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Share-Based Compensation - Summary of the Activity Related to RSUs (Details) - Restricted Stock Units
9 Months Ended
Sep. 30, 2019
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Number of Shares, Granted | shares 1,339,300
Number of Shares, Vested | shares (20,000)
Non-vested units outstanding, Number of Shares, Ending balance | shares 1,319,300
Weighted Average Exercise Price, Granted | $ / shares $ 0.88
Weighted Average Exercise Price, Vested | $ / shares 1.09
Non-vested units outstanding, Weighted Average Exercise Price, Ending balance | $ / shares $ 0.88