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Note 3 - Stock Compensation (Detail) - Transactions Related to Stock Options Granted Under These Plans (USD $)
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Apr. 30, 2013
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Jan. 31, 2013
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|---|---|---|
| Number of Shares | 764,500 | 764,500 |
| Weighted-Average Exercise Price (in Dollars per share) | $ 1.48 | $ 1.48 |
| Stock Options Exercisable at April 30, 2013 | 212,100 | |
| Stock Options Exercisable at April 30, 2013 (in Dollars per share) | $ 4.00 |
| 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
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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