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Non-controlling Interests (Components Of Income Attributable To Non-controlling Interest) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Noncontrolling Interest [Line Items] |  |  |  |
Net income (loss) attributable to noncontrolling interests in consolidated subsidiaries | $ (105) | $ (124) | $ 2,889 | $ (389)
Australian Country Cinemas, Pty Ltd [Member] |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Net income (loss) attributable to noncontrolling interests in consolidated subsidiaries | 6 | (35) | 48 | (80)
Shadow View Land And Farming, LLC [Member] |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Net income (loss) attributable to noncontrolling interests in consolidated subsidiaries |  | (5) | 3,166 | (48)
Sutton Hill Properties, LLC [Member] |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Net income (loss) attributable to noncontrolling interests in consolidated subsidiaries | $ (111) | $ (84) | $ (325) | $ (261)

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