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Cash, Cash Equivalents and Marketable Securities (Tables)
 12 Months Ended
Sep. 30, 2025
Cash and Cash Equivalents [Abstract]  
Schedule of Cash, Cash Equivalent, and Investment
The following is a summary of cash, cash equivalents and marketable securities at September 30, 2025 and 2024: 
 September 30, 2025September 30, 2024
 Amortized
Cost		Fair ValueAmortized
Cost		Fair Value
 (In thousands)
Cash and Cash Equivalents:
     Cash$134,130 $134,130 $142,768 $142,768 
     Money market funds6 6 731 731 
     Bank time deposits— — 7,168 7,168 
        Total$134,136 $134,136 $150,667 $150,667 
Marketable Securities:
     Marketable securities$40,603 $54,625 $36,044 $45,289