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Note 6 - Stockholders' Equity (Details) - Common Stock Reserved for Future Issuance	Mar. 31, 2014
Class of Stock [Line Items]
Common Stock Reserved for Future Issuance	13,196,641
Warrant [Member]
Class of Stock [Line Items]
Common Stock Reserved for Future Issuance	8,284,826
Equity Incentive Plans [Member]
Class of Stock [Line Items]
Common Stock Reserved for Future Issuance	1,197,529
Series B Convertible Preferred Stock [Member]
Class of Stock [Line Items]
Common Stock Reserved for Future Issuance	3,714,286

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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