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Goodwill and other Identifiable Intangible Assets (Tables) | 12 Months Ended
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Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Amortizable Identifiable Intangible Assets | Amortizable identifiable intangible assets, net as of September 30, 2023 and 2022 were comprised of the following (in thousands):
| September 30, 2023 |  | September 30, 2022
| Gross carrying amount |  | Accum. amort. |  | Net |  | Gross carrying amount |  | Accum. amort. |  | Net
Purchased and core technology | $ | 85,032 |  |  | $ | (59,833) |  |  | $ | 25,199 |  |  | $ | 85,016 |  |  | $ | (55,854) |  |  | $ | 29,162 |
License agreements | 112 |  |  | (112) |  |  | — |  |  | 112 |  |  | (112) |  |  | — |
Patents and trademarks | 39,957 |  |  | (19,888) |  |  | 20,069 |  |  | 39,711 |  |  | (17,666) |  |  | 22,045 |
Customer relationships | 309,196 |  |  | (77,380) |  |  | 231,816 |  |  | 309,212 |  |  | (58,355) |  |  | 250,857 |
Non-compete agreements | 600 |  |  | (600) |  |  | — |  |  | 600 |  |  | (600) |  |  | — |
Order backlog | 1,000 |  |  | (1,000) |  |  | — |  |  | 1,000 |  |  | (1,000) |  |  | — |
Total | $ | 435,897 |  |  | $ | (158,813) |  |  | $ | 277,084 |  |  | $ | 435,651 |  |  | $ | (133,587) |  |  | $ | 302,064 |
Schedule of Amortization Expense | Amortization expense for fiscal years 2023, 2022 and 2021 was as follows (in thousands):
Fiscal year | Total
2023 | $ | 25,226 |
2022 | $ | 27,195 |
2021 | $ | 16,534 |
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
2024 (twelve months) | $ | 25,232 |
2025 | $ | 21,776 |
2026 | $ | 21,544 |
2027 | $ | 20,593 |
2028 | $ | 20,411 |
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, 2021 | $ | 175,180 |  |  | $ | 50,342 |  |  | $ | 225,522 |
Acquisitions | — |  |  | 118,635 |  |  | 118,635 |
Adjustments | 186 |  |  | (631) |  |  | (445) |
Foreign currency translation adjustment | (2,435) |  |  | (800) |  |  | (3,235) |
Balance on September 30, 2022 | $ | 172,931 |  |  | $ | 167,546 |  |  | $ | 340,477 |
Foreign currency translation adjustment | 1,026 |  |  | 90 |  |  | 1,116 |
Balance on September 30, 2023 | $ | 173,957 |  |  | $ | 167,636 |  |  | $ | 341,593 |

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