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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Dec. 29, 2019
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 29, 2019 |  | $ | 441,802 |  |  | $ | 483,018 |  |  | $ | 924,820 |
Translation |  | 2,502 |  |  | 9,746 |  |  | 12,248 |
Balance at December 29, 2019 |  | $ | 444,304 |  |  | $ | 492,764 |  |  | $ | 937,068 |
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 29, 2019 |  | September 29, 2019
| Weighted- Average Remaining Life (in Years) |  | Gross Amount |  | Accumulated Amortization |  | Gross Amount |  | Accumulated Amortization
| ($ in thousands)
Client relations | 2.8 |  | $ | 57,065 |  |  | $ | (51,401 | ) |  | $ | 56,779 |  |  | $ | (50,455 | )
Backlog | 1.2 |  | 33,112 |  |  | (27,312 | ) |  | 32,229 |  |  | (24,968 | )
Trade names | 2.2 |  | 7,919 |  |  | (5,302 | ) |  | 7,714 |  |  | (4,859 | )
Total |  |  | $ | 98,096 |  |  | $ | (84,015 | ) |  | $ | 96,722 |  |  | $ | (80,282 | )
Schedule of Estimated Amortization Expense for Remainder of Fiscal and Succeeding Years | Estimated amortization expense for the remainder of fiscal 2020 and succeeding years is as follows:
| Amount
| (in thousands)
2020 | $ | 6,770 |
2021 | 4,729 |
2022 | 1,660 |
2023 | 922 |
Total | $ | 14,081 |

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- Definition Tabular disclosure of the characteristics, including gross value, accumulated amortization amount, weighted average useful life, of finite-lived intangible assets acquired during the period by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + References No definition available. + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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