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Related Parties - Additional Information (Detail) (USD $)
9 Months Ended
Apr. 30, 2013
Aug. 27, 2007
Aug. 01, 2007
Related Party Transaction [Line Items]      
Sale of shares without exercise of put option 200,000    
Payments to David Lee of the proceeds $ 1,000,000    
Additional payments to David Lee 50.00%    
Subsidiaries [Member]
     
Related Party Transaction [Line Items]      
Equity Method Investment, Ownership Percentage 20.00%    
Put Option [Member]
     
Related Party Transaction [Line Items]      
Selling of shares through put option to David lee 200,000    
Expiration Date of put option Jan. 01, 2015    
Price per share $ 2    
Symbio Investment Corporation [Member]
     
Related Party Transaction [Line Items]      
Strategic investment in Symbio   400,000 500,000
Strategic investment in Symbio, shares   200,000 250,000
Percentage of shares 4.00% 4.00%  
Compensation for Mr. Lee's services 45,000    
Increase in investments and a capital contribution by David lee $ 90,000