Segment Reporting (Summary Of Cinema Exhibition Segment Revenue To Segment Operating Income) (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)
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)
Operating income (loss)	10,736	6,932	10,784	4,053
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)
Depreciation, amortization, general and administrative expense	(2,975)	(3,389)	(5,951)	(6,610)
Operating income (loss)	9,158	5,453	7,817	979
Cinema Exhibition [Member] | United States [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	29,478	30,258	48,941	48,553
Occupancy expense	(3,968)	(4,420)	(7,996)	(8,387)
Labor cost	(4,343)	(4,212)	(8,003)	(8,293)
Utilities	(1,445)	(1,332)	(2,648)	(2,551)
Cleaning and maintenance	(1,509)	(1,754)	(2,797)	(3,295)
Other operating expenses	(1,906)	(2,321)	(3,865)	(4,468)
Operating expense	(24,723)	(26,078)	(44,127)	(45,674)
Depreciation and amortization	(944)	(1,157)	(1,912)	(2,278)
General and administrative expense	(606)	(731)	(1,253)	(1,456)
Depreciation, amortization, general and administrative expense	(1,550)	(1,888)	(3,165)	(3,734)
Operating income (loss)	3,205	2,292	1,649	(855)
Cinema Exhibition [Member] | United States [Member] | Admissions [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	15,650	16,099	26,396	26,344
Cinema Exhibition [Member] | United States [Member] | Concessions [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	10,678	11,274	17,386	17,382
Cinema Exhibition [Member] | United States [Member] | Film Rent And Advertising Cost [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(8,891)	(9,108)	(14,530)	(14,166)
Cinema Exhibition [Member] | United States [Member] | Food and Beverage [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(2,661)	(2,931)	(4,288)	(4,514)
Cinema Exhibition [Member] | United States [Member] | Advertising And Other [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	3,150	2,885	5,159	4,827
Cinema Exhibition [Member] | Australia [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	29,981	22,909	49,687	38,591
Occupancy expense	(4,952)	(4,511)	(9,736)	(8,805)
Labor cost	(4,242)	(3,425)	(7,941)	(6,732)
Utilities	(880)	(651)	(1,960)	(1,493)
Cleaning and maintenance	(1,438)	(1,154)	(2,569)	(2,304)
Other operating expenses	(1,044)	(799)	(1,937)	(1,574)
Operating expense	(23,095)	(18,657)	(41,124)	(34,056)
Depreciation and amortization	(900)	(905)	(1,814)	(1,819)
General and administrative expense	(420)	(427)	(756)	(772)
Depreciation, amortization, general and administrative expense	(1,320)	(1,332)	(2,570)	(2,591)
Operating income (loss)	5,566	2,920	5,993	1,944
Cinema Exhibition [Member] | Australia [Member] | Admissions [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	18,829	14,275	31,005	23,905
Cinema Exhibition [Member] | Australia [Member] | Concessions [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	9,323	7,213	15,410	12,069
Cinema Exhibition [Member] | Australia [Member] | Film Rent And Advertising Cost [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(8,515)	(6,586)	(13,590)	(10,542)
Cinema Exhibition [Member] | Australia [Member] | Food and Beverage [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(2,024)	(1,531)	(3,391)	(2,606)
Cinema Exhibition [Member] | Australia [Member] | Advertising And Other [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	1,829	1,421	3,272	2,617
Cinema Exhibition [Member] | New Zealand [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	3,531	3,615	5,823	6,042
Occupancy expense	(709)	(737)	(1,453)	(1,471)
Labor cost	(545)	(579)	(1,028)	(1,113)
Utilities	(132)	(136)	(231)	(234)
Cleaning and maintenance	(182)	(196)	(327)	(390)
Other operating expenses	(192)	(147)	(394)	(454)
Operating expense	(3,039)	(3,205)	(5,432)	(5,867)
Depreciation and amortization	(109)	(111)	(219)	(214)
General and administrative expense	4	(58)	3	(71)
Depreciation, amortization, general and administrative expense	(105)	(169)	(216)	(285)
Operating income (loss)	387	241	175	(110)
Cinema Exhibition [Member] | New Zealand [Member] | Admissions [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	2,310	2,338	3,809	3,884
Cinema Exhibition [Member] | New Zealand [Member] | Concessions [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	1,070	1,135	1,749	1,901
Cinema Exhibition [Member] | New Zealand [Member] | Film Rent And Advertising Cost [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(1,056)	(1,141)	(1,637)	(1,789)
Cinema Exhibition [Member] | New Zealand [Member] | Food and Beverage [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(223)	(269)	(362)	(416)
Cinema Exhibition [Member] | New Zealand [Member] | Advertising And Other [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 151	$ 142	$ 265	$ 257