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Stock-Based Compensation (Details 1) (Stock Options [Member], USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Summary of all stock option plans / warrant activity |  |  |
Weighted Average Number of Shares/Warrants, Outstanding, Beginning Balance | 1,715,200 | 19,324 | 19,804
Weighted Average Number of Shares, Granted | 145,000 | 1,704,000 |
Weighted Average Number of Shares, Cancelled or expired | (18,256) | (8,124) | (480)
Weighted Average Number of Shares, Exercised | (241,361) |  |
Weighted Average Number of Shares/Warrants, Outstanding, Ending Balance | 1,600,583 | 1,715,200 | 19,324
Weighted Average Exercise Price, Outstanding, Beginning Balance | $ 5.04 | $ 92.19 | $ 101.36
Weighted Average Exercise Price, Granted | $ 6.06 | $ 4.35 |
Weighted Average Exercise Price, Expired | $ 5.57 | $ 69.36 | $ 523.23
Weighted Average Exercise Price, Exercised | $ 4.39 |  |
Weighted Average Exercise Price, Outstanding, Ending Balance | $ 5.22 | $ 5.04 | $ 92.19
Minimum [Member] |  |  |
Summary of all stock option plans / warrant activity |  |  |
Exercise price per share, Outstanding, Beginning Balance | $ 4.02 | $ 35.39 | $ 35.39
Stock Option Plans, Exercise Price Per Share Granted | $ 5.54 | $ 4.02 |
Stock Option Plans, Exercise Price Per Share Cancelled or expired | $ 4.25 | $ 35.39 | $ 135.00
Stock Option Plans, Exercise Price Per Share Exercised | $ 4.25 |  |
Exercise price per share, Outstanding, Ending Balance | $ 4.02 | $ 4.02 | $ 35.39
Maximum [Member] |  |  |
Summary of all stock option plans / warrant activity |  |  |
Exercise price per share, Outstanding, Beginning Balance | $ 125.00 | $ 368.75 | $ 687.50
Stock Option Plans, Exercise Price Per Share Granted | $ 7.70 | $ 6.28 |
Stock Option Plans, Exercise Price Per Share Cancelled or expired | $ 125.00 | $ 368.75 | $ 687.50
Stock Option Plans, Exercise Price Per Share Exercised | $ 6.28 |  |
Exercise price per share, Outstanding, Ending Balance | $ 122.50 | $ 125.00 | $ 368.75

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- Definition Exercise price at which grantees can acquire the shares reserved for issuance under the stock option plan. + 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 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 + 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 Gross number of share options (or share units) granted during the period. + References No definition available. + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: 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 2: 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 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + 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)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of share options (or share units) exercised during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28,29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: 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)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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