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Earnings per Share
 6 Months Ended
Jul. 02, 2022
Earnings Per Share [Abstract]  
Earnings per Share Earnings per Share
Basic and diluted earnings per share (EPS) were calculated as follows:
 Three Months EndedSix Months Ended
 July 2,
2022		July 3,
2021		July 2,
2022		July 3,
2021
(In thousands, except per share amounts)
Net Income Attributable to Kadant$26,170 $22,864 $67,362 $39,425 
Basic Weighted Average Shares11,660 11,579 11,645 11,566 
Effect of Stock Options, Restricted Stock Units and Employee Stock Purchase Plan Shares
29 71 27 65 
Diluted Weighted Average Shares11,689 11,650 11,672 11,631 
Basic Earnings per Share$2.24 $1.97 $5.78 $3.41 
Diluted Earnings per Share$2.24 $1.96 $5.77 $3.39 

The effect of outstanding and unvested restricted stock units (RSUs) of the Company's common stock totaling 8,000 shares in the second quarter of 2022 and 9,000 shares in the second quarter of 2021, 13,000 shares in the first six months of 2022 and 27,000 in the first six months of 2021 were 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.