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Note 12 - Basic and Diluted Earnings Per Share (Details) - USD ($)
 3 Months Ended 9 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Equity Option [Member]        
Potentially dilutive securities outstanding at period end excluded from the diluted computation as the inclusion would have been antidilutive:        
Options (in shares) 1,405,250 1,215,000 1,405,250 1,215,000
Warrant [Member]        
Potentially dilutive securities outstanding at period end excluded from the diluted computation as the inclusion would have been antidilutive:        
Options (in shares) 1,627,945 1,627,945 1,627,945 1,627,945
(Loss) income available to common stockholders $ (63,947) $ 1,942,815 $ 732,198 $ 2,600,304
Weighted average common shares outstanding (in shares) 33,152,714 33,041,142 33,214,242 33,067,515
Assumed exercise of dilutive options and warrants (in shares)   144,422 524,374 274,796
Weighted average dilutive shares outstanding (in shares) 33,152,714 33,185,564 33,738,616 33,342,311
Basic (loss) income per common share (in dollars per share) $ 0 $ 0.06 $ 0.02 $ 0.08
Diluted (loss) income per common share (in dollars per share) $ 0 $ 0.06 $ 0.02 $ 0.08
Options (in shares) 3,033,195 2,842,945 3,033,195 2,842,945