VARIABLE INTEREST ENTITIES (VIE) (Details Text) (USD $)	May 31, 2013	May 31, 2012	Aug. 31, 2011	Jan. 18, 2011
VARIABLE INTEREST ENTITIES (VIE) [Abstract]
Appraised market price of an adjacent building				$ 2,700,000
Carrying value of building(s)	3,591,781	3,707,653
Carrying value of GRE's debt	3,366,108	3,623,070
Carrying value of preferred stock			5,000,000
Carrying value of GLOG's debt			$ 3,559,932