XML 24 R30.htm IDEA: XBRL DOCUMENT v3.2.0.727
NOTE 4. INVESTMENTS (Details) - USD ($)
$ in Thousands
May. 31, 2015
May. 31, 2014
Current    
Unrealized Gain $ 0 $ 0
Unrealized Loss 0 0
Long-term Marketable equity securities    
Unrealized Gain 81 139
Unrealized Loss $ 0 $ (228)