Loans and Allowance for Loan Losses (Details 1) - USD ($) $ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|
| Summary loan commitments, unused lines of credit and standby letters of credit | ||
| Letters of credit outstanding, Amount | $ 144,261 | $ 127,928 |
| 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 | 143,553 | 126,902 |
| Standby letters of credit [Member] | ||
| Summary loan commitments, unused lines of credit and standby letters of credit | ||
| Letters of credit outstanding, Amount | $ 708 | $ 1,026 |