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Note 13 - Stockholders' Equity (Details) (USD $) | 12 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 Share Buyback Program [Member] | Nov. 30, 2013 Share Buyback Program [Member] | Jul. 31, 2013 Share Buyback Program [Member]
Note 13 - Stockholders' Equity (Details) [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | 612,941 | 526,206 |  |  |
Proceeds from Stock Options Exercised (in Dollars) | $ 544,893 | $ 340,450 |  |  |
Preferred Stock, Shares Authorized | 5,000,000 | 5,000,000 |  |  |
Preferred Stock, Par or Stated Value Per Share (in Dollars per share) | $ 0.00001 | $ 0.00001 |  |  |
Preferred Stock, Shares Outstanding | 0 | 0 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date | Feb. 04, 2016 |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | 1,627,945 | 1,627,945 |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share) | $ 2.67 | $ 2.67 |  |  |
Stock Repurchase Program, Authorized Amount (in Dollars) |  |  |  | 1,000,000 | 3,000,000
Stock Repurchased and Retired During Period, Shares |  |  | 277,157 |  |
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share) |  |  | $ 1.86 |  |
Stock Repurchased During Period, Value (in Dollars) |  |  | $ 516,352 |  |

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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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