Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Jul. 31, 2013
Goodwill And Other Intangible Assets [Abstract]
Goodwill impairment		$ 0
Intangible assets, net	37,508,000		37,508,000	41,307,000
Decrease of balance from intangible assets	3,800,000
Amortization of existing intangible assets			$ 3,900,000