Prepaid And Other Assets (Summary Of Prepaid And Other Assets) (Details) - USD ($)		Dec. 31, 2017	Dec. 31, 2016		Feb. 05, 2007
Prepaid And Other Assets [Abstract]
Prepaid expenses		$ 1,625,000	$ 981,000
Prepaid taxes		653,000	1,622,000
Prepaid rent		1,055,000	1,237,000
Income taxes receivable		1,686,000	1,476,000
Deposits		243,000	404,000
Restricted cash		17,000	17,000
Investment in marketable securities		46,000	50,000
Total prepaid and other current assets		5,325,000	5,787,000	[1]
Recoverable asset	[2]		9,480,000
Other non-cinema and non-rental real estate assets		1,134,000	1,134,000
Investment in Reading International Trust I		838,000	838,000		$ 1,500,000
Interest rate cap at fair value			1,000
Straight-line rent asset		2,564,000	2,457,000
Long-term deposits		7,000	39,000
Total non-current assets		$ 4,543,000	$ 13,949,000	[1]

[1] Certain prior year balances have been reclassified to conform to the 2017 presentation (see Note 2 - Summary of Significant Accounting Policies - Reclassifications).

[2] Refer to Note 19 - Insurance Recoveries on Impairment and Related Losses due to Earthquake for details on the estimation of the demolition costs for our Courtenay Central parking structure.