Prepaid And Other Assets (Summary Of Prepaid And Other Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Prepaid And Other Assets [Abstract]
Prepaid expenses	$ 2,486	$ 1,625
Prepaid rent	1,101	1,055
Prepaid taxes	633	653
Income taxes receivable	2,187	1,686
Deposits	243	243
Investment in marketable securities	46	46
Restricted cash	17	17
Total prepaid and other current assets	6,713	5,325
Straight-line rent asset	3,421	2,564
Other non-cinema and non-rental real estate assets	1,134	1,134
Investment in Reading International Trust I	838	838
Long-term deposits	8	7
Long-term restricted cash	260
Total non-current assets	$ 5,661	$ 4,543