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Earnings Per Share (EPS)
 3 Months Ended
Apr. 01, 2018
Earnings Per Share (EPS) [Abstract]  
Earnings Per Share (EPS)
Note 3.  Earnings Per Share (EPS)

Basic earnings per share are based upon the weighted average number of common shares outstanding during the period.  Diluted earnings per share are based upon the weighted average number of common shares outstanding during the period assuming the issuance of common shares for all potentially dilutive common shares outstanding.
 
The following table sets forth the computation of basic and diluted earnings per share:

 
Three Months Ended
 
  
Apr. 1,
2018
  
Apr. 2,
2017
 
  
(in millions, except per share data)
 
       
Net income attributable to MTI
 
$
39.9
  
$
34.6
 
         
Weighted average shares outstanding
  
35.4
   
35.0
 
Dilutive effect of stock options and stock units
  
0.3
   
0.6
 
Weighted average shares outstanding, adjusted
  
35.7
   
35.6
 
         
Basic earnings per share attributable to MTI
 
$
1.13
  
$
0.99
 
         
Diluted earnings per share attributable to MTI
 
$
1.12
  
$
0.97
 
 
Options to purchase 362,443 shares and 185,104 shares of common stock for the three-month periods ended April 1, 2018 and April 2, 2017, 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.