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Note 9 - Income Taxes (Details) (USD $)
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12 Months Ended | |
|---|---|---|
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Jan. 31, 2014
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Jan. 31, 2013
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| Note 9 - Income Taxes (Details) [Line Items] | ||
| Deferred Tax Assets, Tax Credit Carryforwards, Research | $ 2,308,000 | $ 2,563,000 |
| Deferred Tax Assets, Operating Loss Carryforwards, Domestic | 40,700,000 | |
| Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 33,600,000 | |
| Valuation Allowances and Reserves, Period Increase (Decrease) | (1,100,000) | |
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Domestic [Member]
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| Note 9 - Income Taxes (Details) [Line Items] | ||
| Deferred Tax Assets, Tax Credit Carryforwards, Research | 1,700,000 | |
|
State [Member]
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| Note 9 - Income Taxes (Details) [Line Items] | ||
| Deferred Tax Assets, Tax Credit Carryforwards, Research | $ 2,100,000 |