Summary Of Significant Accounting Policies (Components Of Inventory) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2013	Jul. 31, 2012
Summary Of Significant Accounting Policies [Abstract]
Raw materials	$ 99,814	$ 111,808
Work in process	29,097	30,767
Finished products	105,909	113,541
Total inventories	$ 234,820	$ 256,116