Income Taxes (Schedule Of Reconciliation Of Beginning And Ending Amount Of Gross Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Income Taxes [Abstract]
Gross unrecognized tax benefits at beginning of fiscal year	$ 18,419	$ 16,514	$ 20,005
Additions for tax positions of the current year	2,959	5,453	3,323
Additions for tax positions of prior years	1,706	407	261
Reductions for tax positions of prior years	(7,113)	(1,640)	(4,462)
Settlements	(240)	(277)
Reductions due to a lapse of applicable statute of limitations	(726)	(2,038)	(2,613)
Gross unrecognized tax benefits at end of fiscal year	$ 15,005	$ 18,419	$ 16,514