Goodwill and Intangible Assets (Tables)

3 Months Ended

Dec. 28, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amount of goodwill are as follows:

(in thousands)	Electrical Raceway			Mechanical Products & Solutions		Total
Balance as of October 1, 2018	$	133,566		$	36,563	$	170,129
Goodwill acquired during year	9,456			—		9,456
Exchange rate effects	(788		)	—		(788		)
Balance as of December 28, 2018	$	142,234		$	36,563	$	178,797

Schedule of Finite-Lived Intangible Assets

The following table provides the gross carrying value, accumulated amortization and net carrying value for each major class of intangible assets:

		December 28, 2018							September 30, 2018
($ in thousands)	Weighted Average Useful Life (Years)	Gross Carrying Value		Accumulated Amortization			Net Carrying Value		Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Amortizable intangible assets:
Customer relationships	10	$	339,581	$	(148,773	)	$	190,808	$	330,295	$	(141,401	)	$	188,894
Other	8	18,086		(6,571		)	11,515		16,003		(5,861		)	10,142
Total		357,667		(155,344		)	202,323		346,298		(147,262		)	199,036
Indefinite-lived intangible assets:
Trade names		92,880		—			92,880		92,880		—			92,880
Total		$	450,547	$	(155,344	)	$	295,203	$	439,178	$	(147,262	)	$	291,916

Schedule of Indefinite-Lived Intangible Assets

The following table provides the gross carrying value, accumulated amortization and net carrying value for each major class of intangible assets:

		December 28, 2018							September 30, 2018
($ in thousands)	Weighted Average Useful Life (Years)	Gross Carrying Value		Accumulated Amortization			Net Carrying Value		Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Amortizable intangible assets:
Customer relationships	10	$	339,581	$	(148,773	)	$	190,808	$	330,295	$	(141,401	)	$	188,894
Other	8	18,086		(6,571		)	11,515		16,003		(5,861		)	10,142
Total		357,667		(155,344		)	202,323		346,298		(147,262		)	199,036
Indefinite-lived intangible assets:
Trade names		92,880		—			92,880		92,880		—			92,880
Total		$	450,547	$	(155,344	)	$	295,203	$	439,178	$	(147,262	)	$	291,916

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Expected amortization expense for intangible assets for the remainder of fiscal 2019 and over the next five years and thereafter is as follows:

(in thousands)
Remaining 2019	$	26,106
2020	30,310
2021	30,176
2022	28,843
2023	28,791
2024	24,094
Thereafter	34,003