XML 22 R71.htm IDEA: XBRL DOCUMENT v3.2.0.727
14. Segment Information: Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area (Details) - USD ($)
May. 31, 2015
May. 31, 2014
Details    
United States sales $ 29,044,754 $ 30,761,104
Canada sales 919,603 686,530
Mexico/Latin America sales 744,775 1,318,436
Europe sales   183,753
Middle East sales 12,164  
Africa sales 2,960  
Asia/Pacific sales 31,173 124,677
Foreign and domestic sales $ 30,755,429 $ 33,074,500