Annual report pursuant to Section 13 and 15(d)

Equity (Details)

v3.21.2
Equity (Details)
 3 Months Ended 12 Months Ended
Sep. 30, 2021
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Sep. 30, 2021
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Sep. 30, 2020
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Sep. 30, 2019
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Schedule Of Stockholders Equity [Line Items]        
Common stock shares subject to registration rights (in shares) 11,069,793 11,069,793    
Common stock shares previously registered but not yet sold (in shares) 37,248 37,248    
Class A common stock        
Schedule Of Stockholders Equity [Line Items]        
Voting rights for each share | voting_right 1 1    
Conversion rate     1  
Common stock, shares issued (in shares)     36,600,639  
Class A common stock | Restricted Stock        
Schedule Of Stockholders Equity [Line Items]        
Issuance of stock grant awards (in shares) 510,733     292,534
Class A common stock | Equity Incentive Plan | Restricted Stock        
Schedule Of Stockholders Equity [Line Items]        
Issuance of stock grant awards (in shares)   510,733    
Class B common stock        
Schedule Of Stockholders Equity [Line Items]        
Voting rights for each share | voting_right 10 10    
Initial public offering (in shares)     2,214,022  
Common stock, shares outstanding (in shares)     15,691,839