CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 25, 2015	Apr. 26, 2014	Apr. 25, 2015	Apr. 26, 2014
REVENUES:
Contract revenues	$ 492,363	$ 426,284	$ 1,443,833	$ 1,329,522
EXPENSES:
Costs of earned revenues, excluding depreciation and amortization	388,239	350,352	1,147,136	1,087,824
General and administrative	44,707	39,162	131,218	120,799
Depreciation and amortization	23,985	22,726	70,179	69,713
Total	456,931	412,240	1,348,533	1,278,336
Interest expense, net	(6,646)	(6,563)	(20,126)	(20,249)
Other income, net	3,471	5,593	7,001	8,200
Income before income taxes	32,257	13,074	82,175	39,137
Provision (benefit) for income taxes:
Current	9,346	7,094	27,654	16,666
Deferred	2,653	(1,915)	4,024	(1,017)
Total provision for income taxes	11,999	5,179	31,678	15,649
Net income	$ 20,258	$ 7,895	$ 50,497	$ 23,488
Earnings per common share:
Basic earnings (loss) per common share (in dollars per share)	$ 0.59	$ 0.23	$ 1.48	$ 0.70
Diluted earnings (loss) per common share (in dollars per share)	$ 0.58	$ 0.23	$ 1.44	$ 0.68
Shares used in computing earnings per common share:
Basic (in shares)	34,107,262	33,860,832	34,081,381	33,707,957
Diluted (in shares)	35,028,956	34,763,035	35,091,644	34,767,400