Segment Reporting (Summary Of Results Of Operations For Principal Business Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 60,378	$ 46,809	$ 100,547	$ 91,861
Depreciation and amortization	(3,380)	(4,011)	(6,756)	(8,216)
General and administrative expense	(5,384)	(5,271)	(10,537)	(10,693)
Total costs and expenses	(57,487)	(54,501)	(104,548)	(107,083)
Segment operating income (loss)	2,891	(7,692)	(4,001)	(15,222)
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	61,435	47,954	102,684	94,159
Costs and expenses	(49,780)	(46,364)	(89,392)	(90,471)
Depreciation and amortization	(3,297)	(3,912)	(6,538)	(8,015)
General and administrative expense	(1,426)	(1,341)	(2,701)	(2,611)
Total costs and expenses	(54,503)	(51,617)	(98,631)	(101,097)
Segment operating income (loss)	6,932	(3,663)	4,053	(6,938)
Inter-segment Elimination [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	(1,057)	(1,146)	(2,137)	(2,298)
Costs and expenses	(1,057)	(1,146)	(2,137)	(2,298)
Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	56,782	42,941	93,186	84,213
Costs and expenses	(47,940)	(43,903)	(85,597)	(85,775)
Depreciation and amortization	(2,172)	(2,554)	(4,312)	(5,141)
General and administrative expense	(1,217)	(1,093)	(2,298)	(2,072)
Total costs and expenses	(51,329)	(47,550)	(92,207)	(92,988)
Segment operating income (loss)	5,453	(4,609)	979	(8,775)
Cinema Exhibition [Member] | Inter-segment Elimination [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Costs and expenses	(1,057)	(1,146)	(2,137)	(2,298)
Real Estate [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	4,653	5,013	9,498	9,946
Costs and expenses	(1,840)	(2,461)	(3,795)	(4,696)
Depreciation and amortization	(1,125)	(1,358)	(2,226)	(2,874)
General and administrative expense	(209)	(248)	(403)	(539)
Total costs and expenses	(3,174)	(4,067)	(6,424)	(8,109)
Segment operating income (loss)	1,479	946	3,074	1,837
Real Estate [Member] | Inter-segment Elimination [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	(1,057)	(1,146)	(2,137)	(2,298)
Third Party [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	60,378	46,808	100,547	91,861
Costs and expenses	(48,723)	(45,218)	(87,255)	(88,173)
Third Party [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	56,782	42,941	93,186	84,213
Costs and expenses	(46,883)	(42,757)	(83,460)	(83,477)
Third Party [Member] | Real Estate [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	3,596	3,867	7,361	7,648
Costs and expenses	$ (1,840)	$ (2,461)	$ (3,795)	$ (4,696)