Note 9 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Mar. 31, 2015	Sep. 30, 2015
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Valuation Allowance	$ 659,000		$ 659,000		$ 659,000
Unrecognized Tax Benefits	0		0
Income Tax Expense (Benefit)	$ 744,000	$ 200,000	$ 1,374,000	$ 773,000
Effective Income Tax Rate Reconciliation, Percent	34.10%	40.90%	32.70%	36.30%