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Business Segments (Details Textual) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 USD ($) OfficeBuilding Property ApartmentHome Segment Dwelling Community | Dec. 31, 2023 USD ($) | Jan. 01, 2023 ApartmentHome Property
Segment Reporting Information [Line Items] |  |  |
Number of reportable segments | Segment | 3 |  |
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] | President and Chief Executive Officer [Member] |  |
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description | Our CODM evaluates performance and allocates resources for all of our segments using property net operating income ("PNOI"), which is our measure of segment profit or loss. PNOI is defined as rental and other property revenues, excluding utility reimbursements, less direct property operating expenses, including utility reimbursements, for the consolidated communities; |  |
Development and Redevelopment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Right-of-use lease assets | $ | $ 107.7 | $ 109.0 |
Lease liabilities | $ | $ 121.8 | $ 118.7 |
Continuing Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of real estate properties | ApartmentHome | 5,243 |  |
Planned Homes [Member] | Continuing Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of real estate properties | Property | 16 |  |
Accessory Dwelling Units [Member] | Continuing Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of units in real estate property | Dwelling | 8 |  |
Commercial Office Building [Member] | Continuing Operations [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of real estate properties | OfficeBuilding | 1 |  |
Unconsolidated Investment In Iqhq And Mezzanine Investment Member |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of apartment communities | Community | 4 |  |
Number of apartment homes | ApartmentHome | 142 |  |
Wholly And Partially Owned Consolidated Properties [Member] | Operating Portfolio Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of real estate properties | Property |  |  | 20
Wholly And Partially Owned Consolidated Properties [Member] | Planned Apartment Homes [Member] | Operating Portfolio Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of units in real estate property | ApartmentHome |  |  | 5,243
Real Estate Partnership [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of real estate properties | Property | 9 |  |

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 47 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-47 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 54 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-54 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-18 + Details
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