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Investments in Equity Affiliates - Narrative (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Apr. 30, 2024 USD ($) | Apr. 30, 2023 USD ($) | Dec. 31, 2024 USD ($) property | Jun. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) investment | Dec. 31, 2024 USD ($) parcel property item unit | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2021 USD ($)
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Indirect ownership percentage |  |  |  |  |  |  | 9.20% |  |  |  |
Income (loss) from equity method investments |  |  |  |  |  |  | $ 5,772 | $ 24,281 | $ 14,247 |  |
Noncontrolling interest invested |  |  |  |  |  |  | 19,593 | 18,986 | 17,809 |  |
Bridge loans, total UPB |  |  |  |  |  |  | 611,696 | 427,929 |  |  |
Number of investments purchased | investment |  |  |  |  |  | 4 |  |  |  |  |
Loans to affiliates, balance |  |  | $ 167,393 |  |  |  | 167,393 |  |  |  |
Distributions from equity affiliates |  |  |  |  |  |  | 11,224 | 15,552 | 26,008 |  |
Interest income |  |  |  |  |  |  | 1,167,872 | 1,331,219 | 948,401 |  |
Upsized amount |  |  |  |  |  | $ 140,000 |  |  |  |  |
Amount of provision for credit losses |  |  |  |  |  |  | $ 55,512 | 68,805 | 19,318 |  |
Houston Properties |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of real estate | $ 101,300 | $ 239,400 |  |  |  |  |  |  |  |  |
Bridge Loans |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Bridge loans, total UPB | $ 100,300 |  |  |  |  | 100,300 |  |  |  |  |
Bridge Loans | Houston Properties |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Bridge loans, total UPB |  |  | 73,300 |  |  |  |  |  |  |  |
Variable rate, spread (as a percent) | 3.00% |  |  |  |  |  |  |  |  |  |
Bridge Loans | Houston Properties | Unconsolidated VIEs |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Short-term debt | $ 95,300 |  |  |  |  |  |  |  |  |  |
Capital Partner | AWC Real Estate Opportunity Partners I LP |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Subsidiary, non-controlling limited partnership interest |  |  |  | 51.00% |  |  |  |  |  |  |
General partnership, ownership interest |  |  |  | 17.50% |  |  |  |  |  |  |
ARSR DPREF I LLC |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds from issued debt |  |  |  |  |  | 10,200 |  |  |  |  |
Related Party |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership interest of related party in the entity |  |  |  |  |  |  | 50.00% |  |  |  |
Related Party | Other Related Party Transactions |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Income (loss) from equity method investments |  |  |  |  |  |  | $ 9,000 | 12,200 |  |  |
Contributions made |  |  |  |  |  |  |  |  |  |  | $ 4,200
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 (loss) from equity method investments |  |  |  |  |  |  | $ (1,200) | 600 | 4,900 |  |
Distribution received |  |  |  |  |  |  | 7,700 | 15,000 |  |  |
Loans to affiliates, balance |  |  | 0 |  |  |  | $ 0 |  |  |  |
Arbor Residential Investor LLC | Related Party |  |  |  |  |  |  |  |  |  |  |
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 (loss) from equity method investments |  |  |  |  |  |  | $ (2,300) | (1,900) | $ (2,400) |  |
Investment in real estate committed |  |  |  |  |  |  | $ 30,000 |  |  |  |
Interest in a real estate investment (as a percent) |  |  |  |  |  |  | 18.00% |  |  |  |
Contributions made |  |  | 4,100 |  |  | 700 | $ 4,100 | 700 |  |  |
Distribution from investment classified as return capital |  |  |  |  |  |  |  | 1,100 |  |  |
Loans to affiliates, balance |  |  | 35,410 |  |  |  | 35,410 |  |  |  |
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 |  |  | 1,100 |  |  | 1,000 | $ 1,100 | 1,000 |  |  |
Number of investments | item |  |  |  |  |  |  | 2 |  |  |  |
Gain (loss) on investment |  |  |  |  |  |  | $ 100 | (1,200) |  |  |
Loans to affiliates, balance |  |  | $ 0 |  |  |  | 0 |  |  |  |
AWC Real Estate Opportunity Partners I LP |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Income (loss) from equity method investments |  |  |  |  |  |  | (500) |  |  |  |
Investment in real estate committed |  |  |  |  |  | 24,000 |  |  |  |  |
Interest in a real estate investment (as a percent) |  |  | 99.00% |  |  |  |  |  |  |  |
Investment in real estate |  |  |  |  |  | 11,700 |  | 11,700 |  |  |
Affiliate loans, maximum committed amount |  |  |  |  |  | $ 900 |  |  |  |  |
General partnership interest |  |  |  |  |  | 0.01 |  |  |  |  |
Loan to affiliate, funded amount |  |  | $ 300 |  |  |  | $ 300 |  |  |  |
Ownership interest (as a percent) |  |  | 49.00% |  |  |  | 49.00% |  |  |  |
