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Goodwill and Intangible Assets (Tables)
9 Months Ended
Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill [Table Text Block]
The following summarizes changes in the carrying value of goodwill by segment during the nine months ended June 30, 2024:

CommunicationsResidentialInfrastructure SolutionsCommercial & IndustrialTotal
Goodwill at September 30, 2023$2,816 $51,370 $38,209 $— $92,395 
Acquisitions— — 2,148 — 2,148 
Goodwill at June 30, 2024$2,816 $51,370 $40,357 $— $94,543 
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Intangible assets consist of the following:
Estimated Useful Lives (in Years)June 30, 2024
Gross Carrying AmountAccumulated AmortizationNet
Trademarks/trade names5-20$13,821 $(6,568)$7,253 
Technical library20400 (216)184 
Customer relationships6-1592,926 (51,497)41,429 
Non-competition arrangements540 (40)— 
Backlog and construction contracts14,018 (3,376)642 
Total intangible assets$111,205 $(61,697)$49,508 

Estimated Useful Lives (in Years)September 30, 2023
Gross Carrying AmountAccumulated AmortizationNet
Trademarks/trade names5-20$14,621 $(6,973)$7,648 
Technical library20400 (201)199 
Customer relationships6-1591,426 (43,065)48,361 
Non-competition arrangements540 (40)— 
Backlog and construction contracts14,958 (4,958)— 
Total intangible assets$111,445 $(55,237)$56,208