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Earnings Per Share
6 Months Ended
Jun. 30, 2018
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share
The shares used in the computation of the company’s basic and diluted earnings per common share are as follows:
 
Three Months Ended
 
Six Months Ended
 
June 30,
2018
 
July 1,
2017
 
June 30,
2018
 
July 1,
2017
Weighted-average common shares outstanding
56,429,715

 
57,790,299

 
56,540,611

 
57,865,481

Effect of dilutive securities
912,347

 
1,223,560

 
1,013,034

 
1,303,683

Weighted-average common shares outstanding, assuming dilution
57,342,062

 
59,013,859

 
57,553,645

 
59,169,164



The dilutive effect of the potential exercise of outstanding options and stock-settled SARs to purchase common shares is calculated using the treasury stock method. As of June 30, 2018, there were 1,295,441 awards outstanding that were anti-dilutive; as of July 1, 2017, there were 722,015 awards outstanding that were anti-dilutive. Performance-based equity awards are included in the diluted earnings per share calculation based on the attainment of the applicable performance metrics to date.