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General - Earnings Per Share (Details) (Restricted Stock and Stock Options [Member])
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Restricted Stock and Stock Options [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive restricted common stock units excluded from computation of earnings per share 452 36 1,597 1,702