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Stock-Based Compensation (Tables)
 9 Months Ended
Sep. 30, 2023
Stock-Based Compensation [Abstract]  
Schedule of Restricted Stock Unit The following table summarizes restricted stock unit, or RSU, activities for the nine months ended September 30, 2023:
   Restricted
Stock
Units		   Weighted
Average
Grant
Date Fair
Value		 
Non-vested as of December 31, 2022   196,838   $12.49 
Granted   165,100    3.02 
Forfeited   (30,431)   4.36 
Vested   (94,528)   12.16 
Non-vested as of September 30, 2023   236,979   $7.07 
Schedule of Stock Option Activities The following table summarizes stock option activities for the nine months ended September 30, 2023:
   Options   Weighted
Average
Exercise
Price		   Weighted
Average
Remaining
Contractual
Term
(years)		   Aggregate
Intrinsic
Value		 
Outstanding as of December 31, 2022   1,828,329   $14.23    8.16   $
              -
 
Granted   1,267,900    3.04    -    
-
 
Exercised   
-
    
-
    -    
-
 
Forfeited   (153,650)   6.93    -    
-
 
Expired   (9,054)   14.39    -    
-
 
Outstanding as of September 30, 2023   2,933,525   $9.77    8.05   $- 
                     
Vested and expected to vest at September 30, 2023   2,933,525   $9.77    8.05   $
-
 
Exercisable as of September 30, 2023   1,198,035    15.93    6.81    
-
 
Schedule of Total Stock Based Compensation Costs The following tables summarize total stock-based compensation costs recognized:
   For the Three Months Ended
September 30,		   For the Nine Months Ended
September 30,		 
   2023   2022   2023   2022 
Restricted stock units  $275   $287   $915   $991 
Stock options   1,172    1,150    3,725    4,267 
Total  $1,447   $1,437   $4,640   $5,258 
Stock-based compensation expense was reflected within the condensed consolidated statements of operations and comprehensive loss as: Stock-based compensation expense was reflected within the condensed consolidated statements of operations and comprehensive loss as:
   For the Three Months Ended
September 30,		   For the Nine Months Ended
September 30,		 
   2023   2022   2023   2022 
Research and development  $419   $361   $1,233   $1,150 
General and administrative   1,028    1,076    3,407    4,108 
Total  $1,447   $1,437   $4,640   $5,258