Goodwill and Intangible Assets (Tables)

3 Months Ended

Dec. 27, 2020

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 by reportable segment:

	GSG		CIG		Total
	(in thousands)
Balance at September 27, 2020	$	516,315	$	477,183	$	993,498
Translation	5,834		18,577		24,411
Balance at December 27, 2020	$	522,149	$	495,760	$	1,017,909

Summary of acquired identifiable intangible assets with finite useful lives

The following table presents the gross amount and accumulated amortization of our acquired identifiable intangible assets with finite useful lives included in “Intangible assets, net” on the consolidated balance sheets:

	December 27, 2020					September 27, 2020
	Weighted- Average Remaining Life (in Years)	Gross Amount		Accumulated Amortization		Gross Amount		Accumulated Amortization
	($ in thousands)
Client relations	2.8	$	47,222	$	(40,497)	$	60,775	$	(53,392)
Backlog	0.6	30,085		(27,329)		37,682		(32,761)
Trade names	1.9	7,164		(5,752)		7,964		(6,325)
Total		$	84,471	$	(73,578)	$	106,421	$	(92,478)

Estimated amortization expense for the remainder of the fiscal year and the succeeding years

Estimated amortization expense for the remainder of fiscal 2021 and succeeding years is as follows:

	Amount
	(in thousands)
2021	$	5,600
2022	2,741
2023	1,962
2024	590
Total	$	10,893