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Goodwill and other Identifiable Intangible Assets (Tables) | 12 Months Ended
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Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Amortizable Identifiable Intangible Assets | Amortizable identifiable intangible assets, net as of September 30, 2025 and 2024 were comprised of the following (in thousands):
| September 30, 2025 |  | September 30, 2024
| Gross carrying amount |  | Accum. amort. |  | Net |  | Gross carrying amount |  | Accum. amort. |  | Net
Purchased and core technology | $ | 100,986 |  |  | $ | (67,533) |  |  | $ | 33,453 |  |  | $ | 85,041 |  |  | $ | (63,654) |  |  | $ | 21,387 |
License agreements | 112 |  |  | (112) |  |  | — |  |  | 112 |  |  | (112) |  |  | — |
Patents and trademarks | 45,468 |  |  | (24,870) |  |  | 20,598 |  |  | 40,335 |  |  | (22,047) |  |  | 18,288 |
Customer relationships | 408,198 |  |  | (111,561) |  |  | 296,637 |  |  | 309,223 |  |  | (95,989) |  |  | 213,234 |
Non-compete agreements | 600 |  |  | (600) |  |  | — |  |  | 600 |  |  | (600) |  |  | — |
Order backlog | 1,000 |  |  | (1,000) |  |  | — |  |  | 1,000 |  |  | (1,000) |  |  | — |
Total | $ | 556,364 |  |  | $ | (205,676) |  |  | $ | 350,688 |  |  | $ | 436,311 |  |  | $ | (183,402) |  |  | $ | 252,909 |
Schedule of Amortization Expense | Amortization expense for fiscal years 2025, 2024 and 2023 was as follows (in thousands):
Fiscal year | Total
2025 | $ | 22,141 |
2024 | 24,552 |
2023 | $ | 25,226 |
Schedule of Estimated Future Amortization Expense Related to Identifiable Intangible Assets | Estimated amortization expense for the next five fiscal years is as follows (in thousands):
Fiscal year | Total
2026 | $ | 28,504 |
2027 | 28,504 |
2028 | 28,296 |
2029 | 26,412 |
2030 | $ | 26,009 |
Schedule of Changes in Carrying Amount of Goodwill | The changes in the carrying amount of goodwill by reportable segments are (in thousands):
| IoT Products & Services |  | IoT Solutions |  | Total
Balance on September 30, 2023 | $ | 173,957 |  |  | $ | 167,636 |  |  | $ | 341,593 |
Foreign currency translation adjustment | 1,136 |  |  | 45 |  |  | 1,181 |
Balance on September 30, 2024 | $ | 175,093 |  |  | $ | 167,681 |  |  | $ | 342,774 |
Acquisition | — |  |  | 50,209 |  |  | 50,209 |
Foreign currency translation adjustment | 173 |  |  | (284) |  |  | (111) |
Balance on September 30, 2025 | $ | 175,266 |  |  | $ | 217,606 |  |  | $ | 392,872 |

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