Segment Reporting (Summary Of Cinema Exhibition Segment Revenue To Segment Operating Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
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)
Impairment expense	0	0	0
General and administrative expense	(19,306)	(20,161)	(20,172)
Operating income (loss)	(5,307)	(14,033)	(12,031)
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)
Operating income (loss)	9,560	1,882	3,915
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)
Depreciation, amortization, general and administrative expense	(12,596)	(13,941)	(15,332)
Operating income (loss)	3,643	(2,797)	124
United States [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	99,488	99,938	113,798
Occupancy expense	(16,962)	(22,516)	(25,090)
Labor cost	(16,482)	(17,323)	(17,397)
Utilities	(5,413)	(5,973)	(6,856)
Cleaning and maintenance	(6,670)	(6,664)	(8,155)
Other operating expenses	(8,665)	(7,948)	(9,459)
Operating expense	(92,271)	(99,810)	(111,209)
Depreciation and amortization	(4,403)	(5,011)	(5,911)
General and administrative expense	(2,594)	(2,368)	(2,502)
Depreciation, amortization, general and administrative expense	(6,997)	(7,379)	(8,413)
Operating income (loss)	220	(7,251)	(5,824)
United States [Member] | Admissions [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	54,214	55,782	63,662
United States [Member] | Concessions [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	35,523	34,314	38,884
United States [Member] | Film Rent And Advertising Cost [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(28,971)	(30,315)	(34,182)
United States [Member] | Food and Beverage [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(9,108)	(9,071)	(10,070)
United States [Member] | Advertising And Other [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	9,751	9,842	11,252
Australia [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	77,736	82,032	80,025
Occupancy expense	(17,708)	(18,086)	(17,207)
Labor cost	(13,613)	(14,040)	(13,243)
Utilities	(3,207)	(2,861)	(2,545)
Cleaning and maintenance	(4,614)	(5,069)	(4,696)
Other operating expenses	(3,342)	(3,597)	(3,313)
Operating expense	(68,855)	(71,918)	(68,427)
Depreciation and amortization	(3,623)	(4,763)	(4,824)
General and administrative expense	(1,355)	(1,325)	(1,495)
Depreciation, amortization, general and administrative expense	(4,978)	(6,088)	(6,319)
Operating income (loss)	3,903	4,026	5,279
Australia [Member] | Admissions [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	47,414	48,186	48,630
Australia [Member] | Concessions [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	24,373	27,670	26,119
Australia [Member] | Film Rent And Advertising Cost [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(21,081)	(22,124)	(21,814)
Australia [Member] | Food and Beverage [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(5,290)	(6,141)	(5,609)
Australia [Member] | Advertising And Other [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	5,949	6,176	5,276
New Zealand [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	11,379	13,160	13,818
Occupancy expense	(2,883)	(3,106)	(3,081)
Labor cost	(2,115)	(2,385)	(2,417)
Utilities	(501)	(394)	(435)
Cleaning and maintenance	(759)	(886)	(971)
Other operating expenses	(934)	(1,066)	(876)
Operating expense	(11,238)	(12,258)	(12,549)
Depreciation and amortization	(432)	(458)	(600)
General and administrative expense	(189)	(16)
Depreciation, amortization, general and administrative expense	(621)	(474)	(600)
Operating income (loss)	(480)	428	669
New Zealand [Member] | Admissions [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	7,256	7,663	8,509
New Zealand [Member] | Concessions [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	3,541	4,375	4,585
New Zealand [Member] | Film Rent And Advertising Cost [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(3,313)	(3,474)	(3,858)
New Zealand [Member] | Food and Beverage [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating expense	(733)	(947)	(911)
New Zealand [Member] | Advertising And Other [Member] | Cinema Exhibition [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenue	$ 582	$ 1,122	$ 724