Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Jan. 27, 2013	Jan. 22, 2012	Jan. 27, 2013	Jan. 22, 2012
Discontinued operations
Valuation allowance			$ 1,500
Results of discontinued operations
Loss from discontinued operations	(1,184)	(866)	(1,579)	(1,057)
Biloxi casino
Discontinued operations
Valuation allowance			1,500
Results of discontinued operations
Net revenues	4,496	14,927	36,107	49,175
Pretax loss from discontinued operations	(1,184)	(1,414)	(1,579)	(2,581)
Income tax benefit from discontinued operations		548		1,524
Loss from discontinued operations	$ (1,184)	$ (866)	$ (1,579)	$ (1,057)

Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): 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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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Amount of income (loss) from a disposal group, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount allocable to noncontrolling interests. Includes, net of tax, 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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