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Real Estate and Other Investments - Unconsolidated Joint Venture Narrative (Details) $ in Thousands		3 Months Ended		9 Months Ended
	Aug. 21, 2025 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) property	Sep. 30, 2024 USD ($)
Real Estate
Equity in net earnings (losses) of an investee				$ 9,652	$ (9,882)
Unconsolidated joint venture distributions				250	1,231
Corporate Joint Venture
Real Estate
Equity in net earnings (losses) of an investee		$ 1,869	$ 1,707	$ 5,661	$ (18,173)
Corporate Joint Venture | Seaport Innovation LLC
Real Estate
Cash distribution	$ 280,000
Corporate Joint Venture | The LSMD Fund REIT LLC
Real Estate
Equity method investment ownership percentage		20.00%		20.00%
Corporate Joint Venture | Seaport Innovation LLC
Real Estate
Equity method investment ownership percentage		10.00%		10.00%
Unconsolidated joint venture distributions	$ 28,000
Corporate Joint Venture | Medical Office Building and Life Science Building
Real Estate
Number of properties included in joint venture agreement | property				10

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