Description Of Business And Segment Reporting (Summary Of Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total Assets	$ 587,055	$ 687,702
Cash and cash equivalents	29,947	83,251	$ 26,826
United States [Member]
Segment Reporting Information [Line Items]
Total Assets	337,595	336,029
Australia [Member]
Segment Reporting Information [Line Items]
Total Assets	200,220	274,330
New Zealand [Member]
Segment Reporting Information [Line Items]
Total Assets	49,240	77,343
Country [Member]
Segment Reporting Information [Line Items]
Total Assets	587,055	687,702
Cinema Exhibition [Member]
Segment Reporting Information [Line Items]
Total Assets	267,874	316,169
Real Estate [Member]
Segment Reporting Information [Line Items]
Total Assets	247,247	257,224
Corporate [Member]
Segment Reporting Information [Line Items]
Total Assets	$ 71,934	$ 114,309