Impacts On Our Business Due To The Covid-19 Pandemic, The 2023 Hollywood Strikes, The Dramatic Interest Rate Rise And Increased Operating Costs, Together With Our Company’s Resources (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)	Mar. 31, 2024 AUD ($)	Dec. 31, 2023 USD ($)	Jul. 31, 2023	Mar. 31, 2023 USD ($)	Mar. 31, 2022
Impact Of Covid [Line Items]
Federal funds interest rate increased				5.50%		0.25%
Borrowings due	$ 194,544,000		$ 208,847,000
Debt current	41,900,000
Cash and cash equivalents	7,501,000		12,906,000		$ 14,628,000
Working capital	(114,600,000)
Impairment charges against sites	0
Union Square Construction Financing [Member]
Impact Of Covid [Line Items]
Borrowings due	47,087,000		46,925,000
Minetta And Orpheum Theatres Loan [Member]
Impact Of Covid [Line Items]
Borrowings due	7,984,000		8,000,000
Debt current			8,000,000.0
US Cinema 1, 2, 3 Term Loan [Member]
Impact Of Covid [Line Items]
Borrowings due	20,739,000		20,780,000
Debt current	20,900,000
Westpac Bank Corporate Credit Facility [Member]
Impact Of Covid [Line Items]
Borrowings due	8,286,000		8,775,000
Debt current			$ 8,300,000
NAB Corporate Loan Facility [Member]
Impact Of Covid [Line Items]
Borrowings due	$ 65,200,000
Bridge loan		$ 20.0