Payments for investments, legal, and administrative expenses |  |  |  |  |  | $ 14,300 |  |  |  |  |
Loans to affiliates, balance |  |  | $ 108,450 |  |  | 13,200 | $ 108,450 | 13,200 |  |  |
Distributions from equity affiliates |  |  |  |  |  |  | 11,200 |  |  |  |
Noncontrolling interest |  |  |  |  |  |  | 13,600 |  |  |  |
Interest income |  |  |  |  |  |  | 5,400 |  |  |  |
AWC Real Estate Opportunity Partners I LP | Federal National Mortgage Association (FNMA) |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loans to affiliates, balance |  |  |  |  |  | 13,000 |  | $ 13,000 |  |  |
AWC Real Estate Opportunity Partners I LP | AWC Real Estate Opportunity Partners I LP |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  |  | 49.00% |  |  |  |  |  |  |
AWC Real Estate Opportunity Partners I LP | Capital Partner |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Investment in real estate committed |  |  |  | $ 25,000 |  |  |  |  |  |  |
Loan to affiliate, funded amount |  |  | 16,300 |  |  |  | 16,300 |  |  |  |
North Vermont Avenue |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest invested |  |  |  |  |  |  | $ 2,400 |  |  |  |
Equity method investments sold |  |  |  |  |  | 1,300 |  |  |  |  |
Noncontrolling interest in equity method investment (as a percent) |  |  |  |  |  |  | 85.00% |  |  |  |
Other-than-temporary impairment recorded |  |  |  |  |  |  | $ 2,400 |  |  |  |
Number of land parcels acquired | parcel |  |  |  |  |  |  | 3 |  |  |  |
Multifamily complex, number of units | unit |  |  |  |  |  |  | 202 |  |  |  |
North Vermont Avenue | Newly Formed Entity |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity method investments sold |  |  |  |  |  | $ 1,300 |  |  |  |  |
Newly Formed Entity | AWC Real Estate Opportunity Partners I LP |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  |  |  |  | 44.00% |  | 44.00% |  |  |
Noncontrolling interest invested |  |  |  |  |  | $ 9,400 |  |  |  |  |
ARSR DPREF I LLC |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on investment |  |  |  |  |  |  | $ 700 |  |  |  |
Ownership interest (as a percent) |  |  |  |  |  | 50.00% |  | 50.00% |  |  |
Loans to affiliates, balance |  |  | 0 |  |  |  | 0 |  |  |  |
Distributions from equity affiliates |  |  |  |  |  |  | 400 |  |  |  |
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 |  |  |  |
Loans to affiliates, balance |  |  | 0 |  |  |  | 0 |  |  |  |
The Park at Via Terrossa |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  |  |  | 5.00% |  |  |  |  |  |
Loans to affiliates, balance |  |  | 21,845 |  |  |  | 21,845 |  |  |  |
The Park at Via Terrossa | Other Related Party Transactions |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Distribution from investment classified as return capital |  |  |  |  | $ 600 |  |  |  |  |  |
JT Prime |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity investment |  |  | 400 |  |  |  | 400 |  |  |  |
Loans to affiliates, balance |  |  | 0 |  |  |  | $ 0 |  |  |  |
Noncontrolling interest in equity method investment (as a percent) |  |  |  |  |  |  | 50.00% |  |  |  |
Docsumo Pte. Ltd. |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loans to affiliates, balance |  |  | $ 0 |  |  |  | $ 0 |  |  |  |
Noncontrolling interest |  |  |  |  |  |  | $ 500 |  |  |  |
West Shore Café |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  | 50.00% |  |  |  | 50.00% |  |  |  |
Variable rate, spread (as a percent) |  |  |  |  |  |  | 4.00% |  |  |  |
Loans to affiliates, balance |  |  | $ 1,688 |  |  |  | $ 1,688 |  |  |  |
Loans to affiliates |  |  |  |  |  |  | $ 1,700 |  |  |  |
Other-than-temporary impairment recorded |  |  |  |  |  |  |  |  |  | $ 2,200 |
Amount of provision for credit losses |  |  |  |  |  |  |  |  |  | $ 1,700 |
West Shore Café | 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 |  |  |  |  |  |  | $ 9,000 | 12,200 |  |  |
Gain (loss) on investment |  |  |  |  |  |  | 9,000 | 12,200 |  |  |
Loans to affiliates, balance |  |  | $ 0 |  |  |  | 0 |  |  |  |
Noncontrolling interest |  |  |  |  |  |  | $ 100 |  |  |  |
East River Portfolio |  |  |  |  |  |  |  |  |  |  |
Investments in and Advances to Affiliates [Line Items] |  |  |  |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  | 5.00% |  |  |  | 5.00% |  |  |  |
Loans to affiliates, balance |  |  | $ 0 |  |  |  | $ 0 |  |  |  |
Equity investment made |  |  |  |  |  |  | $ 100 |  |  |  |
Number of properties owned | property |  |  | 2 |  |  |  | 2 |  |  |  |
East River Portfolio | Related Party |  |  |  |  |  |  |  |  |  |  |
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 |  |  |

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