Investment Securities Available For Sale, at Fair Value - Narrative (Details) - USD ($) |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
Dec. 31, 2024 |
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| Debt Securities, Available-for-sale [Line Items] | |||||
| Accrued interest | $ 32,200,000 | $ 32,200,000 | $ 22,400,000 | ||
| Unrealized gains on investment securities available for sale | 47,800,000 | $ 58,300,000 | 148,800,000 | $ 10,400,000 | |
| Sales proceeds | $ 0 | 0 | 663,336,000 | 0 | |
| Realized loss on write-downs | $ (26,818,000) | ||||
| Contractual maturities (up to) | 38 years | ||||
| Weighted average life of available for sale securities portfolio | 6 years 6 months | 7 years 4 months 24 days | |||
| Agency RMBS IOs | |||||
| Debt Securities, Available-for-sale [Line Items] | |||||
| Realized loss on write-downs | $ (2,500,000) | ||||
| Non-Agency RMBS | |||||
| Debt Securities, Available-for-sale [Line Items] | |||||
| Sales proceeds | 4,573,000 | ||||
| Realized loss on write-downs | $ (400,000) | $ 52,000 | $ (900,000) | ||
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- Definition Represents the weighted average life of the available for sale securities portfolio. No definition available.
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- Definition Contractual maturities of investments. No definition available.
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- Definition Proceeds Including Receivable For Unsettled Trades From Sale of Debt Securities, Available-for-sale No definition available.
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- Definition Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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