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Loss Per Share (Details Textual) - Restricted shares granted on June 30, 2015 [Member] - shares | 3 Months Ended | 6 Months Ended
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Jun. 30, 2019 | Jun. 30, 2019 | Jun. 30, 2018
Loss Per Share (Textual) |  |  |
Vested restricted shares granted | 84,830 | 142,662 | 404,000
Unvested restricted shares | 143,662 | 0 |

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