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Warrants Outstanding and Exercisable (Details) (USD $) | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | --- | ---
Warrant, exercise price | $ 3.07 | $ 7.28 | $ 14.96
Warrants, Outstanding as of end of period | 8,091,000 | 5,131,000 | 2,287,000
Warrants, Exercisable at end of period | 8,091,000 |  |
Warrants exercisable, weighted average exercise price | $ 3.07 |  |
2.13 |  |  |
Warrant, exercise price | $ 2.13 |  |
Warrants, Outstanding as of end of period | 1,000,000 |  |
Warrants outstanding, weighted average remaining contractual life, years | 1.39 |  |
Warrants outstanding, weighted average exercise price | $ 2.13 |  |
Warrants, Exercisable at end of period | 1,000,000 |  |
Warrants exercisable, weighted average exercise price | $ 2.13 |  |
2.29 |  |  |
Warrant, exercise price | $ 2.29 |  |
Warrants, Outstanding as of end of period | 2,100,000 |  |
Warrants outstanding, weighted average remaining contractual life, years | 3.47 |  |
Warrants outstanding, weighted average exercise price | $ 2.29 |  |
Warrants, Exercisable at end of period | 0 |  |
Warrants exercisable, weighted average exercise price | $ 0 |  |
2.44 |  |  |
Warrant, exercise price | $ 2.44 |  |
Warrants, Outstanding as of end of period | 1,855,000 |  |
Warrants outstanding, weighted average remaining contractual life, years | 4.72 |  |
Warrants outstanding, weighted average exercise price | $ 2.44 |  |
Warrants, Exercisable at end of period | 1,855,000 |  |
Warrants exercisable, weighted average exercise price | $ 2.44 |  |
2.89 |  |  |
Warrant, exercise price | $ 2.89 |  |
Warrants, Outstanding as of end of period | 1,858,000 |  |
Warrants outstanding, weighted average remaining contractual life, years | 4.38 |  |
Warrants outstanding, weighted average exercise price | $ 2.89 |  |
Warrants, Exercisable at end of period | 1,858,000 |  |
Warrants exercisable, weighted average exercise price | $ 2.89 |  |
6.24 |  |  |
Warrant, exercise price | $ 6.24 |  |
Warrants, Outstanding as of end of period | 1,278,000 |  |
Warrants outstanding, weighted average remaining contractual life, years | 2.88 |  |
Warrants outstanding, weighted average exercise price | $ 6.24 |  |
Warrants, Exercisable at end of period | 1,278,000 |  |
Warrants exercisable, weighted average exercise price | $ 6.24 |  |

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- Definition Warrants, Exercisable at end of period + References No definition available. + Details
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- Definition No authoritative reference available. + References No definition available. + Details
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Balance Type: | na
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- Definition No authoritative reference available. + References No definition available. + Details
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- Definition Warrants, Weighted-Average Exercise Price, Exercisable + References No definition available. + Details
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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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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + 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)(2)) -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 2 -Article 4 + Details
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