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Earnings Per Common Share (Tables)
9 Months Ended
Sep. 30, 2017
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, relating to outstanding stock options and restricted stock units:
 
2017
 
2016
Three months ended
690,096

 
513,342

Nine months ended
682,205

 
508,512