Quarterly report [Sections 13 or 15(d)]

Debt and Financing Arrangements - Summary of Receivables Sold (Details)

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Debt and Financing Arrangements - Summary of Receivables Sold (Details) - Receivables Purchase Agreement - USD ($)
$ in Thousands
6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Transfer of Financial Assets Accounted for as Sales [Line Items]    
Gross receivables sold $ 167,708 $ 194,116
Cash collections reinvested (164,908) (186,016)
Net cash proceeds received $ 2,800 $ 8,100