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Net Loss Per Share (Tables)
6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share
The following table summarizes potential shares of common stock that were excluded from the diluted net loss per share calculation because of their anti-dilutive effect for the three and six months ended June 30, 2021 and 2020:
Common Stock Equivalents20212020
Options to purchase common stock10,330,818 9,193,096 
Service-based restricted stock units2,516,102 2,868,665 
Performance-based restricted stock units663,353 — 
Convertible preferred stock3,309 3,309 
Convertible notes3,049,980 14,585,653 
August 2019 Bonds— 4,962,364 
December 2019 Bonds— 1,009,450 
Total16,563,562 32,622,537