CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Oct. 28, 2012	Oct. 23, 2011
Operating activities:
Net income (loss)	$ 8	$ (3,780)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	33,672	43,334
Amortization of deferred financing costs	3,369	2,909
Amortization of debt discount	106	102
Deferred income taxes	(427)	(2,505)
Stock compensation expense	2,904	4,439
Valuation allowance	1,500
Gain on derivative instruments	(310)	(29)
(Gain) loss on disposal of assets	(52)	46
Changes in operating assets and liabilities:
Sales (purchases) of trading securities	666	(4,933)
Accounts receivable	(1,131)	1,329
Insurance receivable	7,497	(7,924)
Income tax receivable	(2,562)	541
Prepaid expenses and other assets	(7,761)	(1,273)
Accounts payable and accrued liabilities	19,047	1,153
Net cash provided by operating activities	56,526	33,409
Investing activities:
Purchase of property and equipment	(89,519)	(34,326)
Purchase of intangible asset	(5,000)
Restricted cash and investments	(512)	107
Net cash used in investing activities	(95,031)	(34,219)
Financing activities:
Principal payments on debt	(10,067)	(2,780)
Net borrowings (repayments) on line of credit	38,000	(5,000)
Payment of deferred financing costs	(8,410)	(394)
Proceeds from exercise of stock options		13
Net cash provided by (used in) financing activities	19,523	(8,161)
Net decrease in cash and cash equivalents	(18,982)	(8,971)
Cash and cash equivalents, beginning of period	94,461	75,178
Cash and cash equivalents, end of the period	$ 75,479	$ 66,207