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Earnings Per Common Share (Tables)
9 Months Ended
Sep. 30, 2012
Earnings Per Share [Abstract]  
Diluted weighted average number of common shares outstanding
In accordance with the treasury stock method, the Company has included the following common equivalent shares in the calculation of diluted weighted average number of common shares outstanding for the three and nine month periods ended September 30, solely relating to outstanding stock options and restricted stock units:
 
2012
 
2011
Three months ended
753,019

 
904,212

Nine months ended
793,099

 
973,762