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Securities, AFS Debt Securities, Contractual Maturities (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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Available-for-sale Securities, Debt Maturities, Amortized Cost [Abstract] |  |
Within one year | $ 994 |
From one to five years | 200,771 |
From five to ten years | 756,482 |
After ten years | 804,444 |
Amortized cost | 1,762,691 | $ 1,694,806
Available-for-sale Securities, Debt Maturities, Estimated Fair Value [Abstract] |  |
Within one year | 996 |
From one to five years | 189,668 |
From five to ten years | 689,296 |
After ten years | 739,396 |
Fair value | $ 1,619,356 | $ 1,687,361

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