Securitization - Schedule of Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Sep. 30, 2024
Variable Interest Entity [Line Items]
Restricted cash and cash equivalents	$ 4,223	$ 1,516
Other current assets	299,756	288,068
Securitized intangible asset, net	77,246	82,844
Current maturities of securitized long-term debt	8,418	8,207
Securitized long-term debt	72,609	76,871
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Restricted cash and cash equivalents	4,223	1,516
Other current assets	11	3
Securitized intangible asset, net	77,246	82,844
Accrued interest	1,392	365
Current maturities of securitized long-term debt	8,418	8,207
Securitized long-term debt	$ 72,609	$ 76,871