Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Oct. 26, 2013	Oct. 27, 2012
Cash flows from operating activities:
Net loss	$ (73,793)	$ (39,327)
Adjustments to reconcile net loss to net cash flows from operating activities:
Depreciation and amortization (including amortization of deferred financing fees)	111,552	118,339
Stock-based compensation expense	5,681	11,207
Deferred taxes	(188)	15,507
Loss on disposal of property and equipment	259
Non-cash impairment charge		1,973
Decrease in other long-term liabilities	(11,715)	49,508
Changes in operating assets and liabilities, net	113,988	31,481
Net cash flows provided by operating activities	145,784	188,688
Cash flows from investing activities:
Purchases of property and equipment	(70,137)	(66,953)
Other investing activities, net		(4,100)
Net decrease in other noncurrent assets	2,038	30
Net cash flows used in investing activities	(68,099)	(71,023)
Cash flows from financing activities:
Net proceeds from Microsoft Commercial Agreement financing arrangement	42,397
Net increase in credit facility	28,000	14,200
Proceeds from exercise of common stock options		2,042
Purchase of treasury stock	(3,578)	(1,082)
Cash dividends paid to shareholders	(7,884)	(7,884)
Excess tax benefit from stock-based compensation	164	198
Net proceeds from issuance of Preferred Membership interests		291,724
Net cash flows provided by financing activities	59,099	299,198
Net increase in cash and cash equivalents	136,784	416,863
Cash and cash equivalents at beginning of period	160,470	54,131
Cash and cash equivalents at end of period	297,254	470,994
Changes in operating assets and liabilities, net:
Receivables, net	(43,937)	(63,555)
Merchandise inventories	(181,126)	(234,367)
Prepaid expenses and other current assets	(27,747)	(57,324)
Accounts payable and accrued liabilities	366,798	386,727
Changes in operating assets and liabilities, net	113,988	31,481
Supplemental cash flow information:
Interest paid	10,418	13,073
Income taxes (net of refunds)	574	2,291
Non-cash financing activity:
Accrued dividend on redeemable preferred stock	$ 3,942	$ 3,942