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Investment Securities - Narratives (Details) | Mar. 31, 2024 USD ($) security | Dec. 31, 2023 USD ($)
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Investment Securities |  |
Number of securities in a continuous loss position | 63 |
Percentage of individual securities' amortized cost basis | 14.30% |
Percentage of total amortized cost basis of the investment securities portfolio | 13.70% |
Number of securities in a continuous loss position for over 12 months | 60 |
Allowance for credit losses for available-for-sale securities | $ | $ 0 | $ 0

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- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without an allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-4 + Details
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