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Earnings per Share
3 Months Ended
Apr. 03, 2021
Earnings Per Share [Abstract]  
Earnings per Share Earnings per Share
Basic and diluted earnings per share (EPS) were calculated as follows:
 Three Months Ended
 April 3,
2021
March 28,
2020
(In thousands, except per share amounts)
Net Income Attributable to Kadant$16,561 $12,531 
Basic Weighted Average Shares11,553 11,432 
Effect of Stock Options, Restricted Stock Units and Employee Stock Purchase Plan Shares
59 76 
Diluted Weighted Average Shares11,612 11,508 
Basic Earnings per Share$1.43 $1.10 
Diluted Earnings per Share$1.43 $1.09 

The effect of outstanding and unvested restricted stock units (RSUs) of the Company's common stock totaling 44,000 shares in the first quarter of 2021 and 43,000 shares in the first quarter of 2020 was not included in the computation of diluted EPS for the respective periods as the effect would have been antidilutive or, for unvested performance-based RSUs, the performance conditions had not been met as of the end of the reporting periods.