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Consolidated Statements of Shareholders' Equity (Parentheticals) - $ / shares
3 Months Ended 9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Accounting Standards Update [Extensible Enumeration]       Accounting Standards Update 2016-13 [Member]
Common Stock        
Dividends paid per common share (in dollars per share) $ 0.26 $ 0.24 $ 0.76 $ 0.71