Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Details) - Schedule of stock options outstanding

v3.5.0.2
Stockholders' Equity (Details) - Schedule of stock options outstanding - $ / shares
12 Months Ended
Jul. 31, 2016
Jul. 31, 2015
Jul. 31, 2014
Jul. 31, 2013
Stockholders' Equity (Details) - Schedule of stock options outstanding [Line Items]        
Shares (in Shares) 1,808,875 1,358,104 1,155,910 726,645
Weighted-Average Exercise Price (in Dollars per share) $ 3.43 $ 3.04 $ 5.03 $ 10.39
Exercise Price Range 1 [Member]        
Stockholders' Equity (Details) - Schedule of stock options outstanding [Line Items]        
Range of Exercise prices 2.53      
Range of Exercise prices $ 4.00      
Shares (in Shares) 1,272,903      
Weighted-Average Remaining Contractual Life in years 1 year 18 days      
Weighted-Average Exercise Price (in Dollars per share) $ 2.99      
Exercise Price Range 2 [Member]        
Stockholders' Equity (Details) - Schedule of stock options outstanding [Line Items]        
Range of Exercise prices 4.01      
Range of Exercise prices $ 5.61      
Shares (in Shares) 535,972      
Weighted-Average Remaining Contractual Life in years 204 days      
Weighted-Average Exercise Price (in Dollars per share) $ 4.49