v3.26.1
CONDENSED CONSOLIDATED STATEMENTS OF COMMON STOCK EQUITY (Unaudited) - USD ($)
$ in Thousands
Total
Common Stock
Premium on Common Stock
Accumulated Other Comprehensive (Loss) Income
Treasury Stock and Other
Retained Earnings
Balance as of beginning of period (in shares) at Sep. 30, 2024   99,461,000        
Balance as of beginning of period at Sep. 30, 2024 $ 2,200,443 $ 248,159 $ 633,811 $ (6,521) $ 26,220 $ 1,298,774
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 131,319         131,319
Other comprehensive income 68     68    
Common stock issued:            
Incentive compensation plan (in shares)   232,000        
Incentive compensation plan 8,242 $ 581 7,661      
Dividend reinvestment plan (in shares)   80,000        
Dividend reinvestment plan 3,744 $ 199 3,545      
Waiver discount (in shares)   418,000        
Waiver discount 19,910 $ 1,045 18,865      
Cash dividend declared (45,010)         (45,010)
Treasury stock and other (6,032)       (6,032)  
Balance as of end of period (in shares) at Dec. 31, 2024   100,191,000        
Balance as of end of period at Dec. 31, 2024 2,312,684 $ 249,984 663,882 (6,453) 20,188 1,385,083
Balance as of beginning of period (in shares) at Sep. 30, 2024   99,461,000        
Balance as of beginning of period at Sep. 30, 2024 2,200,443 $ 248,159 633,811 (6,521) 26,220 1,298,774
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 335,606          
Other comprehensive income 135          
Balance as of end of period (in shares) at Mar. 31, 2025   100,303,000        
Balance as of end of period at Mar. 31, 2025 2,477,907 $ 250,265 668,599 (6,386) 21,194 1,544,235
Balance as of beginning of period (in shares) at Dec. 31, 2024   100,191,000        
Balance as of beginning of period at Dec. 31, 2024 2,312,684 $ 249,984 663,882 (6,453) 20,188 1,385,083
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 204,287         204,287
Other comprehensive income 67     67    
Common stock issued:            
Incentive compensation plan (in shares)   31,000        
Incentive compensation plan 1,275 $ 76 1,199      
Dividend reinvestment plan (in shares)   81,000        
Dividend reinvestment plan 3,723 $ 205 3,518      
Cash dividend declared (45,135)         (45,135)
Treasury stock and other 1,006       1,006  
Balance as of end of period (in shares) at Mar. 31, 2025   100,303,000        
Balance as of end of period at Mar. 31, 2025 $ 2,477,907 $ 250,265 668,599 (6,386) 21,194 1,544,235
Balance as of beginning of period (in shares) at Sep. 30, 2025 100,478,590 100,479,000        
Balance as of beginning of period at Sep. 30, 2025 $ 2,391,666 $ 250,705 676,635 (11,463) 24,422 1,451,367
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 122,490         122,490
Other comprehensive income 258     258    
Common stock issued:            
Incentive compensation plan (in shares)   194,000        
Incentive compensation plan 8,890 $ 485 8,405      
Dividend reinvestment plan (in shares)   79,000        
Dividend reinvestment plan 3,733 $ 198 3,535      
Cash dividend declared (47,855)         (47,855)
Treasury stock and other (in shares)   (2,000)        
Treasury stock and other (6,847)       (6,847)  
Balance as of end of period (in shares) at Dec. 31, 2025   100,750,000        
Balance as of end of period at Dec. 31, 2025 $ 2,472,335 $ 251,388 688,575 (11,205) 17,575 1,526,002
Balance as of beginning of period (in shares) at Sep. 30, 2025 100,478,590 100,479,000        
Balance as of beginning of period at Sep. 30, 2025 $ 2,391,666 $ 250,705 676,635 (11,463) 24,422 1,451,367
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 341,402          
Other comprehensive income $ 516          
Balance as of end of period (in shares) at Mar. 31, 2026 100,861,916 100,862,000        
Balance as of end of period at Mar. 31, 2026 $ 2,648,557 $ 251,667 693,465 (10,947) 17,366 1,697,006
Balance as of beginning of period (in shares) at Dec. 31, 2025   100,750,000        
Balance as of beginning of period at Dec. 31, 2025 2,472,335 $ 251,388 688,575 (11,205) 17,575 1,526,002
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 218,912         218,912
Other comprehensive income 258     258    
Common stock issued:            
Incentive compensation plan (in shares)   30,000        
Incentive compensation plan 1,375 $ 75 1,300      
Dividend reinvestment plan (in shares)   82,000        
Dividend reinvestment plan 3,794 $ 204 3,590      
Cash dividend declared (47,908)         (47,908)
Treasury stock and other $ (209)       (209)  
Balance as of end of period (in shares) at Mar. 31, 2026 100,861,916 100,862,000        
Balance as of end of period at Mar. 31, 2026 $ 2,648,557 $ 251,667 $ 693,465 $ (10,947) $ 17,366 $ 1,697,006