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Loss per Share (Tables)
6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Schedule of Antidilutive Securities Excluded from Diluted Income (Loss) per Share

 

The following were excluded from the diluted loss per share calculation for the periods presented because their effect would be anti-dilutive:

 

 

 

Six Months Ended June 30,

 

 

 

2021

 

 

2020

 

Outstanding stock options

 

 

1,090,890

 

 

 

531,741

 

Outstanding warrants

 

 

2,141,378

 

 

 

3,474,500

 

Preferred stock

 

 

422,867

 

 

 

298,000

 

Total

 

 

3,655,135

 

 

 

4,304,241