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Note 7 - Net Income/ Loss Per Share (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
  

Three Months Ended

June 30,

  

Six Months Ended

June 30,

 
  

2022

  

2021

  

2022

  

2021

 

Net loss

 $(11,644) $(5,118) $(17,039) $(7,686)

Weighted-average number of common shares—basic and diluted

  30,439,277   29,987,917   30,439,277   29,707,352 

Net loss per share—basic and diluted

 $(0.38) $(0.17) $(0.56) $(0.26)