Available-for-Sale Securities, at Fair Value (Details) - USD ($) $ in Thousands |
Mar. 31, 2022 |
Dec. 31, 2021 |
|---|---|---|
| Debt Securities, Available-for-sale [Line Items] | ||
| Available-for-sale securities, at fair value | $ 6,970,718 | $ 7,161,703 |
| Federal National Mortgage Association Certificates and Obligations (FNMA) [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Available-for-sale securities, at fair value | 5,191,909 | 5,040,988 |
| Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Available-for-sale securities, at fair value | 1,604,687 | 1,922,809 |
| Government National Mortgage Association Certificates and Obligations (GNMA) [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Available-for-sale securities, at fair value | 161,592 | 185,602 |
| Mortgage-backed Securities, Issued by Private Enterprises [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Available-for-sale securities, at fair value | $ 12,530 | $ 12,304 |
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- Definition Amount of 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 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. No definition available.
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