Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Consolidated Statements Of Comprehensive Income [Abstract]
Net income (loss)	$ 22,594	$ (22,887)	$ 44,661	$ (28,843)
Foreign currency translation gain (loss)	(1,698)	10,655	(4,356)	(5,051)
Gain (loss) on cash flow hedges	55	10	116	(205)
Other	51	51	103	84
Comprehensive income (loss)	21,002	(12,171)	40,524	(34,015)
Less: net income (loss) attributable to noncontrolling interests	(108)	(185)	2,994	(266)
Less: comprehensive income (loss) attributable to noncontrolling interests		(9)		(9)
Comprehensive income (loss) attributable to Reading International, Inc.	$ 21,110	$ (11,977)	$ 37,530	$ (33,740)