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Earnings per Share
 12 Months Ended
Jan. 02, 2021
Earnings Per Share [Abstract]  
Earnings Per Share Earnings per Share
Basic and diluted EPS were calculated as follows:
(In thousands, except per share amounts)January 2, 2021December 28, 2019December 29, 2018
Net Income Attributable to Kadant$55,196 $52,068 $60,413 
Basic Weighted Average Shares11,482 11,235 11,086 
Effect of Stock Options, Restricted Stock Units and Employee Stock Purchase Plan Shares82 222 314 
Diluted Weighted Average Shares11,564 11,457 11,400 
   
Basic Earnings per Share$4.81 $4.63 $5.45 
   
Diluted Earnings per Share$4.77 $4.54 $5.30 

The effect of outstanding and unvested RSUs of the Company's common stock totaling 22,900 shares in 2020, 24,000 shares in 2019, and 18,700 shares in 2018 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.