Note 4 - Intangible Assets (Details Textual) (USD $)	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
Amortization of Intangible Assets	$ 1,224,000	$ 1,224,000	$ 2,448,000	$ 2,419,000
Tax Purposes [Member]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	15 years