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Fair Value of Financial Instruments - Schedule of Valuation for Level 3 Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of period | $ 3,332,953 | $ 3,671,383 | $ 3,327,211 | $ 3,801,370
Total gains/(losses) (realized/unrealized) |  |  |  |
Included in earnings | 6,827 | (22,424) | (2,182) | 32,539
Transfers out | (23,705) | (4,168) | (44,771) | (4,494)
Transfers to securitization trust, net | 0 | 0 | 0 | 0
Funding/Contributions |  | 8,985 |  | 30,933
Paydowns/Distributions | (279,691) | (348,917) | (520,697) | (643,844)
Sales | (3,006) | (441) | (31,918) | (607)
Purchases (3) | 705,725 | 106,266 | 1,011,460 | 194,787
Balance at the end of period | $ 3,739,103 | $ 3,410,684 | $ 3,739,103 | $ 3,410,684
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Operating Income (Expense), Net | Other Operating Income (Expense), Net | Other Operating Income (Expense), Net | Other Operating Income (Expense), Net
Residential loans |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of period | $ 640,729 | $ 921,000 | $ 827,535 | $ 1,081,384
Total gains/(losses) (realized/unrealized) |  |  |  |
Included in earnings | 4,081 | 772 | 1,157 | 173
Transfers out | (22,821) | (2,664) | (41,001) | (2,757)
Transfers to securitization trust, net | (262,479) | (103,972) | (633,283) | (190,082)
Funding/Contributions |  | 0 |  | 0
Paydowns/Distributions | (83,738) | (144,017) | (146,456) | (285,372)
Sales | (3,006) | 0 | (25,210) | (166)
Purchases (3) | 394,452 | 86,145 | 684,476 | 154,084
Balance at the end of period | 667,218 | 757,264 | 667,218 | 757,264
Residential loans | Consolidated SLST | VIE, Primary Beneficiary |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of period | 738,126 | 829,153 | 754,860 | 827,582
Total gains/(losses) (realized/unrealized) |  |  |  |
Included in earnings | (2,551) | (24,154) | (2,689) | (9,033)
Transfers out | 0 | 0 | 0 | 0
Transfers to securitization trust, net | 0 | 0 | 0 | 0
Funding/Contributions |  | 0 |  | 0
Paydowns/Distributions | (15,688) | (15,030) | (32,284) | (28,580)
Sales | 0 | 0 | 0 | 0
Purchases (3) | 285,057 | 0 | 285,057 | 0
Balance at the end of period | 1,004,944 | 789,969 | 1,004,944 | 789,969
Residential loans held in securitization trusts |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of period | 1,724,250 | 1,624,703 | 1,501,908 | 1,616,114
Total gains/(losses) (realized/unrealized) |  |  |  |
Included in earnings | (3,465) | (5,139) | (5,238) | 27,902
Transfers out | (884) | (1,504) | (3,770) | (1,737)
Transfers to securitization trust, net | 262,479 | 103,972 | 633,283 | 190,082
Funding/Contributions |  | 0 |  | 0
Paydowns/Distributions | (177,567) | (152,133) | (330,373) | (283,044)
Sales | 0 | (441) | (6,708) | (441)
Purchases (3) | 26,216 | 20,121 | 41,927 | 40,703
Balance at the end of period | 1,831,029 | 1,589,579 | 1,831,029 | 1,589,579
Multi-family loans |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of period | 91,905 | 95,309 | 95,792 | 87,534
Total gains/(losses) (realized/unrealized) |  |  |  |
Included in earnings | 2,654 | 3,440 | 517 | 6,329
Transfers out | 0 | 0 | 0 | 0
Transfers to securitization trust, net | 0 | 0 | 0 | 0
Funding/Contributions |  | 8,985 |  | 15,405
Paydowns/Distributions | (1,562) | (10,312) | (3,312) | (11,846)
Sales | 0 | 0 | 0 | 0
Purchases (3) | 0 | 0 | 0 | 0
Balance at the end of period | 92,997 | 97,422 | 92,997 | 97,422
Equity investments |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of period | 137,943 | 191,148 | 147,116 | 179,746
Total gains/(losses) (realized/unrealized) |  |  |  |
Included in earnings | 6,108 | 5,032 | 4,071 | 8,483
Transfers out | 0 | 0 | 0 | 0
Transfers to securitization trust, net | 0 | 0 | 0 | 0
Funding/Contributions |  | 0 |  | 15,528
Paydowns/Distributions | (1,136) | (27,425) | (8,272) | (35,002)
Sales | 0 | 0 | 0 | 0
Purchases (3) | 0 | 0 | 0 | 0
Balance at the end of period | $ 142,915 | 168,755 | $ 142,915 | 168,755
Equity investments in disposal group held for sale |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of period |  | 10,070 |  | 9,010
Total gains/(losses) (realized/unrealized) |  |  |  |
Included in earnings |  | (2,375) |  | (1,315)
Transfers out |  | 0 |  | 0
Transfers to securitization trust, net |  | 0 |  | 0
Funding/Contributions |  | 0 |  | 0
Paydowns/Distributions |  | 0 |  | 0
Sales |  | 0 |  | 0
Purchases (3) |  | 0 |  | 0
Balance at the end of period |  | $ 7,695 |  | $ 7,695

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