Note 5 - Intangible Assets (Details Textual) - USD ($)	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Asset, Useful Life	5 years
Finite Lived Intangible Asset, Useful Life for Tax Purposes	15 years
Amortization of Intangible Assets	$ 1,224,000	$ 1,259,000