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Note 8 - Net Income Loss Per Share
 12 Months Ended
Dec. 31, 2021
Notes to Financial Statements  
Earnings Per Share [Text Block]

8. Net Income/Loss Per Share

 

The following summarizes the computation of basic and diluted net income(loss) per share for the years ended December 31, 2021, 2020 and 2019 (in thousands, except share and per share data):

 

  

Year Ended December 31,

 
  

2021

  

2020

  

2019

 

Net income (loss)

 $(17,414) $(11,221) $668,629 

Weighted-average number of common shares—basic

  30,043,380   30,823,458   38,945,468 

Net income (loss) per share—basic

 $(0.58) $(0.36) $17.17 

Weighted-average number of common shares—diluted

  30,043,380   30,823,458   46,319,457 

Net income (loss) per share—diluted

 $(0.58) $(0.36) $14.44 

 

The following potentially dilutive securities outstanding, prior to the use of the treasury stock method or if-converted method, have been excluded from the computation of diluted weighted-average common shares outstanding, because including them would have had an anti-dilutive effect due to the losses reported.

 

  

Year Ended December 31,

 
  

2021

  

2020

  

2019

 

Stock options

  4,656,677   5,327,425   6,965,730 

Warrants to purchase common stock

  -   -   - 

Total

  4,656,677   5,327,425   6,965,730