Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical)

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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - shares
12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Statement of Stockholders' Equity [Abstract]      
Purchase of treasury stock (in shares) 99,829 1,363,785 380,109
Issuance of treasury stock (in shares) 305,318 223,033 53,377
Cancellation of treasury stock (in shares) 34,327 31,309 34,727