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Securities - Carrying Value (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Amortized Cost |  |
Within one year | $ 0 |
One to five years | 34,855 |
Five to ten years | 64,591 |
After ten years | 78,922 |
Amortized Cost | 178,368 |
Amortized cost | 635,978 | $ 497,004
Held-to-maturity securities, One to five years | 5,793 |
Held-to-maturity securities, Five to ten years | 44,655 |
Held-to-maturity securities, After ten years | 11,681 |
Held-to-maturity securities, Amortized Cost | 62,129 |
Fair Value |  |
Within one year | 0 |
One to five years | 32,935 |
Five to ten years | 64,429 |
After ten years | 81,518 |
Fair Value | 178,882 |
Fair Value | 634,007 | 497,628
Held-to-maturity securities, One to five years | 5,976 |
Held-to-maturity securities, Five to ten years | 46,320 |
Held-to-maturity securities, After ten years | 12,041 |
Held-to-maturity securities, Fair Value | 64,337 |
Agency mortgage-backed securities |  |
Amortized Cost |  |
Amortized cost | 432,613 | 241,795
Fair Value |  |
Fair Value | 429,885 | 243,921
Private label mortgage-backed securities |  |
Amortized Cost |  |
Amortized cost | 19,997 | 57,268
Fair Value |  |
Fair Value | 20,235 | 58,116
Asset-backed securities |  |
Amortized Cost |  |
Amortized cost | 5,000 | 5,000
Fair Value |  |
Fair Value | $ 5,005 | $ 4,961

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