Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended
	Oct. 31, 2012	Jul. 31, 2012
Goodwill And Other Intangible Assets [Abstract]
Intangible assets, net	$ 45,243,000	$ 46,200,000
Decrease of balance from other intangible assets	1,000,000
Amortization of existing intangible assets	1,400,000
Foreign exchange translation increase of intangible assets	$ 400,000