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Note 7 - Share-Based Payments (Details) - Summary of stock options outstanding and exercisable (USD $)
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12 Months Ended | ||
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2009
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| Summary of stock options outstanding and exercisable [Abstract] | |||
| Shares Outstanding | 276,250 | 1,834,000 | 1,834,000 |
| Exercise Price Per Share (in Dollars per share) | $ 2.57 | $ 1.61 | $ 1.61 |
| Remaining Contractual Term (years) | 4 years 29 days | ||
| Exercisable on September 30, 2013 | 240,000 | ||
| Exercisable on September 30, 2013 (in Dollars per share) | $ 2.64 | ||
| Exercisable on September 30, 2013 | 4 years 29 days | ||
| Exercisable on September 30, 2013 (in Dollars) | $ 1,731,900 | ||
| Shares Exercised | (36,250) | (1,557,750) | |
| Exercise Price Per Share (in Dollars per share) | $ 2.05 | $ 1.44 | |
| Shares Outstanding | 240,000 | 276,250 | 1,834,000 |
| Exercise Price Per Share (in Dollars per share) | $ 2.64 | $ 2.57 | $ 1.61 |
| Remaining Contractual Term (years) | 4 years 29 days | ||
| Aggregate Intrinsic Value (in Dollars) | $ 1,731,900 | ||
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
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| X | ||||||||||
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- Definition
Number of share options (or share units) exercised during the current period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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