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Preferred Stock Warrants and Warrant Liability (Details) | Dec. 31, 2010
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Information relating Preferred Stock Warrants |
Remaining Number Outstanding | 41,558,259
Series C Warrants-2008 Loan and Security Agreement [Member] |
Information relating Preferred Stock Warrants |
Remaining Number Outstanding | 280,803
Exercise price | 0.7345
Series D Warrants-2009 Convertible Debt [Member] |
Information relating Preferred Stock Warrants |
Remaining Number Outstanding | 4,368,948
Exercise price | 0.1198
Series D Warrants-Series D Preferred Stock Issuance [Member] |
Information relating Preferred Stock Warrants |
Remaining Number Outstanding | 8,347,236
Exercise price | 0.1198
Series D Warrants-1st Amendment [Member] |
Information relating Preferred Stock Warrants |
Remaining Number Outstanding | 6,243,362
Exercise price | 0.1198
Series D Warrants-2nd Amendment [Member] |
Information relating Preferred Stock Warrants |
Remaining Number Outstanding | 8,694,558
Exercise price | 0.1198
Series D Warrants-3rd Amendment [Member] |
Information relating Preferred Stock Warrants |
Remaining Number Outstanding | 4,462,227
Exercise price | 0.1198
Series D Warrants-5th Amendment [Member] |
Information relating Preferred Stock Warrants |
Remaining Number Outstanding | 2,260,440
Exercise price | 0.1198
Series D Warrants-6th Amendment [Member] |
Information relating Preferred Stock Warrants |
Remaining Number Outstanding | 6,900,685
Exercise price | 0.1198

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- Definition The exercise price of each class 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=6881521&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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- Definition Aggregate amount of each class of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph i -Article 4 + Details
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