CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Oct. 29, 2016	Oct. 24, 2015
REVENUES:
Contract revenues	$ 799,223	$ 659,268
EXPENSES:
Costs of earned revenues, excluding depreciation and amortization	614,990	506,978
General and administrative (including stock-based compensation expense of $5.7 million and $4.5 million, respectively)	60,204	51,464
Depreciation and amortization	34,546	27,449
Total	709,740	585,891
Interest expense, net	(9,067)	(9,131)
Loss on debt extinguishment	0	(16,260)
Other income, net	940	1,469
Income before income taxes	81,356	49,455
Provision (benefit) for income taxes:
Current	28,694	22,602
Deferred	1,612	(3,971)
Total provision for income taxes	30,306	18,631
Net income	$ 51,050	$ 30,824
Earnings per common share:
Basic earnings per common share (in dollars per share)	$ 1.62	$ 0.94
Diluted earnings per common share (in dollars per share)	$ 1.59	$ 0.91
Shares used in computing earnings per common share:
Basic (in shares)	31,429,493	32,871,240
Diluted (in shares)	32,200,287	33,886,747