Note 12 - Basic and Diluted Earnings Per Share (Details) (USD $)	3 Months Ended	6 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Numerator:
Income available to common stockholders	$ 290,511us-gaap_NetIncomeLoss	$ 525,926us-gaap_NetIncomeLoss	$ 796,145us-gaap_NetIncomeLoss	$ 657,489us-gaap_NetIncomeLoss
Denominator:
Weighted average common shares outstanding (in shares)	33,253,719	33,133,915	33,244,929	33,080,702
Assumed exercise of dilutive options and warrants (in shares)	594,246	906,594	571,876	675,765
Weighted average dilutive shares outstanding (in shares)	33,847,965	34,040,509	33,816,805	33,756,467
Basic income per common share (in dollars per share)	$ 0.01us-gaap_EarningsPerShareBasic	$ 0.02us-gaap_EarningsPerShareBasic	$ 0.02us-gaap_EarningsPerShareBasic	$ 0.02us-gaap_EarningsPerShareBasic
Diluted income per common share (in dollars per share)	$ 0.01us-gaap_EarningsPerShareDiluted	$ 0.02us-gaap_EarningsPerShareDiluted	$ 0.02us-gaap_EarningsPerShareDiluted	$ 0.02us-gaap_EarningsPerShareDiluted
Potentially dilutive securities outstanding at period end excluded from the diluted computation as the inclusion would have been antidilutive:
Options (in shares)	3,046,195	2,773,945	2,946,195	2,863,945
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)	1,418,250	1,146,000	1,318,250	1,236,000
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

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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