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Loss Per Share (Details Textual) - Restricted shares granted pursuant to 2015 Plan [Member] - shares | 3 Months Ended | 6 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Loss Per Share (Textual) |  |  |  |
Vested restricted shares granted | 5,834 | 84,830 | 5,834 | 142,662
Unvested restricted shares | 1,154,002 |  | 1,154,002 |

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- Definition Vested restricted shares granted. + References No definition available. + Details
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- Details
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