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Subsequent Events (Details) (USD $) | 12 Months Ended | 2 Months Ended | 3 Months Ended |  |  | 3 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Feb. 28, 2013 Aspire Capital Purchase Agreement [Member] | Mar. 31, 2014 Aspire Capital Purchase Agreement [Member] Issuance of Equity [Member] | Mar. 11, 2014 Aspire Capital Purchase Agreement [Member] Issuance of Equity [Member] | Mar. 07, 2014 Aspire Capital Purchase Agreement [Member] Issuance of Equity [Member] | Mar. 31, 2014 Stock Option [Member] Stock Options [Member] | Mar. 31, 2014 Underwriting Offering [Member] Warrant [Member] | Mar. 07, 2014 Underwriting Offering [Member] Warrant [Member] | Mar. 07, 2014 Stock Options [Member]
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |  |
Common Stock, Shares, Issued | 27,196,537 | 16,375,365 | 1,600,000 |  |  | 800,000 |  |  |  |
Proceeds from issuance of common stock | $ 58,736,166 | $ 16,428,827 | $ 11,100,000 | $ 5,600,000 |  |  |  |  |  |
Class of Warrant or Right, Additional Number of Securities Called by Warrants or Rights |  |  |  |  |  |  |  |  | 250,000 |
Exercise Price of Warrant Exercise |  |  |  |  |  |  |  |  | 5.10 |
Net proceeds from exercise of warrants | 3,028,241 | 6,604,418 |  |  |  |  |  | 1,300,000 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number | 4,780,658 |  |  |  |  |  |  |  |  | 4,800
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price |  |  |  |  |  |  |  |  |  | $ 6.20
Net proceeds from exercise of options | 150,658 | 0 |  |  |  |  | 0 |  |  |
Committment Value Under Purchase Agreement |  |  |  |  | $ 30,000,000 |  |  |  |  |
Term Of Agreement In Months |  |  |  |  | 0 |  |  |  |  |

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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 30 -Article 5 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph i -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a -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. + Details
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