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, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Earnings Per Share [Abstract]
Net income (loss) attributable to Reading International, Inc.	$ (2,667)	$ (12,806)	$ (7,423)	$ (26,034)
Weighted average shares of common stock – basic	22,708,206	22,413,617	22,586,019	22,379,881
Weighted average shares of common stock – diluted	22,708,206	22,413,617	22,586,019	22,379,881
Basic earnings (loss) per share	$ (0.12)	$ (0.57)	$ (0.33)	$ (1.16)
Diluted earnings (loss) per share	$ (0.12)	$ (0.57)	$ (0.33)	$ (1.16)
Awards excluded from diluted earnings (loss) per share	3,696,662	207,657	3,696,662	207,657