Note 5 - Intangible Assets (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Tax Purposes [Member]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			15 years
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			5 years
Amortization of Intangible Assets	$ 1,259,000	$ 1,223,000	$ 3,777,000	$ 3,671,000