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Note 10 - Stockholders' Equity (Tables) | 9 Months Ended
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Jun. 30, 2014
Stockholders' Equity Note [Abstract] |
Schedule of Stockholders Equity [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Additional |  |  |  |  |  |  | Total |
|  | Common Stock |  |  | Paid-in |  |  | Accumulated |  |  | Stockholders' |
|  | Shares |  |  | Amount |  |  | Capital |  |  | Deficit |  |  | Equity |
Balances, September 30, 2013 |  |  | 32,900,705 |  |  | $ | 329 |  |  | $ | 87,434,834 |  |  | $ | (62,673,754 | ) |  | $ | 24,761,409 |
Issuance of common stock upon exercise of stock options, net |  |  | 357,476 |  |  |  | 4 |  |  |  | 193,060 |  |  |  |  |  |  |  | 193,064 |
Share-based compensation expense |  |  |  |  |  |  |  |  |  |  | 488,958 |  |  |  |  |  |  |  | 488,958 |
Repurchase of common stock |  |  | (256,082 | ) |  |  | (3 | ) |  |  | (476,491 | ) |  |  |  |  |  |  | (476,494 | )
Net income |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,600,304 |  |  |  | 2,600,304 |
Balances, June 30, 2014 |  |  | 33,002,099 |  |  | $ | 330 |  |  | $ | 87,640,361 |  |  | $ | (60,073,450 | ) |  | $ | 27,567,241 |

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- Definition Tabular disclosure of changes in the separate accounts comprising stockholders' equity (in addition to retained earnings) and of the changes in the number of shares of equity securities during at least the most recent annual fiscal period and any subsequent interim period presented is required to make the financial statements sufficiently informative if both financial position and results of operations are presented. + References Reference 1: 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 + Details
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