Segment Reporting (Summary Of Results Of Operations For Principal Business Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 66,896	$ 60,378	$ 112,020	$ 100,547
Depreciation and amortization	(3,171)	(3,380)	(6,401)	(6,756)
General and administrative expense	(4,402)	(5,384)	(9,148)	(10,537)
Total costs and expenses	(59,419)	(57,487)	(108,174)	(104,548)
Segment operating income (loss)	7,477	2,891	3,846	(4,001)
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	67,843	61,435	113,900	102,684
Operating expense	(52,793)	(49,780)	(94,505)	(89,392)
Depreciation and amortization	(3,089)	(3,297)	(6,224)	(6,538)
General and administrative expense	(1,225)	(1,426)	(2,387)	(2,701)
Total costs and expenses	(57,107)	(54,503)	(103,116)	(98,631)
Segment operating income (loss)	10,736	6,932	10,784	4,053
Inter-segment Elimination [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	(947)	(1,057)	(1,880)	(2,137)
Operating expense	(947)	(1,057)	(1,880)	(2,137)
Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	62,990	56,782	104,451	93,186
Operating expense	(50,857)	(47,940)	(90,683)	(85,597)
Depreciation and amortization	(1,953)	(2,172)	(3,946)	(4,312)
General and administrative expense	(1,022)	(1,217)	(2,005)	(2,298)
Total costs and expenses	(53,832)	(51,329)	(96,634)	(92,207)
Segment operating income (loss)	9,158	5,453	7,817	979
Cinema Exhibition [Member] | Inter-segment Elimination [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(947)	(1,057)	(1,880)	(2,137)
Real Estate [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	4,853	4,653	9,449	9,498
Operating expense	(1,936)	(1,840)	(3,822)	(3,795)
Depreciation and amortization	(1,136)	(1,125)	(2,278)	(2,226)
General and administrative expense	(203)	(209)	(382)	(403)
Total costs and expenses	(3,275)	(3,174)	(6,482)	(6,424)
Segment operating income (loss)	1,578	1,479	2,967	3,074
Real Estate [Member] | Inter-segment Elimination [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	(947)	(1,057)	(1,880)	(2,137)
Third Party [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	66,896	60,378	112,020	100,547
Operating expense	(51,846)	(48,723)	(92,625)	(87,255)
Third Party [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	62,990	56,782	104,451	93,186
Operating expense	(49,910)	(46,883)	(88,803)	(83,460)
Third Party [Member] | Real Estate [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	3,906	3,596	7,569	7,361
Operating expense	$ (1,936)	$ (1,840)	$ (3,822)	$ (3,795)