Borrowings (Summary Of Borrowings) (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Contractual Facility	$ 185,916,000	$ 187,450,000
Balance Gross	183,057,000	185,091,000
Balance Net	176,515,000	177,966,000
Deferred financing costs, net	$ 706,000	$ 1,100,000
Trust Preferred Securities [Member]
Debt Instrument [Line Items]
Maturity Date	Apr. 30, 2027	Apr. 30, 2027
Contractual Facility	$ 27,913,000	$ 27,913,000
Balance Gross	27,913,000	27,913,000
Balance Net	$ 27,728,000	$ 27,617,000
Stated Interest Rate	7.93%	8.10%
Effective interest rate	7.93%	8.10%
Bank Of America Credit Facility [Member]
Debt Instrument [Line Items]
Maturity Date	Dec. 21, 2026	Sep. 18, 2026
Contractual Facility	$ 5,425,000	$ 6,200,000
Balance Gross	5,425,000	6,200,000
Balance Net	$ 5,421,000	$ 6,200,000
Stated Interest Rate	11.75%	10.75%
Effective interest rate	11.75%	10.75%
US Cinema 1, 2, 3 Term Loan [Member]
Debt Instrument [Line Items]
Maturity Date	Oct. 01, 2026	Oct. 01, 2026
Contractual Facility	$ 19,665,000	$ 19,841,000
Balance Gross	19,665,000	19,841,000
Balance Net	$ 19,638,000	$ 19,766,000
Stated Interest Rate	9.46%	9.46%
Effective interest rate	9.46%	9.46%
Minetta And Orpheum Theatres Loan [Member]
Debt Instrument [Line Items]
Maturity Date	Jun. 01, 2026	Jun. 01, 2026
Contractual Facility	$ 6,234,000	$ 6,829,000
Balance Gross	6,234,000	6,829,000
Balance Net	$ 6,194,000	$ 6,819,000
Stated Interest Rate	7.00%	7.00%
Effective interest rate	7.00%	7.00%
Union Square Construction Financing [Member]
Debt Instrument [Line Items]
Maturity Date	Nov. 06, 2026	Nov. 06, 2026
Contractual Facility	$ 49,000,000	$ 49,000,000
Balance Gross	46,141,000	46,641,000
Balance Net	$ 45,958,000	$ 46,184,000
Stated Interest Rate	10.84%	10.87%
Effective interest rate	10.84%	10.87%
Nationwide Theaters Corp [Member]
Debt Instrument [Line Items]
Maturity Date	Sep. 30, 2035	Sep. 30, 2035
Contractual Facility	$ 13,648,000	$ 13,648,000
Balance Gross	13,648,000	13,648,000
Balance Net	$ 7,810,000	$ 7,648,000
Stated Interest Rate	4.75%	4.75%
Effective interest rate	12.66%	12.66%
Debt, net of debt discounts	$ 5,800,000	$ 6,000,000.0
NAB Australian Corporate Term Loan [Member]
Debt Instrument [Line Items]
Maturity Date	Jul. 31, 2030	Jul. 31, 2030
Contractual Facility	$ 64,031,000	$ 64,019,000
Balance Gross	64,031,000	64,019,000
Balance Net	$ 63,766,000	$ 63,732,000
Stated Interest Rate	6.00%	5.25%
Effective interest rate	6.00%	5.25%