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Common Stock Placements (Details) - Common Stock $ / shares in Units, $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 USD ($) $ / shares shares | Dec. 31, 2013 $ / shares shares
Sale of stocks and warrants [Line Items] |  |
Shares issued (in shares) | shares | 5,750,000 | 5,750,000
Share issue price (in dollars per share) | $ / shares | $ 6.80 | $ 6.80
Proceeds from shares issued | $ 36,704 |
Legal fees paid for secondary offering | $ 194 |

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