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Common Stock (Details) | Dec. 31, 2013 | Dec. 23, 2009
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Common Stock [Abstract] |  |
Remaining number of shares authorized to be repurchased | 411,910 |
Number of rights distributed for each share of common stock |  | 1
Number of securities into which each right may be converted |  | 0.01
Exercise price of right |  | 41
Percentage of common stock required to be purchased for rights to become exercisable |  | 16.50%

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- Definition Exercise price per share or per unit 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=26873400&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 remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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