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Real Estate - Schedule of Construction in Progress (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Real Estate [Line Items]
Construction in progress	$ 557,711	$ 514,553
Twinbrook Quarter
Real Estate [Line Items]
Construction in progress	378,793	355,113
Accumulated capitalized interest costs	29,100	25,500
Hampden House
Real Estate [Line Items]
Construction in progress	163,903	142,240
Accumulated capitalized interest costs	15,700	14,100
Other
Real Estate [Line Items]
Construction in progress	$ 15,015	$ 17,200

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- Definition

Amount of accumulated interest costs capitalized as part of property, plant and equipment cost basis.

+ References

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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

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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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 976
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482856/976-310-50-1

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