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Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]    
Net income $ 38.2 $ 20.8
Weighted average number of common shares 50,065,832 49,890,481
Dilutive effect of stock-based compensation 396,250 8,541
Adjusted weighted average number of common shares 50,462,082 49,899,022
Basic net income per common share $ 0.76 $ 0.42
Diluted net income per common share $ 0.76 $ 0.42