Goodwill and Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

	Communications		Residential		Infrastructure Solutions		Commercial & Industrial		Total
Goodwill at March 31, 2022	$	2,816	$	51,370	$	38,209	$	—	$	92,395

Schedule of Finite-Lived Intangible Assets [Table Text Block]

	Estimated Useful Lives (in Years)			March 31, 2022
					Gross Carrying Amount		Accumulated Amortization		Net
Trademarks/trade names	5	-	20		$	15,262	$	(3,751)		$	11,511
Technical library	20				400		(171)			229
Customer relationships	6	-	15		96,879		(29,936)			66,943
Non-competition arrangements	5				40		(29)			11
Backlog and construction contracts	1				4,957		(4,957)			—
Total intangible assets					$	117,538	$	(38,844)		$	78,694

	Estimated Useful Lives (in Years)			September 30, 2021
					Gross Carrying Amount		Accumulated Amortization		Net
Trademarks/trade names	5	-	20		$	15,262	$	(2,891)		$	12,371
Technical library	20				400		(161)			239
Customer relationships	6	-	15		96,879		(24,021)			72,858
Non-competition arrangements	5				40		(25)			15
Backlog and construction contracts	1				4,957		(4,821)			136
Total intangible assets					$	117,538	$	(31,919)		$	85,619