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Fair Value of Financial Instruments - Schedule of Cash, Cash Equivalents and Investments Classified by Security Type (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Sep. 30, 2025
Schedule of Cash, Cash Equivalents and Investments Classified by Security Type [Line Items]    
Adjusted cost $ 328,138 $ 251,544
Gross unrealized gains 356 393
Gross unrealized losses
Fair value 328,494 251,937
Cash and cash equivalents 271,811 193,629
Short-term investments 56,683 58,308
Cash [Member]    
Schedule of Cash, Cash Equivalents and Investments Classified by Security Type [Line Items]    
Adjusted cost 266,239 188,111
Gross unrealized gains
Gross unrealized losses
Fair value 266,239 188,111
Cash and cash equivalents 266,239 188,111
Short-term investments
U.S. government securities [Member]    
Schedule of Cash, Cash Equivalents and Investments Classified by Security Type [Line Items]    
Adjusted cost 16,644 16,607
Gross unrealized gains 356 393
Gross unrealized losses
Fair value 17,000 17,000
Cash and cash equivalents
Short-term investments 17,000 17,000
Certificates of deposit and time deposits [Member]    
Schedule of Cash, Cash Equivalents and Investments Classified by Security Type [Line Items]    
Adjusted cost 39,683 41,308
Gross unrealized gains
Gross unrealized losses
Fair value 39,683 41,308
Cash and cash equivalents
Short-term investments 39,683 41,308
Money market funds [Member]    
Schedule of Cash, Cash Equivalents and Investments Classified by Security Type [Line Items]    
Adjusted cost 5,572 5,518
Gross unrealized gains
Gross unrealized losses
Fair value 5,572 5,518
Cash and cash equivalents 5,572 5,518
Short-term investments