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Stock-based Compensation (Tables)
3 Months Ended
Mar. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock Option Activity

There were no options granted, exercised, forfeited or expired during the three months ended March 31, 2025. The following table summarizes stock options outstanding as of March 31, 2025:

 

  

Number of

Options

  

Weighted-

Average

Exercise

Price

  

Weighted-

Average

Remaining

Contractual Term

(Years)

  

Aggregate

Intrinsic

Value

 
Outstanding — January 1, 2025   34,046   $30.55        $35 
Outstanding — March 31, 2025   34,046   $30.55    6.44   $31 
Exercisable — March 31, 2025   27,483   $36.66    6.17   $18 
Schedule of Stock-based Compensation Expenses

The following table presents total stock-based compensation expense for the three months ended March 31, 2025, and 2024:

 

   2025   2024 
  

Three Months Ended

March 31,

 
   2025   2024 
Research and development  $-   $116 
General and administrative   8    82 
Total stock-based compensation expense  $8   $198