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Investments in Equity Affiliates - Narrative (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2023 USD ($) item	Dec. 31, 2023 USD ($) item	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2018 USD ($)
Investments in and Advances to Affiliates [Line Items]
Indirect ownership percentage		9.20%
Income from equity affiliates		$ 24,281	$ 14,247	$ 34,567
Upsized amount	$ 140,000
Amount of provision for credit losses		68,805	19,318	(24,315)
Noncontrolling interest invested		$ 18,986	17,809	48,071
ARSR DPREF I LLC
Investments in and Advances to Affiliates [Line Items]
Proceeds from issued debt	10,200
ACM
Investments in and Advances to Affiliates [Line Items]
Percentage of ownership interest of related party in the entity		50.00%
Arbor Residential Investor LLC
Investments in and Advances to Affiliates [Line Items]
Equity investment	9,600	$ 9,600
Percentage of ownership interest of related party in the entity		50.00%
Indirect ownership percentage		12.30%
Income from equity affiliates		$ 600	4,900	34,600
Distribution received		$ 15,000	23,800
Arbor Residential Investor LLC \| Wakefield Investment Holdings Llc
Investments in and Advances to Affiliates [Line Items]
Percentage of ownership interest of related party in the entity		50.00%
Residential Mortgage Banking Business
Investments in and Advances to Affiliates [Line Items]
Indirect ownership percentage		65.00%
AMAC Holdings III LLC
Investments in and Advances to Affiliates [Line Items]
Income from equity affiliates		$ 1,900	2,400	$ 1,300
Investment in real estate committed		$ 30,000
Interest in a real estate investment (as a percent)		18.00%
Contributions made	700	$ 700	4,900
Distribution from investment classified as return capital		1,100	500
Fifth Wall Ventures
Investments in and Advances to Affiliates [Line Items]
Investment in real estate committed		$ 25,000
Interest in a real estate investment (as a percent)		7.60%
Contributions made	1,000	$ 1,000	9,700
Distribution from investment classified as return capital			1,600
Number of investments \| item		2
Loss on investment		$ 1,200
AWC Real Estate Opportunity Partners I LP
Investments in and Advances to Affiliates [Line Items]
Investment in real estate committed	$ 24,000
Interest in a real estate investment (as a percent)	99.00%
Investment in real estate	$ 13,000	$ 13,000
Affiliate loans, maximum committed amount	900
North Vermont Avenue
Investments in and Advances to Affiliates [Line Items]
Equity method investments sold	$ 1,300
Noncontrolling interest in equity method investment (as a percent)		85.00%
Other-than-temporary impairment recorded		$ 2,400
Noncontrolling interest invested		$ 2,400
ARSR DPREF I LLC
Investments in and Advances to Affiliates [Line Items]
Ownership interest (as a percent)	50.00%	50.00%
Total contribution	$ 70,000	$ 70,000
Lightstone Value Plus REIT L.P.
Investments in and Advances to Affiliates [Line Items]
Equity investment	1,900	1,900
JT Prime
Investments in and Advances to Affiliates [Line Items]
Equity investment	$ 400	$ 400
Noncontrolling interest in equity method investment (as a percent)		50.00%
Docsumo Pte. Ltd.
Investments in and Advances to Affiliates [Line Items]
Noncontrolling interest			500
West Shore Café
Investments in and Advances to Affiliates [Line Items]
Ownership interest (as a percent)	50.00%	50.00%
Loans to affiliates		$ 1,700
Other-than-temporary impairment recorded					$ 2,200
Amount of provision for credit losses					$ 1,700
West Shore Café \| Secured Overnight Financing Rate (SOFR)
Investments in and Advances to Affiliates [Line Items]
Variable rate, spread (as a percent)		4.00%
West Shore Café \| Secured Overnight Financing Rate (SOFR) \| Minimum
Investments in and Advances to Affiliates [Line Items]
Variable rate, spread (as a percent)		0.15%
Lexford Portfolio
Investments in and Advances to Affiliates [Line Items]
Distribution received		$ 12,200	11,100
Noncontrolling interest		$ 100
East River Portfolio
Investments in and Advances to Affiliates [Line Items]
Ownership interest (as a percent)	5.00%	5.00%
Equity investment made		$ 100
Number of properties owned \| item	2	2
East River Portfolio \| Chief Executive Officer And Other Related Parties
Investments in and Advances to Affiliates [Line Items]
Percentage of ownership interest of related party in the entity		95.00%
Equity Participation Interest
Investments in and Advances to Affiliates [Line Items]
Proceeds from sale	$ 14,500	$ 14,500	$ 2,600