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Earnings per Common Share
 9 Months Ended
Sep. 30, 2025
Earnings Per Share [Abstract]  
Earnings per Common Share
Basic earnings per common share is calculated by dividing net income by the weighted average number of common shares outstanding during the period presented, excluding unvested restricted stock. Diluted earnings per share is calculated by dividing net income by the weighted average number of common shares determined for the basic earnings per share computation plus the dilutive effects of stock-based compensation using the treasury stock method.
The following table sets forth the computation of basic and diluted earnings per share for the periods presented:
Three Months Ended September 30,Nine Months Ended September 30,
2025202420252024
Net income$71.4 $55.5 $193.3 $173.9 
Weighted average common shares outstanding for basic earnings per share computation
103,153,579 102,970,851 103,169,158 102,917,610 
Dilutive effects of stock-based compensation
233,412 262,767 235,643 207,449 
Weighted average common shares outstanding for diluted earnings per common share computation
103,386,991 103,233,618 103,404,801 103,125,059 
Basic earnings per common share$0.69 $0.54 $1.87 $1.69 
Diluted earnings per common share0.69 0.54 1.87 1.69 
Anti-dilutive unvested time restricted stock4,135 5,841 6,014 47,854 
The Company had 768,247 and 773,563 shares of unvested restricted stock as of September 30, 2025 and 2024, respectively, that were not included in the computation of diluted earnings per common share because performance conditions for vesting had not been met.