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Note 2 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2023
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
  

Years ended December 31,

 
  

2023

  

2022

  

2021

 

Numerator:

            

Net loss

 $(97,217) $(76,246) $(32,385)

Denominator:

            

Shares used in computing net loss per share, basic and diluted

  41,932   40,202   39,405 

Net loss per share, basic and diluted

 $(2.32) $(1.90) $(0.82)
             

Dilutive common stock options excluded from net loss per share, diluted

  2,123   2,055   2,211