Summary of Significant Accounting Policies - Summary of Contract Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Contract With Customer, Liability [Roll Forward]
Beginning contract liability	$ 63,955	$ 51,649
Revenue recognized from contract liabilities included in the beginning balance	(38,408)	(31,378)
Increases due to cash received, net of amounts recognized in revenue during the period	27,907	30,706
Ending contract liability	$ 53,454	$ 50,977