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Debt - Schedule of Long-term Debt Instruments (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Sep. 30, 2022
Debt Instrument [Line Items]    
Total debt $ 242,667 $ 205,840
Secured Debt | Secured By Real Estate    
Debt Instrument [Line Items]    
Total debt 136,107 122,990
Secured Debt | Secured By Stock In Subsidiary    
Debt Instrument [Line Items]    
Total debt 72,879 55,005
Secured Debt | Secured By Other Assets    
Debt Instrument [Line Items]    
Total debt 10,019 10,545
Unsecured Debt    
Debt Instrument [Line Items]    
Total debt $ 23,662 $ 17,300