Note 10 - Fair Value Measurements (Details) - Significant Weighted Average Assumptions	9 Months Ended
Oct. 31, 2013
Outstanding and Contingent Warrants [Member]
Note 10 - Fair Value Measurements (Details) - Significant Weighted Average Assumptions [Line Items]
Risk free interest rate	1.87%
Average expected life	6 years 270 days
Expected volatility	113.59%
Derivative Financial Instruments, Liabilities [Member]
Note 10 - Fair Value Measurements (Details) - Significant Weighted Average Assumptions [Line Items]
Risk free interest rate	0.12%
Average expected life	1 year 29 days
Expected volatility	72.43%

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Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

+ Details

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- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

+ References

+ Details

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- Definition

Risk-free interest rate assumption used in valuing an instrument.

+ References

+ Details

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