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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 |  |

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