Note 3 - Summary of the Difference Between Statutory Federal Income Tax Rate and Effective Rate (Details)	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Statutory federal income tax rate	34.00%	34.00%	34.00%
State franchise taxes (net of federal tax benefit)	(23.30%)	(38.30%)	5.00%
State enterprise zone benefits	134.90%
Business meals/gifts	(18.80%)	36.10%	1.00%
Domestic production activity deduction	(2.20%)	(135.70%)	(2.00%)
Dividends received deduction	225.70%	(424.60%)	(10.20%)
Penalties for uncertain and unrecognized tax benefits		115.50%
Prior year true-up	(7.30%)	84.70%
Foreign tax credits	28.40%	(17.90%)	(0.30%)
Effect of state rate change on beginning balance of deferred tax liabilities	(5.00%)		(2.40%)
Others	(5.50%)	(1.30%)	(7.80%)
Effective tax rate	360.90%	(347.50%)	17.30%