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Warrant Liability - Summary of Warrant Liability (Detail) (USD $) | Mar. 31, 2014
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Class of Warrant or Right [Line Items] |
Number Outstanding | 9,551,378
Outstanding warrants [Member] |
Class of Warrant or Right [Line Items] |
Fair Value | $ 5,868,000
Series A Warrants [Member] |
Class of Warrant or Right [Line Items] |
Number Outstanding | 8,116,895
Exercise Price per share | 1.40
Series A Warrants [Member] | Outstanding warrants [Member] |
Class of Warrant or Right [Line Items] |
Fair Value | 5,868,433
November 2008 Financing [Member] |
Class of Warrant or Right [Line Items] |
Number Outstanding | 1,034,483
Exercise Price per share | 23.00
November 2008 Financing [Member] | Outstanding warrants [Member] |
Class of Warrant or Right [Line Items] |
Fair Value |
November 2009 Financing [Member] |
Class of Warrant or Right [Line Items] |
Number Outstanding | 400,000
Exercise Price per share | 15.00
November 2009 Financing [Member] | Outstanding warrants [Member] |
Class of Warrant or Right [Line Items] |
Fair Value |

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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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- Definition Number 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)) -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 -Article 4 + Details
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- Definition Fair value of financial and nonfinancial obligations. + 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 (a) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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