Quarterly report [Sections 13 or 15(d)]

Note 12 - Stockholders' Equity (Tables)

v3.25.3
Note 12 - Stockholders' Equity (Tables)
9 Months Ended
Sep. 30, 2025
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended September 30,

   

Nine Months Ended September 30,

 
   

2025

   

2024

   

2025

   

2024

 

Plant operations

  $ 7     $ 28     $ 20     $ 213  

Research and development cost

    30       6       99       42  

General and administrative expense

    415       604       1,380       1,908  

Total

  $ 452     $ 638     $ 1,499     $ 2,163  
Share-based Payment Arrangement, Option and Restricted Stock Unit, Activity [Table Text Block]
                         
   

Number of Shares

   

Number of

   

Number of

 
   

Available for

   

PSUs

   

RSUs

 
   

Grant

   

Outstanding

   

Outstanding

 

Balances, December 31, 2024

    (23,244 )     18,018       87,410  

Authorized

    260,000              

Granted

    (162,248 )           162,248  

Released

                (55,667 )

Forfeited

    27,407             (27,407 )

Returned to Plan

    12,541              

Balances, September 30, 2025

    114,456       18,018       166,584