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Goodwill and Other Identifiable Intangible Assets, Net (Tables) | 6 Months Ended
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Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Amortizable Intangible Assets | Amortizable intangible assets were (in thousands):
| March 31, 2022 |  | September 30, 2021
| Gross carrying amount |  | Accum. amort. |  | Net |  | Gross carrying amount |  | Accum. amort. |  | Net
Purchased and core technology | $ | 85,194 |  |  | $ | (53,425) |  |  | $ | 31,769 |  |  | $ | 69,162 |  |  | $ | (50,701) |  |  | $ | 18,461 |
License agreements | 112 |  |  | (112) |  |  | — |  |  | 112 |  |  | (112) |  |  | — |
Patents and trademarks | 39,608 |  |  | (16,276) |  |  | 23,332 |  |  | 23,491 |  |  | (14,978) |  |  | 8,513 |
Customer relationships | 309,292 |  |  | (48,846) |  |  | 260,446 |  |  | 130,278 |  |  | (39,973) |  |  | 90,305 |
Non-compete agreements | 600 |  |  | (600) |  |  | — |  |  | 600 |  |  | (600) |  |  | — |
Order backlog | 1,000 |  |  | (750) |  |  | 250 |  |  | 1,000 |  |  | (250) |  |  | 750 |
Total | $ | 435,806 |  |  | $ | (120,009) |  |  | $ | 315,797 |  |  | $ | 224,643 |  |  | $ | (106,614) |  |  | $ | 118,029 |
Schedule of Estimated Future Amortization Expense Related to Intangible Assets | Estimated amortization expense related to intangible assets for the remainder of fiscal 2022 and the five succeeding fiscal years is (in thousands):
2022 (six months) | $ | 13,716 |
2023 | $ | 24,996 |
2024 | $ | 24,282 |
2025 | $ | 20,825 |
2026 | $ | 20,593 |
2027 | $ | 18,582 |
Schedule of Changes in Carrying Amount of Goodwill | The changes in the carrying amount of goodwill by reportable segments are (in thousands):
| Six months ended March 31, 2022
| IoT Products and Services |  | IoT Solutions |  | Total
Balance on September 30, 2021 | $ | 175,180 |  |  | $ | 50,342 |  |  | $ | 225,522 |
Acquisition | — |  |  | 116,890 |  |  | 116,890 |
Adjustment | (515) |  |  | — |  |  | (515) |
Foreign currency translation adjustment | (413) |  |  | 161 |  |  | (252) |
Balance at March 31, 2021 | $ | 174,252 |  |  | $ | 167,393 |  |  | $ | 341,645 |

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