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Summary of Significant Accounting Policies (Tables) | 3 Months Ended
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Mar. 31, 2014
Accounting Policies [Abstract] |
Basic and Diluted Net Loss per Share Computations | The following is a reconciliation of the numerators and denominators of the basic and diluted net loss per share computations:
|  | Three months ended March 31, |
|  | 2014 |  |  | 2013 |
Net loss |  | $ | (7,620,256 | ) |  | $ | (6,416,447 | )
Weighted average shares outstanding used to compute basic and diluted net income or loss per share |  |  | 55,343,877 |  |  |  | 38,263,434 |
Basic and diluted net loss per share |  | $ | (0.14 | ) |  | $ | (0.17 | )
Outstanding Options, Warrants and Restricted Stock Units | The following outstanding potentially dilutive securities were excluded from the computation of diluted net income or loss per share because the effect would have been anti-dilutive as of March 31:
|  | 2014 |  |  | 2013 |
Options |  |  | 381,851 |  |  |  | 443,926 |
Restricted stock units |  |  | 3,144,940 |  |  |  | 1,236,982 |
Warrants |  |  | 16,267,659 |  |  |  | 9,601,378 |
Total |  |  | 19,794,450 |  |  |  | 11,282,286 |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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