Quarterly report pursuant to Section 13 or 15(d)

Equity (Details)

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Equity (Details)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 30, 2024
USD ($)
voting_right
shares
Jun. 30, 2024
USD ($)
voting_right
shares
Apr. 12, 2024
USD ($)
Schedule of Stockholders Equity [Line Items]      
Treasury stock, shares, acquired (in shares) 93,408 93,408  
Stock repurchase program, authorized amount | $     $ 40.0
Treasury stock value | $ $ 5.3 $ 5.3  
Performance Shares      
Schedule of Stockholders Equity [Line Items]      
Shares issued (in shares)   55,358  
Class A Common Stock      
Schedule of Stockholders Equity [Line Items]      
Voting rights for each share | voting_right 1 1  
Treasury stock, shares, acquired (in shares)   33,772  
Class A Common Stock | Restricted Stock | Equity Incentive Plan      
Schedule of Stockholders Equity [Line Items]      
Forfeitures (in shares)   2,758  
Issuance of stock grant awards (in shares)   110,113  
Class B Common Stock      
Schedule of Stockholders Equity [Line Items]      
Voting rights for each share | voting_right 10 10