Income Taxes (Components Of Provision (Benefit) For Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Income Tax Disclosure [Abstract]
Current federal	$ 12,668	$ 8,082	$ 25,753
Current state	5,501	1,565	3,991
Current Foreign Tax Expense (Benefit)	3,581	0	0
Total current	21,750	9,647	29,744
Deferred federal	11,534	5,470	(7,175)
Deferred state	1,623	749	(950)
Deferred Foreign Income Tax Expense (Benefit)	(189)	0	0
Deferred Income Tax Expense (Benefit)	12,968	6,219	(8,125)
Provision for income taxes	$ 34,718	$ 15,866	$ 21,619