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Goodwill and Intangible Assets - Gross Amount and Accumulated Amortization of Acquired Finite-lived Intangibles (Details) - USD ($) $ in Thousands | 9 Months Ended |
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Jul. 03, 2022 | Oct. 03, 2021
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | $ 92,026 | $ 118,971
Accumulated Amortization | (58,083) | (80,981)
Net Amount | $ 33,943 | 37,990
Client relations |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted- Average Remaining Life (in Years) | 5 years 8 months 12 days |
Gross Amount | $ 44,287 | 69,455
Accumulated Amortization | (20,847) | (43,984)
Net Amount | $ 23,440 | 25,471
Backlog |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted- Average Remaining Life (in Years) | 9 months 18 days |
Gross Amount | $ 34,088 | 34,577
Accumulated Amortization | (29,811) | (30,670)
Net Amount | $ 4,277 | 3,907
Trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted- Average Remaining Life (in Years) | 3 years 10 months 24 days |
Gross Amount | $ 13,651 | 14,939
Accumulated Amortization | (7,425) | (6,327)
Net Amount | $ 6,226 | $ 8,612

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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