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Agreements and Transactions with Related Parties - 2020 Activity (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2026 USD ($) property	Mar. 31, 2025 USD ($)	Dec. 31, 2020 USD ($) property	Dec. 31, 2025 property
Agreements and Transactions with Related Parties
Number of real estate properties | property	36			35
Interest income	$ 235,047	$ 240,693
Multifamily
Agreements and Transactions with Related Parties
Number of real estate properties | property	32			31
Multifamily | Mezzanine Loans | Other Related Party Transactions | Related Party
Agreements and Transactions with Related Parties
Interest income	$ 100	$ 100
Maturity Date April 2030 | Bridge loan, two multifamily properties | Other Related Party Transactions | Related Party
Agreements and Transactions with Related Parties
Principal amount			$ 14,800
Percentage of ownership interest of related party in the entity			50.00%
Maturity Date April 2030 | Mezzanine Loans | Other Related Party Transactions | Related Party
Agreements and Transactions with Related Parties
Fixed rate of interest			9.00%
Maturity Date April 2030 | Multifamily | Other Related Party Transactions | Related Party
Agreements and Transactions with Related Parties
Number of real estate properties | property			2
Maturity Date April 2030 | Multifamily | Preferred equity investments | Other Related Party Transactions | Related Party
Agreements and Transactions with Related Parties
Equity investment			$ 3,400

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