Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Related Party Transaction [Line Items]
Purchase of inventories	$ 21,700	$ 26,000	$ 71,500	$ 47,400
Expenses incurred	500	700	1,200	1,100
Total revenues	488,321	524,331	852,334	890,990
Accounts receivable, net	110,142		110,142		$ 113,175
Accounts payable	41,402		41,402		27,113
Affiliated Entities and Individuals
Related Party Transaction [Line Items]
Total revenues	200	100	1,300	1,000
Costs and expenses, related party	0	$ 100	0	$ 100
Affiliated Entity
Related Party Transaction [Line Items]
Accounts receivable, net	9,800		9,800		4,700
Accounts payable	$ 100		$ 100		$ 0