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Earnings Per Share of Common Stock (Schedule of Average Number of Antidilutive Stock Options) (Details) (Stock Options [Member])
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Stock Options [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Average number of stock options 7,000 0 4,000 3,461,000