Earnings Per Share (Computation Of Basic And Diluted Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Net income (loss) attributable to Reading International, Inc.	$ (12,806)	$ (2,778)	$ (26,034)	$ (13,889)
Weighted average shares of common stock – basic	22,413,617	22,262,214	22,379,881	22,183,618
Weighted average dilutive impact of awards	832,974	1,240,292	915,006	1,240,292
Weighted average number of common stock – diluted	23,246,591	23,502,506	23,294,887	23,423,910
Basic earnings (loss) per share	$ (0.57)	$ (0.12)	$ (1.16)	$ (0.63)
Diluted earnings (loss) per share	$ (0.57)	$ (0.12)	$ (1.16)	$ (0.63)
Awards excluded from diluted earnings (loss) per share	207,657	205,122	207,657	205,122