Note 7 - Income Per Share (Detail) - Income Per Share (USD $)	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Net income (in Dollars)	$ 2,334,287	$ 488,393
Weighted average common shares outstanding	17,806,739	18,036,619
Common stock equivalents	39,888	33,782
Diluted shares	337,525	514,275
Basic (in Dollars per share)	$ 0.13	$ 0.03
Diluted (in Dollars per share)	$ 0.13	$ 0.03
Earnings Per Share, Diluted [Member]
Diluted shares	17,846,627	18,070,041