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v3.23.1

Subsequent Event (Details) $ in Thousands |  | 1 Months Ended | 3 Months Ended |
--- | --- | --- | --- | ---
May 04, 2023 USD ($) DebtSecurities FinancialInstitution | Apr. 30, 2023 FinancialInstitution | Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($) | Dec. 31, 2022 USD ($)
Debt Securities, Available-for-Sale [Abstract] |  |  |  |  |
Pre-tax loss on sale of AFS securities |  |  | $ (5,000) | $ (0) |
Aggregate amortized cost |  |  | 1,707,940 |  | $ 1,743,882
Estimated fair value |  |  | 1,512,008 |  | 1,527,225
Corporate [Member] |  |  |  |  |
Debt Securities, Available-for-Sale [Abstract] |  |  |  |  |
Aggregate amortized cost |  |  | 55,414 |  | 60,404
Estimated fair value |  |  | 47,237 |  | $ 54,240
Subordinated Debt Securities [Member] |  |  |  |  |
Debt Securities, Available-for-Sale [Abstract] |  |  |  |  |
Aggregate amortized cost |  |  | 7,000 |  |
Estimated fair value |  |  | $ 4,800 |  |
Subsequent Event [Member] | Subordinated Debt Securities [Member] |  |  |  |  |
Debt Securities, Available-for-Sale [Abstract] |  |  |  |  |
Number of subordinated debt securities sold | DebtSecurities | 2 |  |  |  |
Pre-tax loss on sale of AFS securities | $ 4,500 |  |  |  |
Number of regional financial institutions that issued debt securities | FinancialInstitution | 2 |  |  |  |
Number of issuers of debt securities whose debt ratings were downgraded | FinancialInstitution |  | 2 |  |  |

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- Definition Number of issuers that issued debt securities whose debt ratings were downgraded during the period. + References No definition available. + Details
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- Definition Amortized cost of 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 -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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