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Real Estate - Schedule of Construction in Progress (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Real Estate [Line Items] |  |
Construction in progress | $ 151,699 | $ 69,477
Twinbrook Quarter |  |
Real Estate [Line Items] |  |
Construction in progress | 89,280 | 0
Hampden House (formerly 7316 Wisconsin Avenue) |  |
Real Estate [Line Items] |  |
Construction in progress | 51,927 | 50,723
The Waycroft |  |
Real Estate [Line Items] |  |
Construction in progress | 0 | 8,651
Ashbrook Marketplace |  |
Real Estate [Line Items] |  |
Construction in progress | 0 | 153
Other |  |
Real Estate [Line Items] |  |
Construction in progress | $ 10,492 | $ 9,950

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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=120400017&loc=d3e572229-122910 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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