Prepaid And Other Assets (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2009	Feb. 05, 2007
Prepaid And Other Assets [Abstract]
Prepaid expenses	$ 1,859,000	$ 1,185,000
Prepaid taxes	1,687,000	1,929,000
Income taxes receivable		52,000
Prepaid rent		1,438,000
Deposits	233,000	244,000
Interest receivable	8,000
Investment in marketable securities	17,000	23,000
Total prepaid and other current assets	3,804,000	4,871,000
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	$ 838,000	$ 1,500,000
Straight-line rent asset	8,302,000	4,477,000
Long-term deposits	10,000	12,000
Total other non-current assets	$ 10,284,000	$ 6,461,000