CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 23, 2016	Jan. 24, 2015	Jan. 23, 2016	Jan. 24, 2015
REVENUES:
Contract revenues	$ 559,470	$ 441,081	$ 1,218,738	$ 951,470
EXPENSES:
Costs of earned revenues, excluding depreciation and amortization	450,284	355,429	957,263	758,898
General and administrative (including stock-based compensation expense of $4.2 million and $3.7 million, respectively)	47,020	41,815	98,484	86,511
Depreciation and amortization	29,898	23,264	57,347	46,193
Total	527,202	420,508	1,113,094	891,602
Interest expense, net	(7,872)	(6,730)	(17,003)	(13,480)
Loss on debt extinguishment			(16,260)	0
Other income, net	1,072	1,735	2,542	3,530
Income before income taxes	25,468	15,578	74,923	49,918
Provision (benefit) for income taxes:
Current	(17,418)	1,309	5,184	18,308
Deferred	27,413	4,837	23,442	1,371
Total provision for income taxes	9,995	6,146	28,626	19,679
Net income	$ 15,473	$ 9,432	$ 46,297	$ 30,239
Earnings per common share:
Basic earnings per common share (in dollars per share)	$ 0.47	$ 0.28	$ 1.41	$ 0.89
Diluted earnings per common share (in dollars per share)	$ 0.46	$ 0.27	$ 1.37	$ 0.86
Shares used in computing earnings per common share:
Basic (in shares)	32,662,942	34,125,829	32,767,088	34,067,983
Diluted (in shares)	33,520,136	35,127,398	33,703,438	35,122,530