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Loans and Allowance for Loan Losses (Details 1) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
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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- References

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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