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Cash, Cash Equivalents and Marketable Securities | 12 Months Ended
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Sep. 30, 2025
Cash and Cash Equivalents [Abstract] |
Cash, Cash Equivalents and Marketable Securities | Cash, Cash Equivalents and Marketable Securities The following is a summary of cash, cash equivalents and marketable securities at September 30, 2025 and 2024:
| September 30, 2025 |  | September 30, 2024
| Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
| (In thousands)
Cash and Cash Equivalents: |  |  |  |  |  |  |
Cash | $ | 134,130 |  |  | $ | 134,130 |  |  | $ | 142,768 |  |  | $ | 142,768 |
Money market funds | 6 |  |  | 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 |
The assets included in marketable securities represent long-term marketable equity securities held under a supplemental retirement and savings plan for certain officers and senior management employees, which are distributed upon termination or retirement of the employees. These investments are treated as trading securities and recorded at fair value.

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- Definition The entire disclosure of cash, cash equivalent, and debt and equity securities, including realized and unrealized gain (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/320/tableOfContent + Details
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