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Investment Securities - Allowance for Credit Losses on Held-to-Maturity (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items] |  |  |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | $ 1,500 | [1] | $ 1,500 | $ 1,500
Debt Securities, Held-to-maturity, Credit Loss Expense (Reversal) | 0 |  | 0 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Writeoff | 0 |  | 0 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Recovery | 0 |  | 0 |
US States and Political Subdivisions Debt Securities [Member] |  |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 140 |  | 140 | 140
Debt Securities, Held-to-maturity, Credit Loss Expense (Reversal) | 0 |  | 0 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Writeoff | 0 |  | 0 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Recovery | 0 |  | 0 |
Corporate Debt Securities [Member] |  |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Excluding Accrued Interest | 1,360 |  | 1,360 | $ 1,360
Debt Securities, Held-to-maturity, Credit Loss Expense (Reversal) | 0 |  | 0 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Writeoff | 0 |  | 0 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss, Recovery | $ 0 |  | $ 0 |
[1] | Excludes accrued interest receivable of $13.4 million at December 31, 2024 which is recorded in "Other assets" on the consolidated balance shee

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- Definition Amount, excluding accrued interest, of allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 + Details
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- Definition Amount of increase in allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity), from recovery. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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- Definition Amount of writeoff of investment in debt security, measured at amortized cost (held-to-maturity), charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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- Definition Amount of expense (reversal of expense) for expected credit loss on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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