Summary of Significant Accounting Policies and Estimates - Schedule of Cash Restrictions (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Sep. 30, 2025
Cash and Cash Equivalents [Line Items]
Restricted cash	$ 25,630	$ 23,862
Total restricted cash	25,630	23,862
Collateral for credit card program
Cash and Cash Equivalents [Line Items]
Restricted cash	6,258	6,112
Collateral for outstanding bank guarantees
Cash and Cash Equivalents [Line Items]
Restricted cash	8,582	7,309
Collateral for surety program
Cash and Cash Equivalents [Line Items]
Restricted cash	10,645	10,370
Term deposits
Cash and Cash Equivalents [Line Items]
Restricted cash	$ 145	$ 71

Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.