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Shareholders' Equity Outstanding Warrants by Exercise Price Range (Details) (USD $) | Dec. 31, 2011
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Warrants Outstanding by Exercise Price Range [Line Items] |
Warrants and Rights Outstanding | 37,389,825
Warrants Outstanding, Weighted Average Remaining Contractual Term | 3.9
Warrants Outstanding, Weighted Average Exercise Price | $ 2.35
Warrants and Rights Exercisable | 35,931,825
Warrants Exercisable, Weighted Average Remaining Contractual Term | 3.8
Warrants Exercisable, Weighted Average Exercise Price | $ 2.24
$0.56 - $1.45 [Member] |
Warrants Outstanding by Exercise Price Range [Line Items] |
Warrants and Rights Outstanding | 11,263,500
Warrants Outstanding, Weighted Average Remaining Contractual Term | 4.5
Warrants Outstanding, Weighted Average Exercise Price | $ 1.42
Warrants and Rights Exercisable | 10,805,500
Warrants Exercisable, Weighted Average Remaining Contractual Term | 4.5
Warrants Exercisable, Weighted Average Exercise Price | $ 1.44
$1.46 - $2.10 [Member] |
Warrants Outstanding by Exercise Price Range [Line Items] |
Warrants and Rights Outstanding | 7,933,635
Warrants Outstanding, Weighted Average Remaining Contractual Term | 4
Warrants Outstanding, Weighted Average Exercise Price | $ 1.75
Warrants and Rights Exercisable | 7,933,635
Warrants Exercisable, Weighted Average Remaining Contractual Term | 4
Warrants Exercisable, Weighted Average Exercise Price | $ 1.75
$2.11 - $2.53 [Member] |
Warrants Outstanding by Exercise Price Range [Line Items] |
Warrants and Rights Outstanding | 13,032,512
Warrants Outstanding, Weighted Average Remaining Contractual Term | 3.3
Warrants Outstanding, Weighted Average Exercise Price | $ 2.50
Warrants and Rights Exercisable | 13,032,512
Warrants Exercisable, Weighted Average Remaining Contractual Term | 3.3
Warrants Exercisable, Weighted Average Exercise Price | $ 2.50
$2.54 - $5.99 [Member] |
Warrants Outstanding by Exercise Price Range [Line Items] |
Warrants and Rights Outstanding | 2,929,928
Warrants Outstanding, Weighted Average Remaining Contractual Term | 4.5
Warrants Outstanding, Weighted Average Exercise Price | $ 3.73
Warrants and Rights Exercisable | 2,929,928
Warrants Exercisable, Weighted Average Remaining Contractual Term | 4.5
Warrants Exercisable, Weighted Average Exercise Price | $ 3.73
$6.00 - $7.00 [Member] |
Warrants Outstanding by Exercise Price Range [Line Items] |
Warrants and Rights Outstanding | 2,230,250
Warrants Outstanding, Weighted Average Remaining Contractual Term | 3.4
Warrants Outstanding, Weighted Average Exercise Price | $ 6.51
Warrants and Rights Exercisable | 1,230,250
Warrants Exercisable, Weighted Average Remaining Contractual Term | 1.2
Warrants Exercisable, Weighted Average Exercise Price | $ 6.11

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- Definition Aggregate amount of each class of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 4 -Section 08 -Paragraph i Reference 3: 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)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 + Details
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