|
Note 9 - Fair Value Measurements (Details) - Changes in Fair Value of Level 3 Financial Instruments (USD $)
In Thousands, unless otherwise specified |
6 Months Ended | |||||
|---|---|---|---|---|---|---|
|
Jul. 31, 2014
|
Jul. 31, 2014
Warrant [Member]
Fair Value, Inputs, Level 3 [Member]
Broadwood Partners, L.P. [Member]
|
Jan. 31, 2014
Warrant [Member]
Fair Value, Inputs, Level 3 [Member]
Broadwood Partners, L.P. [Member]
|
Jul. 31, 2014
Conversion Features [Member]
Fair Value, Inputs, Level 3 [Member]
Elkhorn Partners Limited Partnership [Member]
|
Jul. 31, 2014
New Derivative Liabilities [Member]
Fair Value, Inputs, Level 3 [Member]
|
Jul. 31, 2014
Fair Value, Inputs, Level 3 [Member]
|
|
| Note 9 - Fair Value Measurements (Details) - Changes in Fair Value of Level 3 Financial Instruments [Line Items] | ||||||
| Derivative liabilities, beginning | $ 2,294 | $ 2,294 | $ 2,426 | $ 94 | $ 2,466 | $ 2,520 |
| Change in derivative liabilities | (94) | 624 | (94) | |||
| Change in estimated fair value recognized in results of operations | 2,294 | 2,294 | 2,426 | 3,807 | 2,294 | |
| Derivative liabilities, ending | $ (132) | $ 717 | $ (132) | |||