Goodwill and Intangible Assets (Tables)

12 Months Ended

Oct. 03, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of changes in carrying value of goodwill

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

	GSG		CIG		Total
	(in thousands)
Balance at September 29, 2019	$	441,802	$	483,018	$	924,820
Acquisitions	74,882		5,294		80,176
Impairment	—		(15,800)		(15,800)
Translation and other	(369)		4,671		4,302
Balance at September 27, 2020	516,315		477,183		993,498
Acquisitions	15,112		75,479		90,591
Translation and other	7,006		17,483		24,489
Balance at October 3, 2021	$	538,433	$	570,145	$	1,108,578

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:

	Fiscal Year Ended
	October 3, 2021							September 27, 2020
	Weighted- Average Remaining Life (in years)	Gross Amount		Accumulated Amortization		Net Amount		Gross Amount		Accumulated Amortization		Net Amount
	($ in thousands)
Client relations	7.3	$	69,455	$	(43,984)	$	25,471	$	60,775	$	(53,392)	$	7,383
Backlog	0.7	34,577		(30,670)		3,907		37,682		(32,761)		4,921
Technology and trade names	3.8	14,939		(6,327)		8,612		7,964		(6,325)		1,639
Total		$	118,971	$	(80,981)	$	37,990	$	106,421	$	(92,478)	$	13,943

Estimated amortization expense for the succeeding five years and beyond

Estimated amortization expense for the succeeding five fiscal years and beyond is as follows:

	Amount
	(in thousands)
2022	$	9,664
2023	7,591
2024	4,983
2025	4,348
2026	3,967
Beyond	7,437
Total	$	37,990