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Share-Based Compensation - Summary of Unvested Restricted Shares (Details ) - Restricted Stock
12 Months Ended
Dec. 31, 2020
$ / shares
shares
Shares  
Granted | shares 70,000
Vested | shares (70,000)
Weighted-average fair value  
Granted | $ / shares $ 0.82
Vested | $ / shares $ 0.82