v3.25.2
Summary Of Significant Accounting Policies (Allowance for Uncollectible Accounts) (Details) - USD ($)
$ in Thousands
9 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Allowance for Uncollectible Accounts [Roll Forward]    
Balance at Beginning of Period $ 26,194 $ 36,295
Additions Charged to Costs and Expenses 17,758 11,774
Discounts on Purchased Receivables 807 698
Net Accounts Receivable Written-Off (21,027) (16,145)
Balance at End of Period $ 23,732 $ 32,622