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Shareholders' Equity Equity Issuances (Details) (USD $) In Millions, except Share data, unless otherwise specified |  |  | 0 Months Ended |  |  | 3 Months Ended |
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Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2012 Private Placement [Member] | Mar. 31, 2014 Aspire Capital Purchase Agreement [Member] | Sep. 28, 2011 Aspire Capital Purchase Agreement [Member] | Mar. 31, 2014 Aegis Capital Purchase Agreement [Member] | Mar. 31, 2014 Aspire Capital Purchase Agreement [Member]
Class of Stock [Line Items] |  |  |  |  |  |  |
Committment Value Under Purchase Agreement |  |  |  |  | $ 20.0 |  |
Term Of Agreement In Months |  |  |  |  | 24 |  |
Discount Applied To Weighted Average Price |  |  |  | 5.00% |  |  |
Investment Warrants, Exercise Price |  |  | $ 5.10 |  |  |  |
Shares, Issued |  |  |  |  |  | 800,000 |
Proceeds from Issuance of Common Stock Gross |  |  |  |  |  | 5.6 |
Common Stock, Shares, Issued | 28,593,410 | 27,196,537 |  |  |  |  | 150,000
Purchase Commitment, Remaining Minimum Amount Committed |  |  |  |  |  |  | $ 30.0

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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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