CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Jul. 31, 2014	Jul. 31, 2013
Allowance for doubtful accounts (in Dollars)	$ 2,142	$ 2,707
Preferred Stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred Stock, shares authorized	25,000,000	25,000,000
Preferred Stock, shares issued	0	0
Preferred Stock, shares outstanding	0	0
Common Stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	75,000,000	75,000,000
Common Stock, shares issued	44,239,183	40,569,393