Earnings (Loss) Per Share (Calculation Of Earnings (Loss) Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Earnings (Loss) Per Share [Abstract]
Income (loss) from continuing operations	$ 239	$ 15,776	$ (3)	$ 13,296
Income from discontinued operations		1,656		1,656
Net Income ( loss) attributable to Reading International, Inc. common shareholders	$ 239	$ 17,432	$ (3)	$ 14,952
Earnings (loss) from continuing operations	$ 0.01	$ 0.69		$ 0.58
Earnings from discontinued operations, net		$ 0.07		$ 0.07
Basic and diluted income (loss) per share attributable to Reading International, Inc. common shareholders	$ 0.01	$ 0.76		$ 0.65
Weighted average shares of common stock - basic	23,009,209	22,789,718	22,969,392	22,749,202
Weighted average shares of common stock - dilutive	23,177,815	22,960,713	22,969,392	22,920,198