Net Income Per Common Share (Details) - shares	1 Months Ended	3 Months Ended		6 Months Ended
	Feb. 28, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net Income Per Common Share [Line Items]
Weighted average number of diluted shares outstanding adjustment (in shares)		544,960	473,509	507,987	455,244
Antidilutive securities excluded from computation of EPS (in shares)		0	367,255	88,891	414,749
Stock Options [Member]
Net Income Per Common Share [Line Items]
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%