Investments in and Advances to Unconsolidated Affiliates - Schedule of Investments (Parenthetical) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024		Dec. 31, 2023	Dec. 31, 2022	Sep. 25, 2024
Schedule of Equity Method Investments [Line Items]
Note receivable from related party		$ 126,584	[1]	$ 124,949
Allowance for credit losses		2,004	[1]	1,279	$ 898
Interest income		25,085		19,993	$ 14,641
Impairment charge		400
Long-term debt outstanding	[2],[3]	$ 1,547,947		1,881,087
1238 Wisconsin Avenue
Schedule of Equity Method Investments [Line Items]
Debt Instrument, Description of Variable Rate Basis		The loan is collateralized by the venture members’ equity interest in the entity that holds the 1238 Wisconsin development property, bears interest at Prime + 1.0% subject to a 4.5% floor and matures on December 28, 2027 (as extended).
1238 Wisconsin Avenue | Core Portfolio
Schedule of Equity Method Investments [Line Items]
Construction commitment		$ 12,800
Note receivable from related party		12,800		12,800
Allowance for credit losses		100		100
Interest income		$ 200		200
Equity method investment, ownership percentage	[4],[5]	80.00%
Fund V
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		20.10%				90.00%
Long-term debt outstanding				33,500
Fund IV
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		23.12%
Long-term debt outstanding				$ 21,900
Frederick Crossing
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage						90.00%
840 N. Michigan Avenue
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage				3.42%
Debt Instrument, Basis Spread on Variable Rate		6.50%		6.50%
Long-term debt outstanding		$ 2,300		$ 1,400
840 N. Michigan Avenue | Maximum
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage				91.85%
840 N. Michigan Avenue | Minimum
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage				88.43%

[1] The aggregate carrying amount of notes receivable included above for Federal income tax purposes was approximately $126.2 million as of December 31, 2024.

[2] Includes $111.2 million and $151.4 million, respectively, of variable-rate debt that is subject to interest cap agreements as of the periods presented. The effective fixed rates ranged from 4.50% to 6.00%.

[3] Includes $852.0 million and $1,249.8 million, respectively, of variable-rate debt that has been fixed with interest rate swap agreements as of the periods presented. The effective fixed rates ranged from 1.98% to 4.61%.

[4] Includes the amounts advanced against a $12.8 million construction commitment from the Company to the venture that holds its investment in 1238 Wisconsin. As of December 31, 2024 and December 31, 2023 the note receivable from a related party had a balance of $12.8 million, as of each period, net of an allowance for credit losses of $0.1 million at each of December 31, 2024 and 2023. The loan is collateralized by the venture members’ equity interest in the entity that holds the 1238 Wisconsin development property, bears interest at Prime + 1.0% subject to a 4.5% floor and matures on December 28, 2027 (as extended). The Company recognized Interest income of $0.2 million for each of the years ended December 31, 2024 and 2023, respectively, related to this note receivable.

[5] Represents a variable interest entity (“VIE”) for which the Company is not the primary beneficiary (Note 16).