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Investments In Unconsolidated Joint Ventures (Summary Of Equity Earnings (Losses) From Investments In Unconsolidated Joint Ventures) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Schedule of Equity Method Investments [Line Items] |  |  |
Total equity earnings | $ (449) | $ 792 | $ 974
Mt. Gravatt [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total equity earnings | (249) | 674 | 690
Rialto Cinemas [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Total equity earnings | $ (200) | $ 118 | $ 284

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