XML 22 R43.htm IDEA: XBRL DOCUMENT v3.2.0.727
BUSINESS SEGMENTS (Details) - Geographic information regarding net sales - USD ($)
 12 Months Ended
May. 31, 2015
May. 31, 2014
Net sales:    
Net Sales $ 4,962,373 $ 5,120,451
Europe [Member]    
Net sales:    
Net Sales 2,716,000 2,450,000
UNITED STATES    
Net sales:    
Net Sales 1,042,000 1,256,000
Asia [Member]    
Net sales:    
Net Sales 1,016,000 1,300,000
South America [Member]    
Net sales:    
Net Sales 21,000 19,000
Middle East [Member]    
Net sales:    
Net Sales 143,000 76,000
Other Foreign [Member]    
Net sales:    
Net Sales $ 24,000 $ 19,000