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Shareholders' Equity (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
May 31, 2018 | Jan. 31, 2018 | Dec. 31, 2016 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018 | Jun. 30, 2018
Proceeds from issuance of common stock |  |  |  |  |  |  | $ 1,666 |  |
Number of share issued |  |  |  |  |  |  | 1,288,537 |  |
Net share price |  |  |  |  | $ 1.41 |  | $ 1.41 |  |
Net proceeds from offering |  |  |  |  |  |  | $ 1,817 |  |
Warrant exercise price |  |  |  | $ 1.13 | $ 2.05 | $ 1.13 | $ 2.05 | $ 1.13 | $ 1.13
Fair value of warrants |  |  |  | $ (23) | $ 288 | $ 219 | $ 478 |  |
Warrant liability |  |  |  | 206 |  | 206 |  | $ 425 |
Stock-based compensation expense |  |  |  | 9 | $ 13 | 35 | $ 623 |  |
Unrecognized share based compensation |  |  |  | $ 6 |  | $ 6 |  |  |
Recognized share based compensation | $ 583 |  |  |  |  |  |  |  |
Unrestricted shares of common stock granted | 485,168 |  |  |  |  |  |  |  |
Number of unvested stock options forfeited |  |  |  |  |  | 5,000 |  |  |
Nmber of stock option forfeited |  |  |  |  |  |  | 69,225 |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |
Number of share issued |  |  |  |  |  |  | 1,288,537 |  |
Market Offering [Member] |  |  |  |  |  |  |  |  |
Offering expenses |  |  |  |  |  |  | $ 151 |  |
Registered Direct Offering [Member] |  |  |  |  |  |  |  |  |
Number of share issued |  |  | 1,000,000 |  |  |  |  |  |
Net share price |  |  | $ 1.50 |  |  |  |  |  |
Proceeds from warrants |  |  | $ 1,320 |  |  |  |  |  |
Registered Direct Offering [Member] | Warrant [Member] |  |  |  |  |  |  |  |  |
Warrants to purchase common stock |  |  | 1,000,000 |  |  |  |  |  |
Warrant exercise price |  |  | $ 2.05 |  |  |  |  |  |
Fair value of warrants |  |  | $ 1,240 |  |  |  |  |  |
Registered Direct Offering [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |
Fair value of warrants |  |  | $ 80 |  |  |  |  |  |
Common Stock Sales Agreement [Member] |  |  |  |  |  |  |  |  |
Proceeds from issuance of common stock |  | $ 2,500 |  |  |  |  |  |  |

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