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Note C - Shareholders' Equity (Detail) - Option Transaction Summary (USD $)
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6 Months Ended | 12 Months Ended | |||||
|---|---|---|---|---|---|---|---|
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Jun. 30, 2012
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Dec. 31, 2011
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Jun. 30, 2011
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Dec. 31, 2010
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Sep. 30, 2012
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Sep. 30, 2011
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Sep. 30, 2010
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| Outstanding at September 30, 20 (in Shares) | 1,029,176 | 1,126,000 | |||||
| Outstanding at September 30, 20 | $ 3.07 | $ 2.72 | $ 1.41 | ||||
| Granted (in Shares) | 17,000 | 320,920 | |||||
| Granted | $ 4.09 | $ 6.24 | $ 3.44 | $ 2.13 | $ 5.59 | $ 6.26 | |
| Granted | $ 4.12 | $ 4.14 | |||||
| Cancelled or Forfeited (in Shares) | (1,000) | (21,934) | |||||
| Cancelled or Forfeited | $ 6.36 | $ 1.72 | |||||
| Exercised (in Shares) | (178,481) | (233,329) | |||||
| Exercised | $ 1.11 | $ 1.26 | |||||
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Ending Balance [Member]
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|||||||
| Outstanding at September 30, 20 (in Shares) | 1,191,657 | ||||||
| Outstanding at September 30, 20 | $ 2.74 | ||||||
| X | ||||||||||
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- Definition
The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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 number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including 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 price at which grantees can acquire the shares reserved for issuance on stock options awarded. 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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