Revenues (Schedule of Rental Revenues) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues [Abstract]
Base rents	$ 26,401,000	$ 27,159,000
Expense recoveries	9,194,000	9,286,000
Percentage rent	182,000	88,000
Straight-line rents	224,000	245,000
Amortization of intangible lease liabilities, net	591,000	669,000
Total rents	$ 36,592,000	$ 37,447,000