Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Stockholders' Equity (Tables)

v3.24.3
Note 11 - Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 2024
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended September 30,

   

Nine Months Ended September 30,

 
   

2024

   

2023

   

2024

   

2023

 

Plant operations

  $ 28     $ 35     $ 213     $ 82  

Research and development cost

    6       8       42       48  

General and administrative expense

    604       551       1,908       1,750  

Total

  $ 638     $ 594     $ 2,163     $ 1,880  
Share-based Payment Arrangement, Option and Restricted Stock Unit, Activity [Table Text Block]
                 
    Number of Shares     Number of  
   

Available for

   

RSUs

 
   

Grant

   

Outstanding

 

Balances, December 31, 2023

    71,023       432,725  

Granted

    (57,126 )     57,126  

Exercised/ Released

          (169,075 )

Forfeited

    61,081       (61,081 )

Returned to Plan

    52,251        

Addition to 2019 Plan

    475,000        

Expiration of 2014 Plan

    (31,486 )      

Balances, September 30, 2024

    570,743       259,695