v3.25.2
Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Jul. 05, 2017
Basic earnings per common share:          
Net income - basic $ 26,503 $ 17,950 $ 82,909 $ 67,899  
Weighted shares outstanding - basic (in shares) 59,134,000 54,898,000 56,308,000 55,022,000  
Basic earnings per share (in dollars per share) $ 0.45 $ 0.33 $ 1.47 $ 1.23  
Diluted earnings per common share:          
Net income - basic $ 26,503 $ 17,950 $ 82,909 $ 67,899  
Add: Convertible Notes interest expense, net of tax 2,066 2,427 6,909 7,501  
Net income - diluted $ 28,569 $ 20,377 $ 89,818 $ 75,400  
Weighted shares outstanding - basic (in shares) 59,134,000 54,898,000 56,308,000 55,022,000  
Equity-based compensation awards - effect of dilution (in shares) 1,233,000 1,056,000 1,333,000 1,129,000  
Convertible Notes - effect of dilution (in shares) 22,551,000 27,054,000 25,503,000 28,158,000  
Weighted shares outstanding - diluted (in shares) 82,918,000 83,008,000 83,144,000 84,309,000  
Diluted earnings per share (in dollars per share) $ 0.34 $ 0.25 $ 1.08 $ 0.89  
Potential common shares excluded from the calculation of diluted earnings per common share above (in shares) 1,693,000 1,917,000 1,731,000 1,913,000  
3.750% Convertible Senior Notes, Due 2029 | Senior Notes          
Diluted earnings per common share:          
Stated interest rate 3.75% 3.75% 3.75% 3.75%  
2.375% Convertible Senior Notes, Due 2025 | Senior Notes          
Diluted earnings per common share:          
Stated interest rate 2.375% 2.375% 2.375% 2.375%  
Weighted average shares (in shares) 2,100,000   5,000,000    
2024 Convertible Notes | Senior Notes          
Diluted earnings per common share:          
Add: Convertible Notes interest expense, net of tax   $ 0      
Convertible Notes - effect of dilution (in shares)   75,854   25,192  
Potential common shares excluded from the calculation of diluted earnings per common share above (in shares)   3,400,000      
Stated interest rate   2.875%   2.875% 2.875%
Weighted average shares (in shares)       1,200,000  
Conversion price, per share (in dollars per share)   $ 10.00   $ 10.00 $ 10.00
Restricted stock          
Diluted earnings per common share:          
Potential common shares excluded from the calculation of diluted earnings per common share above (in shares) 1,693,000 1,917,000 1,731,000 1,913,000