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Warrants (Summary of Warrant Activity) (Details) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012
Warrants Summary Of Warrant Activity Details |  |
Warrants, Outstanding as of beginning of period | 5,131,000 | 2,287,000
Granted with exercise price less than intrinsic value | 2,216,000 |
Granted with exercise price greater than intrinsic value | 1,855,000 | 3,100,000
Exercised | (358,000) | 0
Canceled/expired | (753,000) | (256,000)
Warrants, Outstanding as of end of period | 8,091,000 | 5,131,000
Warrants, Weighted-Average Exercise Prices, Outstanding as of beginnig of period | $ 7.28 | $ 14.96
Warrants, Weighted-Average Exercise Prices, Granted less than intrinsic value | $ 2.71 |
Warrants, Weighted-Average Exercise Prices, Granted greater than intrinsic value | $ 2.44 | $ 2.48
Warrants, Weighted-Average Exercise Prices, Exercised | 1.77 | 0
Warrants, Weighted-Average Exercise Prices, cancelled or expired | $ 28.80 | $ 17.60
Warrants, Weighted-Average Exercise Prices, Outstanding as of end of period | $ 3.07 | $ 7.28
Warrants, Exercisable at end of period | 8,091,000 |
Warrants, Weighted-Average Exercise Price, Exercisable | $ 3.07 |

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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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