CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Oct. 28, 2017	Oct. 29, 2016
OPERATING ACTIVITIES:
Net income	$ 28,776	$ 51,050
Adjustments to reconcile net income to net cash provided by operating activities, net of acquisitions:
Depreciation and amortization	42,651	34,546
Deferred income tax provision	518	1,612
Stock-based compensation	7,380	5,707
Bad debt expense, net	205	82
Gain on sale of fixed assets	(6,495)	(1,443)
Amortization of debt discount	4,547	4,307
Amortization of debt issuance costs and other	859	815
Excess tax benefit from share-based awards	0	(879)
Change in operating assets and liabilities:
Accounts receivable, net	21,868	(2,404)
Costs and estimated earnings in excess of billings, net	(19,944)	(115,498)
Other current assets and inventory	(7,730)	(13,635)
Other assets	1,010	132
Income taxes receivable/payable	15,439	13,881
Accounts payable	(5,339)	1,083
Accrued liabilities, insurance claims, and other liabilities	(26,918)	(20,915)
Net cash provided by operating activities	56,827	(41,559)
INVESTING ACTIVITIES:
Capital expenditures	(56,023)	(40,080)
Proceeds from sale of assets	8,838	2,323
Changes in restricted cash and other	(900)	(463)
Net cash used in investing activities	(48,085)	(38,220)
FINANCING ACTIVITIES:
Proceeds from borrowings on senior credit agreement, including term loans	0	206,000
Principal payments on senior credit agreement, including term loans	(4,813)	(138,000)
Repurchases of common stock	(16,875)	0
Exercise of stock options	204	202
Restricted stock tax withholdings	(1,335)	(1,378)
Excess tax benefit from share-based awards	0	879
Net decrease in cash and equivalents	(22,819)	67,703
Net decrease in cash and equivalents	(14,077)	(12,076)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	38,608	33,787
CASH AND EQUIVALENTS AT END OF PERIOD	24,531	21,711
SUPPLEMENTAL DISCLOSURE OF OTHER CASH FLOW ACTIVITIES AND NON-CASH INVESTING AND FINANCING ACTIVITIES:
Cash paid for interest	5,248	4,924
Cash paid for taxes, net	554	15,381
Purchases of capital assets included in accounts payable or other accrued liabilities at period end	$ 4,077	$ 6,870