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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]  
Summary of Stock Option Activity

A summary of the Company’s outstanding stock option activity for the years ended December 31, 2021 and 2020 is as follows:

       December 31, 2021     
      

Weighted-

Average
Exercise

  

Weighted-

Average

Remaining

Contractual Life

   Intrinsic 
   Options   Price   (Years)   Value 
As of December 31, 2020   465,393   $5.53    9.3    511,518 
Granted   368,500    1.93    10.0    - 
Exercised   -    -    -    - 
Forfeited   -    -    -    - 
Expired   (1)   139,158.00    -    - 
As of December 31, 2021   833,892   $3.91    8.7   $87,553 
Exercisable at December 31, 2021   268,185   $10.04    8.3   $46,449 
Vested and expected to vest at December 31, 2021   830,292   $3.91    8.7   $86,703 

 

 

       December 31, 2020     
      

Weighted-

Average
Exercise

  

Weighted-

Average

Remaining

Contractual Life

   Intrinsic 
   Options   Price   (Years)   Value 
As of December 31, 2019   377   $7,446.69    5.3    - 
Granted   465,017    0.47    10.0    - 
Exercised   -    -    -    - 
Forfeited   -    -    -    - 
Expired   (1)   -    -    - 
As of December 31, 2020   465,393   $5.53    9.3   $511,518 
Exercisable at December 31, 2020   376   $6,977.42    4.3   $- 
Vested and expected to vest at December 31, 2020   465,393   $5.53    9.3   $511,518 
Schedule of Assumption Used for Fair value of Option

    Year Ended 
    December 31, 2021 
Weighted-average risk-free interest rate   0.73%-0.85 %
Weighted-average expected life (in years)   5.3-5.9  
Expected dividend yield   -%
Weighted-average expected volatility   138%-139 %
Schedule of Unrecognized Stock-based Compensation

Unrecognized stock-based compensation as of December 31, 2021, is as follows (in thousands):

       Weighted Average 
   Unrecognized Stock-Based   Remaining
of Recognition
 
   Compensation   (in years) 
Stock options  $531    1.9 
Stock grants  11    1.3