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Capital Stock and Stock-Based Awards (Details) - Schedule of capital stock - shares
May. 31, 2015
May. 31, 2014
Capital Stock and Stock-Based Awards (Details) - Schedule of capital stock [Line Items]    
Authorized 70,000,000 70,000,000
Authorized 2,000,000 2,000,000
Outstanding 31,477,251 30,605,978
Common Class A [Member]    
Capital Stock and Stock-Based Awards (Details) - Schedule of capital stock [Line Items]    
Authorized 4,000,000  
Reserved for Issuance 1,166,000  
Outstanding 1,656,200  
Common Stock [Member]    
Capital Stock and Stock-Based Awards (Details) - Schedule of capital stock [Line Items]    
Authorized 70,000,000  
Reserved for Issuance 8,823,910  
Outstanding 31,477,251  
Preferred Stock [Member]    
Capital Stock and Stock-Based Awards (Details) - Schedule of capital stock [Line Items]    
Authorized 2,000,000  
Reserved for Issuance 0  
Outstanding 0