CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Oct. 25, 2014	Oct. 26, 2013
REVENUES:
Contract revenues	$ 510,389	$ 512,720
EXPENSES:
Costs of earned revenues, excluding depreciation and amortization	403,468	410,119
General and administrative (including stock-based compensation expense of $3.9 million and $3.5 million, respectively)	44,696	43,075
Depreciation and amortization	22,930	23,552
Total	471,094	476,746
Interest expense, net	(6,749)	(6,886)
Other income, net	1,795	2,012
INCOME BEFORE INCOME TAXES	34,341	31,100
PROVISION (BENEFIT) FOR INCOME TAXES:
Current	16,999	12,327
Deferred	(3,465)	113
Total	13,534	12,440
NET INCOME	$ 20,807	$ 18,660
EARNINGS PER COMMON SHARE:
Basic earnings per common share (usd per share)	$ 0.61	$ 0.56
Diluted earnings per common share (usd per share)	$ 0.59	$ 0.54
SHARES USED IN COMPUTING EARNINGS PER COMMON SHARE:
Basic (in shares)	34,010,147	33,423,678
Diluted (in shares)	35,117,673	34,638,998