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Note 12 - Stock-based Compensation (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
      

Weighted Average

 
  

Number of

  

Grant Date

 
  

Shares

  

Fair Value per Share

 
         

Balance at December 31, 2023

  3,000   18.15 

Granted

  -   - 

Vested

  -   - 

Forefeited

  -   - 

Balance at March 31, 2024

  3,000   18.15