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Earnings Per Share
 12 Months Ended
Dec. 31, 2023
Earnings Per Share [Abstract]  
Earnings Per Share
Note 7.  Earnings Per Share (EPS)

  
Year Ended December 31,
  
(in millions, except per share data)
  
2023
    
2022
    
2021
  
Net income attributable to MTI
  
$
84.1
    
$
122.2
    
$
164.4
  
                         
                         
Weighted average shares outstanding
    
32.5
      
32.7
      
33.6
  
Dilutive effect of stock options and deferred restricted stock units
    
0.1
      
0.1
      
0.2
  
Weighted average shares outstanding, adjusted
    
32.6
      
32.8
      
33.8
  
                         
Basic earnings per share attributable to MTI
  
$
2.59
    
$
3.74
    
$
4.89
  
                         
Diluted earnings per share attributable to MTI
  
$
2.58
    
$
3.73
    
$
4.86
  


Of the options outstanding of 1,514,462, 1,363,418 and 1,330,002 for the years ended December 31, 2023, 2022 and 2021, respectively, options to purchase 917,177 shares, 754,867 shares and 510,683 shares of common stock for the years ended December 31, 2023, 2022 and 2021, respectively, were not included in the computation of diluted earnings per share because they were anti-dilutive, as the exercise prices of the options were greater than the average market price of the common shares.