v2.4.0.6

Note 9 - Income Taxes (Detail) - Deferred Tax Assets and Liabilities (USD $) In Thousands, unless otherwise specified | Jan. 31, 2013 | Jan. 31, 2012
--- | --- | ---
Deferred tax assets: |  |
Inventory | $ 277 | $ 748
Property and equipment, principally due to differing depreciation methods | 206 | 671
Accruals and reserves | 184 | 300
Net research and manufacturer investment credit carryforwards | 2,563 | 2,576
Net operating losses | 14,322 | 11,894
AMT credit carryforwards | 126 | 126
Stock based compensation | 69 | 796
Other | 2 | 19
Total gross deferred tax assets | 17,749 | 17,130
Less: valuation allowance | $ (17,749) | $ (17,130)

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