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Non-controlling Interests (Components Of Income Attributable To Non-controlling Interest) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2023 | Mar. 31, 2022
Noncontrolling Interest [Line Items] |  |
Net income (loss) attributable to noncontrolling interests in consolidated subsidiaries | $ (213) | $ (99)
Australian Country Cinemas, Pty Ltd [Member] |  |
Noncontrolling Interest [Line Items] |  |
Net income (loss) attributable to noncontrolling interests in consolidated subsidiaries | 10 | (11)
Shadow View Land And Farming, LLC [Member] |  |
Noncontrolling Interest [Line Items] |  |
Net income (loss) attributable to noncontrolling interests in consolidated subsidiaries |  | (1)
Sutton Hill Properties, LLC [Member] |  |
Noncontrolling Interest [Line Items] |  |
Net income (loss) attributable to noncontrolling interests in consolidated subsidiaries | $ (223) | $ (87)

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