Investments in Real Estate Debt - Schedule of Mortgage Loans by Property Type and Geographic Distribution (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 698,045	$ 302,868
Percentage of portfolio	100.00%	100.00%
Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 323,941	$ 110,670
Percentage of portfolio	46.40%	36.60%
Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 99,761	$ 91,292
Percentage of portfolio	14.30%	30.10%
Hotel
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 94,507	$ 48,795
Percentage of portfolio	13.50%	16.10%
Data Center
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 102,314	$ 40,651
Percentage of portfolio	14.70%	13.40%
Self-Storage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 39,350	$ 8,884
Percentage of portfolio	5.60%	2.90%
Life Science
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 19,804
Percentage of portfolio	2.90%	0.00%
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 18,368	$ 2,576
Percentage of portfolio	2.60%	0.90%
Northeast
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 256,310	$ 169,829
Percentage of portfolio	36.70%	56.10%
West
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 186,270	$ 32,841
Percentage of portfolio	26.70%	10.80%
Mid-Atlantic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 109,590	$ 44,166
Percentage of portfolio	15.70%	14.60%
Southwest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 50,217	$ 18,400
Percentage of portfolio	7.20%	6.10%
Southeast
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 25,818	$ 27,582
Percentage of portfolio	3.70%	9.10%
Midwest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair Value	$ 69,840	$ 10,050
Percentage of portfolio	10.00%	3.30%