Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Sep. 30, 2023
Debt Disclosure [Abstract]
Long-term debt	$ 0	$ 0
Letters of Credit Outstanding, Amount	5,606
Line of Credit Facility, Remaining Borrowing Capacity	142,489
Loans Payable to Bank, Noncurrent	0
Line of Credit Facility, Maximum Borrowing Capacity	$ 150,000