XML 45 R34.htm IDEA: XBRL DOCUMENT v3.3.1.900

Basis of Presentation (Details)	3 Months Ended	9 Months Ended		12 Months Ended
	Jan. 24, 2015	Jan. 23, 2016	Jan. 24, 2015	Apr. 30, 2016	Apr. 26, 2014
Basis of Presentation
Length of fiscal year				371 days	364 days
Improvement in gross margin due to legal settlement (as a percent)	1.50%	0.30%	0.50%

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- Definition

Represents the percentage improvement in gross margin resulting from a legal settlement.

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No definition available.

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- Definition

Duration of a fiscal period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter.

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No definition available.

+ Details

Name:	us-gaap_FiscalPeriodDuration
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration