Note 14 - Variable Interest Entities ("vies"): Statements of income of the consolidated VIEs (Details) (USD $)	3 Months Ended		9 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2013	Feb. 29, 2012
Other income and gains	$ 55,946	$ 104,412	$ 134,242	$ 173,029
Service costs	1,484,462	1,408,761	3,892,206	3,979,566
Personnel cost	226,957	284,550	656,168	808,726
Depreciation expense	162,345	159,891	484,742	484,577
Provision for income taxes	77,465	126,764	166,390	247,846
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity, Measure of Activity, Revenues			5,347,191	6,079,597
Other income and gains			32,949	92,372
Service costs			(3,875,423)	(3,889,162)
Selling, General and Administrative Expense			(280,298)	(674,514)
Personnel cost			(538,180)	(692,676)
Depreciation expense			(164,736)	(166,439)
Income (Loss) from Continuing Operations before Income Taxes, Domestic			521,503	749,178
Provision for income taxes			(28,136)	(52,166)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest			$ 493,367	$ 697,012