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Consolidated Statements of Shareholders' Equity (Parentheticals) - $ / shares
 3 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Accounting Standards Update [Extensible Enumeration] Accounting Standards Update 2016-13 [Member]  
Common Stock    
Dividends paid per common share (in dollars per share) $ 0.23 $ 0.32