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Real Estate - Schedule of Development in Process Activities (Details) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2019 USD ($) property | Dec. 31, 2018 USD ($) property
Property, Plant and Equipment [Line Items] |  |
Number of properties under development | property | 5 | 3
Real estate under development | $ 211,199 | $ 120,297
Transfers In | 78,821 |
Capitalized Costs | 12,081 |
Transfers Out | $ 0 |
Core Portfolio |  |
Property, Plant and Equipment [Line Items] |  |
Number of properties under development | property | 2 | 1
Real estate under development | $ 70,483 | $ 7,759
Transfers In | 57,342 |
Capitalized Costs | 5,382 |
Transfers Out | $ 0 |
Fund Portfolio | Fund II |  |
Property, Plant and Equipment [Line Items] |  |
Number of properties under development | property | 0 | 0
Real estate under development | $ 8,716 | $ 7,462
Transfers In | 0 |
Capitalized Costs | 1,254 |
Transfers Out | $ 0 |
Fund Portfolio | Fund III |  |
Property, Plant and Equipment [Line Items] |  |
Number of properties under development | property | 1 | 1
Real estate under development | $ 35,001 | $ 21,242
Transfers In | 12,313 |
Capitalized Costs | 1,446 |
Transfers Out | $ 0 |
Fund Portfolio | Fund IV |  |
Property, Plant and Equipment [Line Items] |  |
Number of properties under development | property | 2 | 1
Real estate under development | $ 96,999 | $ 83,834
Transfers In | 9,166 |
Capitalized Costs | 3,999 |
Transfers Out | $ 0 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.10) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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