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Note 6 - Per Share Amounts (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
  

Three Months Ended June 30,

  

Six Months Ended June 30,

 
  

2021

  

2020

  

2021

  

2020

 

Net (loss) attributable to American Shared Hospital Services

 $(87,000) $(483,000) $(58,000) $(618,000)
                 

Weighted average common shares for basic earnings per share

  5,802,000   6,008,000   5,801,000   6,066,000 

Diluted effect of stock options and restricted stock awards

  -   69,000   -   69,000 

Weighted average common shares for diluted earnings per share

  5,802,000   6,077,000   5,801,000   6,135,000 
                 

Basic (loss) per share

 $(0.01) $(0.08) $(0.01) $(0.10)

Diluted (loss) per share

 $(0.01) $(0.08) $(0.01) $(0.10)