Goodwill and Intangible Assets (Tables)

3 Months Ended

Dec. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of changes in the carrying value of goodwill

The following table summarizes the changes in the carrying value of goodwill:

	GSG			CIG			Total
	(in thousands)
Balance at September 30, 2018	$	389,741		$	409,079		$	798,820
Translation and other	(3,563		)	(12,693		)	(16,256		)
Balance at December 30 2018	$	386,178		$	396,386		$	782,564

Summary of gross amount and accumulated amortization of acquired identifiable intangible assets with finite useful lives

The gross amount and accumulated amortization of our acquired identifiable intangible assets with finite useful lives included in “Intangible assets - net” on our consolidated balance sheets, were as follows:

	December 30, 2018						September 30, 2018
	Weighted- Average Remaining Life (in Years)	Gross Amount		Accumulated Amortization			Gross Amount		Accumulated Amortization
	($ in thousands)
Non-compete agreements	—	$	—	$	—		$	83	$	(83	)
Client relations	2.6	54,057		(47,534		)	54,639		(46,449		)
Backlog	0.4	22,991		(21,544		)	23,371		(20,007		)
Trade names	3.0	7,972		(3,958		)	8,144		(3,575		)
Total		$	85,020	$	(73,036	)	$	86,237	$	(70,114	)

Schedule of estimated amortization expense for remainder of fiscal and succeeding years

Estimated amortization expense for the remainder of fiscal 2019 and succeeding years is as follows:

	Amount
	(in thousands)
2019	$	4,954
2020	3,331
2021	2,249
2022	1,021
2023	429
Total	$	11,984