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Net Income Per Common Share (Details) - shares
1 Months Ended 3 Months Ended
Feb. 28, 2017
Mar. 31, 2017
Mar. 31, 2016
Net Income Per Common Share [Line Items]      
Weighted average number of diluted shares outstanding adjustment (in shares)   472,705 427,045
Stock Options [Member]      
Net Income Per Common Share [Line Items]      
Antidilutive securities excluded from computation of EPS   177,781 462,243
Options, granted (in shares) 125,300    
Restricted Stock Units (RSUs) [Member]      
Net Income Per Common Share [Line Items]      
Other than options, granted (in shares) 85,307    
Performance Share Awards [Member]      
Net Income Per Common Share [Line Items]      
Other than options, granted (in shares) 83,970    
Performance period   3 years  
Minimum range of target award of stock plan   0.00%  
Maximum range of target award of stock plan   250.00%