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Securities (Details 2) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2018 | Jun. 30, 2017
Realized Gain Loss [Line Items] |  |
Proceeds | $ 22,545 | $ 26,428
Gross gains | 1,004 | 589
Gross losses | $ 0 | $ (44)

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