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Net Loss Per Share (Tables)
3 Months Ended
Mar. 31, 2021
Earnings Per Share [Abstract]  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
The following outstanding potentially dilutive shares have been excluded from the calculation of diluted net loss per share due to their anti-dilutive effect:
Three Months Ended March 31,
20212020
Stock options to purchase common stock3,560,541 2,399,195 
Unvested restricted stock units— 525,177 
Convertible promissory notes— 2,378,753 
Total3,560,541 5,303,125