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Share-based Compensation (Details 3) - Restricted stock units [Member]
6 Months Ended
Jun. 30, 2019
shares
Share-based Compensation [Abstract]  
Number of Shares, Non-vested beginning 22,364
Number of Shares, Granted 508,349
Number of Shares, Vested (27,792)
Number of Shares, Forfeited/Expired
Number of Shares, Non-vested ending 502,921