CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Oct. 29, 2016	Oct. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 29,217	$ 30,131
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Depreciation and amortization	21,215	16,704
Share-based compensation	6,653	5,973
Loss on disposals of property and equipment	265	194
Excess tax deficit (benefit) from share-based payment arrangements	1,421	(414)
Provision for doubtful accounts	626	3,207
Non-cash interest income	(96)	(102)
Changes in assets and liabilities, net of acquired businesses:
Accounts receivable	(43,272)	(19,866)
Inventories	(55,127)	(100,387)
Prepaid expenses and other assets	1,581	4,455
Accounts payable	33,913	58,395
Accrued expenses and other liabilities	(3,651)	7,202
Net cash (used in) provided by operating activities	(7,255)	5,492
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(9,198)	(7,588)
Purchases of acquired businesses, net of cash acquired	(10,074)	(17)
Net cash used in investing activities	(19,272)	(7,605)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayments of long-term debt	(367)	(2,890)
Proceeds from borrowings under revolving credit line	94,356	122,650
Repayments of borrowings under revolving credit line	(99,408)	(169,591)
Increase in bank overdraft	29,787	47,084
Proceeds from exercise of stock options		921
Payment of employee restricted stock tax withholdings	(1,160)	(1,576)
Excess tax (deficit) benefit from share-based payment arrangements	(1,421)	414
Capitalized debt issuance costs	(180)	0
Net cash provided by (used in) financing activities	21,607	(2,988)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	(117)	14
NET DECREASE IN CASH AND CASH EQUIVALENTS	(5,037)	(5,087)
Cash and cash equivalents at beginning of period	18,593	17,380
Cash and cash equivalents at end of period	13,556	12,293
Supplemental disclosures of cash flow information:
Cash paid for interest	4,522	4,354
Cash paid for federal and state income taxes, net of refunds	$ 2,873	$ 1,768