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Goodwill and Intangible Assets (Tables)
3 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill [Table Text Block]
CommunicationsResidentialInfrastructure SolutionsCommercial & IndustrialTotal
Goodwill at December 31, 2021$2,816 $51,370 $38,209 $— $92,395 
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Estimated Useful Lives (in Years)December 31, 2021
Gross Carrying AmountAccumulated AmortizationNet
Trademarks/trade names5-20$15,262 $(3,323)$11,939 
Technical library20400 (166)234 
Customer relationships6-1596,879 (26,980)69,899 
Non-competition arrangements540 (27)13 
Backlog and construction contracts14,957 (4,949)
Total intangible assets$117,538 $(35,445)$82,093 
Estimated Useful Lives (in Years)September 30, 2021
Gross Carrying AmountAccumulated AmortizationNet
Trademarks/trade names5-20$15,262 $(2,891)$12,371 
Technical library20400 (161)239 
Customer relationships6-1596,879 (24,021)72,858 
Non-competition arrangements540 (25)15 
Backlog and construction contracts14,957 (4,821)136 
Total intangible assets$117,538 $(31,919)$85,619