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Property And Equipment (Narrative) (Details) $ in Millions, $ in Millions |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 30, 2021 USD ($) | Aug. 30, 2021 NZD ($) | Jun. 30, 2021 USD ($) | Jun. 09, 2021 USD ($) | Jun. 09, 2021 AUD ($) | Mar. 05, 2021 USD ($) | Mar. 04, 2021 USD ($) | Mar. 04, 2021 NZD ($) | Feb. 28, 2021 USD ($) | Jan. 31, 2021 USD ($) a | Dec. 31, 2020 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Jan. 31, 2021 AUD ($) a | Aug. 28, 2019 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation expense for operating property |  |  |  |  |  |  |  |  |  |  |  | $ 5,100,000 | $ 5,400,000 | $ 16,400,000 | $ 15,600,000 |  |
Proceeds from sale of assets |  |  |  |  |  |  |  |  |  |  |  |  |  | 145,165,000 |  |  |
Village East Cinema, Manhattan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,900,000
Lease term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13 years
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Book value |  |  |  |  |  |  |  |  |  |  |  | 1,425,000 |  | 1,425,000 |  |  |
Sale price |  |  |  |  |  |  |  |  |  |  |  | 3,803,000 |  | 3,803,000 |  |  |
Coachella, CA [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total consideration |  |  |  |  |  | $ 11,000,000.0 |  |  |  |  |  |  |  |  |  |  |
Book value |  |  |  |  |  |  |  |  |  |  | $ 4,400,000 | 4,351,000 |  | 4,351,000 |  |  |
Sale price |  |  |  |  |  |  |  |  |  |  |  | 11,000,000 |  | 11,000,000 |  |  |
Impairment expense |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |
Coachella, CA [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Shadow View Land And Farming, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage by parent |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |
Percent of sale proceeds |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |
Manukau, NZ [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total consideration |  |  |  |  |  |  | $ 56,100,000 | $ 77.2 |  |  |  |  |  |  |  |  |
Book value |  |  |  |  |  |  |  |  |  |  | 13,600,000 | 13,618,000 |  | 13,618,000 |  |  |
Sale price |  |  |  |  |  |  |  |  |  |  |  | 56,058,000 |  | 56,058,000 |  |  |
Impairment expense |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |
Proceeds from sale of assets |  |  |  |  |  |  |  | $ 1.0 |  |  |  |  |  |  |  |  |
New South Wales [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total consideration |  |  |  | $ 69,600,000 | $ 90.0 |  |  |  |  |  |  |  |  |  |  |  |
Book value |  |  |  |  |  |  |  |  |  |  |  | 30,231,000 |  | 30,231,000 |  |  |
Sale price |  |  |  |  |  |  |  |  |  |  |  | 69,579,000 |  | 69,579,000 |  |  |
Chicago [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Area of property | a |  |  |  |  |  |  |  |  |  | 2.6 |  |  |  |  |  | 2.6 |
Book value |  |  |  |  |  |  |  |  | $ 1,800,000 | $ 30,200,000 |  | 1,824,000 |  | 1,824,000 |  | $ 39.1 |
Sale price |  |  |  |  |  |  |  |  |  |  |  | $ 7,075,000 |  | $ 7,075,000 |  |  |
Impairment expense |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |  |
Proceeds from sale of assets |  |  | $ 6,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Invercargill, New Zealand [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total consideration | $ 3,800,000 | $ 5.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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