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, 2013	Jul. 31, 2012	Jul. 31, 2011
Income Taxes [Abstract]
Gross unrecognized tax benefits at beginning of fiscal year	$ 16,514	$ 20,005	$ 18,994
Additions for tax positions of the current year	5,453	3,323	7,406
Additions for tax positions of prior years	407	261	668
Reductions for tax positions of prior years	(1,640)	(4,462)	(4,059)
Settlements	(277)
Reductions due to a lapse of applicable statute of limitations	(2,038)	(2,613)	(3,004)
Gross unrecognized tax benefits at end of fiscal year	$ 18,419	$ 16,514	$ 20,005