Prepaid And Other Assets (Summary Of Prepaid And Other Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Prepaid And Other Assets [Abstract]
Prepaid expenses	$ 2,454	$ 1,761
Prepaid rent	1,026	930
Prepaid taxes	688	646
Income taxes receivable	4,523	2,704
Deposits	242	242
Investment in marketable securities	46	42
Restricted cash	868	1,342
Total prepaid and other current assets	9,847	7,667
Straight-line rent	4,141	4,150
Other non-cinema and non-rental real estate assets	1,134	1,134
Investment in Reading International Trust I	838	838
Long-term deposits	9	7
Total other non-current assets	$ 6,122	$ 6,129