Consolidated Statements Of Stockholders' Equity - USD ($) $ in Thousands	Cumulative Effect, Period of Adoption, Adjustment [Member] Reading International Inc. Stockholders' Equity [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings (Accumulated Deficit) [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Noncontrolling Interests [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Shares [Member] Class A [Member]	Common Shares [Member] Class B [Member]	Treasury Shares [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Reading International Inc. Stockholders' Equity [Member]	Additional Paid-In Capital [Member]	Retained Earnings (Accumulated Deficit) [Member]	Noncontrolling Interests [Member]	Class A [Member]	Class B [Member]	Total
Balance at Dec. 31, 2018					$ 232	$ 17		$ 6,115	$ 175,642	$ 147,452	$ 47,048	$ 4,337			$ 179,979
Balance, shares at Dec. 31, 2018					21,196,000	1,680,000	(25,222,000)
Net income (loss)									(26,429)		(26,429)	(74)			(26,503)
Other comprehensive income, net								(526)	(526)			2			(524)
Share-based compensation expense									1,463	1,463					1,463
Share repurchase plan									(14,518)						(14,518)
Share repurchase plan, shares					(1,159,000)		(14,518,000)
Class A common stock issued for share-based bonuses and options exercised									(185)	(185)					(185)
Retirements					$ (2)		$ 2		2						2
Restricted Stock Units					$ 1				(128)	(128)					(128)
Restricted Stock Units, shares					66,000
Contributions from noncontrolling stockholders												90			90
Distributions to noncontrolling stockholders												(42)			(42)
Balance (Accounting Standards Update 2014-09 [Member]) at Dec. 31, 2019	$ 28	$ 28	$ (46)	$ (18)
Balance at Dec. 31, 2019					$ 231	$ 17	$ (39,737)	5,589	135,349	148,602	20,647	4,267			139,616
Balance, shares at Dec. 31, 2019					20,103,000	1,680,000
Net income (loss)															(65,857)
Other comprehensive income, net								6,913	6,913			(11)			6,902
Share-based compensation expense									1,421	1,421					1,421
Share repurchase plan									(670)						(670)
Share repurchase plan, shares					(75,000)		(670,000)
Restricted Stock Units									(44)	(44)					(44)
Restricted Stock Units, shares					41,000
Contributions from noncontrolling stockholders												55			55
Distributions to noncontrolling stockholders												(250)			(250)
Balance (Accounting Standards Update 2014-09 [Member]) at Dec. 31, 2020	$ (65,200)	$ (65,200)	$ (657)	$ (65,857)
Balance at Dec. 31, 2020					$ 231	$ 17		12,502	77,769	149,979	(44,553)	3,404			81,173
Balance, shares at Dec. 31, 2020					20,069,000	1,680,000	(40,407,000)						20,068,606	1,680,590
Net income (loss)									31,921		31,921	2,893			34,814
Other comprehensive income, net								(7,620)	(7,620)			1			(7,619)
Share-based compensation expense									2,152	2,152					2,152
Restricted Stock Units					$ 2				(148)	(150)					(148)
Restricted Stock Units, shares					191,000
Contributions from noncontrolling stockholders												3			3
Distributions to noncontrolling stockholders												(5,315)			(5,315)
Balance at Dec. 31, 2021					$ 233	$ 17		$ 4,882	$ 104,074	$ 151,981	$ (12,632)	$ 986			$ 105,060
Balance, shares at Dec. 31, 2021					20,260,000	1,680,000	(40,407,000)						20,262,390	1,680,590