Investments In Unconsolidated Joint Ventures (Summary Of Equity Earnings From Investments In Unconsolidated Joint Ventures) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Schedule of Equity Method Investments [Line Items]
Total equity earnings	$ (97)	$ 220	$ (292)	$ 581
Rialto Cinemas [Member]
Schedule of Equity Method Investments [Line Items]
Total equity earnings	(24)	64	(132)	78
Mt. Gravatt [Member]
Schedule of Equity Method Investments [Line Items]
Total equity earnings	$ (73)	$ 156	$ (160)	$ 503