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Note C - Shareholders' Equity (Details) - Option Transaction Summary (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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| Option Transaction Summary [Abstract] | ||
| Options Outstanding (in Shares) | 1,029,176 | 1,191,657 |
| Options Outstanding, Weighted Average Exercise Price | $ 3.07 | $ 2.74 |
| Granted (in Shares) | 17,000 | |
| Granted, Weighted Average Exercise Price | $ 5.59 | |
| Granted, Weighted Average Fair Value | $ 4.12 | |
| Cancelled or Forfeited (in Shares) | (9,600) | (1,000) |
| Cancelled or Forfeited, Weighted Average Exercise Price | $ 5.77 | $ 6.36 |
| Exercised (in Shares) | (156,057) | (178,481) |
| Exercised, Weighted Average Exercise Price | $ 1.97 | $ 1.11 |
| Options Outstanding (in Shares) | 863,519 | 1,029,176 |
| Options Outstanding, Weighted Average Exercise Price | $ 3.24 | $ 3.07 |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Gross number of share options (or share units) granted during the period. No definition available.
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| X | ||||||||||
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- Definition
The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. 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 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
Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. No definition available.
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| X | ||||||||||
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- Definition
Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. 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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