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Geographic Information (Details) - USD ($)
6 Months Ended
Nov. 30, 2015
May. 31, 2015
Geographic Information (Details) [Line Items]    
Property, Plant and Equipment, Net $ 394,820 $ 445,386
MEXICO    
Geographic Information (Details) [Line Items]    
Inventory, Gross 777,000 530,000
Property, Plant and Equipment, Net $ 30,000 $ 35,000
Geographic Concentration Risk [Member]    
Geographic Information (Details) [Line Items]    
Concentration Risk, Percentage 10.00%