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Loss Per Common Share (Tables)
6 Months Ended
Jun. 30, 2020
Earnings Per Share [Abstract]  
Computation of earnings (loss) per common share
The following is the computation of loss per common share for the three and six months ended June 30, 2020 and 2019:
Three Months Ended
June 30,
Six Months Ended
June 30,
2020201920202019
Net loss$(4,311) $(5,220) $(3,161) $(10,506) 
Weighted-average basic and diluted common shares outstanding87,174,533  44,368,174  87,126,847  44,363,115  
Basic and diluted loss per common share$(0.05) $(0.12) $(0.04) $(0.24) 
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,
20202019
Options to purchase common stock7,698,313  5,078,873  
Warrants to purchase common stock413,320  413,320