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Income Attributable to Tennant Company Per Share (Tables)
12 Months Ended
Dec. 31, 2023
Earnings Per Share [Abstract]  
Schedule of Computations of Basic and Diluted Earnings per Share
The computations of basic and diluted earnings attributable to Tennant Company per share for the years ended December 31 were as follows:
202320222021
Numerator:
Net income$109.5 $66.3 $64.9 
Denominator:
Basic - weighted average shares outstanding18,509,52318,494,35618,499,674
Effect of dilutive securities274,110202,899349,543
Diluted - weighted average shares outstanding18,783,63318,697,25518,849,217
Basic earnings per share$5.92 $3.58 $3.51 
Diluted earnings per share$5.83 $3.55 $3.44