Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Sep. 30, 2022
Debt Disclosure [Abstract]
Long-term debt	$ 0	$ 81,628
Letters of Credit Outstanding, Amount	4,166
Line of Credit Facility, Remaining Borrowing Capacity	143,396
Loans Payable to Bank, Noncurrent	0	$ 82,659
Line of Credit Facility, Maximum Borrowing Capacity	$ 150,000