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Investment Securities - Maturity Dates Of Available-For-Sale Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Net Carrying Amount |  |
Due after 1 year through year 5 | $ 369,485 | $ 0
Due after 5 years through year 10 | 369,131 | 236
Due after 10 years | 219,576 | 303
Net Carrying Amount | 958,192 | 539
Fair Value |  |
Due after 1 year through year 5 | 366,605 | 0
Due after 5 years through year 10 | 367,536 | 236
Due after 10 years | 217,935 | 309
Fair Value | $ 952,076 | $ 545

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