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Loss Per Common Share (Tables)
 12 Months Ended
Dec. 31, 2021
Earnings Per Share [Abstract]  
Schedule of Anti-dilutive Common Share Equivalents The weighted average share impact of warrants, stock options, and restricted stock units that were excluded from the calculation of diluted shares outstanding due to the Company incurring a net loss for the years ended December 31, 2021, 2020 and 2019 were as follows:
Anti-dilutive common share equivalents:202120202019
Warrants577 75 55 
Stock options6,773 2,090 1,891 
Restricted stock units116 — — 
Total anti-dilutive common share equivalents7,466 2,165 1,946 
Reconciliation of Basic and Diluted Loss per Common Share
The following table provides the reconciliation of net loss attributable to common stockholders and basic and diluted loss per common share by outlining the numerators and denominators of the computations for the years ended December 31:
202120202019
Numerator:
Net loss$(126,247)$(67,159)$(43,910)
Denominator:
Weighted average common shares outstanding, basic and diluted121,838 83,295 67,707 
Net loss per common share, basic and diluted$(1.04)$(0.81)$(0.65)