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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] |
| Communications |  | Residential |  | Infrastructure Solutions |  | Commercial & Industrial |  | Total
Balance at September 30, 2023 | 2,816 |  |  | 51,370 |  |  | 38,209 |  |  | — |  |  | 92,395 |
Acquisitions (Note 19) | — |  |  | — |  |  | 1,565 |  |  | — |  |  | 1,565 |
Balance at September 30, 2024 | $ | 2,816 |  |  | $ | 51,370 |  |  | $ | 39,774 |  |  | $ | — |  |  | $ | 93,960 |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  |  |  |  | September 30, 2023
| Estimated Useful Lives (in Years) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net
Trademarks/trade names | 5 | - | 20 |  | $ | 14,621 |  |  | $ | (6,973) |  |  | $ | 7,648 |
Technical library | 20 |  | 400 |  |  | (201) |  |  | 199 |
Customer relationships | 6 | - | 15 |  | 91,426 |  |  | (43,065) |  |  | 48,361 |
Non-competition arrangements | 5 |  | 40 |  |  | (40) |  |  | — |
Backlog and construction contracts | 1 |  | 4,958 |  |  | (4,958) |  |  | — |
Total |  |  | $ | 111,445 |  |  | $ | (55,237) |  |  | $ | 56,208 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Year Ending September 30,
2025 | $ | 13,284 |
2026 | 11,942 |
2027 | 8,466 |
2028 | 5,491 |
2029 | 2,823 |
Thereafter | 3,884 |
Total | $ | 45,890 |

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