Investments in and Advances to Unconsolidated Affiliates - Core Portfolio - Additional Information (Details) - USD ($) $ in Thousands		Dec. 31, 2023	Jan. 31, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Investments carried at fair value or cost	[1]	$ 4,554		$ 4,315
Mervyns II
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage			40.00%
Core Portfolio | Fifth Wall Ventures Retail Fund, L.P.
Schedule of Equity Method Investments [Line Items]
Investments carried at fair value or cost				$ 200

[1] Includes cost-method investment in Fifth Wall and other investments.