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Note 9 - Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2024
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
  

Three Months Ended June 30,

 

Six Months Ended June 30,

  

2024

 

2023

 

2024

 

2023

Restricted stock awards

 $9  $  $18  $ 

Total

 $9  $  $18  $ 
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
  

Number of Shares

 

Weighted Average Grant Date Fair Value

 

Aggregate Grant Date Fair Value

Balance as of December 31, 2023

  20,118  $5.22  $105 

Granted

         

Vested

         

Canceled

         

Balance as of June 30, 2024

  20,118  $5.22  $105