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Deferred Costs To Obtain Customer Contracts - Narratives (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Oct. 02, 2020 | Sep. 27, 2019 | Oct. 02, 2020 | Sep. 27, 2019 | Jan. 03, 2020
Capitalized Contract Cost [Line Items] |  |  |  |  |
Deferred costs to obtain customer contracts | $ 47,300,000 |  | $ 47,300,000 |  | $ 45,400,000
Deferred commission |  |  |  |  |
Capitalized Contract Cost [Line Items] |  |  |  |  |
Impairment loss related to deferred commissions | 0 | $ 0 | 0 | $ 0 |
Sales and marketing expense |  |  |  |  |
Capitalized Contract Cost [Line Items] |  |  |  |  |
Amortization expense related to deferred costs to obtain customer contracts | $ 5,700,000 | $ 5,300,000 | $ 16,800,000 | $ 16,200,000 |

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- Definition Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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- Definition Amount of impairment loss for asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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