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v3.23.3

Investment Securities Available For Sale, at Fair Value - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Accrued interest | $ 8,000,000 |  | $ 8,000,000 |  | $ 400,000
Unrealized losses and reversal of gains on investments | 30,500,000 | $ 17,400,000 | $ 38,200,000 | $ 20,500,000 |
Contractual maturities (up to) |  |  | 36 years |  |
Weighted average life of available for sale securities portfolio |  |  | 7 years |  | 7 years 7 months 6 days
Allowance for credit loss | 0 |  | $ 0 |  | $ 0
Debt securities, allowance for credit loss, period increase (decrease) | $ 0 | 0 | $ 0 | 0 |
ABS |  |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |  |
Unrealized losses and reversal of gains on investments |  | $ 15,900,000 |  | $ 15,900,000 |

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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). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2A -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-3A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-3B + Details
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