Segment Reporting (Summary Of Results Of Operations For Principal Business Segment) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2025 USD ($) segment	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 202,988	$ 210,527	$ 222,744
Depreciation and amortization	(13,198)	(15,779)	(18,422)
General and administrative expense	(19,306)	(20,161)	(20,172)
Total costs and expenses	(208,295)	(224,560)	(234,775)
Segment operating income (loss)	$ (5,307)	(14,033)	(12,031)
Number of operating segments | segment	2
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 207,024	215,136	227,511
Operating expense	(179,827)	(193,229)	(200,948)
Depreciation and amortization	(12,771)	(15,392)	(17,711)
General and administrative expense	(4,866)	(4,633)	(4,937)
Total costs and expenses	(197,464)	(213,254)	(223,596)
Segment operating income (loss)	9,560	1,882	3,915
Inter-segment Elimination [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	(4,036)	(4,609)	(4,767)
Operating expense	(4,036)	(4,609)	(4,767)
Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	188,603	195,130	207,641
Operating expense	(172,364)	(183,986)	(192,185)
Depreciation and amortization	(8,457)	(10,232)	(11,335)
General and administrative expense	(4,139)	(3,709)	(3,997)
Total costs and expenses	(184,960)	(197,927)	(207,517)
Segment operating income (loss)	3,643	(2,797)	124
Cinema Exhibition [Member] | Inter-segment Elimination [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(4,036)	(4,609)	(4,767)
Real Estate [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	18,421	20,006	19,870
Operating expense	(7,463)	(9,243)	(8,763)
Depreciation and amortization	(4,314)	(5,160)	(6,376)
General and administrative expense	(727)	(924)	(940)
Total costs and expenses	(12,504)	(15,327)	(16,079)
Segment operating income (loss)	5,917	4,679	3,791
Real Estate [Member] | Inter-segment Elimination [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	(4,036)	(4,609)	(4,767)
Third Party [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	202,988	210,527	222,744
Operating expense	(175,791)	(188,620)	(196,181)
Third Party [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	188,603	195,130	207,641
Operating expense	(168,328)	(179,377)	(187,418)
Third Party [Member] | Real Estate [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	14,385	15,397	15,103
Operating expense	$ (7,463)	$ (9,243)	$ (8,763)