Earnings (Loss) Per Share (Calculation Of Earnings (Loss) Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Earnings (Loss) Per Share [Abstract]
Loss from continuing operations	$ (668)	$ (316)
Income from discontinued operations		77
Net loss attributable to Reading International, Inc. common shareholders	$ (668)	$ (239)
Loss from continuing operations	$ (0.03)	$ (0.01)
Earnings from discontinued operations, net	$ 0.00	$ 0.00
Basic loss per share attributable to Reading International, Inc. shareholders	$ (0.03)	$ (0.01)
Loss from continuing operations	$ (0.03)	$ (0.01)
Earnings from discontinued operations, net	$ 0.00	$ 0.00
Diluted loss per share attributable to Reading International, Inc. shareholders	$ (0.03)	$ (0.01)
Weighted average shares of common stock – basic	23,263,010	22,710,713
Weighted average shares of common stock – dilutive	23,263,010	22,710,713