Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)	6 Months Ended
	Jan. 31, 2013	Jul. 31, 2012
Goodwill And Other Intangible Assets [Abstract]
Intangible assets, net	$ 44,229,000	$ 46,200,000
Decrease of balance from other intangible assets	2,000,000
Amortization of existing intangible assets	2,800,000
Foreign exchange translation increase of intangible assets	$ 800,000