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INVESTMENT SECURITIES - Summary of Maturities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Available for sale, Amortized Cost |  |
Amortized Cost | $ 421,272 | $ 400,718
Available for sale, Fair Value |  |
Fair Value | 421,466 | 410,624
Total debt securities |  |
Available for sale, Amortized Cost |  |
Within one year | 994 |
After one year, but within five years | 120,932 |
After five years, but within ten years | 33,898 |
After ten years | 264,570 |
Amortized Cost | 420,394 | 399,790
Available for sale, Fair Value |  |
Within one year | 1,006 |
After one year, but within five years | 119,219 |
After five years, but within ten years | 34,495 |
After ten years | 265,868 |
Fair Value | $ 420,588 | $ 409,696

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