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Agreements and Transactions with Related Parties - Other Related Party (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025 USD ($) entity shares	Mar. 31, 2024 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) property loan	Dec. 31, 2024 USD ($)
Agreements and Transactions with Related Parties
Due from related party	$ 9,605					$ 12,792
Due to related party	1,458					$ 4,474
Other Related Party Transactions | Related Party
Agreements and Transactions with Related Parties
Reimbursement for flights chartered by the company's executives	$ 300	$ 300
Other Related Party Transactions | Related Party | ACM Acquisition | ACM
Agreements and Transactions with Related Parties
Number of shares held by related party (in shares) | shares	2,535,870
Number of operating units held by related party (in shares) | shares	10,483,930
Aggregate percentage of voting power held by related party	6.20%
Other Related Party Transactions | Related Party | Maturity Date Of June 2021 | Bridge loans
Agreements and Transactions with Related Parties
Number of bridge loans originated | loan					12
Principal amount					$ 280,500
Number of multifamily properties renovated | property					72
Other Related Party Transactions | Related Party | Maturity date of March 2030 | Private Label | Lexford Portfolio
Agreements and Transactions with Related Parties
Fixed rate of interest			3.30%
Other Related Party Transactions | Related Party | Maturity date December 2029 | Bridge loans | Lexford Portfolio
Agreements and Transactions with Related Parties
Maximum exposure under guaranty	$ 400,000
Other Related Party Transactions | Chief executive officer
Agreements and Transactions with Related Parties
Percentage of our former manager's outstanding membership interest of related party in another related party	35.00%
Other Related Party Transactions | Chief executive officer | Minimum
Agreements and Transactions with Related Parties
Ownership percentage limit of our common stock under company charter	5.00%
Other Related Party Transactions | Director
Agreements and Transactions with Related Parties
Number of Kaufman entities | entity	2
Lexford Portfolio | Other Related Party Transactions | Related Party
Agreements and Transactions with Related Parties
Management fee, percentage of gross revenues of underlying properties	4.75%
Lexford Portfolio | Other Related Party Transactions | Related Party | Maturity Date Of June 2021 | Bridge loans
Agreements and Transactions with Related Parties
Base spread, percentage					4.00%
Payoffs and partial paydowns of principal				$ 250,000
Unsecured financing provided by an unsecured lender to certain parent entities of the property owners					$ 50,000
Lexford Portfolio | Other Related Party Transactions | Related Party | Maturity date of March 2030 | Private Label
Agreements and Transactions with Related Parties
Principal amount			$ 34,600

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Numbers of operating partnership units issued or issuable in consideration for the business combination.

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The number of multifamily properties renovated.

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The amount of reimbursements made to related party during the period for flights chartered by the company's executives.

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Amount of decrease in investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from collection of principal.

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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Amount due from parties in nontrade transactions, classified as other.

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