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Financial Instruments and Fair Value Measurements - Schedule of Items Measured at Fair Value on Nonrecurring Basis (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Real Estate [Line Items] |  |  |  |  |  |
Impairment charges |  | $ 3,686 | $ 33,311 | $ 3,686 | $ 33,311 |
Fair Value, Measurements, Nonrecurring |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |
Impairment charges | [1] |  |  |  |  | $ 33,311
Fair Value, Measurements, Nonrecurring | Acadia Realty Trust |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |
Impairment charges | [1] |  |  |  |  | $ 7,702
Fair Value, Measurements, Nonrecurring | 146 Geary Street, San Francisco, CA | Fund IV | Level 3 Inputs Projections |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |
Triggering Event |  |  |  | Reduced holding period |  | Reduced projected operating income
Impairment charges | [1] |  |  | $ 3,686 |  | $ 12,435
Fair Value, Measurements, Nonrecurring | 146 Geary Street, San Francisco, CA | Acadia Realty Trust | Fund IV | Level 3 Inputs Projections |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |
Impairment charges | [1] |  |  | $ 852 |  | $ 2,875
Fair Value, Measurements, Nonrecurring | 717 N. Michigan Avenue, Chicago, IL | Fund IV | Level 3 Inputs Projections |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |
Triggering Event |  |  |  |  |  | Reduced holding period and intended use
Impairment charges | [1] |  |  |  |  | $ 20,876
Fair Value, Measurements, Nonrecurring | 717 N. Michigan Avenue, Chicago, IL | Acadia Realty Trust | Fund IV | Level 3 Inputs Projections |  |  |  |  |  |
Real Estate [Line Items] |  |  |  |  |  |
Impairment charges | [1] |  |  |  |  | $ 4,827
[1] | The fair value of 717 N. Michigan Avenue was based on an observable contract to sell the asset, less estimated costs to sell. The Company estimated the fair value of 146 Geary Street based on a discounted cash flow analysis using a range of discount rates from 5.00% to 7.75% and a range of capitalization rates from 4.25% to 5.75%. As significant inputs to the models are unobservable, the Company determined that the value determined for these properties falls within Level 3 of the fair value reporting hierarchy.

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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482130/360-10-45-4 + Details
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