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Securities - Carrying Value (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Amortized Cost |  |
One to five years | $ 425 |
Five to ten years | 63,004 |
After ten years | 185,591 |
Amortized Cost | 249,020 |
Amortized cost | 491,726 | $ 481,357
Held-to-maturity securities, Five to ten years | 14,286 |
Held-to-maturity securities, After ten years | 5,914 |
Held-to-maturity securities, Amortized Cost | 20,200 |
Fair Value |  |
One to five years | 403 |
Five to ten years | 61,057 |
After ten years | 176,885 |
Fair Value | 238,345 |
Fair Value | 468,997 | 473,275
Held-to-maturity securities, Five to ten years | 13,956 |
Held-to-maturity securities, After ten years | 5,554 |
Held-to-maturity securities, Fair Value | 19,510 |
Mortgage-backed securities |  |
Amortized Cost |  |
Amortized cost | 237,703 | 215,452
Fair Value |  |
Fair Value | 225,692 | 209,720
Asset-backed securities |  |
Amortized Cost |  |
Amortized cost | 5,003 | 5,000
Fair Value |  |
Fair Value | $ 4,960 | 5,009
Other securities |  |
Amortized Cost |  |
Amortized cost |  | 3,000
Fair Value |  |
Fair Value |  | $ 2,932

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