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Securities - Additional Information (Detail) - USD ($) | 9 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023
Debt Securities, Available-for-Sale [Line Items] |  |
Proceeds from sales of available for sale securities | $ 0 | $ 0
Avaliable for sale of debt securities realized gains or losses | $ 0 | $ 0

X
- Definition Amount of realized gain (loss) 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/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 + Details
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