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Note 2 - Stock-based Compensation (Tables)
9 Months Ended
Sep. 30, 2023
Notes Tables  
Schedule of Nonvested Share Activity [Table Text Block]
      

Weighted

 
      

Average

 
  

Deferred

  

Fair Value

 
  

Stock

  

Per Share

 

Non-Vested Balance, December 31, 2022

  41,200  $16.62 

Granted

  19,020   25.52 

Vested

  (20,050)  14.33 

Forfeited

  (1,950)  19.07 

Non-Vested Balance, September 30, 2023

  38,220  $22.13