Note 14 - Variable Interest Entities ("vies"): Statements of income of the consolidated VIEs (Details) (USD $)	6 Months Ended
	Nov. 30, 2012	Nov. 30, 2011
Variable Interest Entity Other Income and Gains	$ 45,359	$ 45,321
Variable Interest Entity Service Costs	(2,391,397)	(2,484,147)
Variable Interest Entity Administrative and Other Expenses	(195,650)	(425,885)
Variable Interest Entity Personnel Cost	(353,123)	(458,475)
Variable Interest Entity Depreciation Expense	(110,273)	(109,678)
Variable Interest Entity Income Before Provision For Income Taxes	328,071	394,779
Variable Interest Entity Provision For Income Taxes	(53,238)	(14,366)
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity, Measure of Activity, Revenues	3,333,155	3,827,643
Net Income (Loss) Attributable to Noncontrolling Interest	$ 274,833	$ 380,413