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Warrants (Summary Of Shares Indexed To The Warrants) (Details)
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Jun. 30, 2014
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Dec. 31, 2013
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|---|---|---|
| Class of Warrant or Right [Line Items] | ||
| Number of shares indexed | 13,984,204 | 24,968,868 |
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June 5, 2009 Financing [Member] | Series III Warrants [Member]
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| Class of Warrant or Right [Line Items] | ||
| Number of shares indexed | 1,555,555 | |
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June 5, 2009 Financing [Member] | Warrants To Placement Agent [Member]
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| Class of Warrant or Right [Line Items] | ||
| Number of shares indexed | 132,143 | |
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October 23, 2009 Financing [Member] | Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||
| Number of shares indexed | 778,333 | 1,228,333 |
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June 30, 2010 Financing [Member] | Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||
| Number of shares indexed | 2,000,000 | |
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March 31, 2011 Financing [Member] | Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||
| Number of shares indexed | 3,333,333 | 3,333,333 |
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December 4, 2012 Financing [Member] | Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||
| Number of shares indexed | 221,600 | 7,418,503 |
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December 4, 2012 Financing [Member] | Warrants To Placement Agent [Member]
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| Class of Warrant or Right [Line Items] | ||
| Number of shares indexed | 40,000 | 880,000 |
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July 26, 2013 Financing [Member] | Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||
| Number of shares indexed | 2,000,000 | 3,990,000 |
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July 26, 2013 Financing [Member] | Warrants To Placement Agent [Member]
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| Class of Warrant or Right [Line Items] | ||
| Number of shares indexed | 124,032 | 456,000 |
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October 16, 2013 Financing [Member] | Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||
| Number of shares indexed | 2,317,309 | 3,567,309 |
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October 16, 2013 Financing [Member] | Warrants To Placement Agent [Member]
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| Class of Warrant or Right [Line Items] | ||
| Number of shares indexed | 407,692 | 407,692 |
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January 21, 2014 Financing [Member] | Warrants To Institutional Investors [Member]
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| Class of Warrant or Right [Line Items] | ||
| Number of shares indexed | 4,761,905 |