Net Interest (Expense) Income - Summary of Net Interest (Expense) Income (Detail) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Interest income: | ||||
| Cash and short-term investments | $ 4,123 | $ 5,694 | $ 13,606 | $ 16,955 |
| Mortgage-backed securities | 30,222 | 69,908 | 137,313 | 182,903 |
| Loans held for sale | 46,820 | 33,100 | 129,884 | 102,252 |
| Loans held for investment | 186,214 | 67,160 | 480,550 | 151,533 |
| Deposits securing CRT arrangements | 8,315 | 11,125 | 25,688 | 34,201 |
| Placement fees relating to custodial funds | 37,959 | 42,306 | 104,548 | 112,071 |
| Other | 749 | 795 | 3,154 | 2,745 |
| Interest income | 314,402 | 230,088 | 894,743 | 602,660 |
| Interest expense: | ||||
| Assets sold under agreements to repurchase | 95,883 | 88,587 | 275,351 | 254,071 |
| Mortgage loan participation purchase and sale agreements | 31 | 55 | 94 | 375 |
| Notes payable secured by credit risk transfer and mortgage servicing assets | 44,943 | 51,465 | 131,614 | 160,524 |
| Unsecured senior notes | 15,958 | 18,010 | 52,223 | 47,610 |
| Asset-backed financings | 202,989 | 65,409 | 479,383 | 140,573 |
| Interest shortfall on repayments of loans serviced for Agency securitizations | 2,063 | 2,405 | 10,209 | 6,289 |
| Interest on loan impound deposits | 2,090 | 2,235 | 5,353 | 5,149 |
| Other | 333 | 228 | 1,158 | 1,089 |
| Interest expense, total | 364,290 | 228,394 | 955,385 | 615,680 |
| Net interest (expense) income | $ (49,888) | $ 1,694 | $ (60,642) | $ (13,020) |
| X | ||||||||||
- Definition Represents interest expense relating to bonds issued to non-affiliates secured by mortgage loans held in a consolidated VIE. No definition available.
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- Definition Interest and fee income from mortgage loans considered to be held-for-investment. No definition available.
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- Definition Represents the interest expense related to mortgage loans participation purchase and sale agreement. No definition available.
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- Definition Interest expense notes payable secured by credit risk transfer and mortgage servicing assets. No definition available.
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- Definition Represents interest expense incurred by the company paid to borrowers' impound accounts relating to borrower funds held in escrow to pay hazard insurance and property taxes on the properties securing the mortgage loans. No definition available.
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- Definition Represents interest incurred relating to mortgage-backed securities secured by mortgage loans in the company's loan servicing portfolio whereby the underlying loans prepaid during the period and the company as servicer of the mortgage-backed security is obligated to pass through the interest for the entire month and the borrower is only required to pay interest through the date of payoff during the month. No definition available.
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- Definition Interest income (expense) other. No definition available.
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- Definition Interest income on mortgage loans subject to deposits securing credit risk transfer agreements. No definition available.
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- Definition Interest income on mortgage loans subject to placement fees relating to custodial funds. No definition available.
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- Definition Unsecured senior notes interest expense. No definition available.
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- References No definition available.
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| X | ||||||||||
- Definition Interest and fee income from mortgage loans considered to be held-for-sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount of interest expense classified as operating. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of interest expense classified as other. No definition available.
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| X | ||||||||||
- Definition Gross expenses on securities sold coupled with an agreement to repurchase the same from the same counterparty at a fixed or determinable price within a fixed or variable time period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Interest earned on deposits in United States money market accounts and other United States interest earning accounts. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of interest income (expense) classified as operating. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of operating interest income, including, but not limited to, amortization and accretion of premiums and discounts on securities. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of operating interest income, including amortization and accretion of premiums and discounts, on securitized, pass-through debt securities collateralized by real estate mortgage loans. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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