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Supplemental Financial Information (Major Customers and Products) (Details) - customer	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017	Dec. 30, 2017
Sales Revenue, Resale of Products
Concentration Risk [Line Items]
Concentration Risk, Percentage				91.00%
Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration Risk, Number of Customers			3		3
Customer A | Sales Revenue, Product Line | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration Risk, Percentage	28.00%		20.00%
Customer A | Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration Risk, Percentage			29.00%		15.00%
Customer B | Sales Revenue, Product Line | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration Risk, Percentage		16.00%
Customer B | Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration Risk, Percentage			18.00%		13.00%
Customer C | Sales Revenue, Product Line | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration Risk, Percentage				11.00%
Customer C | Accounts Receivable | Customer Concentration Risk
Concentration Risk [Line Items]
Concentration Risk, Percentage			11.00%		12.00%

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592

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-Name Accounting Standards Codification
-Topic 825
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-Section 50
-Paragraph 21
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