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Debt - Mortgages Payable - Additional Information (Details) $ in Millions				1 Months Ended	9 Months Ended
		Jan. 24, 2025 USD ($)	Jan. 23, 2025 USD ($)	Apr. 30, 2025 USD ($)	Sep. 30, 2025 USD ($) Mortgage	Jan. 22, 2025	Dec. 31, 2024 Mortgage
Debt Instrument [Line Items]
Scheduled principal payment				$ 28.5
Renaissance Portfolio [Member]
Debt Instrument [Line Items]
Ownership interest rate			48.00%			20.00%
Renaissance Portfolio [Member] | Minimum
Debt Instrument [Line Items]
Ownership interest rate			20.00%
Renaissance Portfolio [Member] | Maximum
Debt Instrument [Line Items]
Ownership interest rate			68.00%		100.00%
Mortgages
Debt Instrument [Line Items]
Number of properties collateralized | Mortgage					49		31
Mortgages | Minimum | Fund II
Debt Instrument [Line Items]
Maturity Date					2025-08
Mortgages | Minimum | Fund V
Debt Instrument [Line Items]
Maturity Date					2026-04
Mortgages | Maximum | Fund II
Debt Instrument [Line Items]
Maturity Date					2028-08
Mortgages | Maximum | Fund V
Debt Instrument [Line Items]
Maturity Date					2027-08
Mortgages | Variable Rate Debt | Minimum | Fund II
Debt Instrument [Line Items]
Basis spread on variable rate					1.90%
Mortgages | Variable Rate Debt | Minimum | Fund V
Debt Instrument [Line Items]
Basis spread on variable rate					2.50%
Mortgages | Variable Rate Debt | Maximum | Fund II
Debt Instrument [Line Items]
Basis spread on variable rate					2.61%
Mortgages | Variable Rate Debt | Maximum | Fund V
Debt Instrument [Line Items]
Basis spread on variable rate					1.75%
REIT Portfolio
Debt Instrument [Line Items]
Repayment of property mortgage loan					$ 50.0
Scheduled principal payment					$ 1.4
REIT Portfolio | Renaissance Portfolio [Member]
Debt Instrument [Line Items]
Ownership interest rate	[1]				68.00%
Investment owned balance principal amount			$ 156.1
Investment Owned Balance Principal Paydown		$ 50.0
Maturity date			Nov. 06, 2026
Basis spread on variable rate		1.55%	26.50%
Interest rate		9.11%
Investment Management
Debt Instrument [Line Items]
Repayment of property mortgage loan					$ 33.0
Scheduled principal payment					3.6
Investment Management | Minimum | Fund II
Debt Instrument [Line Items]
Maximum borrowing capacity					20.0
Investment Management | Minimum | Fund V
Debt Instrument [Line Items]
Maximum borrowing capacity					50.2
Investment Management | Maximum | Fund II
Debt Instrument [Line Items]
Maximum borrowing capacity					50.0
Investment Management | Maximum | Fund V
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 57.0
[1] 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 REIT Portfolio segment effective January 23, 2025. Accordingly, the Company recognized a loss on change in control of $9.6 million (Note 2).

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