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Earnings Per Share
 6 Months Ended
Jun. 30, 2024
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share
The computations of basic and diluted earnings per share were as follows:
Three Months Ended
June 30,		Six Months Ended
June 30,
2024202320242023
Numerator:
Net income$27.9 $31.3 $56.3 $55.6 
Denominator:
Basic - weighted average shares outstanding18,896,36118,436,36718,780,99518,442,862
Effect of dilutive securities310,440277,088360,279248,874
Diluted - weighted average shares outstanding19,206,80118,713,45519,141,27418,691,736
Basic earnings per share$1.47 $1.70 $2.99 $3.02 
Diluted earnings per share$1.45 $1.68 $2.94 $2.98 
Excluded from the dilutive securities shown above were options to purchase and shares to be paid out under share-based compensation plans of 13,644 and 261,376 shares of common stock during the three months ended June 30, 2024 and 2023, respectively. Excluded from the dilutive securities shown above were options to purchase and shares to be paid out under share-based compensation plans of 73,185 and 449,763 shares of common stock during the six months ended June 30, 2024 and 2023, respectively. These exclusions were made if the exercise prices of the options are greater than the average market price of our common stock for the period, if the number of shares we can repurchase under the treasury stock method exceeds the weighted average shares outstanding in the options or if we have a net loss, as these effects would be anti-dilutive.