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Definite-lived Intangibles (Detail) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 28, 2020 | Dec. 30, 2019
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | $ 445,150 | $ 445,150
Accumulated Amortization | (152,870) | (119,470)
Net Carrying Amount | 292,280 | 325,680
Customer Relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | 397,500 | 396,270
Accumulated Amortization | (140,552) | (111,272)
Net Carrying Amount | $ 256,948 | $ 284,998
Weighted Average Amortization Period | 10 years 10 months 24 days | 11 years
Customer Relationships | Acquired Intangible Assets |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount |  | $ 1,230
Accumulated Amortization |  | (31)
Net Carrying Amount |  | $ 1,199
Weighted Average Amortization Period |  | 5 years
Technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount | $ 47,650 | $ 39,500
Accumulated Amortization | (12,318) | (8,064)
Net Carrying Amount | $ 35,332 | $ 31,436
Weighted Average Amortization Period | 9 years 6 months | 9 years 4 months 24 days
Technology | Acquired Intangible Assets |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross Amount |  | $ 8,150
Accumulated Amortization |  | (103)
Net Carrying Amount |  | $ 8,047
Weighted Average Amortization Period |  | 10 years

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + 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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