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Series C Preferred Stock (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Dec. 21, 2012 | Dec. 22, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Preferred stock dividends |  |  |  | $ 58 |  | $ 175
Series C Preferred Stock [Member] |  |  |  |  |  |
Stock issued, shares | 728,706 |  |  |  |  |
Stock sold price per share | $ 10.00 |  |  |  |  |
Preferred stock dividends |  |  |  | $ 58 |  | $ 175
Number of shares exchanged |  | 728,706 |  |  |  |
Common Stock [Member] |  |  |  |  |  |
Stock issued, shares | 2,656,294 |  |  |  |  |
Common Stock [Member] | Series C Preferred Stock [Member] |  |  |  |  |  |
Net proceeds from the sale of preferred and common stock | $ 33,800 |  |  |  |  |

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