Equity Method Investments - Equity Method Investments Excluding the Managed Programs (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Investments in Programs
Equity Investments in Real Estate	$ 354,261	$ 327,502
Real Estate
Investments in Programs
Equity Investments in Real Estate	353,002	325,277
Real Estate | Third Party | Las Vegas Retail Complex | Affiliated Entity
Investments in Programs
Equity Investments in Real Estate	$ 235,979	196,352
Real Estate | Third Party | Johnson Self Storage | Affiliated Entity
Investments in Programs
Equity method investment, ownership (as a percent)	90.00%
Equity Investments in Real Estate	$ 63,934	65,707
Real Estate | Third Party | Kesko Senukai | Affiliated Entity
Investments in Programs
Equity method investment, ownership (as a percent)	70.00%
Equity Investments in Real Estate	$ 28,860	38,569
Real Estate | Third Party | Harmon Retail Corner | Affiliated Entity
Investments in Programs
Equity method investment, ownership (as a percent)	15.00%
Equity Investments in Real Estate	$ 24,229	$ 24,649