Variable Interest Entities ("vies"): Variable Interest Entities Statement of Income (Details) (USD $)	3 Months Ended
	Aug. 31, 2012	Aug. 31, 2011
Variable Interest Entity, Measure of Activity, Revenues	$ 1,961,932	$ 963,045
Variable Interest Entity Other Income and Gains	(3,071)	19,663
Variable Interest Entity Service Costs	(1,460,892)	(365,126)
Variable Interest Entity Administrative and Other Expenses	(134,617)	(234,347)
Variable Interest Entity Personnel Cost	(181,555)	(229,031)
Variable Interest Entity Depreciation Expense	(55,049)	(54,429)
Variable Interest Entity Income Before Provision For Income Taxes	126,748	99,775
Variable Interest Entity Provision For Income Taxes	(3,303)	(2,266)
Variable Interest Entity, Measure of Activity, Operating Income or Loss	$ 123,445	$ 97,509