CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Apr. 28, 2012	Apr. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 66,200	$ 59,495
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	29,077	26,898
Share-based compensation	8,965	7,395
Excess tax benefits from share-based payment arrangements	(792)	(1,519)
Provision for doubtful accounts	3,490	849
Gain on disposals of property and equipment	(309)	(3)
Changes in assets and liabilities, net of acquired businesses:
Accounts receivable	(81,492)	(62,168)
Inventories	(123,288)	(101,778)
Prepaid expenses, notes receivable and other assets	9,935	(393)
Accounts payable	30,484	25,881
Accrued expenses and other liabilities	22,796	12,511
Net cash used in operating activities	(34,934)	(32,832)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(19,994)	(24,456)
Purchases of acquired businesses, net of cash acquired	(3,329)	(21,984)
Proceeds from disposals of property and equipment	328	82
Net cash used in investing activities	(22,995)	(46,358)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from common stock issuance		138,301
Repayments of long-term debt	(3,784)	(3,774)
Net borrowings (repayments) under notes payable	50,000	(65,570)
Increase in bank overdraft	5,421	12,224
Proceeds from exercise of stock options	4,601	9,761
Payment of employee restricted stock tax withholdings	(1,449)	(2,665)
Excess tax benefits from share-based payment arrangements	792	1,519
Net cash provided by financing activities	55,581	89,796
EFFECT OF EXCHANGE RATE CHANGES ON CASH	(317)	(90)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(2,665)	10,516
Cash and cash equivalents at beginning of period	16,867	13,802
Cash and cash equivalents at end of period	14,202	24,318
Supplemental disclosures of cash flow information:
Interest paid, net of amounts capitalized	3,525	3,545
Income taxes paid, net of refunds	$ 31,675	$ 27,674