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Subsequent Events (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | ---
Jan. 23, 2019 | Jan. 21, 2019 | Jan. 15, 2019 | Jan. 14, 2019 | Jun. 05, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | [1]
Number of common stock for granted |  |  |  |  |  | 10,000 | 272,090
Investor [Member] |  |  |  |  |  |  |
Number of common stock sale |  |  |  |  | 252,652 |  |
Sale of stock price per share |  |  |  |  | $ 40.50 |  |
Subsequent Event [Member] | Non-employee Directors [Member] |  |  |  |  |  |  |
Number of common stock for granted |  | 2,326 |  |  |  |  |
Subsequent Event [Member] | Securities Purchase Agreement [Member] | Investor [Member] |  |  |  |  |  |  |
Number of common stock sale | 250,000 |  | 590,000 | 330,000 |  |  |
Sale of stock price per share | $ 9.875 |  | $ 10.00 | $ 6.50 |  |  |
Proceeds from issuance and sale of stock | $ 2,470 |  | $ 590 |  |  |  |
Subsequent Event [Member] | Securities Purchase Agreement [Member] | Investor [Member] | Pre-Funded Warrant [Member] |  |  |  |  |  |  |
Warrant to purchase for common stock |  |  |  | 125,323 |  |  |
Warrant price per share |  |  |  | $ 6.49 |  |  |
Proceeds from issuance and sale of stock |  |  |  | $ 3,000 |  |  |
[1] | December 31, 2018 and 2017 option data represents the number of shares adjusted to retroactively reflect the 1:15 Reverse Split effected on September 4, 2018. Refer to Note 1 for further information.

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