CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
	May 03, 2014	Apr. 27, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 92,107,000	$ 75,777,000
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	35,427,000	31,242,000
Share-based compensation	13,137,000	11,027,000
Gain on disposals of property and equipment	(59,000)	(663,000)
Excess tax benefits from share-based payment arrangements	(2,459,000)	(88,000)
Impairment of intangible asset	0	1,629,000
Provision for doubtful accounts	2,771,000	2,385,000
Deferred income taxes	3,165,000	1,767,000
Non-cash interest expense	1,767,000	0
Changes in assets and liabilities, net of acquired businesses:
Accounts receivable	(81,467,000)	(58,497,000)
Inventories	(126,613,000)	(143,563,000)
Prepaid expenses and other assets	(6,251,000)	(14,829,000)
Accounts payable	48,107,000	51,588,000
Accrued expenses and other liabilities	(279,000)	6,201,000
Net cash used in operating activities	(20,647,000)	(36,024,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(107,945,000)	(34,753,000)
Purchases of acquired businesses, net of cash acquired	(23,032,000)	(9,445,000)
Proceeds from disposals of property and equipment	6,061,000	2,345,000
Net cash used in investing activities	(124,916,000)	(41,853,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of long-term debt	(707,000)	(479,000)
Proceeds from borrowings under revolving credit line	535,218,000	478,698,000
Repayments of borrowings under revolving credit line	(397,093,000)	(418,621,000)
Increase in bank overdraft	12,711,000	17,398,000
Proceeds from exercise of stock options	2,125,000	1,681,000
Payment of employee restricted stock tax withholdings	(3,709,000)	(3,381,000)
Excess tax benefits from share-based payment arrangements	2,459,000	88,000
Net cash provided by financing activities	151,004,000	75,384,000
EFFECT OF EXCHANGE RATE CHANGES ON CASH	25,000	247,000
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	5,466,000	(2,246,000)
Cash and cash equivalents at beginning of period	11,111,000	16,122,000
Cash and cash equivalents at end of period	16,577,000	13,876,000
Supplemental disclosures of cash flow information:
Cash paid for interest	4,812,000	3,657,000
Cash paid for federal and state income taxes, net of refunds	$ 52,880,000	$ 47,083,000