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Weighted Average Shares Outstanding
6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Weighted Average Shares Outstanding Weighted Average Shares Outstanding
Earnings per share, basic and diluted, as presented in the condensed consolidated statements of comprehensive income, are calculated by dividing net income attributable to Knight-Swift by the respective weighted average common shares outstanding during the period.
The following table reconciles basic weighted average shares outstanding to diluted weighted average shares outstanding:
Quarter-to-Date June 30,Year-to-Date June 30,
 2021202020212020
(In thousands)
Basic weighted average common shares outstanding165,577 169,948 165,751 170,283 
Dilutive effect of equity awards1,008 676 999 675 
Diluted weighted average common shares outstanding166,585 170,624 166,750 170,958 
Anti-dilutive shares excluded from diluted earnings per share 1
31 365 47 329 
1    Shares were excluded from the dilutive-effect calculation because the outstanding awards' exercise prices were greater than the average market price of the Company's common stock for the periods presented.