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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

X

- 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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X

- 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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- Details

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