Earnings Per Share (Computation Of Basic And Diluted Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Earnings Per Share [Abstract]
Net income (loss) attributable to Reading International, Inc.	$ (4,157)	$ (7,028)	$ (11,580)	$ (33,062)
Weighted average shares of common stock – basic	22,717,260	22,426,184	22,631,660	22,394,385
Weighted average shares of common stock – diluted	22,717,260	22,426,184	22,631,660	22,394,385
Basic earnings (loss) per share	$ (0.18)	$ (0.31)	$ (0.51)	$ (1.48)
Diluted earnings (loss) per share	$ (0.18)	$ (0.31)	$ (0.51)	$ (1.48)
Awards excluded from diluted earnings (loss) per share	3,696,662	207,657	3,696,662	207,657