Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Consolidated Statements Of Comprehensive Income [Abstract]
Net income (loss)	$ 22,068	$ (5,955)
Foreign currency translation gain (loss)	(2,657)	(15,698)
Gain (loss) on cash flow hedges	61	(214)
Other	51	33
Comprehensive income (loss)	19,523	(21,834)
Less: net income (loss) attributable to noncontrolling interests	3,103	(80)
Less: comprehensive income (loss) attributable to noncontrolling interests		(18)
Comprehensive income (loss) attributable to Reading International, Inc.	$ 16,420	$ (21,736)