CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 28, 2012	Jul. 30, 2011	Jul. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 91,342	$ 76,673	$ 68,321
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	39,560	35,296	27,483
Deferred income tax (benefit) expense	(6,115)	15,520	5,061
Share-based compensation	11,372	9,159	8,057
Excess tax benefits from share-based payment arrangements	(2,804)	(1,545)	(1,822)
(Gain) loss on disposals of property and equipment	(313)	(42)	229
Impairment on long-term assets		5,790
Impairment on indefinite lived intangibles		200
Unrealized gain (loss) on foreign exchange	(468)	318	(61)
Realized gain on hedge related to Canadian acquisition			(2,814)
Provision for doubtful accounts	3,532	635	1,149
Changes in assets and liabilities, net of acquired companies:
Accounts receivable	(51,193)	(39,791)	(21,599)
Inventories	(62,822)	(66,283)	(55,803)
Prepaid expenses and other assets	15,050	(12,283)	(3,284)
Accounts payable	16,095	9,583	32,491
Accrued expenses	13,008	16,614	8,724
Net cash provided by operating activities	66,244	49,844	66,132
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(31,492)	(40,778)	(55,109)
Purchases of acquired businesses, net of cash acquired	(3,297)	(22,061)	(66,556)
Cash proceeds from hedge related to Canadian acquisition			2,814
Proceeds from disposals of property and equipment	332	96	180
Net cash used in investing activities	(34,457)	(62,743)	(118,671)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from common stock issuance		138,301
Net (repayments) borrowings under notes payable		(127,570)	42,570
Repayments of long-term debt	(47,447)	(5,033)	(5,412)
Increase in bank overdraft	8,673	1,739	9,982
Proceeds from exercise of stock options	7,571	10,162	8,481
Payment of employee restricted stock tax withholdings	(1,526)	(2,808)	(1,338)
Excess tax benefits from share-based payment arrangements	2,804	1,545	1,822
Capitalized debt issuance costs	(2,905)		(68)
Net cash provided by (used in) financing activities	(32,830)	16,336	56,037
Effect of exchange rate changes on cash and cash equivalents	298	(372)	35
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(745)	3,065	3,533
Cash and cash equivalents at beginning of period	16,867	13,802	10,269
Cash and cash equivalents at end of period	16,122	16,867	13,802
Cash paid during the period for:
Interest, net of amounts capitalized	4,734	4,752	4,465
Federal and state income taxes, net of refunds	$ 52,666	$ 42,018	$ 35,538