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Investment Securities - Maturities (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Held-to-maturity Securities, Amortized Cost |  |
Within one year | $ 245 | $ 246
After one but within five years | 20,203 | 7,550
After five years through ten years | 58,465 | 52,113
After ten years | 90,125 | 49,127
Total | 169,038 | 109,036
Held-to-maturity Securities, Fair Value |  |
Within one year | 246 | 250
After one but within five years | 21,184 | 7,961
After five years through ten years | 60,963 | 55,872
After ten years | 91,745 | 51,102
Total | 174,138 | 115,185
Available-for-sale Securities, Amortized Cost |  |
Within one year | 14,263 | 11,530
After one but within five years | 53,194 | 59,028
After five years through ten years | 183,706 | 144,908
After ten years | 253,771 | 157,572
Available-for-sale, amortized cost | 504,934 | 373,038
Available-for-sale Securities, Fair Value |  |
Within one year | 14,403 | 11,687
After one but within five years | 55,835 | 62,397
After five years through ten years | 189,492 | 154,089
After ten years | 258,233 | 164,178
Total | $ 517,963 | $ 392,351

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