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Earnings per share
 9 Months Ended
Sep. 29, 2019
Earnings Per Share [Abstract]  
Earnings per share
Earnings per share

Basic earnings per share are computed by dividing net income for the period by the weighted-average number of ordinary shares outstanding, net of Treasury shares and shares held in ESOP. Diluted earnings per share are computed by dividing net income for the period by the weighted average number of ordinary shares outstanding and the dilutive ordinary shares equivalents.
Basic and diluted earnings per share were calculated as follows:
 
 
Third Quarter
Year-to-date
 
 
In millions except share and per-share data
2019
 
2018
 
2019
 
2018
 
 
Basic earnings:
 
 
 
 
 
 
 
 
 
Net income
$
5.8

 
$
12.2

 
$
5.5

 
$
33.5

 
 
Weighted average number of £0.50 ordinary shares:
 
 
 
 
 
 
 
 
 
For basic earnings per share
27,393,743

 
26,773,064

 
27,243,638

 
26,614,646

 
 
Dilutive effect of potential common stock
475,673

 
884,029

 
599,887

 
892,881

 
 
For diluted earnings per share
27,869,416

 
27,657,093

 
27,843,525

 
27,507,527

 
 
Earnings per share using weighted average number of ordinary shares outstanding:
 
 
 
 
 
 
 
 
 
Basic earnings per ordinary share
$
0.21

 
$
0.46

 
$
0.20

 
$
1.26

 
 
Diluted earnings per ordinary share
$
0.21

 
$
0.44

 
$
0.20

 
$
1.22