v2.4.0.8

Note 8 - Fair Value Measurements (Details) - Changes in Fair Value of Level 3 Financial Instruments (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Jan. 31, 2014 | Jan. 31, 2013
Note 8 - Fair Value Measurements (Details) - Changes in Fair Value of Level 3 Financial Instruments [Line Items] |  |
Balance | $ 2,520 | $ 2,466
Change in estimated fair value recognized in results of operations | (570) |
Recorded New Derivative Liabilities | 624 |
Broadwood Warrants1 [Member] |  |
Note 8 - Fair Value Measurements (Details) - Changes in Fair Value of Level 3 Financial Instruments [Line Items] |  |
Balance | 2,426 | 2,466
Change in estimated fair value recognized in results of operations | (40) |
Elkhorn Conversion Features [Member] |  |
Note 8 - Fair Value Measurements (Details) - Changes in Fair Value of Level 3 Financial Instruments [Line Items] |  |
Balance | 94 | 0
Change in estimated fair value recognized in results of operations | (530) |
Recorded New Derivative Liabilities | $ 624 |

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