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Revenue From Contracts With Customers (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended
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Apr. 02, 2021 | Apr. 03, 2020
Revenue from Contract with Customer [Abstract] |  |
Percent of revenue from contract with customer compared to total revenue | 35.00% | 30.00%
Contract with customer, asset, cumulative catch-up adjustment to revenue, modification of contract | $ 4.5 |
Revenue recognized that was included in contract liability balance at beginning of period | $ 0.9 | $ 0.1

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- Definition Percent Of Revenue From Contract With Customer Compared To Total Revenue + References No definition available. + Details
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Period Type: | duration

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- Definition Amount of increase (decrease) in revenue recognized for cumulative catch-up adjustment from contract modification which increases (decreases) right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Period Type: | duration