Revenues (Schedule of Rental Revenues) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues [Abstract]
Base rents	$ 5,593,000	$ 6,238,000	$ 17,390,000	$ 21,731,000
Expense recoveries	1,624,000	1,930,000	5,767,000	7,023,000
Percentage rent	71,000	103,000	340,000	467,000
Straight-line rents	318,000	(25,000)	231,000	146,000
Amortization of intangible lease liabilities, net	90,000	163,000	411,000	487,000
Total rents	$ 7,696,000	$ 8,409,000	$ 24,139,000	$ 29,854,000