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Securities Securities - (Premium Amortization and Discount Accretion Included in Income on Securities) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract] |  |  |
Premium amortization | $ (110,997) | $ (121,994) | $ (126,210)
Discount accretion | 13,597 | 2,752 | 2,425
Net (premium amortization) discount accretion | $ (97,400) | $ (119,242) | $ (123,785)

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