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Securities Available for Sale and Held to Maturity - Securities Held to Maturity by Credit Rating, as Determined by Moody's (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
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Schedule of Available For Sale and Held to Maturity Securities [Line Items] |  |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | $ 1,207,454 | $ 1,335,385
Aaa [Member] |  |
Schedule of Available For Sale and Held to Maturity Securities [Line Items] |  |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | 52,405 | 1,335,385
Aaa1 to Aa3 [Member] |  |
Schedule of Available For Sale and Held to Maturity Securities [Line Items] |  |
Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss | $ 1,155,049 | $ 0

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