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Commitments and Contingencies (Narrative) (Details)		6 Months Ended
	Jan. 26, 2016 USD ($) patent	Jun. 29, 2018 USD ($)
Gain Contingencies [Line Items]
Gain (Loss) Related to Litigation Settlement		$ 0
Product Warranty Description		The Company generally warrants that its products will meet customer specifications and will be free from defects in materials and workmanship.
Positive Outcome of Litigation [Member]
Gain Contingencies [Line Items]
Gain Contingency, Patents Found Infringed upon, Number | patent	2
Amount awarded from other party	$ 37,500,000

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Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

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Amount awarded from other party in judgment or settlement of litigation.

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Describes the nature of the product warranty, including the approximate term of the product warranty, how the product warranty arose, and the events or circumstances that would require the warrantor to perform under the product warranty.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913245&loc=d3e12069-110248

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

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