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Subsequent Events (Details Narrative) - shares | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 31, 2019 | Jun. 30, 2019 | Dec. 31, 2018
Stock options exercised |  | 117,888 | 101,666
Subsequent Event [Member] |  |  |
Stock options exercised | 97,000 |  |

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