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Note 13 - Shareholders Equity (Details) - Original Warrants Exercise Price | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | --- | --- | ---
Class of Warrant or Right [Line Items] |  |  |  |  |
Exercise price | 0.44 |  | 0.76 | 1.43 | 1.42
2012 Private Placement [Member] |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Original exercise price | 0.54 |  |  |  |
Exercise price | 0.43 |  | 0.54 |  |
2009 Strategic Alliance [Member] |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Original exercise price | 0.65 |  |  |  |
Exercise price | 0.40 |  | 0.49 |  |
2008 Private Placement [Member] |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Original exercise price | 3.08 |  |  |  |
Exercise price |  | [1] | 1.97 |  |
[1] | The warrants issued in the 2008 Private Placement expired in March 2013.

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Subparagraph 4 -Article 4 + Details
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