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Stockholders' Equity (Detail Textuals 1) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 10, 2015 | Aug. 30, 2016 | Jun. 23, 2016 | Dec. 31, 2016 | Dec. 31, 2015
Class of Stock [Line Items] |  |  |  |  |
Proceeds from issuance of common stock, net of issuance costs |  |  |  | $ 6,794 | $ 11,061
Proceeds from further issuance of share |  |  |  |  | $ 9,171
Controlled Equity Offering Sales Agreement | Cantor Fitzgerald & Co., ("Cantor") |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Percentage of gross sales price per share sold | 3.00% |  |  |  |
Number of common stock issued | 114,078 |  |  | 41,996 |
Proceeds from issuance of common stock, net of issuance costs |  |  |  | $ 200 |
Maximum amount of offering price for common stock | $ 8,350 |  |  |  |
FBR (the "FBR Sales Agreement") |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Percentage of gross sales price per share sold |  |  | 3.00% |  |
Number of common stock issued |  | 483,476 | 766,149 |  |
Proceeds from issuance of common stock, net of issuance costs |  | $ 2,800 | $ 3,900 |  |
Maximum amount of offering price for common stock |  |  | $ 2,800 |  |
Proceeds from further issuance of share |  | $ 1,200 |  |  |

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