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Income Taxes - Income Tax Allocation to Continuing and Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 27, 2013	Apr. 28, 2012	Apr. 30, 2011
Income Tax Disclosure [Abstract]
Continuing operations	$ (2,493)	$ 3,236	$ (4,076)
Discontinued operations	0	0	3,493
Income tax (benefit)/expense	$ (2,493)	$ 3,236	$ (583)

X

- Definition

Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy.

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