Revenues (Schedule of Rent Revenues) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues [Abstract]
Base rents	$ 23,111,000	$ 27,946,000	$ 29,419,000
Expense recoveries	7,769,000	9,394,000	8,344,000
Percentage rent	534,000	676,000	1,448,000
Straight-line rents	361,000	(61,000)	(1,513,000)
Amortization of intangible lease liabilities, net	896,000	657,000	710,000
Total rents	$ 32,671,000	$ 38,612,000	$ 38,408,000