Investments in and Advances to Unconsolidated Affiliates - Schedule of Investments (Parenthetical) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Feb. 28, 2025	Jan. 23, 2025	Jan. 22, 2025	Dec. 31, 2024	Sep. 25, 2024	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Note receivable from related party		$ 154,682		$ 154,682					$ 126,584
Allowance for credit losses		1,704		1,704					2,004		$ 1,279
Interest income		6,358	$ 5,413	12,454	$ 10,651
Impairment charge				$ 400
1238 Wisconsin Avenue
Schedule of Equity Method Investments [Line Items]
Debt Instrument, Description of Variable Rate Basis				The loan is secured by the venture members’ equity interest in the entity that owns the 1238 Wisconsin development property, bears interest at Prime + 1.0% (subject to a 4.5% floor), and matures on December 28, 2027.
1238 Wisconsin Avenue | Core Portfolio
Schedule of Equity Method Investments [Line Items]
Construction commitment		12,800		$ 12,800
Note receivable from related party		12,800		12,800					12,800
Allowance for credit losses		100		100					100
Interest income		$ 100	$ 100	$ 100	$ 100
Equity method investment, ownership percentage	[1],[2]	80.00%		80.00%
840 N. Michigan Avenue
Schedule of Equity Method Investments [Line Items]
Note receivable from related party		$ 1,500		$ 1,500					$ 2,300
Equity method investment, ownership percentage						2.50%
Note receivable maturity date				Jul. 31, 2025
840 N. Michigan Avenue | Maximum
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage						94.35%
840 N. Michigan Avenue | Minimum
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage						91.85%
Renaissance Portfolio
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage							48.00%	20.00%
Equity method investment, loss on change in control		$ 9,600		$ 9,600
Renaissance Portfolio | Maximum
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		100.00%		100.00%			68.00%
Renaissance Portfolio | Minimum
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage							20.00%
Renaissance Portfolio | Core Portfolio
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	[3]	68.00%		68.00%
Equity method investment, loss on change in control							$ (9,600)
Frederick Crossing
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage										90.00%
Fund IV
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		23.12%		23.12%
Fund V
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage		20.10%		20.10%						90.00%

[1] 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 June 30, 2025 and December 31, 2024 the related party note receivable had a principal balance of $12.8 million, net of a $0.1 million allowance for each period. The loan is secured by the venture members’ equity interest in the entity that owns the 1238 Wisconsin development property, bears interest at Prime + 1.0% (subject to a 4.5% floor), and matures on December 28, 2027. The Company recognized interest income of $0.1 million for each of the three and six months ended June 30, 2025 and 2024, respectively, related to this note receivable.

[2] Represents a VIE for which the Company is not the primary beneficiary (Note 15).

[3] On January 23, 2025, the Company acquired an additional 48% economic ownership interest, and increased its existing 20% interest to 68%, in the Renaissance Portfolio primarily located in Washington D.C. Prior to the acquisition, the Company accounted for its 20% interest under the equity method of accounting. Due to the Company gaining a controlling financial interest as a result of this acquisition, the Company concluded that the entity is a variable interest entity (“VIE”) and that it is the primary beneficiary, and it should consolidate its investment within its Core Portfolio effective January 23, 2025. Accordingly, the Company recognized a loss on change in control of $9.6 million (Note 2).