v3.26.1
Fair Value of Financial Instruments - Schedule of Cash, Cash Equivalents and Investments Classified by Security Type (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Sep. 30, 2025
Schedule of Cash, Cash Equivalents and Investments Classified by Security Type [Line Items]    
Adjusted cost $ 362,402 $ 251,544
Gross unrealized gains 172 393
Gross unrealized losses
Fair value 362,574 251,937
Cash and cash equivalents 250,649 185,574
Short-term investments 111,925 66,363
Cash [Member]    
Schedule of Cash, Cash Equivalents and Investments Classified by Security Type [Line Items]    
Adjusted cost 242,981 76,441
Gross unrealized gains
Gross unrealized losses
Fair value 242,981 76,441
Cash and cash equivalents 242,981 76,441
Short-term investments
U.S. government securities [Member]    
Schedule of Cash, Cash Equivalents and Investments Classified by Security Type [Line Items]    
Adjusted cost 34,003 80,915
Gross unrealized gains 172 393
Gross unrealized losses
Fair value 34,175 81,308
Cash and cash equivalents
Short-term investments 33,130 18,391
Certificates of deposit and time deposits [Member]    
Schedule of Cash, Cash Equivalents and Investments Classified by Security Type [Line Items]    
Adjusted cost 78,795 48,656
Gross unrealized gains
Gross unrealized losses
Fair value 78,795 48,656
Cash and cash equivalents
Short-term investments 78,795 47,972
Money market funds [Member]    
Schedule of Cash, Cash Equivalents and Investments Classified by Security Type [Line Items]    
Adjusted cost 6,623 45,532
Gross unrealized gains
Gross unrealized losses
Fair value 6,623 45,532
Cash and cash equivalents 6,623 45,532
Short-term investments