v2.4.0.8

Note 9 - Fair Value Measurements (Details) - Changes in Fair Value of Level 3 Financial Instruments (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Apr. 30, 2014 | Apr. 30, 2013
Note 9 - Fair Value Measurements (Details) - Changes in Fair Value of Level 3 Financial Instruments [Line Items] |  |
Beginning Balance | $ 2,520 | $ 2,466
Change in estimated fair value recognized in results of operations | 1,005 | 767
Recorded New Derivative Liabilities |  | 624
Ending Balance | 3,525 | 3,857
Warrant [Member] | Broadwood Partners, L.P. [Member] |  |
Note 9 - Fair Value Measurements (Details) - Changes in Fair Value of Level 3 Financial Instruments [Line Items] |  |
Beginning Balance | 2,426 |
Change in estimated fair value recognized in results of operations | 799 |
Ending Balance | 3,225 |
Conversion Features [Member] | Elkhorn Partners Limited Partnership [Member] |  |
Note 9 - Fair Value Measurements (Details) - Changes in Fair Value of Level 3 Financial Instruments [Line Items] |  |
Beginning Balance | 94 |
Change in estimated fair value recognized in results of operations | 206 |
Recorded New Derivative Liabilities | 0 |
Ending Balance | $ 300 |

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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13495-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=20225523&loc=SL20225862-175312 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=28370219&loc=SL20226008-175313 + Details
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