Note 11 - Stockholders' Equity (Details Textual) - USD ($)				3 Months Ended		9 Months Ended
	May 10, 2016	Feb. 04, 2016	Dec. 03, 2015	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Share Buyback Program [Member]
Stock Repurchase Program, Authorized Amount				$ 4,000,000		$ 4,000,000
New Share Buyback Program [Member]
Stock Repurchase Program, Authorized Amount				$ 4,000,000		$ 4,000,000
Stock Repurchased and Retired During Period, Shares						1,099,608
Stock Repurchased During Period, Value						$ 1,748,456
Common Stock, Dividends, Per Share, Declared	$ 0.01	$ 0.01	$ 0.01	$ 0.01		$ 0.03
Dividends, Common Stock				$ 317,989		$ 954,650