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Stock-Based Compensation (Details 1) (Stock Options [Member], USD $) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Summary of all stock option plans / warrant activity |  |  |
Weighted Average Number of Shares/Warrants, Outstanding, Beginning Balance | 19,324 | 19,804 | 19,884
Weighted Average Number of Shares, Granted | 1,704,000 |  |
Weighted Average Number of Shares, Cancelled or expired | (8,124) | (480) | (80)
Weighted Average Number of Shares, Exercised |  |  |
Weighted Average Number of Shares/Warrants, Outstanding, Ending Balance | 1,715,200 | 19,324 | 19,804
Weighted Average Exercise Price, Outstanding, Beginning Balance | $ 92.19 | $ 101.36 | $ 103.63
Weighted Average Exercise Price, Granted | $ 4.35 |  |
Weighted Average Exercise Price, Expired | $ 69.36 | $ 523.23 | $ 348.75
Weighted Average Exercise Price, Exercised |  |  |
Weighted Average Exercise Price, Outstanding, Ending Balance | $ 5.04 | $ 92.19 | $ 101.36
Minimum [Member] |  |  |
Summary of all stock option plans / warrant activity |  |  |
Exercise price per share, Outstanding, Beginning Balance | $ 35.39 | $ 35.39 | $ 35.39
Stock Option Plans, Exercise Price Per Share Granted | $ 4.02 |  |
Stock Option Plans, Exercise Price Per Share Cancelled or expired | $ 35.39 | $ 135.00 |
Stock Option Plans, Exercise Price Per Share Exercised |  |  |
Exercise price per share, Outstanding, Ending Balance | $ 4.02 | $ 35.39 | $ 35.39
Maximum [Member] |  |  |
Summary of all stock option plans / warrant activity |  |  |
Exercise price per share, Outstanding, Beginning Balance | $ 368.75 | $ 687.50 | $ 687.50
Stock Option Plans, Exercise Price Per Share Granted | $ 6.28 |  |
Stock Option Plans, Exercise Price Per Share Cancelled or expired | $ 368.75 | $ 687.50 | $ 348.75
Stock Option Plans, Exercise Price Per Share Exercised |  |  |
Exercise price per share, Outstanding, Ending Balance | $ 125.00 | $ 368.75 | $ 687.50

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- Definition Share based compensation shares authorized under stock option plans exercise price range outstanding options weighted average exercise price exercised. + References No definition available. + Details
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- Definition Share based compensation shares authorized under stock option plans exercise price range outstanding options weighted average exercise price granted. + References No definition available. + Details
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(g) -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. + Details
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- Definition Weighted average price of options that were either forfeited or expired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(b) -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 FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(a) -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. + Details
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