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Earnings Per Share
 6 Months Ended
Jun. 27, 2020
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 EndedSix Months Ended
June 27, 2020June 29, 2019June 27, 2020June 29, 2019
Weighted-average common shares outstanding54,413,820  55,253,253  54,468,839  55,383,887  
Effect of dilutive securities378,730  787,231  451,621  788,934  
Weighted-average common shares outstanding, assuming dilution
54,792,550  56,040,484  54,920,460  56,172,821  

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 27, 2020, there were 3,238,975 awards outstanding that were anti-dilutive; as of June 29, 2019, there were 1,223,467 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.