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Fair Value of Financial Instruments - Valuation for Level 3 Assets (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance at beginning of period | $ 3,327,211 | $ 3,801,370
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract] |  |
Included in earnings | (9,009) | 54,963
Transfers out | (21,066) | (326)
Transfers to securitization trust, net | 0 | 0
Funding/Contributions |  | 21,948
Paydowns/Distributions | (241,006) | (294,927)
Sales | (28,912) | (166)
Purchases | 305,735 | 88,521
Balance at the end of period | $ 3,332,953 | $ 3,671,383
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
Residential loans |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance at beginning of period | $ 827,535 | $ 1,081,384
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract] |  |
Included in earnings | (2,924) | (599)
Transfers out | (18,180) | (93)
Transfers to securitization trust, net | (370,804) | (86,110)
Funding/Contributions |  | 0
Paydowns/Distributions | (62,718) | (141,355)
Sales | (22,204) | (166)
Purchases | 290,024 | 67,939
Balance at the end of period | 640,729 | 921,000
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 | 754,860 | 827,582
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract] |  |
Included in earnings | (138) | 15,121
Transfers out | 0 | 0
Transfers to securitization trust, net | 0 | 0
Funding/Contributions |  | 0
Paydowns/Distributions | (16,596) | (13,550)
Sales | 0 | 0
Purchases | 0 | 0
Balance at the end of period | 738,126 | 829,153
Residential loans held in securitization trusts |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance at beginning of period | 1,501,908 | 1,616,114
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract] |  |
Included in earnings | (1,773) | 33,041
Transfers out | (2,886) | (233)
Transfers to securitization trust, net | 370,804 | 86,110
Funding/Contributions |  | 0
Paydowns/Distributions | (152,806) | (130,911)
Sales | (6,708) | 0
Purchases | 15,711 | 20,582
Balance at the end of period | 1,724,250 | 1,624,703
Multi-family loans |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance at beginning of period | 95,792 | 87,534
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract] |  |
Included in earnings | (2,137) | 2,889
Transfers out | 0 | 0
Transfers to securitization trust, net | 0 | 0
Funding/Contributions |  | 6,420
Paydowns/Distributions | (1,750) | (1,534)
Sales | 0 | 0
Purchases | 0 | 0
Balance at the end of period | 91,905 | 95,309
Equity investments |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance at beginning of period | 147,116 | 179,746
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract] |  |
Included in earnings | (2,037) | 3,451
Transfers out | 0 | 0
Transfers to securitization trust, net | 0 | 0
Funding/Contributions |  | 15,528
Paydowns/Distributions | (7,136) | (7,577)
Sales | 0 | 0
Purchases | 0 | 0
Balance at the end of period | $ 137,943 | 191,148
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 |  | 9,010
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings [Abstract] |  |
Included in earnings |  | 1,060
Transfers out |  | 0
Transfers to securitization trust, net |  | 0
Funding/Contributions |  | 0
Paydowns/Distributions |  | 0
Sales |  | 0
Purchases |  | 0
Balance at the end of period |  | $ 10,070

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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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