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Loans and Allowance for Loan Losses (Details 1) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
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Summary loan commitments, unused lines of credit and standby letters of credit |  |
Letters of credit outstanding, Amount | $ 172,080 | $ 144,261
Loan commitments and unused lines of credit [Member] |  |
Summary loan commitments, unused lines of credit and standby letters of credit |  |
Letters of credit outstanding, Amount | 170,437 | 143,553
Standby letters of credit [Member] |  |
Summary loan commitments, unused lines of credit and standby letters of credit |  |
Letters of credit outstanding, Amount | $ 1,643 | $ 708

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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Details
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