Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Oct. 28, 2012	Oct. 23, 2011	Oct. 28, 2012	Oct. 23, 2011	Apr. 29, 2012
Discontinued operations
Valuation allowance			$ 1,500
Results of discontinued operations
Loss from discontinued operations	(2,312)	(427)	(395)	(191)
Biloxi casino
Discontinued operations
Sale price					45,000
Valuation allowance			1,500
Results of discontinued operations
Net revenues	14,043	16,045	31,611	34,248
Pretax loss from discontinued operations	(2,312)	(695)	(395)	(1,168)
Income tax benefit from discontinued operations		268		977
Loss from discontinued operations	(2,312)	(427)	(395)	(191)
Current assets:
Accounts receivable, net	479		479
Prepaid expenses and other assets	1,578		1,578
Total current assets	2,057		2,057
Property and equipment, net	43,500		43,500
Total assets	45,557		45,557
Current liabilities
Accounts payable	1,553		1,553
Other accrued liabilities	6,488		6,488
Total current liabilities	8,041		8,041
Net assets	$ 37,516		$ 37,516