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Securities (Details Textual) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 USD ($) Securities | Mar. 31, 2017 USD ($)
Schedule Of Available For Sale Securities [Line Items] |  |
Proceeds from sales of securities available for sale | $ 262 | $ 43,263
Gross gains realized | 4 | 562
Gross Losses realized | $ 2 | $ 549
Number of securities | Securities | 562 |
Number of securities on unrealized loss position | Securities | 312 |
ASU 2016-01 | Equity securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Unrealized gains recognized in income statement for securities | $ 16 |

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