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Real Estate - Schedule of Development in Process Activities (Details) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 USD ($) Property | Dec. 31, 2022 USD ($) Property | Jan. 01, 2023 USD ($) Property | Jan. 01, 2022 USD ($) Property
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Number of properties under development | Property | 3 | 4 |  | 4 | 2 |
Real estate under development, beginning balance | $ 94,799 | $ 184,602 |  | $ 184,602 | $ 203,773 |
Transfers In | 0 | 9,610 |  |  |  |
Capitalized Costs | 14,857 | 4,910 |  |  |  |
Transfers Out | $ 104,660 | $ 33,691 |  |  |  |
Core Portfolio |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Number of properties under development | Property | 2 | 2 |  | 2 | 0 |
Real estate under development, beginning balance | $ 66,083 | $ 54,817 |  | $ 54,817 | $ 42,517 |
Transfers In | 0 | 9,610 |  |  |  |
Capitalized Costs | 11,266 | 2,690 |  |  |  |
Transfers Out | $ 0 | $ 0 |  |  |  |
Fund Portfolio | Fund II |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Number of properties under development | Property | 0 | 0 | [1] | 0 | 0 | [1]
Real estate under development, beginning balance | $ 0 | $ 34,072 | [1] | $ 34,072 | $ 35,125 | [1]
Transfers In | 0 | 0 | [1] |  |  |
Capitalized Costs | 633 | 503 | [1] |  |  |
Transfers Out | $ 34,705 | $ 1,556 | [1] |  |  |
Fund Portfolio | Fund III |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Number of properties under development | Property | 1 | 1 |  | 1 | 1 |
Real estate under development, beginning balance | $ 28,716 | $ 25,798 |  | $ 25,798 | $ 24,296 |
Transfers In | 0 | 0 |  |  |  |
Capitalized Costs | 2,958 | 1,502 |  |  |  |
Transfers Out | $ 40 | $ 0 |  |  |  |
Fund Portfolio | Fund IV |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Number of properties under development | Property | 0 | 1 | [2] | 1 | 1 | [2]
Real estate under development, beginning balance | $ 0 | $ 69,915 | [2] | $ 69,915 | $ 101,835 | [2]
Transfers In | 0 | 0 | [2] |  |  |
Capitalized Costs | 0 | 215 | [2] |  |  |
Transfers Out | $ 69,915 | $ 32,135 | [2] |  |  |
[1] | Transfers out include $1.6 million related to a portion of one Fund II property that was transferred out of development.
[2] | Transfers out include $13.4 million related to a portion of one Fund IV property that was transferred out of development and an impairment charge totaling $18.7 million on one Fund IV development property (Note 8)

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- Definition The current amount of expenditures for a real estate project that has not yet been completed. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(d)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 + Details
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