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Net Income Per Share Net Income Per Share (Schedule of Securities Excluded from Net Income Per Share) (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Options excluded from diluted net income per share | 1,000 | 111,000 | 125,000
Warrants excluded from diluted net income per share | 250,000 | 250,000 | 250,000
Exercise price of excluded warrants | $ 187.50 | $ 187.50 | $ 187.50
Minimum [Member] |  |  |
Exercise price of excluded options | $ 177.50 | $ 93.00 | $ 93.00
Maximum [Member] |  |  |
Exercise price of excluded options | $ 357.00 | $ 357.00 | $ 357.00

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- Definition Exercise price of the option. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Footnote 5 + Details
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- Definition Exercise price of the warrants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column A + Details
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- Definition Options with exercise price greater than market price + References No definition available. + Details
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- Definition Warrants with exercise price greater than market price + References No definition available. + Details
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