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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Preferred Stock
Common Stock
Paid-in Capital
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Treasury Stock
Balance, beginning of period at Sep. 30, 2020 $ 2,014,133 $ 0 $ 135,727 $ 1,678,843 $ 1,420,906 $ 16,953 $ (1,238,296)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 83,822       83,822    
Other comprehensive income (loss) 64,223         64,223  
Issuance of preferred stock, net 293,325 300,000   (6,675)      
Dividends on common stock (33,913)       (33,913)    
Dividends on preferred stock (2,722)       (2,722)    
Proceeds from stock-based awards 330   20 310      
Stock-based compensation expense 3,527   233 3,294      
Treasury stock acquired (89,772)           (89,772)
Balance, end of period at Mar. 31, 2021 2,332,953 300,000 135,980 1,675,772 1,468,093 81,176 (1,328,068)
Balance, beginning of period at Dec. 31, 2020 2,061,767 0 135,938 1,680,111 1,443,280 41,435 (1,238,997)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 44,871       44,871    
Other comprehensive income (loss) 39,741         39,741  
Issuance of preferred stock, net 293,325 300,000   (6,675)      
Dividends on common stock (17,336)       (17,336)    
Dividends on preferred stock (2,722)            
Proceeds from stock-based awards 300   18 282      
Stock-based compensation expense 2,078   24 2,054      
Treasury stock acquired (89,071)           (89,071)
Balance, end of period at Mar. 31, 2021 2,332,953 300,000 135,980 1,675,772 1,468,093 81,176 (1,328,068)
Balance, beginning of period at Sep. 30, 2021 2,126,064 300,000 135,993 1,678,622 1,528,611 69,785 (1,586,947)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 99,640       99,640    
Other comprehensive income (loss) 1,693         1,693  
Dividends on common stock (30,456)       (30,456)    
Dividends on preferred stock (7,312)       (7,312)    
Proceeds from stock-based awards 1,361   49 1,312      
Stock-based compensation expense 3,846   202 3,644      
Treasury stock acquired (3,135)           (3,135)
Balance, end of period at Mar. 31, 2022 2,191,701 300,000 136,244 1,683,578 1,590,483 71,478 (1,590,082)
Balance, beginning of period at Dec. 31, 2021 2,149,126 300,000 136,196 1,680,637 1,560,337 61,876 (1,589,920)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 49,359       49,359    
Other comprehensive income (loss) 9,602         9,602  
Dividends on common stock (15,557)       (15,557)    
Dividends on preferred stock (3,656)            
Proceeds from stock-based awards 533   19 514      
Stock-based compensation expense 2,456   29 2,427      
Treasury stock acquired (162)           (162)
Balance, end of period at Mar. 31, 2022 $ 2,191,701 $ 300,000 $ 136,244 $ 1,683,578 $ 1,590,483 $ 71,478 $ (1,590,082)