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Summary of Significant Accounting Policies (Details) - shares
9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Accounting Policies [Abstract]    
Stock option 2,513,513 2,548,345
Unvested restricted stock units 330,046 314,938
Warrants 8,815,210 94,465
Shares of common stock 2,391,336 229,348