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Assets Purchased under Resale Agreements and Sold under Repurchase Agreements - Repurchase Agreements (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Amount of securities sold under repurchase agreements |  |  |  |  |  |
Gross repurchase agreements | $ 0 |  |  | $ 0 |  | $ 300,000,000
Extinguishment repurchase agreements, amount |  | $ 300,000,000 |  |  |  |
Repurchase agreements’ extinguishment cost |  |  | $ 0 | $ 3,900,000 | $ 0 |
Average rate paid | 5.51% |  | 2.81% | 4.32% | 2.73% |

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- Definition Extinguishment of Securities Sold Under Agreements To Repurchase, Amount + References No definition available. + Details
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- Definition Securities Sold Under Agreements To Repurchase, Charges Related to Extinguishment + References No definition available. + Details
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- Definition Average rate paid on securities sold under agreements to repurchase. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1402 -Paragraph (a) -Publisher SEC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1402 -Paragraph (b) -Subparagraph (3) -Publisher SEC + Details
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- Definition Amount, before effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483466/210-20-50-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483444/210-20-55-7 + Details
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