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Shareholders' Equity - Schedule of Restricted Stock Awards and Restricted Stock Units by Grant Year and Vesting Period (Details) - One-third per year, beginning in FY 2015, performance based - 2010 Stock Plan - RSAs and RSUs - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Apr. 28, 2012	May. 02, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awarded (in shares)	100,000
Annual vesting percentage	33.30%
Weighted average value (in dollars per share)	$ 8.10
Probable unearned compensation expense		$ 0.1
Target
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Probable unearned compensation expense		$ 0.1

X

- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Award Annual Vesting Percentage

+ References

No definition available.

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X

- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ References

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+ Details

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



-SubTopic 10



-Section 50



-Paragraph 2



-Subparagraph (c)(2)(iii)(1)



-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 718



-SubTopic 10



-Section 50



-Paragraph 2



-Subparagraph (c)(2)(iii)(1)



-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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.

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