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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of credit loss expense (reversal of expense) for financing receivable.

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Investments in Equity Affiliates - All Investments (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($) item	Dec. 31, 2020 USD ($)	Dec. 31, 2015 USD ($)	Mar. 31, 2022 USD ($)
Investment in Equity Affiliates
Income from equity affiliates	$ 14,247	$ 34,567	$ 76,161
Indirect ownership percentage	9.20%
Amount of provision for credit losses	$ 19,318	(24,315)	59,966
Noncontrolling interest invested	17,809	48,071	892
Arbor Residential Investor LLC
Investment in Equity Affiliates
Income from equity affiliates	4,900	34,600	75,700
Distribution received	$ 23,800	28,000
Indirect ownership percentage	12.30%
Percentage of ownership interest of related party in the entity				50.00%
Equity Investment				$ 9,600
Arbor Residential Investor LLC \| Wakefield Investment Holdings Llc
Investment in Equity Affiliates
Percentage of ownership interest of related party in the entity				50.00%
Residential mortgage banking business
Investment in Equity Affiliates
Indirect ownership percentage				65.00%
AMAC III
Investment in Equity Affiliates
Income from equity affiliates	$ 2,400	1,300	900
Investment in real estate committed		$ 30,000
Investment in real estate	25,200
Interest in a real estate investment (as a percent)		18.00%
Distribution from investment classified as return capital	500	$ 3,800
Contributions made	4,900	8,600
Fifth Wall
Investment in Equity Affiliates
Investment in real estate committed		$ 25,000
Investment in real estate	15,200
Interest in a real estate investment (as a percent)		7.60%
Number of investments \| item		2
Distribution from investment classified as return capital	1,600
Contributions made	9,700	$ 5,400
North Vermont Avenue
Investment in Equity Affiliates
Noncontrolling interest in equity method investment (as a percent)		85.00%
Other-than-temporary impairment recorded	2,400
Noncontrolling interest invested		$ 2,400
Lightstone Value Plus REIT L.P.
Investment in Equity Affiliates
Equity Investment	1,900
Docsumo Pte. Ltd.
Investment in Equity Affiliates
Noncontrolling interest	$ 500
JT Prime
Investment in Equity Affiliates
Noncontrolling interest in equity method investment (as a percent)	50.00%
Equity Investment	$ 400
West Shore Cafe
Investment in Equity Affiliates
Provided first mortgage loan to an affiliated entity	$ 1,700
Other-than-temporary impairment recorded			2,200
Amount of provision for credit losses			1,700
Ownership interest (as a percent)	50.00%
Variable rate, spread (as a percent)	4.00%
Lexford Portfolio
Investment in Equity Affiliates
Distribution received	$ 11,100		$ 1,100
Noncontrolling interest	100
East River Portfolio
Investment in Equity Affiliates
Equity investment made	$ 100
Ownership interest (as a percent)	5.00%
Number of properties owned \| item	2
East River Portfolio \| Chief executive officer and other related parties
Investment in Equity Affiliates
Percentage of ownership interest of related party in the entity	95.00%
Equity Participation Interest
Investment in Equity Affiliates
Proceeds from sale					$ 2,600