Non-controlling Interests (Summary Of Changes In Controlling And Non-controlling Stockholders’ Equity) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Noncontrolling Interest [Line Items]
Balance	$ (40,407)
Balance	(4,790)	$ 32,996
Net income (loss)	(4,943)	(13,403)
Other comprehensive income, net	453	(2,541)
Share-based compensation expense	600	678
Restricted Stock Units		(2)
Balance	(8,680)	17,728
Balance	(40,407)
Additional Paid-In Capital [Member]
Noncontrolling Interest [Line Items]
Balance	157,751	155,402
Share-based compensation expense	600	678
Restricted Stock Units		(2)
Balance	158,351	156,078
Retained Earnings (Accumulated Deficit) [Member]
Noncontrolling Interest [Line Items]
Balance	(114,790)	(79,489)
Net income (loss)	(4,752)	(13,228)
Balance	(119,542)	(92,717)
Treasury Shares [Member]
Noncontrolling Interest [Line Items]
Balance	(40,407)	(40,407)
Balance	(40,407)	(40,407)
Accumulated Other Comprehensive Income/(Loss) [Member]
Noncontrolling Interest [Line Items]
Balance	(7,173)	(2,673)
Other comprehensive income, net	452	(2,538)
Balance	(6,721)	(5,211)
Reading International Inc. Stockholders' Equity [Member]
Noncontrolling Interest [Line Items]
Balance	(4,364)	33,087
Net income (loss)	(4,752)	(13,228)
Other comprehensive income, net	452	(2,538)
Share-based compensation expense	600	678
Restricted Stock Units		(2)
Balance	(8,064)	17,997
Noncontrolling Interests [Member]
Noncontrolling Interest [Line Items]
Balance	(426)	(91)
Net income (loss)	(191)	(175)
Other comprehensive income, net	1	(3)
Balance	$ (616)	(269)
Class A [Member]
Noncontrolling Interest [Line Items]
Balance, shares	20,745,594
Balance, shares	20,745,594
Class A [Member] | Common Stock Shares Outstanding [Member]
Noncontrolling Interest [Line Items]
Balance	$ 238	$ 237
Balance, shares	20,743,000	20,664,000
Restricted Stock Units, shares		9,000
Balance	$ 238	$ 237
Balance, shares	20,743,000	20,673,000
Class B [Member]
Noncontrolling Interest [Line Items]
Balance, shares	1,680,590
Balance, shares	1,680,590
Class B [Member] | Common Stock Shares Outstanding [Member]
Noncontrolling Interest [Line Items]
Balance	$ 17	$ 17
Balance, shares	1,681,000	1,681,000
Balance	$ 17	$ 17
Balance, shares	1,681,000	1,681,000