Real Estate and Other Investments - Mortgage Debt Joint Venture (Details)	3 Months Ended
Mar. 31, 2024 USD ($) property state option
Real Estate
Number of states in which properties are located \| state	36
Corporate Joint Venture
Real Estate
Interest rate (as a percent)	4.22%
Principal balance	$ 1,076,625,000
Corporate Joint Venture \| Seaport Innovation LLC
Real Estate
Aggregate principal amount of mortgage debt	$ 620,000,000
Seaport Innovation LLC \| Corporate Joint Venture \| Minimum
Real Estate
Interest rate (as a percent)	6.53%
Seaport Innovation LLC \| Corporate Joint Venture \| US Swap Rate
Real Estate
Basis points per annum (as a percent)	5.00%
Seaport Innovation LLC \| Corporate Joint Venture \| Massachusetts
Real Estate
Encumbered properties (property) \| property	1
Interest rate (as a percent)	3.53%
Principal balance	$ 620,000,000
The LSMD Fund REIT LLC \| Corporate Joint Venture
Real Estate
Encumbered properties (property) \| property	9
Number of states in which properties are located \| state	5
Interest rate (as a percent)	3.46%
Principal balance	$ 189,800,000
The LSMD Fund REIT LLC \| Corporate Joint Venture \| California
Real Estate
Encumbered properties (property) \| property	1
Interest rate (as a percent)	6.38%
Principal balance	$ 266,825,000
Number of extension options \| option	2
Extension term	1 year
The LSMD Fund REIT LLC \| Corporate Joint Venture \| California \| SOFR
Real Estate
Basis points per annum (as a percent)	1.90%
Initial premium	$ 1,200,000
The LSMD Fund REIT LLC \| Corporate Joint Venture \| California \| SOFR \| Interest Rate Cap
Real Estate
Basis points per annum (as a percent)	4.48%

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