Earnings Per Share (Computation Of Basic And Diluted Earnings (Loss) Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Earnings Per Share [Abstract]
Net income (loss) attributable to Reading International, Inc.	$ (4,752)	$ (13,228)
Weighted average shares of common stock – basic	22,426,184	22,348,994
Weighted average shares of common stock – diluted	22,426,184	22,348,994
Basic earnings (loss) per share	$ (0.21)	$ (0.59)
Diluted earnings (loss) per share	$ (0.21)	$ (0.59)
Awards excluded from diluted earnings (loss) per share	2,410,639	1,324,698