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Subsequent Events (Details) - USD ($) shares in Thousands, $ in Thousands |  | 9 Months Ended |
--- | --- | --- | ---
Oct. 01, 2016 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015
Business Acquisition [Line Items] |  |  |  |
Total assets |  | $ 1,307,775 |  | $ 1,276,736
Payments to acquire businesses, gross |  | 9,470 | $ 0 |
Sierra Vista Bank [Member] | Subsequent Event [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to acquire businesses, gross | $ 9,469 |  |  |
Sierra Vista Bank [Member] | Subsequent Event [Member] | Common Stock [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Equity interest issued, number of shares | 1,059 |  |  |
Sierra Vista Bank [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Total assets |  | $ 155,000 |  |

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