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Income Taxes - Unrecognized Tax Benefits (Details) (USD $)	12 Months Ended
	Apr. 27, 2013	May 03, 2014
Income Tax Disclosure [Abstract]
Unrecognized tax benefits that, if recognized, would impact effective tax rate		$ 600,000
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	400,000	600,000
Increases for positions related to the prior years	100,000
Increases for positions related to the current year	100,000
Decreases for positions related to the prior years	0
Lapsing of statutes of limitations	0
Ending balance	600,000	600,000
Accrued for interest on income tax matters		100,000
Accrued for penalties on income tax matters		$ 0

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of interest expense accrued for an underpayment of income taxes.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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