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Net Income Per Share Net Income Per Share (Schedule of Securities Excluded from Net Income Per Share) (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Options excluded from diluted net income per share 2,000 116,000 2,000 116,000
Warrants excluded from diluted net income per share 250,000 250,000 250,000 250,000
Exercise price of excluded warrants $ 187.50 $ 187.50 $ 187.50 $ 187.50
Minimum [Member]
        
Exercise price of excluded options $ 177.50 $ 93.00 $ 177.50 $ 93.00
Maximum [Member]
        
Exercise price of excluded options $ 357.00 $ 357.00 $ 357.00 $ 357.00