Financial Instruments and Fair Value Measurements - Schedule of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Fair value, liability derivatives	$ (1,598)	$ (8,892)
Derivative Asset	31,145	28,989
Fund IV | Interest Rate Caps | Other Assets
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	54,500
Core Portfolio
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	731,000
Fair value, derivatives, net	26,857	13,868
Core Portfolio | Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Fair value, liability derivatives	$ (1,316)	$ (8,807)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accounts Payable and Accrued Liabilities	Accounts Payable and Accrued Liabilities
Derivative Asset	$ 28,173	$ 22,675
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets	Assets
Core Portfolio | Interest Rate Swaps | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 50,000
Core Portfolio | Interest Rate Swaps | Other Assets
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 681,000
Core Portfolio | Interest Rate Swaps | Minimum | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2023-10
Derivative Maturity Date	2029-07
Strike Rate	4.61%
Core Portfolio | Interest Rate Swaps | Minimum | Other Assets
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2022-05
Derivative Maturity Date	2025-03
Strike Rate	1.98%
Core Portfolio | Interest Rate Swaps | Maximum | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Strike Rate	4.61%
Core Portfolio | Interest Rate Swaps | Maximum | Other Assets
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2023-05
Derivative Maturity Date	2030-07
Strike Rate	3.61%
Core Portfolio | Fund IV | Interest Rate Caps | Other Assets
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2023-12
Derivative Maturity Date	2025-12
Fund Portfolio | Fund II
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 50,000
Fair value, derivatives, net	1,615	$ 634
Fund Portfolio | Fund II | Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Derivative Asset	$ 1,615	$ 634
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets	Assets
Fund Portfolio | Fund II | Interest Rate Swaps | Other Assets
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 50,000
Derivative Effective Date	2023-01
Derivative Maturity Date	2029-12
Fund Portfolio | Fund II | Interest Rate Swaps | Minimum | Other Assets
Derivatives, Fair Value [Line Items]
Strike Rate	3.23%
Fund Portfolio | Fund II | Interest Rate Swaps | Maximum | Other Assets
Derivatives, Fair Value [Line Items]
Strike Rate	3.23%
Fund Portfolio | Fund III | Interest Rate Caps
Derivatives, Fair Value [Line Items]
Derivative Asset	$ 1	$ 26
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets	Assets
Fund Portfolio | Fund III | Interest Rate Caps | Other Assets
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 33,000
Derivative Effective Date	2023-09
Derivative Maturity Date	2025-10
Fund Portfolio | Fund III | Interest Rate Caps | Minimum | Other Assets
Derivatives, Fair Value [Line Items]
Strike Rate	5.50%
Fund Portfolio | Fund III | Interest Rate Caps | Maximum | Other Assets
Derivatives, Fair Value [Line Items]
Strike Rate	5.50%
Fund Portfolio | Fund IV | Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Derivative Asset	$ 2	$ 29
Fund Portfolio | Fund IV | Interest Rate Swaps | Minimum | Other Assets
Derivatives, Fair Value [Line Items]
Strike Rate	6.00%
Fund Portfolio | Fund IV | Interest Rate Swaps | Maximum | Other Assets
Derivatives, Fair Value [Line Items]
Strike Rate	6.00%
Fund Portfolio | Fund IV | Interest Rate Caps
Derivatives, Fair Value [Line Items]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets	Assets
Fund Portfolio | Fund V
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 334,930
Fair value, derivatives, net	1,072	$ 5,540
Fund Portfolio | Fund V | Interest Rate Swaps
Derivatives, Fair Value [Line Items]
Fair value, liability derivatives	$ (282)	$ (85)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accounts Payable and Accrued Liabilities	Accounts Payable and Accrued Liabilities
Derivative Asset	$ 1,352	$ 5,523
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets	Assets
Fund Portfolio | Fund V | Interest Rate Swaps | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 127,909
Fund Portfolio | Fund V | Interest Rate Swaps | Other Assets
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 135,148
Fund Portfolio | Fund V | Interest Rate Swaps | Minimum | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2023-06
Derivative Maturity Date	2025-06
Strike Rate	4.08%
Fund Portfolio | Fund V | Interest Rate Swaps | Minimum | Other Assets
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2022-04
Derivative Maturity Date	2025-04
Strike Rate	2.61%
Fund Portfolio | Fund V | Interest Rate Swaps | Maximum | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2024-12
Derivative Maturity Date	2027-12
Strike Rate	4.54%
Fund Portfolio | Fund V | Interest Rate Swaps | Maximum | Other Assets
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2024-10
Derivative Maturity Date	2027-12
Strike Rate	3.72%
Fund Portfolio | Fund V | Interest Rate Caps
Derivatives, Fair Value [Line Items]
Fair value, liability derivatives	$ 0	$ 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Accounts Payable and Accrued Liabilities	Accounts Payable and Accrued Liabilities
Derivative Asset	$ 2	$ 102
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Assets	Assets
Fund Portfolio | Fund V | Interest Rate Caps | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 39,673
Derivative Effective Date	2024-02
Derivative Maturity Date	2025-01
Fund Portfolio | Fund V | Interest Rate Caps | Other Assets
Derivatives, Fair Value [Line Items]
Aggregate Notional Amount	$ 32,200
Fund Portfolio | Fund V | Interest Rate Caps | Minimum | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Strike Rate	4.50%
Fund Portfolio | Fund V | Interest Rate Caps | Minimum | Other Assets
Derivatives, Fair Value [Line Items]
Derivative Effective Date	2023-08
Derivative Maturity Date	2025-09
Strike Rate	5.00%
Fund Portfolio | Fund V | Interest Rate Caps | Maximum | Accounts payable and other liabilities
Derivatives, Fair Value [Line Items]
Strike Rate	4.50%
Fund Portfolio | Fund V | Interest Rate Caps | Maximum | Other Assets
Derivatives, Fair Value [Line Items]
Strike Rate	5.00%