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Investments, Debt and Equity Securities - Schedule of Sale of Investment Securities and Gross Gains and Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Available-for-sale: |  |  |  |
Sales proceeds | $ 79,840 | $ 10,664 | $ 79,840 | $ 10,664
Gross realized gains | 5 | 17 | 5 | 17
Gross realized losses | (2,798) | (80) | (2,798) | (80)
Sale of equity securities: |  |  |  |
Sales proceeds | 2,807 | 0 | 2,807 | 0
Gross realized gain | $ 2,807 | $ 0 | $ 2,807 | $ 0

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