 USD ($)	Jan. 31, 2025 NZD ($)
Property, Plant and Equipment [Line Items]
Depreciation expense for operating property			$ 3,100,000	$ 3,400,000	$ 6,300,000	$ 6,700,000
Sutton Hill Associates [Member]
Property, Plant and Equipment [Line Items]
Long term debt acquired								$ 13,600,000
Short term payables eliminated								$ 7,100,000
Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Cinemas 1,2,3, Manhattan [Member]
Property, Plant and Equipment [Line Items]
Adjustment to sale price	$ 0
Book value	$ 24,000,000.0
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Courtenay Central ETC [Member]
Property, Plant and Equipment [Line Items]
Sale price											$ 21,500,000	$ 38.0
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Cannon Park ETC [Member]
Property, Plant and Equipment [Line Items]
Sale price									$ 20,700,000	$ 32.0
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | 2483 Trenton Avenue Williamsport Pennsylvania [Member] | Land [Member]
Property, Plant and Equipment [Line Items]
Property book value adjustment		$ 0
Nationwide Theaters Corp [Member]
Property, Plant and Equipment [Line Items]
Long term debt at fair value							$ 7,600,000
Interest rate			4.75%		4.75%		4.75%