The following summarizes the changes in the carrying value of goodwill by segment during the six months ended March 31, 2026:


	Communications		Residential		Infrastructure Solutions			Commercial & Industrial		Total
Goodwill at September 30, 2025	$	12,336	$	51,370	$	44,124		$	—	$	107,830
Acquisitions	—		—		21,360		(1)	—		21,360



Goodwill at March 31, 2026	$	12,336	$	51,370	$	65,484		$	—	$	129,190

(1) On January 16, 2026, the Company acquired all of the outstanding common stock of Gulf Island Fabrication, Inc. for a purchase price of $152,042, net of cash acquired. The valuation of goodwill is preliminary as of the date of this report, and is subject to change.

Intangible assets consist of the following:


	Estimated Useful Lives (in Years)			March 31, 2026
					Gross Carrying Amount		Accumulated Amortization		Net
Trademarks/trade names	5	-	20		$	21,089	$	(9,653)		$	11,436
Technical library	20				400		(251)			149
Customer relationships	1	-	15		117,892		(72,193)			45,699
Non-competition arrangements	5				940		(125)			815
Backlog and construction contracts	1	-	2		1,257		(910)			347
Total intangible assets					$	141,578	$	(83,132)		$	58,446


	Estimated Useful Lives (in Years)			September 30, 2025
					Gross Carrying Amount		Accumulated Amortization		Net
Trademarks/trade names	5	-	20		$	16,199	$	(8,549)		$	7,650
Technical library	20				400		(241)			159
Customer relationships	1	-	15		98,372		(66,024)			32,348
Non-competition arrangements	5				940		(31)			909
Backlog and construction contracts	1	-	2		1,257		(678)			579
Total intangible assets					$	117,168	$	(75,523)		$	41,645