CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 26, 2013	Oct. 27, 2012
OPERATING ACTIVITIES:
Net income	$ 18,660	$ 11,861
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	23,552	15,311
Bad debt expense, net	186	9
Gain on sale of fixed assets	(1,865)	(1,581)
Deferred income tax provision (benefit)	113	(1,217)
Stock-based compensation	3,506	2,266
Amortization of premium on long-term debt	(91)	0
Amortization of debt issuance costs and other	465	329
Excess tax benefit from share-based awards	(656)	(64)
Change in operating assets and liabilities:
Accounts receivable, net	(52,397)	(12,015)
Costs and estimated earnings in excess of billings, net	(17,202)	8,838
Other current assets and inventory	(8,740)	(3,509)
Other assets	(430)	(62)
Income taxes receivable/payable	8,101	8,773
Accounts payable	871	3,879
Accrued liabilities, insurance claims, and other liabilities	7,234	(5,102)
Net cash provided by operating activities	(18,693)	27,716
INVESTING ACTIVITIES:
Capital expenditures	(30,288)	(12,523)
Proceeds from sale of assets	2,465	2,006
Changes in restricted cash	(305)	0
Net cash used in investing activities	(28,128)	(10,517)
FINANCING ACTIVITIES:
Proceeds from borrowings on Senior Credit Agreement	164,000	0
Principal payments on Senior Credit Agreement	(131,563)	0
Repurchases of common stock	0	(15,203)
Exercise of stock options and other	10,124	166
Restricted stock tax withholdings	(609)	(62)
Excess tax benefit from share-based awards	656	64
Principal payments on capital lease obligations	0	(19)
Net cash provided by financing activities	42,608	(15,054)
Net (decrease) increase in cash and equivalents	(4,213)	2,145
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	18,607	52,581
CASH AND EQUIVALENTS AT END OF PERIOD	14,394	54,726
Cash paid during the period for:
Interest	1,517	489
Income taxes	4,311	85
Purchases of capital assets included in accounts payable or other accrued liabilities at period end	$ 3,384	$ 2,364