Stock Based Compensation (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended
Aug. 02, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)	$ 712,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	2 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	15.8
Share Based Compensation Arrangement By Share Based Payment Award Options And Other Than Options Outstanding Number	2.4
Share Based Compensation Arrangement By Share Based Payment Award Options And Other Than Options Vested And Expected To Vest Exercisable Number	1.8
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	3.0
Intrinsic Value of Stock Awards Outstanding (in Dollars)	737,000
Intrinsic Value of Stock Awards Exercisable (in Dollars)	$ 441,000

Intrinsic Value of Stock Awards Exercisable

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- Definition

Intrinsic value of stock awards outstanding as of the reporting date.

+ References

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- Definition

Share based compensation arrangement by share based payment award options and other than options outstanding number.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award options and other than options vested and expected to vest exercisable number.

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ 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 (i)

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

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ 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 (a)(3)

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

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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

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