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Investments, Gross Gains and Losses, Available for Sale Securities (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Investments [Abstract] |  |  |  |
Proceeds from sale of securities available-for-sale | $ 5,508 | $ 25,168 | $ 5,508 | $ 25,168
Gross gains and losses on available-for-sale securities [Abstract] |  |  |  |
Gross gains on available for sale securities | 9 | 161 | 9 | 161
Gross losses on available for sale securities | (1) | (169) | (1) | (169)
Net gains | $ 8 | $ (8) | $ 8 | $ (8)

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