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Property And Equipment (Narrative) (Details) | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2024 USD ($) | Jun. 30, 2023 USD ($) | May 31, 2023 USD ($) | Sep. 30, 2025 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) item | Sep. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) | May 21, 2025 USD ($) | Mar. 31, 2025 USD ($) | Jan. 31, 2025 USD ($) | May 31, 2024 a | Mar. 31, 2024 USD ($) | Feb. 23, 2024 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of held for sale properties sold | item |  |  |  |  |  | 3 |  |  |  |  |  |  |  |
Depreciation expense for operating property |  |  |  | $ 3,200,000 | $ 3,900,000 | $ 9,900,000 | $ 11,900,000 |  |  |  |  |  |  |
Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Courtenay Central ETC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale price |  |  |  |  |  |  |  |  |  | $ 21,500,000 | $ 21,500,000 |  |  |
Book value | $ 14,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Property book value adjustment | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Culver City, California [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale price |  |  |  |  |  |  |  |  |  |  |  |  | $ 10,000,000.0 |
Adjustment to sale price |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |
Book value |  |  | 10,800,000 |  |  |  |  |  |  |  |  |  |  |
Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Cannon Park ETC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale price |  |  |  |  |  |  |  | $ 20,700,000 |  |  |  |  |  |
Area of Land | a |  |  |  |  |  |  |  |  |  |  |  | 9.4 |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Culver City, California [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale price |  |  | $ 8,300,000 |  |  |  |  |  |  |  |  |  |  | $ 10,000,000.0
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Cannon Park ETC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale price |  |  |  |  |  |  |  |  | $ 20,700,000 |  |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | 2483 Trenton Avenue Williamsport Pennsylvania [Member] | Land [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property book value adjustment |  | $ 0 |  |  |  |  |  |  |  |  |  |  |  |

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