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Segment, Customers, and Geographic Information - Major Customer Accounts Receivable as Percentage of Accounts Receivable (Detail) - Accounts Receivable [Member] - Credit Concentration Risk [Member]	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Jun. 24, 2017
Customer A [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	14.00%	17.00%
Customer B [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	12.00%	15.00%
Customer C [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	12.00%
Customer D [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	11.00%
Customer E [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage		13.00%
Customer F [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage		10.00%

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ 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

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

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