Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues
Total revenues	$ 36,033	$ 3,422	$ 57,339	$ 52,650
Costs and expenses
Depreciation and amortization	(5,801)	(5,266)	(11,451)	(10,537)
General and administrative	(8,834)	(5,102)	(13,931)	(11,047)
Total costs and expenses	(48,565)	(25,617)	(83,849)	(81,885)
Operating income (loss)	(12,532)	(22,195)	(26,510)	(29,235)
Interest expense, net	(3,005)	(2,004)	(7,368)	(3,797)
Gain (loss) on sale of assets	43,241		89,786
Other income (expense)	154	19	1,795	(196)
Income (loss) before income tax expense and equity earnings of unconsolidated joint ventures	27,858	(24,180)	57,703	(33,228)
Equity earnings of unconsolidated joint ventures	283	(274)	233	(195)
Income (loss) before income taxes	28,141	(24,454)	57,936	(33,423)
Income tax benefit (expense)	(5,547)	1,567	(13,275)	4,580
Net income (loss)	22,594	(22,887)	44,661	(28,843)
Less: net income (loss) attributable to noncontrolling interests	(108)	(185)	2,994	(266)
Net income (loss) attributable to Reading International, Inc. common shareholders	$ 22,702	$ (22,702)	$ 41,667	$ (28,577)
Basic earnings (loss) per share attributable to Reading International, Inc. shareholders	$ 1.04	$ (1.04)	$ 1.91	$ (1.31)
Diluted earnings (loss) per share attributable to Reading International, Inc. shareholders	$ 1.01	$ (1.04)	$ 1.86	$ (1.31)
Weighted average number of shares outstanding-basic	21,808,556	21,742,667	21,784,700	21,749,356
Weighted average number of shares outstanding-diluted	22,480,168	21,742,667	22,456,919	21,749,356
Cinema [Member]
Revenues
Total revenues	$ 32,715	$ 1,217	$ 50,829	$ 47,527
Costs and expenses
Total costs and expenses	(31,366)	(13,660)	(53,248)	(55,952)
Real Estate [Member]
Revenues
Total revenues	3,318	2,205	6,510	5,123
Costs and expenses
Total costs and expenses	$ (2,564)	$ (1,589)	$ (5,219)	$ (4,349)