Description Of Business And Segment Reporting (Summary Of Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total Assets	$ 533,051	$ 587,055
Cash and cash equivalents	12,906	29,947	$ 83,251
United States [Member]
Segment Reporting Information [Line Items]
Total Assets	291,581	337,595
Australia [Member]
Segment Reporting Information [Line Items]
Total Assets	193,899	200,220
New Zealand [Member]
Segment Reporting Information [Line Items]
Total Assets	47,571	49,240
Country [Member]
Segment Reporting Information [Line Items]
Total Assets	533,051	587,055
Cinema Exhibition [Member]
Segment Reporting Information [Line Items]
Total Assets	230,337	267,874
Real Estate [Member]
Segment Reporting Information [Line Items]
Total Assets	236,213	247,247
Corporate [Member]
Segment Reporting Information [Line Items]
Total Assets	$ 66,501	$ 71,934