Revenue - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019	Dec. 29, 2019
Deferred Sales Commissions
Revenue from Contract with Customer [Line Items]
Capitalized contract cost	$ 1.0		$ 1.0		$ 1.5
Capitalized contract cost, amortization	0.2	$ 0.4	0.8	$ 1.3
Deferred Fulfillment Costs
Revenue from Contract with Customer [Line Items]
Capitalized contract cost	4.0		4.0		$ 3.6
Capitalized contract cost, amortization	$ 5.3	$ 3.8	$ 14.9	$ 10.3

[Line Items] for Revenue from Contract with Customer [Table]

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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, before accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-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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