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Net Income Per Common Share (Details) - shares
1 Months Ended 3 Months Ended 9 Months Ended
Feb. 28, 2019
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Net Income Per Common Share [Line Items]          
Weighted average number of diluted shares outstanding adjustment (in shares)   304,324 510,912 441,773 536,338
Stock Options [Member]          
Net Income Per Common Share [Line Items]          
Antidilutive securities excluded from computation of EPS   257,979 108,516 295,043 133,910
Options, granted (in shares) 120,585        
Restricted Stock Units (RSUs) [Member]          
Net Income Per Common Share [Line Items]          
Other than options, granted (in shares) 93,992        
Performance Share Awards [Member]          
Net Income Per Common Share [Line Items]          
Other than options, granted (in shares) 88,402        
Performance period       3 years  
Minimum range of target award of stock plan       0.00%  
Maximum range of target award of stock plan       250.00%