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Equity Investments, at Fair Value - Schedule of Equity Investments Accounted under the Equity Method (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Equity investments | Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Fair Value	$ 104,242	$ 152,246
Equity investments | Joint Venture Equity Investments in Multi-Family Properties
Schedule of Equity Method Investments [Line Items]
Fair Value	5,720	0
Equity investments | Single-Family Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Fair Value	37,154	27,500
Equity investments | Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Fair Value	$ 147,116	$ 179,746
Palms at Cape Coral, LLC | Equity investments | Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Ownership Interest	34.00%	34.00%
Fair Value	$ 5,832	$ 5,429
EHOF-NYMT Sunset Apartments Preferred, LLC | Equity investments | Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Ownership Interest	57.00%	57.00%
Fair Value	$ 19,703	$ 18,139
Lucie at Tradition Holdings, LLC | Equity investments | Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Ownership Interest	70.00%	70.00%
Fair Value	$ 19,442	$ 17,576
Syracuse Apartments and Townhomes, LLC | Equity investments | Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Ownership Interest	58.00%	58.00%
Fair Value	$ 21,642	$ 20,115
Hudson Bridge Apartments, LLC - Series A, Briar Hill Apartments, LLC, Kings Glen Apartments, LLC, Flagstone Apartments, LLC, Brookfield Apartments II, LLC - Series B, and Silber JBSM Properties, LLC (collectively) | Equity investments | Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Ownership Interest	58.00%	58.00%
Fair Value	$ 9,882	$ 9,277
Tides on 27th Investors, LLC | Equity investments | Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Ownership Interest	54.00%	0.00%
Fair Value	$ 17,937	$ 0
Rapid City RMI JV LLC | Equity investments | Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Ownership Interest	50.00%	0.00%
Fair Value	$ 9,804	$ 0
America Walks at Port St. Lucie, LLC | Equity investments | Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Ownership Interest	0.00%	62.00%
Fair Value	$ 0	$ 29,873
1122 Chicago DE, LLC | Equity investments | Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Ownership Interest	0.00%	53.00%
Fair Value	$ 0	$ 8,276
FF/RMI 20 Midtown, LLC | Equity investments | Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Ownership Interest	0.00%	51.00%
Fair Value	$ 0	$ 27,079
Bighaus, LLC | Equity investments | Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Ownership Interest	0.00%	42.00%
Fair Value	$ 0	$ 16,482
GWR Cedars Partners, LLC | Equity investments | Joint Venture Equity Investments in Multi-Family Properties
Schedule of Equity Method Investments [Line Items]
Ownership Interest	70.00%	0.00%
Fair Value	$ 1,897	$ 0
GWR Gateway Partners, LLC | Equity investments | Joint Venture Equity Investments in Multi-Family Properties
Schedule of Equity Method Investments [Line Items]
Ownership Interest	70.00%	0.00%
Fair Value	$ 3,823	$ 0
Constructive Loans, LLC
Schedule of Equity Method Investments [Line Items]
Option to purchase issued and outstanding interests, percentage	50.00%
Purchase of residential loans	$ 80,800	$ 260,600	$ 94,000
Constructive Loans, LLC | Equity investments | Single-Family Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Ownership Interest	50.00%	0.00%
Fair Value	$ 37,154	$ 27,500

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Amount of increase in financing receivable from purchase. Excludes net investment in lease.

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