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SUPPLEMENTAL BALANCE SHEET INFORMATION - Fees Invoiced in Advance (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Sep. 30, 2023
Fees invoiced in advance    
Customer deposits $ 22,374 $ 36,689
Deferred revenue 16,321 18,933
Fees invoiced in advance $ 38,695 $ 55,622