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Common Stock Warrant (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified |  |  |  | 6 Months Ended
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Jun. 30, 2012 | Feb. 08, 2012 | Jun. 30, 2012 Stock Warrant [Member] | Jun. 30, 2012 Common Stock
Common Stock Warrant (Textual) [Abstract] |  |  |  |
Purchase treasury warrant shares |  |  | 67,314 |
Exercise price of common stock | 1.50 | 1.00 |  | 16.10
Cash on exercised of common stock |  |  |  | $ 1,100

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- Definition Expected cash proceeds from exercising warrants option. + References No definition available. + Details
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- Definition The exercise price of each class 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=6881521&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 The specified number of securities that each class of warrants or rights outstanding give the holder the right but not the obligation to purchase from the issuer at a specific price, on or before a certain date. + 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=6881521&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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