Restatement of Previously Issued Consolidated Financial Statements (Schedule Of Effects Of Restatement On The Consolidated Balance Sheet) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued liabilities	$ 48,213			$ 43,828
Total current liabilities	143,113			127,083
Total liabilities	494,657			500,055
Retained earnings/(deficits)	(112,551)			(79,489)
Total Reading International, Inc. stockholders’ equity	1,598			33,087
Total stockholders' equity	1,029	$ 6,066	$ 17,728	$ 32,996	$ 42,055	$ 47,566	$ 50,972	$ 63,279
Previously Reported [Member]
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued liabilities	44,636
Total current liabilities	139,536
Total liabilities	491,080
Retained earnings/(deficits)	(108,974)
Total Reading International, Inc. stockholders’ equity	5,175
Total stockholders' equity	4,606
Revision of Prior Period, Adjustment [Member]
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable and accrued liabilities	3,577
Total current liabilities	3,577
Total liabilities	3,577
Retained earnings/(deficits)	(3,577)
Total Reading International, Inc. stockholders’ equity	(3,577)
Total stockholders' equity	$ (3,577)