CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Statement of Stockholders' Equity [Abstract]
Shares issued for stock plans (in shares)	1,571	1,474	2,394
Total number of shares repurchased (in shares)	3,971	2,281	2,867