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Income Taxes - Unrecognized Tax Benefits (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 27, 2013
Income Tax Disclosure [Abstract]
Unrecognized tax benefits that, if recognized, would impact effective tax rate	$ 29
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	66
Increases for positions related to the prior years	263
Increases for positions related to the current year	100
Decreases for positions related to the prior years	0
Lapsing of statutes of limitations	(36)
Ending balance	393
Unrecognized tax benefits that are expected to be recognized within twelve months of the balance sheet date	0
Accrued for interest on income tax matters	60
Accrued for penalties on income tax matters	0
Interest expense reversal related to unrecognized tax provision	1
Expense for penalties	$ 0

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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This element represents the amount of statutory penalties accrued as of the date of the statement of financial position for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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