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Securities - Maturities and Realized Gains and Losses (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Amortized Cost |  |  |
Due in one year or less | $ 33,651 |  |
Due after one year through five years | 135,970 |  |
Due after five years through ten years | 15,212 |  |
Due after ten years | 2,926 |  |
Amortized Cost | 187,759 | $ 216,650 |
Fair Value |  |  |
Due in one year or less | 33,757 |  |
Due after one year through five years | 137,446 |  |
Due after five years through ten years | 15,342 |  |
Due after ten years | 3,188 |  |
Fair Value | 189,733 | 214,910 |
Gross realized gains and losses on and the proceeds from the maturities and calls of securities |  |  |
Gross realized gains | 10 | 10 | $ 10
Net realized gains | 10 | 10 | 10
Proceeds from maturities and calls and paydowns of securities | $ 75,583 | $ 51,067 | $ 41,520

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