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Securities - Unrealized Gains (Losses) of Debt Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Gross Unrealized Gains |  |
Total unrealized gains (losses) on available-for-sale debt securities | $ 7,257 | $ 990
Income tax (expense) benefit | (1,563) | (213)
Net Unrealized Gains (Losses), Net of Tax Included in Accumulated Other Comprehensive Income (Loss) | 5,694 | 777
Gross Unrealized Losses |  |
Total unrealized gains (losses) on available-for-sale debt securities | (46,054) | (72,729)
Income tax (expense) benefit | 9,921 | 15,644
Net Unrealized Gains (Losses), Net of Tax Included in Accumulated Other Comprehensive Income (Loss) | (36,133) | (57,085)
Net Unrealized Losses |  |
Total unrealized gains (losses) on available-for-sale debt securities | (38,797) | (71,739)
Income tax (expense) benefit | 8,358 | 15,431
Net Unrealized Gains (Losses), Net of Tax Included in Accumulated Other Comprehensive Income (Loss) | $ (30,439) | $ (56,308)

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