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Investment Securities - Narrative (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2025 USD ($) security | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Investments, Debt and Equity Securities [Abstract] |  |  |
Equity securities without readily determinable fair values | $ 68,500 | $ 65,100 |
Upward adjustments of equity securities without readily determinable fair values | 0 | 0 |
Downward adjustments of equity securities without readily determinable fair values | 20 | 0 | $ 0
Impairment of equity securities without readily determinable fair values | 2,098 | 3,730 | 688
Investment securities, income tax (benefit) expense | 2,200 | (676,520) | $ 403
Pledged securities | $ 8,600,000 | $ 6,900,000 |
Number of securities by a single non-government sponsored issuer exceeding 10% of shareholders' equity | security | 0 |  |

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