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Acquired Intangible Assets | 12 Months Ended
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Sep. 30, 2024
Acquired Intangible Assets |
Acquired Intangible Assets | 8. Acquired Intangible Assets As of September 30, 2024 and 2023, intangible assets are as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2024 | ​ | September 30, 2023
​ | ​ | Weighted | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Average | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Average | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Remaining | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Remaining | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Amortization | ​ | ​ | ​ | Accumulated | ​ | ​ | ​ | Amortization | ​ | ​ | ​ | Accumulated | ​ | ​
​ |  | Period |  | Gross |  | Amortization |  | Net |  | Period |  | Gross |  | Amortization |  | Net
​ | ​ | (Amounts in thousands)
Customer list |  | 0 years | ​ | $ | — | ​ | $ | — | ​ | $ | — |  | 1 year | ​ | $ | 90 | ​ | $ | (89) | ​ | $ | 1
Patent | ​ | 8 years | ​ | $ | 60 | ​ | $ | (10) | ​ | $ | 50 |  | 9 years | ​ | $ | 51 | ​ | $ | (6) | ​ | $ | 45
​ Amortization expense on these intangible assets was $6 thousand and $15 thousand for the years ended September 30, 2024 and 2023, respectively. There were additions of $10 and $51 thousand for the years ended Septembe 30, 2024 and 2023. These additions were at our HPP segment related to our ARIA cybersecurity products. Annual amortization expense related to intangible assets for each of the following successive fiscal years is as follows:
​ | ​ | ​ | ​
Fiscal year ending September 30: |  | (Amounts in thousands)
2025 |  | $ | 5
2026 | ​ | ​ | 5
2027 | ​ | ​ | 5
2028 | ​ | ​ | 5
2028 | ​ | ​ | 5
Thereafter | ​ | ​ | 25
Total | ​ | $ | 50
​ ​ ​

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