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Loss Per Share (Tables)
9 Months Ended
Sep. 26, 2020
Earnings Per Share [Abstract]  
Schedule of Antidilutive Shares Exercise or Vesting Excluded from Computation of Earnings (Loss) Per Share
Since their impact would be anti-dilutive, our net loss per common share does not include the effect of the assumed exercise or vesting of the following shares:
 
   September 26,
2020
   September 28,
2019
 
Outstanding stock options
   7,863    13,782 
Unvested restricted stock awards
   33    33 
Outstanding warrants
   638,376    391,414 
  
 
 
   
 
 
 
Total
   646,272    405,229