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Earnings (Loss) Per Share (Additional Disclosures) (Details) | Dec. 31, 2012 | Feb. 11, 2008
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Earnings Per Share [Abstract] |  |
Common stock included in share lending agreement | 3,800,000 | 3,800,000

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- Definition The number of shares issued in connection with an own-share lending arrangement entered into by the entity, in contemplation of a convertible debt offering or other financing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 2A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=7656903&loc=SL6757479-112611 + Details
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