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v3.23.1

Equity (Details) | 6 Months Ended
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Mar. 31, 2023 voting_right shares
Class A Common Stock |
Schedule Of Stockholders Equity [Line Items] |
Voting rights for each share | voting_right | 1
Treasury stock, shares, acquired (in shares) | 5,267
Class A Common Stock | Restricted Stock | Equity Incentive Plan |
Schedule Of Stockholders Equity [Line Items] |
Forfeitures (in shares) | 1,864
Issuance of stock grant awards (in shares) | 180,798
Class B Common Stock |
Schedule Of Stockholders Equity [Line Items] |
Voting rights for each share | voting_right | 10

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