Equity Investments, at Fair Value - Schedule of Income From Multi-Family Preferred Equity Ownership Interests (Details) - Multi-Family Preferred Equity Ownership Interests - Equity investments - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	$ 5,951	$ 5,775
1122 Chicago DE, LLC
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	251	237
Bighaus, LLC
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	537	465
FF/RMI 20 Midtown, LLC
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	799	798
Palms at Cape Coral, LLC
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	177	155
America Walks at Port St. Lucie, LLC
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	1,126	902
EHOF-NYMT Sunset Apartments Preferred, LLC
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	625	549
Lucie at Tradition Holdings, LLC
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	684	601
Syracuse Apartments and Townhomes, LLC
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	654	516
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)
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	301	0
Tides on 27th Investors, LLC
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	797	0
DCP Gold Creek, LLC
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	0	853
Rigsbee Ave Holdings, LLC
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	0	(174)
Walnut Creek Properties Holdings, L.L.C.
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	0	(153)
Lurin-RMI, LLC
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	0	280
Somerset Deerfield Investor, LLC
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	0	587
RS SWD Owner, LLC, RS SWD Mitchell Owner, LLC, RS SWD IF Owner, LLC, RS SWD Mullis Owner, LLC, RS SWD JH Mullis Owner, LLC and RS SWD Saltzman Owner, LLC (collectively)
Schedule of Equity Method Investments [Line Items]
Change in fair value, gain (loss)	$ 0	$ 159