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Loss Per Common Share (Tables)
6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Computation of loss per common share
The following is the computation of loss per common share for the three and six months ended June 30, 2021 and 2020:
Three Months Ended
June 30,
Six Months Ended
June 30,
2021202020212020
Net loss$(14,269)$(4,311)$(26,746)$(3,161)
Weighted-average basic and diluted common shares outstanding88,043,447 87,174,533 87,948,440 87,126,847 
Loss per share - basic and diluted$(0.16)$(0.05)$(0.30)$(0.04)
Antidilutive Securities
The outstanding securities presented below were excluded from the calculation of loss per common share, for the periods presented, because such securities would have been anti-dilutive due to the Company’s loss per share during that period:
As of June 30,
20212020
Options to purchase common stock11,059,434 7,698,313 
Restricted stock units286,000 — 
Warrants to purchase common stock— 413,320