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, 2026
Mar. 31, 2025
Transfer of Financial Assets Accounted for as Sales [Line Items]    
Gross receivables sold $ 79,656 $ 167,708
Cash collections reinvested (89,456) (164,908)
Net cash (reinvested) received $ (9,800) $ 2,800