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Basis of Presentation (Details 2)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Income (Loss) Per Common Share        
Common equivalent shares excluded from computation that would have otherwise been dilutive 0.6 0.6 0.7 0.6
Revenue Recognition        
Revenue retention percentage     10.00%  
Stock options and Restricted stock
       
Income (Loss) Per Common Share        
Antidilutive securities excluded from the computation of earnings per share (in shares) 1.8 1.0 1.5 1.1