Significant Accounting Policies (Detail) - Reconciliation of the numerators and denominators of the basic and diluted earnings per share (USD $)	3 Months Ended
	Aug. 31, 2012	Aug. 31, 2011
Numerator:
Income from continuing operations (in Dollars)	$ 291,640	$ 117,792
Denominator for basic net income per common share	6,952,339	6,868,339
Effect of dilutive securities:
Options and warrants	350,795	35,014
Denominator for diluted net income per common share	7,303,134	6,903,353
Basic net income per common share (in Dollars per share)	$ 0.04	$ 0.02
Diluted net income per common share (in Dollars per share)	$ 0.04	$ 0.02