Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended	6 Months Ended
	Apr. 30, 2013	Jan. 31, 2014	Jul. 31, 2013
Goodwill And Other Intangible Assets [Abstract]
Goodwill impairment	$ 0
Intangible assets, net		38,622,000	41,307,000
Decrease of balance from other intangible assets		2,700,000
Amortization of existing intangible assets		$ 2,600,000